DNS Report: cern.ch

Generated: 2026-08-08T20:42:33-05:00

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.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/201 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55107 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: lbaas-73ae2b4e-5554-441e-b8e3-8d558b25f161.cern.ch
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
188.184.77.250
AAAA
2001:1458:d00:3c::100:2f9
CNAME
MX
10 cern-ch.mail.protection.outlook.com.
TXT
"v=spf1 include:spf.cern.ch ?all"
"anthropic-domain-verification-4kfdsh=uvjsOh2bjwteama1zHsw7FZtw"
"google-site-verification=aoFc91q4kA9Xp_-Z_AFY1gI0AmXpTXIMcGseZfvH0J8"
"cursor-domain-verification-8t0p9r=J6wFIABgbtZfHacKasG8HDZ1p"
"mistral-domain-verification=3a255465ec599b8016fb91a2f8563cc304e3b95d"
"openai-domain-verification=dv-R5PuLWpZKT8QhVzrlbLDHvBz"
"MS=ms44269116"
"autodesk-domain-verification=5Lt81tqLuEgD4wCC73YQ"
"sinch-domain-verification=1fa8887b-9312-4ca2-85f8-75f7c1ba81fd"
"goqTmP4CYqgXEPONka9g8FCGD4vpvjieG4RI5NLxYZsBh/y5p88K9ym3zIFcLVbaYQdJkdhfYcjADXGdGMdSCA=="
NS
scsnms.switch.ch.
ext-dns-2.cern.ch.
ext-dns-1.cern.ch.
SOA
ext-dns-1.cern.ch. external-dns.cern.ch. 2013773015 1200 300 2419200 900
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP