diff --git a/epp-client/examples/client.rs b/epp-client/examples/client.rs
index 48051d2..5ea335d 100644
--- a/epp-client/examples/client.rs
+++ b/epp-client/examples/client.rs
@@ -5,7 +5,8 @@ use epp_client::EppClient;
 use epp_client::epp::object::{StringValueTrait};
 use epp_client::{epp::request, epp::xml::EppXml};
 use epp_client::epp::object::data::{
-    PostalInfo, Address, Phone, DomainContact, ContactStatus, DomainStatus, HostObjList, HostAttrList, HostAttr, HostAddr
+    PostalInfo, Address, Phone, DomainContact, ContactStatus, DomainStatus, HostObjList, HostAttrList, HostAttr, HostAddr,
+    Host, HostStatus
 };
 use epp_client::epp::*;
 
@@ -193,6 +194,72 @@ async fn query_transfer(client: &mut EppClient) {
     println!("{}\n\n", transfer_query.serialize().unwrap());
 }
 
+async fn check_hosts(client: &mut EppClient) {
+    let hosts_check = EppHostCheck::new(vec!["host1.eppdev-1.com", "ns1.testing.com"], gen_client_tr_id("eppdev").unwrap().as_str());
+
+    client.transact::<_, EppHostCheckResponse>(&hosts_check).await.unwrap();
+}
+
+async fn create_host(client: &mut EppClient) {
+    let host = Host {
+        name: "host1.eppdev-1.com".to_string_value(),
+        addresses: Some(vec![
+            HostAddr::new("v4", "29.245.122.14"),
+            HostAddr::new("v6", "2400:6180:100:d0::8d6:4001"),
+        ])
+    };
+
+    let host_create = EppHostCreate::new(host, gen_client_tr_id("eppdev").unwrap().as_str());
+
+    // println!("{}", host_create.serialize().unwrap());
+
+    client.transact::<_, EppHostCreateResponse>(&host_create).await.unwrap();
+}
+
+async fn query_host(client: &mut EppClient) {
+    let host_info = EppHostInfo::new("host2.eppdev-1.com", gen_client_tr_id("eppdev").unwrap().as_str());
+
+    // println!("{}", host_info.serialize().unwrap());
+
+    client.transact::<_, EppHostInfoResponse>(&host_info).await.unwrap();
+}
+
+async fn update_host(client: &mut EppClient) {
+    let addr = vec![
+        HostAddr::new("v6", "2400:6180:100:d0::8d6:4001"),
+    ];
+
+    let add = HostAddRemove {
+        addresses: Some(addr),
+        statuses: None,
+    };
+
+    let remove = HostAddRemove {
+        addresses: None,
+        statuses: Some(vec![
+            HostStatus {
+                status: "clientDeleteProhibited".to_string()
+            }
+        ]),
+    };
+
+    let mut host_update = EppHostUpdate::new("host1.eppdev-1.com", gen_client_tr_id("eppdev").unwrap().as_str());
+
+    host_update.add(add);
+    // host_update.remove(remove);
+    host_update.info(HostChangeInfo { name: "host2.eppdev-1.com".to_string_value() });
+
+    // println!("{}", host_update.serialize().unwrap());
+
+    client.transact::<_, EppHostUpdateResponse>(&host_update).await.unwrap();
+}
+
+async fn delete_host(client: &mut EppClient) {
+    let host_delete = EppHostDelete::new("host2.eppdev-1.com", gen_client_tr_id("eppdev").unwrap().as_str());
+
+    client.transact::<_, EppHostDeleteResponse>(&host_delete).await.unwrap();
+}
+
 async fn hello(client: &mut EppClient) {
     let greeting = client.hello().await.unwrap();
 
@@ -227,7 +294,7 @@ async fn main() {
 
     // create_domain(&mut client).await;
 
-    // query_domain(&mut client).await;
+    query_domain(&mut client).await;
 
     // update_domain(&mut client).await;
 
@@ -244,4 +311,14 @@ async fn main() {
     // reject_transfer(&mut client).await;
 
