diff --git a/clatd.conf b/clatd.conf
index 578da59..0d4b79e 100644
--- a/clatd.conf
+++ b/clatd.conf
@@ -11,7 +11,7 @@
 # get the plat_subnet from dns lookups (requires DNS64)
 plat_from_dns64 yes
 # hostname to use to lookup plat subnet. must contain only A records
-plat_from_dns64_hostname ipv4.google.com
+plat_from_dns64_hostname ipv4only.arpa
 
 # plat subnet to send ipv4 traffic to. This is a /96 subnet.
 # This setting only makes sense with: plat_from_dns64 no