DNS Report: gitbook.io

Generated: 2026-08-08T20:12:01-05:00

83/100

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.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/205 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 certificate55/5586 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers8/352 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
172.64.147.209
104.18.40.47
AAAA
2606:4700:4401::ac40:93d1
2a06:98c1:310d::6812:282f
CNAME
MX
20 alt1.aspmx.l.google.com.
30 aspmx2.googlemail.com.
10 aspmx.l.google.com.
20 alt2.aspmx.l.google.com.
30 aspmx3.googlemail.com.
TXT
"8lncom12tnn1so22eu2gvaoe9q"
"v=spf1 a mx include:_spf.google.com include:sendgrid.net include:stspg-customer.com -all"
"8277640"
"google-site-verification=9HmRew5KGY83Wzed-UhP71FdHHbV3qoUKP5h_Jenjeo"
"google-site-verification=mAI4k7A4RaCrAbrsgv7m8w6VPx0irEHUO3bHYEPPwdI"
"openai-domain-verification=dv-5coTbUFl8eIUWr3rQkpd9lw2"
"google-site-verification=jOO29_Act4pfhfArsLE_txCdET-NuQQyqp1aAG5-H8s"
NS
hugh.ns.cloudflare.com.
dahlia.ns.cloudflare.com.
SOA
dahlia.ns.cloudflare.com. dns.cloudflare.com. 2411413789 10000 2400 604800 1800
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP