DNS records for docker.io

A records

[
  {
    "type": "A",
    "value": "44.217.254.80"
  },
  {
    "type": "A",
    "value": "100.48.162.199"
  },
  {
    "type": "A",
    "value": "3.95.140.206"
  }
]

AAAA records

[
  {
    "type": "AAAA",
    "value": "2600:1f18:2148:bc00:2a89:ac32:1608:40ee"
  },
  {
    "type": "AAAA",
    "value": "2600:1f18:2148:bc01:df26:ecf8:5858:b5c6"
  },
  {
    "type": "AAAA",
    "value": "2600:1f18:2148:bc02:ef7:f528:30d2:1de"
  }
]

MX records

[
  {
    "type": "MX",
    "exchange": "aspmx3.googlemail.com",
    "priority": 30
  },
  {
    "type": "MX",
    "exchange": "alt1.aspmx.l.google.com",
    "priority": 20
  },
  {
    "type": "MX",
    "exchange": "aspmx.l.google.com",
    "priority": 10
  },
  {
    "type": "MX",
    "exchange": "aspmx2.googlemail.com",
    "priority": 30
  },
  {
    "type": "MX",
    "exchange": "aspmx5.googlemail.com",
    "priority": 30
  },
  {
    "type": "MX",
    "exchange": "aspmx4.googlemail.com",
    "priority": 30
  }
]

NS records

[
  {
    "type": "NS",
    "value": "ns-513.awsdns-00.net"
  },
  {
    "type": "NS",
    "value": "ns-1168.awsdns-18.org"
  },
  {
    "type": "NS",
    "value": "ns-1827.awsdns-36.co.uk"
  },
  {
    "type": "NS",
    "value": "ns-421.awsdns-52.com"
  }
]

TXT records

[
  {
    "type": "TXT",
    "entries": [
      "google-site-verification=v2_0BdJWKUR2kM7Ysv_QB9LhCqd2Xn6QCZiInuaRwFc"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "google-site-verification=cusX3h3wUlq3D6vk24INmIXpuJdQ46-uKjIAM9Of8Lo"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "detectify-verification=87a64c3bf3301354588d90672bd1b74e"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "v=spf1 include:mailgun.org -all"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "994564986-4236403"
    ]
  }
]

SOA records

[
  {
    "type": "SOA",
    "nsname": "ns-513.awsdns-00.net",
    "hostmaster": "awsdns-hostmaster.amazon.com",
    "serial": 1,
    "refresh": 7200,
    "retry": 900,
    "expire": 1209600,
    "minttl": 86400
  }
]

CAA records

[
  {
    "type": "CAA",
    "critical": 0,
    "tag": "issue",
    "value": "letsencrypt.org"
  },
  {
    "type": "CAA",
    "critical": 0,
    "tag": "issue",
    "value": "amazon.com"
  },
  {
    "type": "CAA",
    "critical": 0,
    "tag": "issue",
    "value": "pki.goog"
  },
  {
    "type": "CAA",
    "critical": 0,
    "tag": "iodef",
    "value": "mailto:[email protected]"
  },
  {
    "type": "CAA",
    "critical": 0,
    "tag": "issue",
    "value": "comodoca.com"
  }
]

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 docker.io.

Related tools: DNS Lookup · SPF Checker · DMARC Lookup