سجل NS
Lists the authoritative name servers for a zone.
ما هو سجل NS؟
NS records tell the DNS system which servers are responsible for a given domain. They appear at the apex of a zone and are also delegated from the parent zone (the TLD operator). Recursive resolvers use NS to find which IPs to ask for further records.
مثال على ملف منطقة DNS
example.com. 86400 IN NS ns1.example.com. example.com. 86400 IN NS ns2.example.com.
حالات الاستخدام الشائعة
- ▸Change DNS providers — update the NS records at the registrar.
- ▸Delegate a subdomain to a different DNS provider.
- ▸Split-horizon / private DNS by changing internal NS targets.
- ▸Diagnose propagation: query NS records via different resolvers (1.1.1.1, 8.8.8.8, 9.9.9.9) to see who has the new set.
مزالق شائعة
The NS set at the parent zone must match the apex NS set inside the child zone. Mismatches ("lame delegation") cause intermittent failures hard to debug.