diff --git a/src/blockdata/constants.rs b/src/blockdata/constants.rs
index af639f41..7d835fd4 100644
--- a/src/blockdata/constants.rs
+++ b/src/blockdata/constants.rs
@@ -50,6 +50,15 @@ pub const MIN_TRANSACTION_WEIGHT: u32 = 4 * 60;
 pub const WITNESS_SCALE_FACTOR: usize = 4;
 /// The maximum allowed number of signature check operations in a block
 pub const MAX_BLOCK_SIGOPS_COST: i64 = 80_000;
+/// Mainnet (bitcoin) pubkey address prefix.
+pub const PUBKEY_ADDRESS_PREFIX_MAIN: u8 = 0; // 0x00
+/// Mainnet (bitcoin) script address prefix.
+pub const SCRIPT_ADDRESS_PREFIX_MAIN: u8 = 5; // 0x05
+/// Test (tesnet, signet, regtest) pubkey address prefix.
+pub const PUBKEY_ADDRESS_PREFIX_TEST: u8 = 111; // 0x6f
+/// Test (tesnet, signet, regtest) script address prefix.
+pub const SCRIPT_ADDRESS_PREFIX_TEST: u8 = 196; // 0xc4
+
 
 /// In Bitcoind this is insanely described as ~((u256)0 >> 32)
 pub fn max_target(_: Network) -> Uint256 {
diff --git a/src/util/address.rs b/src/util/address.rs
index 3bb3b2a2..4c639a64 100644
--- a/src/util/address.rs
+++ b/src/util/address.rs
@@ -43,6 +43,7 @@ use bech32;
 use hashes::Hash;
 use hash_types::{PubkeyHash, WPubkeyHash, ScriptHash, WScriptHash};
 use blockdata::script;
+use blockdata::constants::{PUBKEY_ADDRESS_PREFIX_MAIN, SCRIPT_ADDRESS_PREFIX_MAIN, PUBKEY_ADDRESS_PREFIX_TEST, SCRIPT_ADDRESS_PREFIX_TEST};
 use network::constants::Network;
 use util::base58;
 use util::ecdsa;
@@ -411,8 +412,8 @@ impl fmt::Display for Address {
             Payload::PubkeyHash(ref hash) => {
                 let mut prefixed = [0; 21];
                 prefixed[0] = match self.network {
-                    Network::Bitcoin => 0,
-                    Network::Testnet | Network::Signet | Network::Regtest => 111,
+                    Network::Bitcoin => PUBKEY_ADDRESS_PREFIX_MAIN,
+                    Network::Testnet | Network::Signet | Network::Regtest => PUBKEY_ADDRESS_PREFIX_TEST,
                 };
                 prefixed[1..].copy_from_slice(&hash[..]);
                 base58::check_encode_slice_to_fmt(fmt, &prefixed[..])
@@ -420,8 +421,8 @@ impl fmt::Display for Address {
             Payload::ScriptHash(ref hash) => {
                 let mut prefixed = [0; 21];
                 prefixed[0] = match self.network {
-                    Network::Bitcoin => 5,
-                    Network::Testnet | Network::Signet | Network::Regtest => 196,
+                    Network::Bitcoin => SCRIPT_ADDRESS_PREFIX_MAIN,
+                    Network::Testnet | Network::Signet | Network::Regtest => SCRIPT_ADDRESS_PREFIX_TEST,
                 };
                 prefixed[1..].copy_from_slice(&hash[..]);
                 base58::check_encode_slice_to_fmt(fmt, &prefixed[..])
@@ -535,19 +536,19 @@ impl FromStr for Address {
         }
 
         let (network, payload) = match data[0] {
-            0 => (
+            PUBKEY_ADDRESS_PREFIX_MAIN => (
                 Network::Bitcoin,
                 Payload::PubkeyHash(PubkeyHash::from_slice(&data[1..]).unwrap()),
             ),
-            5 => (
+            SCRIPT_ADDRESS_PREFIX_MAIN => (
                 Network::Bitcoin,
                 Payload::ScriptHash(ScriptHash::from_slice(&data[1..]).unwrap()),
             ),
-            111 => (
+            PUBKEY_ADDRESS_PREFIX_TEST => (
                 Network::Testnet,
                 Payload::PubkeyHash(PubkeyHash::from_slice(&data[1..]).unwrap()),
             ),
-            196 => (
+            SCRIPT_ADDRESS_PREFIX_TEST => (
                 Network::Testnet,
                 Payload::ScriptHash(ScriptHash::from_slice(&data[1..]).unwrap()),
             ),