     // cancel_transfer(&mut client).await;
+
+    // check_hosts(&mut client).await;
+
+    // create_host(&mut client).await;
+
+    // query_host(&mut client).await;
+
+    // update_host(&mut client).await;
+
+    // delete_host(&mut client).await;
 }
diff --git a/epp-client/src/config.rs b/epp-client/src/config.rs
index 2edccd7..b5b10b4 100644
--- a/epp-client/src/config.rs
+++ b/epp-client/src/config.rs
@@ -17,6 +17,7 @@ pub struct EppClientConnection {
     port: u16,
     username: String,
     password: String,
+    ext_uris: Option<Vec<String>>,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -38,6 +39,9 @@ impl EppClientConnection {
     pub fn credentials(&self) -> (String, String) {
         (self.username.to_string(), self.password.to_string())
     }
+    pub fn ext_uris(&self) -> Option<&Vec<String>> {
+        self.ext_uris.as_ref()
+    }
 }
 
 impl EppClientConfig {
diff --git a/epp-client/src/connection/client.rs b/epp-client/src/connection/client.rs
index 786fe17..7f33792 100644
--- a/epp-client/src/connection/client.rs
+++ b/epp-client/src/connection/client.rs
@@ -22,13 +22,24 @@ async fn connect(registry: &'static str) -> Result<EppClient, Box<dyn Error>> {
     tokio::spawn(async move {
         let stream = epp_connect(&registry_creds).await.unwrap();
         let credentials = registry_creds.credentials();
+        let ext_uris = registry_creds.ext_uris();
+
+        let ext_uris = match ext_uris {
+            Some(uris) => Some(
+                uris
+                    .iter()
+                    .map(|u| u.to_string())
+                    .collect::<Vec<String>>()
+            ),
+            None => None,
+        };
 
         let connection = EppConnection::new(
             registry.to_string(),
             stream
         ).await.unwrap();
 
-        let client = EppClient::build(connection, credentials).await.unwrap();
+        let client = EppClient::build(connection, credentials, ext_uris).await.unwrap();
 
         tx.send(client).unwrap();
     });
@@ -40,6 +51,7 @@ async fn connect(registry: &'static str) -> Result<EppClient, Box<dyn Error>> {
 
 pub struct EppClient {
     credentials: (String, String),
+    ext_uris: Option<Vec<String>>,
     connection: EppConnection,
     // pub client_tr_id_fn: Arc<dyn Fn(&EppClient) -> String + Send + Sync>,
 }
@@ -66,15 +78,16 @@ impl EppClient {
         connect(registry).await
     }
 
-    async fn build(connection: EppConnection, credentials: (String, String)) -> Result<EppClient, Box<dyn Error>> {
+    async fn build(connection: EppConnection, credentials: (String, String), ext_uris: Option<Vec<String>>) -> Result<EppClient, Box<dyn Error>> {
         let mut client = EppClient {
             connection: connection,
             credentials: credentials,
+            ext_uris: ext_uris,
             // client_tr_id_fn: Arc::new(default_client_tr_id_fn),
         };
 
         let client_tr_id = generate_client_tr_id(&client.credentials.0)?;
-        let login_request = EppLogin::new(&client.credentials.0, &client.credentials.1, client_tr_id.as_str());
+        let login_request = EppLogin::new(&client.credentials.0, &client.credentials.1, &client.ext_uris, client_tr_id.as_str());
 
         client.transact::<_, EppCommandResponse>(&login_request).await?;
 
diff --git a/epp-client/src/epp.rs b/epp-client/src/epp.rs
index ffb7cfb..9fe39b5 100644
--- a/epp-client/src/epp.rs
+++ b/epp-client/src/epp.rs
@@ -17,6 +17,12 @@ pub use request::domain::info::*;
 pub use request::domain::renew::*;
 pub use request::domain::transfer::*;
 pub use request::domain::update::*;
+pub use request::host::check::*;
+pub use request::host::create::*;
+pub use request::host::delete::*;
+pub use request::host::info::*;
+pub use request::host::update::*;
+pub use request::message::poll::*;
 
 pub use response::contact::check::*;
 pub use response::contact::create::*;
@@ -30,3 +36,9 @@ pub use response::domain::info::*;
 pub use response::domain::renew::*;
 pub use response::domain::transfer::*;
 pub use response::domain::update::*;
+pub use response::host::check::*;
+pub use response::host::create::*;
+pub use response::host::delete::*;
+pub use response::host::info::*;
+pub use response::host::update::*;
+pub use response::message::poll::*;
diff --git a/epp-client/src/epp/object/data.rs b/epp-client/src/epp/object/data.rs
index 2ff97aa..f479bca 100644
--- a/epp-client/src/epp/object/data.rs
+++ b/epp-client/src/epp/object/data.rs
@@ -1,6 +1,9 @@
 use crate::epp::object::{StringValue, StringValueTrait};
 use serde::{Deserialize, Serialize};
 
+pub type DomainStatus = ContactStatus;
+pub type HostStatus = ContactStatus;
+
 #[derive(Serialize, Deserialize, Debug)]
 pub enum DomainNsList {
     HostAttrList(HostAttrList),
@@ -38,6 +41,13 @@ impl HostAddr {
     }
 }
 
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Host {
+    pub name: StringValue,
+    #[serde(rename = "addr")]
+    pub addresses: Option<Vec<HostAddr>>,
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct HostAttr {
     #[serde(rename = "hostName")]
@@ -86,12 +96,6 @@ impl Period {
     }
 }
 
-#[derive(Serialize, Deserialize, Debug)]
-pub struct DomainStatus {
-    #[serde(rename = "s")]
-    pub status: String,
-}
-
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ContactStatus {
     #[serde(rename = "s")]
diff --git a/epp-client/src/epp/request.rs b/epp-client/src/epp/request.rs
index a12f2f8..36f15c6 100644
--- a/epp-client/src/epp/request.rs
+++ b/epp-client/src/epp/request.rs
@@ -1,5 +1,7 @@
 pub mod contact;
 pub mod domain;
+pub mod host;
+pub mod message;
 
 use serde::{Deserialize, Serialize};
 use std::error::Error;
@@ -9,7 +11,7 @@ use crate::epp::command::Command;
 use crate::epp::object::{
     ElementName, EppObject, Options, ServiceExtension, Services, StringValue, StringValueTrait,
 };
-use crate::epp::xml::{EPP_LANG, EPP_VERSION};
+use crate::epp::xml::{EPP_CONTACT_XMLNS, EPP_DOMAIN_XMLNS, EPP_HOST_XMLNS, EPP_LANG, EPP_VERSION};
 use epp_client_macros::*;
 
 pub type EppHello = EppObject<Hello>;
@@ -44,7 +46,21 @@ pub struct Login {
 }
 
 impl EppLogin {
-    pub fn new(username: &str, password: &str, client_tr_id: &str) -> EppLogin {
+    pub fn new(
+        username: &str,
+        password: &str,
+        ext_uris: &Option<Vec<String>>,
+        client_tr_id: &str,
+    ) -> EppLogin {
+        let ext_uris = match ext_uris {
+            Some(uris) => Some(
+                uris.iter()
+                    .map(|u| u.to_string_value())
+                    .collect::<Vec<StringValue>>(),
+            ),
+            None => None,
+        };
+
         let login = Login {
             username: username.to_string_value(),
             password: password.to_string_value(),
@@ -54,15 +70,11 @@ impl EppLogin {
             },
             services: Services {
                 obj_uris: vec![
-                    "urn:ietf:params:xml:ns:host-1.0".to_string_value(),
-                    "urn:ietf:params:xml:ns:contact-1.0".to_string_value(),
-                    "urn:ietf:params:xml:ns:domain-1.0".to_string_value(),
+                    EPP_HOST_XMLNS.to_string_value(),
+                    EPP_CONTACT_XMLNS.to_string_value(),
+                    EPP_DOMAIN_XMLNS.to_string_value(),
                 ],
-                svc_ext: Some(ServiceExtension {
-                    ext_uris: Some(vec![
-                        "http://schema.ispapi.net/epp/xml/keyvalue-1.0".to_string_value()
-                    ]),
-                }),
+                svc_ext: Some(ServiceExtension { ext_uris: ext_uris }),
             },
         };
 
diff --git a/epp-client/src/epp/request/contact/check.rs b/epp-client/src/epp/request/contact/check.rs
index f7dd0d8..60ab26c 100644
--- a/epp-client/src/epp/request/contact/check.rs
+++ b/epp-client/src/epp/request/contact/check.rs
@@ -9,7 +9,7 @@ pub type EppContactCheck = EppObject<Command<ContactCheck>>;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ContactList {
-    pub xmlns: String,
+    xmlns: String,
     #[serde(rename = "id")]
     pub contact_ids: Vec<StringValue>,
 }
diff --git a/epp-client/src/epp/request/contact/delete.rs b/epp-client/src/epp/request/contact/delete.rs
index fd8f1eb..fbb810e 100644
--- a/epp-client/src/epp/request/contact/delete.rs
+++ b/epp-client/src/epp/request/contact/delete.rs
@@ -9,8 +9,8 @@ pub type EppContactDelete = EppObject<Command<ContactDelete>>;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ContactDeleteData {
-    pub xmlns: String,
-    pub id: StringValue,
+    xmlns: String,
+    id: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug, ElementName)]
diff --git a/epp-client/src/epp/request/contact/info.rs b/epp-client/src/epp/request/contact/info.rs
index 7062778..059e970 100644
--- a/epp-client/src/epp/request/contact/info.rs
+++ b/epp-client/src/epp/request/contact/info.rs
@@ -9,7 +9,7 @@ use serde::{Deserialize, Serialize};
 pub type EppContactInfo = EppObject<Command<ContactInfo>>;
 
