From aa95123bf6bd1516d46ba5e0854a61a9760ae76c Mon Sep 17 00:00:00 2001
From: bryan newbold <bnewbold@robocracy.org>
Date: Thu, 5 Oct 2023 17:42:37 -0700
Subject: [PATCH] syntax: disallow .example and .alt TLDs

---
 atproto/syntax/handle.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/atproto/syntax/handle.go b/atproto/syntax/handle.go
index 9693f8b06..0efe29179 100644
--- a/atproto/syntax/handle.go
+++ b/atproto/syntax/handle.go
@@ -31,6 +31,8 @@ func ParseHandle(raw string) (Handle, error) {
 }
 
 // Some top-level domains (TLDs) are disallowed for registration across the atproto ecosystem. The *syntax* is valid, but these should never be considered acceptable handles for account registration or linking.
+//
+// The reserved '.test' TLD is allowed, for testing and development. It is expected that '.test' domain resolution will fail in a real-world network.
 func (h Handle) AllowedTLD() bool {
 	switch h.TLD() {
 	case "local",
@@ -38,7 +40,9 @@ func (h Handle) AllowedTLD() bool {
 		"invalid",
 		"localhost",
 		"internal",
-		"onion":
+		"example",
+		"onion",
+		"alt":
 		return false
 	}
 	return true