DNS Report: gnu.org

Generated: 2026-08-08T17:13:35-05:00

83/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
OKIPv6 (AAAA)10/101 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 certificate55/5559 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers12/353 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: 116.0-24.188.51.209.in-addr.arpa
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/1.1 200 OK
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
209.51.188.116
AAAA
2001:470:142:5::116
CNAME
MX
10 eggs.gnu.org.
TXT
"v=spf1 ip4:209.51.188.0/24 ip6:2001:470:142::/48 ip4:18.4.89.21 ip4:15.204.209.91 ip6:2604:2dc0:101:200::1d07 -all"
NS
ns4.gnu.org.
ns2.gnu.org.
ns1.gnu.org.
SOA
ns1.gnu.org. hostmaster.gnu.org. 2026071501 3600 120 1209600 3600
CAA
0 issue "letsencrypt.org"
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP
1 1 A2B0FA94793B921FC7A835A313CE8557F8D989E1