DNS Report: realpython.com

Generated: 2026-08-09T20:03:27-05:00

85/100

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.
OKDNSSEC chain15/15DS and DNSKEY detected.
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 headers31/358 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.
ERRORHTTP response0/40HTTP/2 403
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
172.66.152.40
104.20.21.64
AAAA
2606:4700:10::6814:1540
2606:4700:10::ac42:9828
CNAME
MX
5 alt1.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
1 aspmx.l.google.com.
10 alt3.aspmx.l.google.com.
TXT
"google-site-verification=A7KGy9dXNDDjfcJxzeheQMV3zXmEaGyhfXGD8gVnV0o"
"v=spf1 include:sendgrid.net include:_spf.google.com include:spf.mtasv.net -all"
"heroku-domain-verification=4wmxxfa6kei5mnhcv1uv9tupeqkktlelsdph/9h1zyw"
"ahrefs-site-verification_b23bde4d9aec7044956dcd71cf0d11f916b0e454decab322485d1711448974f4"
"google-site-verification=Ubborzk4tBqoxnQn8nPqAyMvR6MFiJEJABBL8_y63QQ"
"openai-domain-verification=dv-fH5y7meWHKLGgcZuenhzq9WI"
"facebook-domain-verification=mq46mq2is4d14vhplara08baid717h"
NS
joan.ns.cloudflare.com.
curt.ns.cloudflare.com.
SOA
curt.ns.cloudflare.com. dns.cloudflare.com. 2411533223 10000 2400 604800 1800
CAA
DS
2371 13 2 2D6011398CE9A0AA7AECDD588615F4919B54FDF5056FA1761EA70807 A40DB4EC
DNSKEY
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==
257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
RRSIG
NSEC
\000.realpython.com. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA
NSEC3
SRV
NAPTR
TLSA
SSHFP