NSToolKit
NSToolKit
free network tools

DNS records for www.gov.br

Findings

  • [INFO] An SPF record is published but no MX records are present. This is normal for send-only domains but worth confirming if you expect to receive mail.

A records

[
  {
    "type": "A",
    "value": "161.148.164.31"
  }
]

AAAA records

[
  {
    "type": "AAAA",
    "value": "2804:151:3:2:161:148:164:31"
  }
]

NS records

[
  {
    "type": "NS",
    "value": "spo2.serpro.gov.br"
  },
  {
    "type": "NS",
    "value": "bsa2.serpro.gov.br"
  },
  {
    "type": "NS",
    "value": "bsa1.serpro.gov.br"
  },
  {
    "type": "NS",
    "value": "spo1.serpro.gov.br"
  }
]

TXT records

[
  {
    "type": "TXT",
    "entries": [
      "bE6LcxVH1400jsb9rg2yrTP0r6mdQlD21g2PKwPPO4s="
    ]
  },
  {
    "type": "TXT",
    "entries": [
      "v=spf1 ip4:161.148.21.192/26 ip4:161.148.50.192/26 -all"
    ]
  }
]

SOA records

[
  {
    "type": "SOA",
    "nsname": "bsa1.serpro.gov.br",
    "hostmaster": "hostmaster.serpro.gov.br",
    "serial": 2026052100,
    "refresh": 14400,
    "retry": 3600,
    "expire": 1814400,
    "minttl": 900
  }
]

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 www.gov.br.

Related tools: DNS Lookup · SPF Checker · DMARC Lookup