DNS Report: readthedocs.io

Generated: 2026-08-08T17:43:30-05:00

74/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/302 IPv4 address(es) detected.
OKIPv6 (AAAA)10/102 IPv6 address(es) detected.
OKName server redundancy20/202 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).
ERRORSPF0/25SPF policy not found.
ERRORDMARC0/25DMARC policy not found.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/5577 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers23/356 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
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
104.16.253.120
104.16.254.120
AAAA
2606:4700::6810:fd78
2606:4700::6810:fe78
CNAME
MX
5 alt1.aspmx.l.google.com.
10 aspmx3.googlemail.com.
10 aspmx2.googlemail.com.
1 aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
TXT
NS
ivan.ns.cloudflare.com.
tegan.ns.cloudflare.com.
SOA
ivan.ns.cloudflare.com. dns.cloudflare.com. 2410644841 10000 2400 604800 1800
CAA
0 issue "letsencrypt.org"
0 issuewild "amazonaws.com"
0 issue "ssl.com"
0 issue "comodoca.com"
0 issuewild "digicert.com; cansignhttpexchanges=yes"
0 issue "digicert.com; cansignhttpexchanges=yes"
0 issuewild "comodoca.com"
0 issuewild "letsencrypt.org"
0 issue " amazontrust.com"
0 issuewild "pki.goog; cansignhttpexchanges=yes"
0 issuewild "ssl.com"
0 issue "pki.goog; cansignhttpexchanges=yes"
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP