diff --git a/script/ensure-no-404s b/script/ensure-no-404s
index 9c34277..0f88b97 100755
--- a/script/ensure-no-404s
+++ b/script/ensure-no-404s
@@ -6,7 +6,7 @@ set -o pipefail
 TEMPORARY_ALLOWLIST='^(radar|ping)\.'
 
 python3 script/list-domains.py | \
-  egrep '^(CNAME|ALIAS|A)' | egrep -v '10\.0\.1' | egrep -v '(baymax|delwyn)\.' | \
+  egrep '^(CNAME|ALIAS|A)' | egrep -v '10\.0\.1' | egrep -v '(baymax|delwyn)\.' | egrep -v '\.ts\.net\.$' \
   awk '{print $2}' | sort | uniq | \
   egrep -v '^(imap|smtp|pop|webmail|email|\*)\.' | \
   egrep -v "$TEMPORARY_ALLOWLIST" | \