DNS records for gnu.org

A records

[
  {
    "type": "A",
    "value": "209.51.188.116"
  }
]

AAAA records

[
  {
    "type": "AAAA",
    "value": "2001:470:142:5::116"
  }
]

MX records

[
  {
    "type": "MX",
    "exchange": "eggs.gnu.org",
    "priority": 10
  }
]

NS records

[
  {
    "type": "NS",
    "value": "ns2.gnu.org"
  },
  {
    "type": "NS",
    "value": "ns1.gnu.org"
  },
  {
    "type": "NS",
    "value": "ns4.gnu.org"
  }
]

TXT records

[
  {
    "type": "TXT",
    "entries": [
      "v=spf1 ip4:209.51.188.0/24 ip6:2001:470:142::/48 ip4:18.4.89.21 ip4:15.204.209.91 ip6:2604:2dc0:101:200::1d07 -all"
    ]
  }
]

SOA records

[
  {
    "type": "SOA",
    "nsname": "ns1.gnu.org",
    "hostmaster": "hostmaster.gnu.org",
    "serial": 2026051809,
    "refresh": 3600,
    "retry": 120,
    "expire": 1209600,
    "minttl": 3600
  }
]

CAA records

[
  {
    "type": "CAA",
    "critical": 0,
    "tag": "issue",
    "value": "letsencrypt.org"
  }
]

What does this mean?

These records are pulled live from authoritative DNS at request time and re-validated daily. Use them to debug routing, deliverability, and TLS issues for gnu.org.

Related tools: DNS Lookup · SPF Checker · DMARC Lookup