diff --git a/src/constants/constants.ts b/src/constants/constants.ts
index 6ba8ca800..ecabaabb6 100644
--- a/src/constants/constants.ts
+++ b/src/constants/constants.ts
@@ -77,7 +77,8 @@ export const REDIRECTION_SERVER_IPS = [
   "18.139.47.66",
 ]
 export const DNS_INDIRECTION_DOMAIN = "hostedon.isomer.gov.sg"
-export const DNS_CNAME_SUFFIXES = ["cloudfront.net", "kxcdn.com"]
+export const DNS_KEYCDN_SUFFIX = "kxcdn.com"
+export const DNS_CNAME_SUFFIXES = ["cloudfront.net", DNS_KEYCDN_SUFFIX]
 export const DNS_INDIRECTION_REPO = "isomer-indirection"
 export const ISOMER_ADMIN_EMAIL = "admin@isomer.gov.sg"
 export const ISOMER_SUPPORT_EMAIL = "support@isomer.gov.sg"
diff --git a/support/routes/v2/isobot/ops/botService.ts b/support/routes/v2/isobot/ops/botService.ts
index e006eea3f..894ec6e9c 100644
--- a/support/routes/v2/isobot/ops/botService.ts
+++ b/support/routes/v2/isobot/ops/botService.ts
@@ -9,6 +9,7 @@ import { config } from "@config/config"
 import {
   DNS_CNAME_SUFFIXES,
   DNS_INDIRECTION_DOMAIN,
+  DNS_KEYCDN_SUFFIX,
   REDIRECTION_SERVER_IPS,
 } from "@root/constants"
 import logger from "@root/logger/logger"
@@ -206,7 +207,7 @@ class BotService {
     const isIntermediateValid =
       intermediateRecords &&
       ((cnameRecord &&
-        cnameRecord.endsWith(".kxcdn.com") &&
+        cnameRecord.endsWith(`.${DNS_KEYCDN_SUFFIX}`) &&
         intermediateRecords.length === 1) ||
         (intermediateRecords.length === 4 &&
           (isDomainCnameCorrect ||