diff --git a/apps/ensapi/src/di.ts b/apps/ensapi/src/di.ts
index 549af9500..b7e1fac60 100644
--- a/apps/ensapi/src/di.ts
+++ b/apps/ensapi/src/di.ts
@@ -1,5 +1,5 @@
 import type { ChainId } from "enssdk";
-import { createPublicClient, fallback, http, type PublicClient } from "viem";
+import type { PublicClient } from "viem";
 
 import { type ENSNamespaceId, getENSRootChainId } from "@ensnode/datasources";
 import { type EnsDbConfig, EnsDbReader } from "@ensnode/ensdb-sdk";
@@ -18,6 +18,7 @@ import { buildConfigFromEnvironment, buildRootChainRpcConfig } from "@/config/co
 import { buildEnsDbConfigFromEnvironment } from "@/config/ensdb-config";
 import type { EnsApiEnvironment } from "@/config/environment";
 import { makeLogger } from "@/lib/logger";
+import { buildRootChainPublicClient } from "@/lib/public-client";
 
 const logger = makeLogger("di");
 
@@ -152,12 +153,10 @@ export function buildEnsApiDiContext(ensApiEnvironment: EnsApiEnvironment): EnsA
 
     get rootChainPublicClient(): PublicClient {
       if (instances.rootChainPublicClient === undefined) {
-        // Create an viem#PublicClient that uses a fallback() transport with all specified HTTP RPCs
-        instances.rootChainPublicClient = createPublicClient({
-          transport: fallback(
-            context.rootChainRpcConfig.httpRPCs.map((url) => http(url.toString())),
-          ),
-        });
+        instances.rootChainPublicClient = buildRootChainPublicClient(
+          context.rootChainRpcConfig,
+          context.namespace,
+        );
       }
 
       return instances.rootChainPublicClient;
diff --git a/apps/ensapi/src/lib/public-client.ts b/apps/ensapi/src/lib/public-client.ts
new file mode 100644
index 000000000..083068520
--- /dev/null
+++ b/apps/ensapi/src/lib/public-client.ts
@@ -0,0 +1,23 @@
+import { createPublicClient, fallback, http, type PublicClient } from "viem";
+
+import { type ENSNamespaceId, getENSRootChain } from "@ensnode/datasources";
+import type { RpcConfig } from "@ensnode/ensnode-sdk/internal";
+
+/**
+ * Builds a viem {@link PublicClient} for the ENS root chain with a fallback transport over all HTTP RPCs.
+ */
+export function buildRootChainPublicClient(
+  rootChainRpcConfig: RpcConfig,
+  namespace: ENSNamespaceId,
+): PublicClient {
+  return createPublicClient({
+    chain: getENSRootChain(namespace),
+    batch: {
+      multicall: {
+        // bytes per batch; default is 1024
+        batchSize: 2048,
+      },
+    },
+    transport: fallback(rootChainRpcConfig.httpRPCs.map((url) => http(url.toString()))),
+  });
+}