DNS Report: substackcdn.com

Generated: 2026-08-09T13:19:56-05:00

56/100

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.
ERRORMX records0/200 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 certificate55/55156 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: server-108-157-150-10.mci50.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.
ERRORHTTP response0/40HTTP/2 403
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
108.157.150.10
108.157.150.7
108.157.150.99
108.157.150.13
AAAA
2600:9000:24f9:f000:4:b4b9:d3c0:93a1
2600:9000:24f9:9400:4:b4b9:d3c0:93a1
2600:9000:24f9:5600:4:b4b9:d3c0:93a1
2600:9000:24f9:8000:4:b4b9:d3c0:93a1
2600:9000:24f9:1a00:4:b4b9:d3c0:93a1
2600:9000:24f9:c00:4:b4b9:d3c0:93a1
2600:9000:24f9:d000:4:b4b9:d3c0:93a1
2600:9000:24f9:e00:4:b4b9:d3c0:93a1
CNAME
MX
TXT
"google-site-verification=tz2v--AUiNuSpVyU440dvghhnTS9kVnvhIWn69muzgs"
NS
ns-1936.awsdns-50.co.uk.
ns-98.awsdns-12.com.
ns-946.awsdns-54.net.
ns-1445.awsdns-52.org.
SOA
ns-98.awsdns-12.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP