Yes — thinkhard.tech has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 thinkhard.tech has 2 IPv6 addresses and answers on every one we tested. ✓ 2a0b:1640:1:1:1:1:d7b:e8 answers · 443✓ 2a0b:1640:1:1:1002:1:1:1 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 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns4.dns.host ✓ns3.dns.host ✓ns1.dns.host ✓ns2.dns.host ✓	yes

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

https://thinkhard.tech/ via 2a0b:1640:1:1:1:1:d7b:e8 → 301https://thinkhard.si/ via 2a02:4780:84:401e:d928:29fe:46a0:916a → 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/thinkhard.tech.svg)](https://aaaa.bot/thinkhard.tech)

Check again

thinkhard.tech Has IPv6

A (IPv4)	185.206.180.177 185.206.180.164
AAAA (IPv6)	2a0b:1640:1:1:1:1:d7b:e8 2a0b:1640:1:1:1002:1:1:1

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: thinkhard.tech
Measured 2026-11-02 00:28:02 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    185.206.180.177, 185.206.180.164
AAAA (IPv6): 2a0b:1640:1:1:1:1:d7b:e8, 2a0b:1640:1:1:1002:1:1:1

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: thinkhard.tech has 2 IPv6 addresses and answers on every one we tested.
    2a0b:1640:1:1:1:1:d7b:e8: answers (TCP 443)
    2a0b:1640:1:1:1002:1:1:1: answers (TCP 443)
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.
- Nameservers have IPv6: 4 of 4 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://thinkhard.tech/ via 2a0b:1640:1:1:1:1:d7b:e8 -> HTTP 301, certificate: valid
    https://thinkhard.si/ via 2a02:4780:84:401e:d928:29fe:46a0:916a -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/xn3dTqXV2e

Permanent link: aaaa.bot/r/xn3dTqXV2e · How we measure

Checked 2026-11-02 00:28:02 UTC. Full DNS report: dns.pizza/domain/thinkhard.tech · JSON: /api/v1/thinkhard.tech