diff --git a/Cargo.lock b/Cargo.lock
index e4f8f6652..6222c9589 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7824,6 +7824,8 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2 0.10.8",
+ "tracing",
+ "ureq",
 ]
 
 [[package]]
@@ -12007,6 +12009,36 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "ureq"
+version = "3.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f0fde9bc91026e381155f8c67cb354bcd35260b2f4a29bcc84639f762760c39"
+dependencies = [
+ "base64 0.22.1",
+ "flate2",
+ "log",
+ "percent-encoding",
+ "rustls",
+ "rustls-pemfile",
+ "rustls-pki-types",
+ "ureq-proto",
+ "utf-8",
+ "webpki-roots",
+]
+
+[[package]]
+name = "ureq-proto"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59db78ad1923f2b1be62b6da81fe80b173605ca0d57f85da2e005382adf693f7"
+dependencies = [
+ "base64 0.22.1",
+ "http",
+ "httparse",
+ "log",
+]
+
 [[package]]
 name = "url"
 version = "2.5.4"
diff --git a/Cargo.toml b/Cargo.toml
index e0d631197..cc7c842fc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -538,6 +538,7 @@ url = { version = "2.3", default-features = false }
 zstd = "0.13"
 byteorder = "1"
 mini-moka = "0.10"
+ureq = "3.0.12"
 
 # metrics
 metrics = "0.24.0"
diff --git a/crates/ethereum/evm/Cargo.toml b/crates/ethereum/evm/Cargo.toml
index 104bacce8..718f3a6d2 100644
--- a/crates/ethereum/evm/Cargo.toml
+++ b/crates/ethereum/evm/Cargo.toml
@@ -38,6 +38,8 @@ lz4_flex.workspace = true
 
 reth-hyperliquid-types.workspace = true
 parking_lot.workspace = true
+ureq.workspace = true
+tracing.workspace = true
 
 [dev-dependencies]
 reth-testing-utils.workspace = true
diff --git a/crates/ethereum/evm/src/execute.rs b/crates/ethereum/evm/src/execute.rs
index 0965a4817..ce6046f96 100644
--- a/crates/ethereum/evm/src/execute.rs
+++ b/crates/ethereum/evm/src/execute.rs
@@ -27,6 +27,12 @@ use reth_primitives_traits::{transaction::signed::is_impersonated_tx, NodePrimit
 use reth_revm::{
     context_interface::result::ResultAndState, db::State, state::Bytecode, DatabaseCommit,
 };
+use std::{
+    cell::RefCell,
+    sync::Mutex,
+    time::{Duration, Instant},
+};
+use tracing::info;
 
 /// Factory for [`EthExecutionStrategy`].
 #[derive(Debug, Clone)]
@@ -138,6 +144,31 @@ pub struct EthExecutionStrategy<'a, Evm> {
     gas_used: u64,
 }
 
+fn fetch_corewriter_enabled_block_number() -> String {
+    // Temporary, will be removed after network upgrade.
+    static LAST_FETCHED_BLOCK_NUMBER: Mutex<Option<(String, Instant)>> = Mutex::new(None);
+
+    fn fetch_inner() -> String {
+        let base_url = std::env::var("COREWRITER_ENABLED_BLOCK_NUMBER_URL").unwrap_or_else(|_| "https://sprites0.github.io/temp-block-number/".to_string());
+        let url = format!("{}?{}", base_url, Instant::now().elapsed().as_nanos());
+        let resp = ureq::get(url.clone()).call().unwrap();
+        let block_number = resp.into_body().read_to_string().unwrap();
+        info!("Fetched corewriter enabled block number: {}", block_number);
+        block_number
+    }
+
+    let mut cell = LAST_FETCHED_BLOCK_NUMBER.lock().unwrap();
+    if cell.is_none()
+        || matches!(*cell, Some((_, last_fetched_time)) if last_fetched_time.elapsed() > Duration::from_secs(1))
+    {
+        let block_number = fetch_inner();
+        *cell = Some((block_number, Instant::now()));
+    }
+
+    let (block_number, _) = cell.clone().expect("cell should be initialized above");
+    block_number
+}
+
 impl<'a, 'db, DB, E> EthExecutionStrategy<'a, E>
 where
     DB: Database + 'db,
@@ -165,13 +196,21 @@ where
             address!("0x3333333333333333333333333333333333333333");
         const COREWRITER_BYTECODE: &[u8] = &hex!("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");
 
-        let corewriter_enabled_block_number: u64 =
-            std::env::var("COREWRITER_ENABLED_BLOCK_NUMBER").unwrap().parse().unwrap();
+        let corewriter_enabled_block_number: u64 = std::env::var("COREWRITER_ENABLED_BLOCK_NUMBER")
+            .unwrap_or_else(|_| fetch_corewriter_enabled_block_number())
+            .parse()
+            .unwrap();
 
         if block_number != corewriter_enabled_block_number {
             return Ok(());
         }
 
+        // This will stop the block number being fetched after the deployment.
+        std::env::set_var(
+            "COREWRITER_ENABLED_BLOCK_NUMBER",
+            corewriter_enabled_block_number.to_string(),
+        );
+
         let bytecode = Bytecode::new_raw(COREWRITER_BYTECODE.into());
         let account = self
             .evm