DNS Report: ubuntu.com

Generated: 2026-08-08T17:46:42-05:00

89/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/303 IPv4 address(es) detected.
OKIPv6 (AAAA)10/103 IPv6 address(es) detected.
OKName server redundancy20/203 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
ERRORDNSSEC chain0/15Both DS and DNSKEY are required.
OKCAA policy5/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/201 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/5552 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers31/358 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: website-content-cache-3.ps5.canonical.com
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
185.125.190.29
185.125.190.21
185.125.190.20
AAAA
2620:2d:4000:1::27
2620:2d:4000:1::26
2620:2d:4000:1::28
CNAME
MX
10 mx.ubuntu.com.
TXT
"v=spf1 include:_spf.canonical.com include:spf.forwardemail.net ~all"
"forward-email-site-verification=6IsURgl2t7"
"google-site-verification=8CcvY6fsgRbiFk2nyEaiA9rE-ykXOcWUPjJKlO6P4vk"
NS
ns3.canonical.com.
ns2.canonical.com.
ns1.canonical.com.
SOA
ns1.canonical.com. hostmaster.canonical.com. 2018065908 10800 3600 604800 3600
CAA
0 issue "digicert.com"
0 issuewild "letsencrypt.org"
0 iodef "mailto:is-admin@canonical.com"
0 issue "letsencrypt.org"
0 issuewild "digicert.com"
0 issue "letsencrypt.org; accounturi=https://acme-v01.api.letsencrypt.org/acme/reg/32541290"
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP