visa.cn 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
visa.cn has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.
✗ 2408:874f:8000:20:3d34:5f8d:7e6:fffe no answer
broken
www over IPv6
www.visa.cn has an AAAA record and answers on it.
✓ 2408:8756:4cff:d002:3cde:b6ec:5539:fffe answers · 443
yes
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.		yes
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns210.dns.cf-ns.com ✓ns88.dns.cf-ns.net ✓
yes
 Load visa.cn over IPv6 from up to six other places — a second opinion.

What's keeping visa.cn from an A

  1. Fix or remove the AAAA record for visa.cn
    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

visa.cn  Has IPv6

A (IPv4)27.128.219.121
AAAA (IPv6)2408:874f:8000:20:3d34:5f8d:7e6:fffe

www.visa.cn  Has IPv6

A (IPv4)60.217.234.148
AAAA (IPv6)2408:8756:4cff:d002:3cde:b6ec:5539:fffe

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/MSdhDabosL · How we measure

Checked 2026-11-02 04:46:39 UTC. Full DNS report: dns.pizza/domain/visa.cn · JSON: /api/v1/visa.cn