diff --git a/Momento/MomentoSigner.cs b/Momento/MomentoSigner.cs
index a21d0ab9..294c8050 100644
--- a/Momento/MomentoSigner.cs
+++ b/Momento/MomentoSigner.cs
@@ -27,7 +27,7 @@ public MomentoSigner(string jwkJsonString)
         /// <summary>
         /// Create a pre-signed HTTPS URL.
         /// </summary>
-        /// <param name="hostname">Hostname of the SimpleCacheService. Use the value returned from CreateSigningKey's response.</param>
+        /// <param name="hostname">Hostname of the SimpleCacheService. Use the value returned from CreateSigningKey's response. A rest keyword is prepended to the hostname</param>
         /// <param name="signingRequest">The parameters used for generating a pre-signed URL</param>
         /// <returns></returns>
         public string CreatePresignedUrl(string hostname, SigningRequest signingRequest)
@@ -38,8 +38,8 @@ public string CreatePresignedUrl(string hostname, SigningRequest signingRequest)
 
             return signingRequest.CacheOperation switch
             {
-                CacheOperation.GET => $"https://{hostname}/cache/get/{cacheName}/{cacheKey}?token={jwtToken}",
-                CacheOperation.SET => $"https://{hostname}/cache/set/{cacheName}/{cacheKey}?ttl_milliseconds={signingRequest.TtlSeconds * (ulong)1000}&token={jwtToken}",
+                CacheOperation.GET => $"https://rest.{hostname}/cache/get/{cacheName}/{cacheKey}?token={jwtToken}",
+                CacheOperation.SET => $"https://rest.{hostname}/cache/set/{cacheName}/{cacheKey}?ttl_milliseconds={signingRequest.TtlSeconds * (ulong)1000}&token={jwtToken}",
                 _ => throw new NotImplementedException($"Unhandled {signingRequest.CacheOperation}")
             };
         }
diff --git a/MomentoTest/MomentoSignerTest.cs b/MomentoTest/MomentoSignerTest.cs
index 6a978c24..0db53123 100644
--- a/MomentoTest/MomentoSignerTest.cs
+++ b/MomentoTest/MomentoSignerTest.cs
@@ -50,7 +50,7 @@ public void TestPresignedUrlForGet()
             bool result = Uri.TryCreate(url, UriKind.Absolute, out uriResult);
             Assert.True(result);
             Assert.Equal(Uri.UriSchemeHttps, uriResult.Scheme);
-            Assert.StartsWith("https://foobar.com/cache/get/testCacheName/testCacheKey?token=", url);
+            Assert.StartsWith("https://rest.foobar.com/cache/get/testCacheName/testCacheKey?token=", url);
         }
 
         [Fact]
@@ -68,7 +68,7 @@ public void TestPresignedUrlForSet()
             bool result = Uri.TryCreate(url, UriKind.Absolute, out uriResult);
             Assert.True(result);
             Assert.Equal(Uri.UriSchemeHttps, uriResult.Scheme);
-            Assert.StartsWith("https://foobar.com/cache/set/testCacheName/testCacheKey?ttl_milliseconds=4294967295000&token=", url);
+            Assert.StartsWith("https://rest.foobar.com/cache/set/testCacheName/testCacheKey?ttl_milliseconds=4294967295000&token=", url);
         }
 
         [Fact]
@@ -83,7 +83,7 @@ public void TestUrlEncoding()
             bool result = Uri.TryCreate(url, UriKind.Absolute, out uriResult);
             Assert.True(result);
             Assert.Equal(Uri.UriSchemeHttps, uriResult.Scheme);
-            Assert.StartsWith("https://foobar.com/cache/get/testCacheName/%23%24%26%5c%27%2b%2c%2f%3a%3b%3d%3f%40%5b%5d?token=", url);
+            Assert.StartsWith("https://rest.foobar.com/cache/get/testCacheName/%23%24%26%5c%27%2b%2c%2f%3a%3b%3d%3f%40%5b%5d?token=", url);
         }
 
         [Fact]