DNS records for firefox.com

A records

[
  {
    "type": "A",
    "value": "35.190.14.201"
  }
]

AAAA records

[
  {
    "type": "AAAA",
    "value": "2600:1901:0:c197::"
  }
]

MX records

[
  {
    "type": "MX",
    "exchange": "smtp1.mdc1.mozilla.com",
    "priority": 10
  }
]

NS records

[
  {
    "type": "NS",
    "value": "ns5-65.akam.net"
  },
  {
    "type": "NS",
    "value": "ns4-64.akam.net"
  },
  {
    "type": "NS",
    "value": "ns1-240.akam.net"
  },
  {
    "type": "NS",
    "value": "ns7-66.akam.net"
  }
]

TXT records

[
  {
    "type": "TXT",
    "entries": [
      "google-site-verification=ZqFMUZ8Gzf13U_nchwvBgRE_sRAxAR5xLz-X5w4BU4s"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "v=spf1 mx a include:amazonses.com include:mail.zendesk.com include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email -all"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "3mjnbdj3h9wpslgz0gfly0pbr94wd12y"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "_vrrc3v9222jxd6yhvt728lc4om6z0ff"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "google-gws-recovery-domain-verification=70476672"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "facebook-domain-verification=wcer1w80xkwrzqftwc3shhkel9ys8m"
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "kr1887r7cjn94rzlgp1bpnj8v94wd3mg"
    ]
  }
]

SOA records

[
  {
    "type": "SOA",
    "nsname": "infoblox1.private.mdc1.mozilla.com",
    "hostmaster": "sysadmins.mozilla.org",
    "serial": 2018043038,
    "refresh": 180,
    "retry": 180,
    "expire": 1209600,
    "minttl": 3600
  }
]

CAA records

[
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "awstrust.com"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "letsencrypt.org"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "iodef",
    "value": "mailto:[email protected]"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "amazon.com"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "amazontrust.com"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "amazonaws.com"
  },
  {
    "type": "CAA",
    "critical": 128,
    "tag": "issue",
    "value": "digicert.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 firefox.com.

Related tools: DNS Lookup · SPF Checker · DMARC Lookup