DNS Report: nxtbook.com

Generated: 2026-08-10T00:45:56-05:00

62/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/302 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/206 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).
ERRORSPF0/25SPF policy not found.
OKDMARC25/25DMARC policy published.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55210 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: ec2-100-24-245-172.compute-1.amazonaws.com
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
ERRORHTTP response0/40HTTP/2 403
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
100.24.245.172
32.199.243.4
AAAA
CNAME
MX
10 aspmx.l.google.com.
30 aspmx3.googlemail.com.
20 alt1.aspmx.l.google.com.
20 alt2.aspmx.l.google.com.
30 aspmx2.googlemail.com.
TXT
"google-site-verification=p-JN12VDKYWv2mmmd0kaDlZqV7JA2aoi26GrmhgW3Qw"
"google-site-verification=FWZEZlmaaTxbYnb7fpnL9TLZ9tTi0Q8n1csZB_LnJ2w"
"google-site-verification=wv0J2fI_TETDHPSgGoSCCzDGXX19bu7jIURWxNrmZIA"
"google-site-verification=N4tIB6rjZ96RfVqNEsm1FeSS49_hA2YOxsy6yQFuncI"
NS
ns61.constellix.net.
ns41.constellix.net.
ns51.constellix.net.
ns31.constellix.com.
ns21.constellix.com.
ns11.constellix.com.
SOA
ns11.constellix.com. dns.constellix.com. 2015010219 43200 3600 1209600 180
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP