Merge pull request #20457 from JustStudio7/main

[not subdomain] suggest some subdomains to be reserved

util/reserved.json

@@ -24,6 +24,8 @@
     "catalog",
     "chat",
     "checkout",
+    "cname",
+    "cname[1-99]",
     "co",
     "com",
     "com[1-9]",
@@ -105,6 +107,8 @@
     "signin",
     "signout",
     "signup",
+    "srv",
+    "srv[1-99]",
     "staff",
     "statistics",
     "stats",
@@ -120,6 +124,8 @@
     "tld",
     "token",
     "tokens",
+    "txt",
+    "txt[1-9999]",
     "url",
     "url[1-9999]",
     "user",