diff --git a/chain/rust/src/byron/utils.rs b/chain/rust/src/byron/utils.rs
index 0dc3291a..b098f6be 100644
--- a/chain/rust/src/byron/utils.rs
+++ b/chain/rust/src/byron/utils.rs
@@ -154,14 +154,16 @@ impl AddressContent {
 
         // mainnet is implied if omitted
         let protocol_magic = self.byron_protocol_magic();
-        match protocol_magic {
-            magic if magic == NetworkInfo::mainnet().protocol_magic() => {
-                Ok(NetworkInfo::mainnet().network_id())
-            }
-            magic if magic == NetworkInfo::testnet().protocol_magic() => {
-                Ok(NetworkInfo::testnet().network_id())
-            }
-            _ => Err(ByronAddressError::UnknownNetwork(protocol_magic)),
+        if protocol_magic == NetworkInfo::mainnet().protocol_magic() {
+            Ok(NetworkInfo::mainnet().network_id())
+        } else if protocol_magic == NetworkInfo::testnet().protocol_magic()
+            || protocol_magic == NetworkInfo::preprod().protocol_magic()
+            || protocol_magic == NetworkInfo::preview().protocol_magic()
+            || protocol_magic == NetworkInfo::sancho_testnet().protocol_magic()
+        {
+            Ok(NetworkInfo::testnet().network_id())
+        } else {
+            Err(ByronAddressError::UnknownNetwork(protocol_magic))
         }
     }
 
diff --git a/chain/rust/src/genesis/network_info.rs b/chain/rust/src/genesis/network_info.rs
index d1dafcf0..eb9aef0d 100644
--- a/chain/rust/src/genesis/network_info.rs
+++ b/chain/rust/src/genesis/network_info.rs
@@ -1,6 +1,9 @@
 use crate::{byron::ProtocolMagic, plutus::CostModels};
 use cml_core::{
-    network::{BYRON_MAINNET_NETWORK_MAGIC, BYRON_TESTNET_NETWORK_MAGIC},
+    network::{
+        BYRON_MAINNET_NETWORK_MAGIC, BYRON_TESTNET_NETWORK_MAGIC, PREPROD_NETWORK_MAGIC,
+        PREVIEW_NETWORK_MAGIC, SANCHO_TESTNET_NETWORK_MAGIC,
+    },
     Int,
 };
 
@@ -16,25 +19,50 @@ impl NetworkInfo {
             protocol_magic,
         }
     }
+
     pub fn network_id(&self) -> u8 {
         self.network_id
     }
+
     pub fn protocol_magic(&self) -> ProtocolMagic {
         self.protocol_magic
     }
 
-    pub fn testnet() -> NetworkInfo {
-        NetworkInfo {
+    /// This is the old testnet - most likely you want to use preview()/preprod()
+    pub fn testnet() -> Self {
+        Self {
             network_id: 0b0000,
             protocol_magic: ProtocolMagic::from(BYRON_TESTNET_NETWORK_MAGIC),
         }
     }
-    pub fn mainnet() -> NetworkInfo {
-        NetworkInfo {
+
+    pub fn mainnet() -> Self {
+        Self {
             network_id: 0b0001,
             protocol_magic: ProtocolMagic::from(BYRON_MAINNET_NETWORK_MAGIC),
         }
     }
+
+    pub fn preview() -> Self {
+        Self {
+            network_id: 0b0000,
+            protocol_magic: ProtocolMagic::from(PREVIEW_NETWORK_MAGIC),
+        }
+    }
+
+    pub fn preprod() -> Self {
+        Self {
+            network_id: 0b0000,
+            protocol_magic: ProtocolMagic::from(PREPROD_NETWORK_MAGIC),
+        }
+    }
+
+    pub fn sancho_testnet() -> Self {
+        Self {
+            network_id: 0b0000,
+            protocol_magic: ProtocolMagic::from(SANCHO_TESTNET_NETWORK_MAGIC),
+        }
+    }
 }
 
 // TODO: https://github.com/dcSpark/cardano-multiplatform-lib/issues/92
diff --git a/chain/wasm/src/genesis/mod.rs b/chain/wasm/src/genesis/mod.rs
new file mode 100644
index 00000000..94897451
--- /dev/null
+++ b/chain/wasm/src/genesis/mod.rs
@@ -0,0 +1 @@
+pub mod network_info;
diff --git a/chain/wasm/src/genesis/network_info.rs b/chain/wasm/src/genesis/network_info.rs
new file mode 100644
index 00000000..18541028
--- /dev/null
+++ b/chain/wasm/src/genesis/network_info.rs
@@ -0,0 +1,45 @@
+use crate::byron::utils::ProtocolMagic;
+use cml_core_wasm::impl_wasm_conversions;
+use wasm_bindgen::prelude::wasm_bindgen;
+
+#[wasm_bindgen]
+pub struct NetworkInfo(cml_chain::genesis::network_info::NetworkInfo);
+
+impl_wasm_conversions!(cml_chain::genesis::network_info::NetworkInfo, NetworkInfo);
+
+#[wasm_bindgen]
+impl NetworkInfo {
+    pub fn new(network_id: u8, protocol_magic: &ProtocolMagic) -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::new(network_id, *protocol_magic.as_ref())
+            .into()
+    }
+
+    pub fn network_id(&self) -> u8 {
+        self.0.network_id()
+    }
+
+    pub fn protocol_magic(&self) -> ProtocolMagic {
+        self.0.protocol_magic().into()
+    }
+
+    /// This is the old testnet - most likely you want to use preview()/preprod()
+    pub fn testnet() -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::testnet().into()
+    }
+
+    pub fn mainnet() -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::mainnet().into()
+    }
+
+    pub fn preview() -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::preview().into()
+    }
+
+    pub fn preprod() -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::preprod().into()
+    }
+
+    pub fn sancho_testnet() -> Self {
+        cml_chain::genesis::network_info::NetworkInfo::sancho_testnet().into()
+    }
+}
diff --git a/chain/wasm/src/lib.rs b/chain/wasm/src/lib.rs
index d9176e9d..5432aef5 100644
--- a/chain/wasm/src/lib.rs
+++ b/chain/wasm/src/lib.rs
@@ -20,6 +20,7 @@ pub mod certs;
 pub mod crypto;
 pub mod deposit;
 pub mod fees;
+pub mod genesis;
 pub mod governance;
 pub mod json;
 pub mod min_ada;
diff --git a/core/rust/src/network.rs b/core/rust/src/network.rs
index a5e7688f..5e3f631a 100644
--- a/core/rust/src/network.rs
+++ b/core/rust/src/network.rs
@@ -6,6 +6,9 @@ use std::io::{BufRead, Write};
 
 pub static BYRON_MAINNET_NETWORK_MAGIC: u32 = 764824073;
 pub static BYRON_TESTNET_NETWORK_MAGIC: u32 = 1097911063;
+pub static SANCHO_TESTNET_NETWORK_MAGIC: u32 = 4;
+pub static PREPROD_NETWORK_MAGIC: u32 = 1;
+pub static PREVIEW_NETWORK_MAGIC: u32 = 2;
 
 impl std::fmt::Display for ProtocolMagic {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {