DNS Report: fourmilab.ch

Generated: 2026-08-09T08:16:07-05:00

81/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
OKIPv6 (AAAA)10/101 IPv6 address(es) detected.
OKName server redundancy20/204 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 records20/205 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 certificate55/5581 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers4/351 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: www.fourmilab.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/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
52.28.236.0
AAAA
2a05:d014:d43:3101:94aa:a276:e035:6a2a
CNAME
MX
5 alt2.aspmx.l.google.com.
1 aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
10 alt3.aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
TXT
"v=spf1 include:_spf.google.com ip4:193.8.230.0/24 ip4:52.28.236.0 ip4:3.123.190.28 ~all"
NS
ns-1903.awsdns-45.co.uk.
ns-614.awsdns-12.net.
ns-209.awsdns-26.com.
ns-1463.awsdns-54.org.
SOA
ns-1903.awsdns-45.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA
0 issue "letsencrypt.org"
DS
DNSKEY
RRSIG
NSEC 13 2 900 20260830004600 20260805093210 48631 ch. 12TC7b0AWV+3yirdw+pJT/XVR5rfZn0tqJPQ+n5426fltIIYYh5xA2kb tqs08tgo+JD914yKPgQKhyktuQqWCg==
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP