dns.md

List DNS information

Query NS record

• dig command

  $ dig @8.8.8.8 +short NS txone-networks.com

Trace DNS command

  $ dig +trace @8.8.8.8 odc-stg.cs.txone-networks.com
  $ dig +trace +short @8.8.8.8 odc-stg.cs.txone-networks.com

查 DNS 時，出現 servfail 訊息

• A SERVFAIL answer tells you there's an issue reaching the DNS server for your domain, or that it isn't set up properly.
• DNS servfail at some of Nameservers

reference

• How To Use nslookup Command & Dig Command For DNS Check Test
• Dig 常用參數 與 DNS 偵錯追蹤
• How do I find the authoritative name-server for a domain name?