RFC Editor
rfc-editor.org
The official home of RFCs. RFCs outline computer networking and Internet foundations, including Internet Standards and historical or informative content.
Get a complete DNS, email, SSL, HTTP and network analysis in seconds.
rfc-editor.org
The official home of RFCs. RFCs outline computer networking and Internet foundations, including Internet Standards and historical or informative content.
2 IPv4 address(es) detected.
2 IPv6 address(es) detected.
2 NS record(s); 2 or more required.
Authoritative zone record.
DS and DNSKEY detected.
Certificate authority restriction.
Agreement between public resolvers.
1 MX record(s).
SPF policy published.
DMARC policy not found.
No tested DKIM selector responded.
Mail transport policy.
TLS reporting policy.
46 day(s) remaining.
Full points require at least 30 days remaining.
0 of 9 evaluated headers detected.
PTR not detected.
Two or more IPv4 addresses receive full points.
AAAA availability.
At least one address family must resolve.
HTTP/2 200
Final URL uses HTTPS.
104.18.21.81 104.18.20.81
2606:4700::6812:1451 2606:4700::6812:1551
Not configured
0 mail2.ietf.org.
"google-site-verification=S7F2LDRmYAIwFs4JZtnDdmZH23mNreKn8qKn2qkBcHs" "v=spf1 ip4:166.84.6.31 ip4:166.84.7.238 ip6:2602:f977:800:f7f6::/64 ip4:166.84.7.34 ip6:2602:f977:800::e276:63ff:fe66:3400 include:_spf.google.com include:spf.hostedrt.com ~all"
jill.ns.cloudflare.com. ken.ns.cloudflare.com.
jill.ns.cloudflare.com. dns.cloudflare.com. 2411102235 10000 2400 604800 1800
Not configured
2371 13 2 680122994AAA85C1F0DB78BDF10AAC37BFA29DDE0539F0987F170AEB EBD1DDBC
257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ== 256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==
Not configured
\000.rfc-editor.org. 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
Not configured
Not configured
Not configured
Not configured
Not configured
v=spf1 ip4:166.84.6.31 ip4:166.84.7.238 ip6:2602:f977:800:f7f6::/64 ip4:166.84.7.34 ip6:2602:f977:800::e276:63ff:fe66:3400 include:_spf.google.com include:spf.hostedrt.com ~all
Not configured
Not configured
5 public resolvers queried.
8.8.8.81.1.1.19.9.9.9208.67.222.22294.140.14.14Port 25: Closed/unreachable - 0.9 ms - Port 465: Closed/unreachable - 4018.4 ms - Port 587: Closed/unreachable - 23.7 ms - 220 mail2.ietf.org ESMTP