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Total

DNS

Email

Security

Network

Availability

Domaindf.gov.br

IPv41

IPv60

MX records2

StatusActive

Domain technical report

df.gov.br

Generated: 2026-08-09T23:07:49-05:00 · Cached result

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IPv41

IPv60

MX2

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓

CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

2 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

Valid TLS certificate0 / 55 pts · Security

No valid certificate was retrieved.

Certificate lifetime0 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

HTTP response0 / 40 pts · Availability

No successful HTTP response.

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

131.72.221.22

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

5 smtp054.gdfnet.df.gov.br.
5 smtp053.gdfnet.df.gov.br.

TXT

4 record(s)

"v=spf1 ip4:131.72.220.0/22 -all"
"irsnoDc7JmMjeMeLJl7OC6OJ8aH1fjydSNKUi/5oQe4="
"_globalsign-domain-verification=YnEyyO11qIhpmG7T3rgTwgEnMLfDUsQUfMHQ-i0_Qx"
"google-site-verification=grMNm9FdqrzCbG7WREEDKXnzwqjF1PXmLJWLQWtBdRE"

NS

2 record(s)

dns2.df.gov.br.
dns1.gdfnet.df.gov.br.

SOA

1 record(s)

dns1.gdfnet.df.gov.br. suporte.gdfnet.df.gov.br. 2026080701 28800 7200 2400000 86400

CAA

9 record(s)

0 issuewild "sectigo.com"
0 issuewild "pki.goog"
0 issue "pki.goog"
0 issuewild "letsencrypt.org"
0 issue "sectigo.com"
0 issue "letsencrypt.org"
0 issuewild "amazontrust.com"
0 issue "certificados.serpro.gov.br"
0 issue "amazontrust.com"

DS

0 record(s)

—

Not configured

DNSKEY

0 record(s)

—

Not configured

RRSIG

0 record(s)

—

Not configured

NSEC

0 record(s)

—

Not configured

NSEC3

0 record(s)

—

Not configured

SRV

0 record(s)

—

Not configured

NAPTR

0 record(s)

—

Not configured

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 ip4:131.72.220.0/22 -all

DMARC

Configured

v=DMARC1; p=none; rua=mailto:suporte@gdfnet.df.gov.br

DKIM

Not found

—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

No data

Title

Description

Final URL

https://df.gov.br/

HTTP status

HTTP

Status

Final URL

https://df.gov.br/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Casa Civil do DF

wpsv100

Valid from

2019-01-23T11:05:49-06:00

Valid until

2020-01-23T11:05:49-06:00

Days remaining

-2391

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES128-GCM-SHA256

Security headers

0 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

—

X-Frame-OptionsNot detected

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

131.72.221.22

206,36 ms

Cloudflare

1.1.1.1

131.72.221.22

19,23 ms

Quad9

9.9.9.9

131.72.221.22

23,32 ms

OpenDNS

208.67.222.222

131.72.221.22

25,87 ms

AdGuard

94.140.14.14

131.72.221.22

46,67 ms

IP, geolocation and ASNAssociated network information

131.72.221.22

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

smtp054.gdfnet.df.gov.br

Port 25: Closed/unreachable - 159.2 ms - 
Port 465: Closed/unreachable - 312.7 ms - 220 smtp054.gdfnet.df.gov.br ESMTP
Port 587: Closed/unreachable - 155.6 ms - 220 smtp054.gdfnet.df.gov.br ESMTP

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