 #[derive(Serialize, Deserialize, Debug)]
-pub struct ContactQuery {
+pub struct ContactInfoData {
     xmlns: String,
     id: StringValue,
     #[serde(rename = "authInfo")]
@@ -20,14 +20,14 @@ pub struct ContactQuery {
 #[element_name(name = "info")]
 pub struct ContactInfo {
     #[serde(rename = "info")]
-    query: ContactQuery,
+    info: ContactInfoData,
 }
 
 impl EppContactInfo {
     pub fn new(id: &str, auth_password: &str, client_tr_id: &str) -> EppContactInfo {
         EppObject::build(Command::<ContactInfo> {
             command: ContactInfo {
-                query: ContactQuery {
+                info: ContactInfoData {
                     xmlns: EPP_CONTACT_XMLNS.to_string(),
                     id: id.to_string_value(),
                     auth_info: AuthInfo::new(auth_password),
diff --git a/epp-client/src/epp/request/domain/delete.rs b/epp-client/src/epp/request/domain/delete.rs
index 454180e..8ef108f 100644
--- a/epp-client/src/epp/request/domain/delete.rs
+++ b/epp-client/src/epp/request/domain/delete.rs
@@ -9,8 +9,8 @@ pub type EppDomainDelete = EppObject<Command<DomainDelete>>;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct DomainDeleteData {
-    pub xmlns: String,
-    pub name: StringValue,
+    xmlns: String,
+    name: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug, ElementName)]
diff --git a/epp-client/src/epp/request/host.rs b/epp-client/src/epp/request/host.rs
new file mode 100644
index 0000000..035f812
--- /dev/null
+++ b/epp-client/src/epp/request/host.rs
@@ -0,0 +1,5 @@
+pub mod check;
+pub mod create;
+pub mod delete;
+pub mod info;
+pub mod update;
diff --git a/epp-client/src/epp/request/host/check.rs b/epp-client/src/epp/request/host/check.rs
new file mode 100644
index 0000000..0440da4
--- /dev/null
+++ b/epp-client/src/epp/request/host/check.rs
@@ -0,0 +1,43 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::{ElementName, EppObject, StringValue, StringValueTrait};
+use crate::epp::xml::EPP_HOST_XMLNS;
+use serde::{Deserialize, Serialize};
+
+pub type EppHostCheck = EppObject<Command<HostCheck>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostList {
+    xmlns: String,
+    #[serde(rename = "name")]
+    pub hosts: Vec<StringValue>,
+}
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "check")]
+pub struct HostCheck {
+    #[serde(rename = "check")]
+    list: HostList,
+}
+
+impl EppHostCheck {
+    pub fn new(hosts: Vec<&str>, client_tr_id: &str) -> EppHostCheck {
+        let hosts = hosts
+            .iter()
+            .filter_map(|d| Some(d.to_string_value()))
+            .collect::<Vec<StringValue>>();
+
+        let host_check = HostCheck {
+            list: HostList {
+                xmlns: EPP_HOST_XMLNS.to_string(),
+                hosts: hosts,
+            },
+        };
+
+        EppObject::build(Command::<HostCheck> {
+            command: host_check,
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+}
diff --git a/epp-client/src/epp/request/host/create.rs b/epp-client/src/epp/request/host/create.rs
new file mode 100644
index 0000000..5a8a301
--- /dev/null
+++ b/epp-client/src/epp/request/host/create.rs
@@ -0,0 +1,41 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::data::{Host, HostAddr};
+use crate::epp::object::{ElementName, EppObject, StringValue, StringValueTrait};
+use crate::epp::xml::EPP_HOST_XMLNS;
+use serde::{Deserialize, Serialize};
+
+pub type EppHostCreate = EppObject<Command<HostCreate>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCreateData {
+    xmlns: String,
+    pub name: StringValue,
+    #[serde(rename = "addr")]
+    pub addresses: Option<Vec<HostAddr>>,
+}
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "create")]
+pub struct HostCreate {
+    #[serde(rename = "create")]
+    host: HostCreateData,
+}
+
+impl EppHostCreate {
+    pub fn new(host: Host, client_tr_id: &str) -> EppHostCreate {
+        let host_create = HostCreate {
+            host: HostCreateData {
+                xmlns: EPP_HOST_XMLNS.to_string(),
+                name: host.name,
+                addresses: host.addresses,
+            },
+        };
+
+        EppObject::build(Command::<HostCreate> {
+            command: host_create,
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+}
diff --git a/epp-client/src/epp/request/host/delete.rs b/epp-client/src/epp/request/host/delete.rs
new file mode 100644
index 0000000..a6913f2
--- /dev/null
+++ b/epp-client/src/epp/request/host/delete.rs
@@ -0,0 +1,35 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::{ElementName, EppObject, StringValue, StringValueTrait};
+use crate::epp::xml::EPP_HOST_XMLNS;
+use serde::{Deserialize, Serialize};
+
+pub type EppHostDelete = EppObject<Command<HostDelete>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostDeleteData {
+    xmlns: String,
+    name: StringValue,
+}
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "delete")]
+pub struct HostDelete {
+    #[serde(rename = "delete")]
+    host: HostDeleteData,
+}
+
+impl EppHostDelete {
+    pub fn new(name: &str, client_tr_id: &str) -> EppHostDelete {
+        EppObject::build(Command::<HostDelete> {
+            command: HostDelete {
+                host: HostDeleteData {
+                    xmlns: EPP_HOST_XMLNS.to_string(),
+                    name: name.to_string_value(),
+                },
+            },
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+}
diff --git a/epp-client/src/epp/request/host/info.rs b/epp-client/src/epp/request/host/info.rs
new file mode 100644
index 0000000..dd820d7
--- /dev/null
+++ b/epp-client/src/epp/request/host/info.rs
@@ -0,0 +1,35 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::{ElementName, EppObject, StringValue, StringValueTrait};
+use crate::epp::xml::EPP_HOST_XMLNS;
+use serde::{Deserialize, Serialize};
+
+pub type EppHostInfo = EppObject<Command<HostInfo>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostInfoData {
+    xmlns: String,
+    name: StringValue,
+}
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "info")]
+pub struct HostInfo {
+    #[serde(rename = "info")]
+    info: HostInfoData,
+}
+
+impl EppHostInfo {
+    pub fn new(name: &str, client_tr_id: &str) -> EppHostInfo {
+        EppObject::build(Command::<HostInfo> {
+            command: HostInfo {
+                info: HostInfoData {
+                    xmlns: EPP_HOST_XMLNS.to_string(),
+                    name: name.to_string_value(),
+                },
+            },
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+}
diff --git a/epp-client/src/epp/request/host/update.rs b/epp-client/src/epp/request/host/update.rs
new file mode 100644
index 0000000..cde769b
--- /dev/null
+++ b/epp-client/src/epp/request/host/update.rs
@@ -0,0 +1,69 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::data::{HostAddr, HostStatus};
+use crate::epp::object::{ElementName, EppObject, StringValue, StringValueTrait};
+use crate::epp::xml::EPP_HOST_XMLNS;
+use serde::{Deserialize, Serialize};
+
+pub type EppHostUpdate = EppObject<Command<HostUpdate>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostChangeInfo {
+    pub name: StringValue,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostAddRemove {
+    #[serde(rename = "addr")]
+    pub addresses: Option<Vec<HostAddr>>,
+    #[serde(rename = "status")]
+    pub statuses: Option<Vec<HostStatus>>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostUpdateData {
+    xmlns: String,
+    name: StringValue,
+    add: Option<HostAddRemove>,
+    #[serde(rename = "rem")]
+    remove: Option<HostAddRemove>,
+    #[serde(rename = "chg")]
+    change_info: Option<HostChangeInfo>,
+}
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "update")]
+pub struct HostUpdate {
+    #[serde(rename = "update")]
+    host: HostUpdateData,
+}
+
+impl EppHostUpdate {
+    pub fn new(name: &str, client_tr_id: &str) -> EppHostUpdate {
+        EppObject::build(Command::<HostUpdate> {
+            command: HostUpdate {
+                host: HostUpdateData {
+                    xmlns: EPP_HOST_XMLNS.to_string(),
+                    name: name.to_string_value(),
+                    add: None,
+                    remove: None,
+                    change_info: None,
+                },
+            },
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+
+    pub fn info(&mut self, info: HostChangeInfo) {
+        self.data.command.host.change_info = Some(info);
+    }
+
+    pub fn add(&mut self, add: HostAddRemove) {
+        self.data.command.host.add = Some(add);
+    }
+
+    pub fn remove(&mut self, remove: HostAddRemove) {
+        self.data.command.host.remove = Some(remove);
+    }
+}
diff --git a/epp-client/src/epp/request/message.rs b/epp-client/src/epp/request/message.rs
new file mode 100644
index 0000000..5726c38
--- /dev/null
+++ b/epp-client/src/epp/request/message.rs
@@ -0,0 +1 @@
+pub mod poll;
diff --git a/epp-client/src/epp/request/message/poll.rs b/epp-client/src/epp/request/message/poll.rs
new file mode 100644
index 0000000..252c660
--- /dev/null
+++ b/epp-client/src/epp/request/message/poll.rs
@@ -0,0 +1,24 @@
+use epp_client_macros::*;
+
+use crate::epp::command::Command;
+use crate::epp::object::{ElementName, EppObject, StringValueTrait};
+use serde::{Deserialize, Serialize};
+
+pub type EppMessagePoll = EppObject<Command<MessagePoll>>;
+
+#[derive(Serialize, Deserialize, Debug, ElementName)]
+#[element_name(name = "poll")]
+pub struct MessagePoll {
+    op: String,
+}
+
+impl EppMessagePoll {
+    pub fn new(client_tr_id: &str) -> EppMessagePoll {
+        EppObject::build(Command::<MessagePoll> {
+            command: MessagePoll {
+                op: "req".to_string(),
+            },
+            client_tr_id: client_tr_id.to_string_value(),
+        })
+    }
+}
diff --git a/epp-client/src/epp/response.rs b/epp-client/src/epp/response.rs
index 147f3cd..4b2c820 100644
--- a/epp-client/src/epp/response.rs
+++ b/epp-client/src/epp/response.rs
@@ -1,5 +1,7 @@
 pub mod contact;
 pub mod domain;
+pub mod host;
+pub mod message;
 
