DNS Report: leanpub.com

Generated: 2026-08-09T17:59:19-05:00

88/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/304 IPv4 address(es) detected.
OKIPv6 (AAAA)10/108 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.
ERRORCAA policy0/5Certificate authority restriction.
ERRORDNS propagation0/10Agreement 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 certificate55/55162 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers23/356 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: server-3-170-51-66.cmh68.r.cloudfront.net
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
3.170.51.66
3.170.51.92
3.170.51.93
3.170.51.51
AAAA
2600:9000:2798:f200:6:744:8980:93a1
2600:9000:2798:8e00:6:744:8980:93a1
2600:9000:2798:9000:6:744:8980:93a1
2600:9000:2798:2600:6:744:8980:93a1
2600:9000:2798:fc00:6:744:8980:93a1
2600:9000:2798:a200:6:744:8980:93a1
2600:9000:2798:f600:6:744:8980:93a1
2600:9000:2798:f000:6:744:8980:93a1
CNAME
MX
0 aspmx.l.google.com.
TXT
"google-site-verification=zoRXbAIm861EKd5VTW9pSjE9SmF0G12EWQit--QX-RI"
"v=spf1 a mx include:spf.mtasv.net include:spf.mail.intercom.io include:servers.mcsv.net include:_spf.google.com -all"
NS
ns-576.awsdns-08.net.
ns-1693.awsdns-19.co.uk.
ns-389.awsdns-48.com.
ns-1390.awsdns-45.org.
SOA
ns-576.awsdns-08.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP