Yes — taiwan.net.tw has IPv6.

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

Measured 2026-10-30 18:14 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check taiwan.net.tw now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 taiwan.net.tw has an AAAA record and answers on it. ✓ 2403:9f00:100:587:211:79:207:131 answers · 443	yes
www over IPv6 www.taiwan.net.tw has an AAAA record and answers on it. ✓ 2403:9f00:100:587:211:79:207:131 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mail.taiwan.net.tw ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. admns2.hinet.net ✓admns1.hinet.net ✓	yes

First measured 2026-10-30; last confirmed 2026-10-30.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.

https://taiwan.net.tw/ via 2403:9f00:100:587:211:79:207:131 → 302https://eng.taiwan.net.tw/ via 2403:9f00:100:587:211:79:207:131 → 200

works

What's keeping taiwan.net.tw from an A

Mail servers without IPv6
mail.taiwan.net.tw has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

taiwan.net.tw Has IPv6

A (IPv4)	211.79.207.131
AAAA (IPv6)	2403:9f00:100:587:211:79:207:131

www.taiwan.net.tw Has IPv6

A (IPv4)	211.79.207.131
AAAA (IPv6)	2403:9f00:100:587:211:79:207:131

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

IPv6 measurement: taiwan.net.tw
Measured 2026-10-30 18:14:23 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    211.79.207.131
AAAA (IPv6): 2403:9f00:100:587:211:79:207:131
www AAAA:    2403:9f00:100:587:211:79:207:131

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: taiwan.net.tw has an AAAA record and answers on it.
    2403:9f00:100:587:211:79:207:131: answers (TCP 443)
- www over IPv6: www.taiwan.net.tw has an AAAA record and answers on it.
    2403:9f00:100:587:211:79:207:131: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
    https://taiwan.net.tw/ via 2403:9f00:100:587:211:79:207:131 -> HTTP 302, certificate: valid
    https://eng.taiwan.net.tw/ via 2403:9f00:100:587:211:79:207:131 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/0kfdUWusiL

Permanent link: aaaa.bot/r/0kfdUWusiL · How we measure

Checked 2026-10-30 18:14:23 UTC. Full DNS report: dns.pizza/domain/taiwan.net.tw · Age, certificate and blocklists: how.is/taiwan.net.tw · JSON: /api/v1/taiwan.net.tw