Yes — thinkgo.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 thinkgo.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:96cd:15d:ad27:18f3:357d answers · 443✓ 2a02:4780:84:374b:4399:85d2:e72:fdcf answers · 443	yes
www over IPv6 www.thinkgo.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:1bf9:2981:fdfb:8d08:c584 answers · 443✓ 2a02:4780:84:bb4c:f51b:36cd:a2fb:e172 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mx1.hostinger.com ✓mx2.hostinger.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. orbit.dns-parking.com ✓horizon.dns-parking.com ✓	yes

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

https://thinkgo.app/ via 2a02:4780:84:96cd:15d:ad27:18f3:357d → 200

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/thinkgo.app.svg)](https://aaaa.bot/thinkgo.app)

Check again

thinkgo.app Has IPv6

A (IPv4)	2.57.91.252 84.32.84.80
AAAA (IPv6)	2a02:4780:84:96cd:15d:ad27:18f3:357d 2a02:4780:84:374b:4399:85d2:e72:fdcf

www.thinkgo.app Has IPv6

Alias of	www.thinkgo.app.cdn.hstgr.net
A (IPv4)	2.57.91.98 84.32.84.92
AAAA (IPv6)	2a02:4780:84:1bf9:2981:fdfb:8d08:c584 2a02:4780:84:bb4c:f51b:36cd:a2fb:e172

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: thinkgo.app
Measured 2026-11-09 00:16:33 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    2.57.91.252, 84.32.84.80
AAAA (IPv6): 2a02:4780:84:96cd:15d:ad27:18f3:357d, 2a02:4780:84:374b:4399:85d2:e72:fdcf
www AAAA:    2a02:4780:84:1bf9:2981:fdfb:8d08:c584, 2a02:4780:84:bb4c:f51b:36cd:a2fb:e172

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: thinkgo.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:96cd:15d:ad27:18f3:357d: answers (TCP 443)
    2a02:4780:84:374b:4399:85d2:e72:fdcf: answers (TCP 443)
- www over IPv6: www.thinkgo.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:1bf9:2981:fdfb:8d08:c584: answers (TCP 443)
    2a02:4780:84:bb4c:f51b:36cd:a2fb:e172: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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: HTTP 200.
    https://thinkgo.app/ via 2a02:4780:84:96cd:15d:ad27:18f3:357d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/H5cwgKrZD6

Permanent link: aaaa.bot/r/H5cwgKrZD6 · How we measure

Checked 2026-11-09 00:16:33 UTC. Full DNS report: dns.pizza/domain/thinkgo.app · Age, certificate and blocklists: how.is/thinkgo.app · JSON: /api/v1/thinkgo.app