diff --git a/data/category-ip-geo-detect b/data/category-ip-geo-detect
index 908ff3f5..64cf77f2 100644
--- a/data/category-ip-geo-detect
+++ b/data/category-ip-geo-detect
@@ -134,6 +134,8 @@ wtfismyip.com
 
 # Subdomains/internal api used for ip-geo-detect
 full:checkip.amazonaws.com
+full:checkip.dyndns.org
+full:checkip.dyn.com
 full:ip.comss.net
 full:ipv4-check-perf.radar.cloudflare.com
 full:ipv6-check-perf.radar.cloudflare.com