cpspec.online publishes IPv6 but doesn't answer on it.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

F
IPv6 readiness
Publishes IPv6 but doesn't answer on it — worse than having none.
Website over IPv6
cpspec.online has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.
✗ 2a03:6f00:6:1::517:327a no answer
broken
www over IPv6
www.cpspec.online has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.
✗ 2a03:6f00:6:1::517:327a no answer
broken
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
mx1.timeweb.ru ✓mx2.timeweb.ru ✓
yes
Nameservers have IPv6
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns4.timeweb.org ✓ns3.timeweb.org ✓ns2.timeweb.ru ✓ns1.timeweb.ru ✓
yes
 Which outside scripts, fonts, payments or chat cpspec.online loads from have no IPv6.
 Load cpspec.online over IPv6 from up to six other places — a second opinion.

What's keeping cpspec.online from an A

  1. Fix or remove the AAAA record for cpspec.online
    Something published an IPv6 address but nothing answers on it, so IPv6 visitors wait for a timeout first. Either make the server listen on IPv6 (and allow ports 443/80 through its firewall), or delete the AAAA record until it does.
  2. Fix or remove the AAAA record for www.cpspec.online
    Something published an IPv6 address but nothing answers on it, so IPv6 visitors wait for a timeout first. Either make the server listen on IPv6 (and allow ports 443/80 through its firewall), or delete the AAAA record until it does.

Check again

cpspec.online  Has IPv6

A (IPv4)5.23.50.122
AAAA (IPv6)2a03:6f00:6:1::517:327a

www.cpspec.online  Has IPv6

A (IPv4)5.23.50.122
AAAA (IPv6)2a03:6f00:6:1::517:327a

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

 Permanent link: aaaa.bot/r/los4j9Sk21 · How we measure

Checked 2026-11-08 17:29:56 UTC. Full DNS report: dns.pizza/domain/cpspec.online · Age, certificate and blocklists: how.is/cpspec.online · JSON: /api/v1/cpspec.online