 use epp_client_macros::*;
 use serde::{Deserialize, Deserializer, Serialize};
@@ -57,7 +59,7 @@ pub struct All;
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Access {
-    all: All,
+    pub all: All,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
@@ -68,8 +70,8 @@ pub struct Prov;
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Purpose {
-    admin: Admin,
-    prov: Prov,
+    pub admin: Admin,
+    pub prov: Prov,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
@@ -80,8 +82,8 @@ pub struct Public;
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Recipient {
-    ours: Ours,
-    public: Public,
+    pub ours: Ours,
+    pub public: Public,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
@@ -89,20 +91,20 @@ pub struct Stated;
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Retention {
-    stated: Stated,
+    pub stated: Stated,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Statement {
-    purpose: Purpose,
-    recipient: Recipient,
-    retention: Retention,
+    pub purpose: Purpose,
+    pub recipient: Recipient,
+    pub retention: Retention,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct Dcp {
-    access: Access,
-    statement: Statement,
+    pub access: Access,
+    pub statement: Statement,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq, ElementName)]
@@ -110,12 +112,12 @@ pub struct Dcp {
 #[element_name(name = "greeting")]
 pub struct Greeting {
     #[serde(rename = "svID")]
-    service_id: String,
+    pub service_id: String,
     #[serde(rename = "svDate")]
-    service_date: String,
+    pub service_date: String,
     #[serde(rename = "svcMenu")]
-    svc_menu: ServiceMenu,
-    dcp: Dcp,
+    pub svc_menu: ServiceMenu,
+    pub dcp: Dcp,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
@@ -130,8 +132,8 @@ pub struct ResultValue {
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub struct ExtValue {
-    value: ResultValue,
-    reason: StringValue,
+    pub value: ResultValue,
+    pub reason: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
diff --git a/epp-client/src/epp/response/domain/create.rs b/epp-client/src/epp/response/domain/create.rs
index 0aef271..b3a433c 100644
--- a/epp-client/src/epp/response/domain/create.rs
+++ b/epp-client/src/epp/response/domain/create.rs
@@ -9,11 +9,11 @@ pub type EppDomainCreateResponse = EppObject<CommandResponse<DomainCreateResult>
 pub struct DomainCreateData {
     #[serde(rename = "xmlns:domain")]
     xmlns: String,
-    name: StringValue,
+    pub name: StringValue,
     #[serde(rename = "crDate")]
-    created_at: StringValue,
+    pub created_at: StringValue,
     #[serde(rename = "exDate")]
-    expiry_date: StringValue,
+    pub expiry_date: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
diff --git a/epp-client/src/epp/response/domain/info.rs b/epp-client/src/epp/response/domain/info.rs
index d99f00c..b2aa44d 100644
--- a/epp-client/src/epp/response/domain/info.rs
+++ b/epp-client/src/epp/response/domain/info.rs
@@ -53,5 +53,5 @@ pub struct DomainInfoData {
 #[derive(Serialize, Deserialize, Debug)]
 pub struct DomainInfoResult {
     #[serde(rename = "infData")]
-    pub check_data: DomainInfoData,
+    pub info_data: DomainInfoData,
 }
diff --git a/epp-client/src/epp/response/domain/renew.rs b/epp-client/src/epp/response/domain/renew.rs
index c648d2e..8e2bc0d 100644
--- a/epp-client/src/epp/response/domain/renew.rs
+++ b/epp-client/src/epp/response/domain/renew.rs
@@ -9,9 +9,9 @@ pub type EppDomainRenewResponse = EppObject<CommandResponse<DomainRenewResult>>;
 pub struct DomainRenewData {
     #[serde(rename = "xmlns:domain")]
     xmlns: String,
-    name: StringValue,
+    pub name: StringValue,
     #[serde(rename = "exDate")]
-    expiry_date: StringValue,
+    pub expiry_date: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
diff --git a/epp-client/src/epp/response/domain/transfer.rs b/epp-client/src/epp/response/domain/transfer.rs
index cfcbe07..58e029e 100644
--- a/epp-client/src/epp/response/domain/transfer.rs
+++ b/epp-client/src/epp/response/domain/transfer.rs
@@ -14,19 +14,19 @@ pub type EppDomainTransferQueryResponse = EppObject<CommandResponse<DomainTransf
 pub struct DomainTransferData {
     #[serde(rename = "xmlns:domain")]
     xmlns: String,
-    name: StringValue,
+    pub name: StringValue,
     #[serde(rename = "trStatus")]
-    transfer_status: StringValue,
+    pub transfer_status: StringValue,
     #[serde(rename = "reID")]
-    requester_id: StringValue,
+    pub requester_id: StringValue,
     #[serde(rename = "reDate")]
-    request_date: StringValue,
+    pub request_date: StringValue,
     #[serde(rename = "acID")]
-    responder_id: StringValue,
+    pub responder_id: StringValue,
     #[serde(rename = "acDate")]
-    respond_by_date: StringValue,
+    pub respond_by_date: StringValue,
     #[serde(rename = "exDate")]
-    expiry_date: StringValue,
+    pub expiry_date: StringValue,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
diff --git a/epp-client/src/epp/response/host.rs b/epp-client/src/epp/response/host.rs
new file mode 100644
index 0000000..035f812
--- /dev/null
+++ b/epp-client/src/epp/response/host.rs
@@ -0,0 +1,5 @@
+pub mod check;
+pub mod create;
+pub mod delete;
+pub mod info;
+pub mod update;
diff --git a/epp-client/src/epp/response/host/check.rs b/epp-client/src/epp/response/host/check.rs
new file mode 100644
index 0000000..e297613
--- /dev/null
+++ b/epp-client/src/epp/response/host/check.rs
@@ -0,0 +1,34 @@
+use serde::{Deserialize, Serialize};
+
+use crate::epp::object::{EppObject, StringValue};
+use crate::epp::response::CommandResponse;
+
+pub type EppHostCheckResponse = EppObject<CommandResponse<HostCheckResult>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCheck {
+    #[serde(rename = "$value")]
+    pub name: StringValue,
+    #[serde(rename = "avail")]
+    pub available: u16,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCheckDataItem {
+    pub name: HostCheck,
+    pub reason: Option<StringValue>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCheckData {
+    #[serde(rename = "xmlns:host")]
+    xmlns: String,
+    #[serde(rename = "cd")]
+    pub host_list: Vec<HostCheckDataItem>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCheckResult {
+    #[serde(rename = "chkData")]
+    pub check_data: HostCheckData,
+}
diff --git a/epp-client/src/epp/response/host/create.rs b/epp-client/src/epp/response/host/create.rs
new file mode 100644
index 0000000..b4ba228
--- /dev/null
+++ b/epp-client/src/epp/response/host/create.rs
@@ -0,0 +1,21 @@
+use serde::{Deserialize, Serialize};
+
+use crate::epp::object::{EppObject, StringValue};
+use crate::epp::response::CommandResponse;
+
+pub type EppHostCreateResponse = EppObject<CommandResponse<HostCreateResult>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCreateData {
+    #[serde(rename = "xmlns:host")]
+    xmlns: String,
+    pub name: StringValue,
+    #[serde(rename = "crDate")]
+    pub created_at: StringValue,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostCreateResult {
+    #[serde(rename = "creData")]
+    pub check_data: HostCreateData,
+}
diff --git a/epp-client/src/epp/response/host/delete.rs b/epp-client/src/epp/response/host/delete.rs
new file mode 100644
index 0000000..691e23f
--- /dev/null
+++ b/epp-client/src/epp/response/host/delete.rs
@@ -0,0 +1,3 @@
+use crate::epp::response::EppCommandResponse;
+
+pub type EppHostDeleteResponse = EppCommandResponse;
diff --git a/epp-client/src/epp/response/host/info.rs b/epp-client/src/epp/response/host/info.rs
new file mode 100644
index 0000000..44cd613
--- /dev/null
+++ b/epp-client/src/epp/response/host/info.rs
@@ -0,0 +1,37 @@
+use serde::{Deserialize, Serialize};
+
+use crate::epp::object::data::{HostAddr, HostStatus};
+use crate::epp::object::{EppObject, StringValue};
+use crate::epp::response::CommandResponse;
+
+pub type EppHostInfoResponse = EppObject<CommandResponse<HostInfoResult>>;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostInfoData {
+    #[serde(rename = "xmlns:host")]
+    xmlns: String,
+    pub name: StringValue,
+    pub roid: StringValue,
+    #[serde(rename = "status")]
+    pub statuses: Vec<HostStatus>,
+    #[serde(rename = "addr")]
+    pub addresses: Vec<HostAddr>,
+    #[serde(rename = "clID")]
+    pub client_id: StringValue,
+    #[serde(rename = "crID")]
+    pub creator_id: StringValue,
+    #[serde(rename = "crDate")]
+    pub created_at: StringValue,
+    #[serde(rename = "upID")]
+    pub updater_id: Option<StringValue>,
+    #[serde(rename = "upDate")]
+    pub updated_at: Option<StringValue>,
+    #[serde(rename = "trDate")]
+    pub transferred_at: Option<StringValue>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct HostInfoResult {
+    #[serde(rename = "infData")]
+    pub info_data: HostInfoData,
+}
diff --git a/epp-client/src/epp/response/host/update.rs b/epp-client/src/epp/response/host/update.rs
new file mode 100644
index 0000000..64881f2
--- /dev/null
+++ b/epp-client/src/epp/response/host/update.rs
@@ -0,0 +1,3 @@
+use crate::epp::response::EppCommandResponse;
+
+pub type EppHostUpdateResponse = EppCommandResponse;
diff --git a/epp-client/src/epp/response/message.rs b/epp-client/src/epp/response/message.rs
new file mode 100644
index 0000000..5726c38
--- /dev/null
+++ b/epp-client/src/epp/response/message.rs
@@ -0,0 +1 @@
+pub mod poll;
diff --git a/epp-client/src/epp/response/message/poll.rs b/epp-client/src/epp/response/message/poll.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/epp-client/src/epp/response/message/poll.rs
@@ -0,0 +1 @@
+
diff --git a/epp-client/src/epp/xml.rs b/epp-client/src/epp/xml.rs
index 390aeff..c029d03 100644
--- a/epp-client/src/epp/xml.rs
+++ b/epp-client/src/epp/xml.rs
@@ -9,6 +9,7 @@ pub const EPP_XSI_SCHEMA_LOCATION: &str = "urn:ietf:params:xml:ns:epp-1.0 epp-1.
 
 pub const EPP_DOMAIN_XMLNS: &str = "urn:ietf:params:xml:ns:domain-1.0";
 pub const EPP_CONTACT_XMLNS: &str = "urn:ietf:params:xml:ns:contact-1.0";
+pub const EPP_HOST_XMLNS: &str = "urn:ietf:params:xml:ns:host-1.0";
 
 pub const EPP_VERSION: &str = "1.0";
 pub const EPP_LANG: &str = "en";