Yes — testsiegerprofi.org has IPv6.

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

Measured 2026-11-06 22:32 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check testsiegerprofi.org now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 testsiegerprofi.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::6815:9b8 answers · 443✓ 2606:4700:3033::ac43:82fe answers · 443	yes
www over IPv6 www.testsiegerprofi.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::ac43:82fe answers · 443✓ 2606:4700:3030::6815:9b8 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. carl.ns.cloudflare.com ✓ivy.ns.cloudflare.com ✓	yes

First measured 2026-11-06; last confirmed 2026-11-06.

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

https://testsiegerprofi.org/ via 2606:4700:3030::6815:9b8 → 301https://www.testsiegerprofi.org/ via 2606:4700:3033::ac43:82fe → 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/testsiegerprofi.org.svg)](https://aaaa.bot/testsiegerprofi.org)

Check again

testsiegerprofi.org Has IPv6

A (IPv4)	172.67.130.254 104.21.9.184
AAAA (IPv6)	2606:4700:3030::6815:9b8 2606:4700:3033::ac43:82fe

www.testsiegerprofi.org Has IPv6

A (IPv4)	104.21.9.184 172.67.130.254
AAAA (IPv6)	2606:4700:3033::ac43:82fe 2606:4700:3030::6815:9b8

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: testsiegerprofi.org
Measured 2026-11-06 22:32:42 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.130.254, 104.21.9.184
AAAA (IPv6): 2606:4700:3030::6815:9b8, 2606:4700:3033::ac43:82fe
www AAAA:    2606:4700:3033::ac43:82fe, 2606:4700:3030::6815:9b8

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: testsiegerprofi.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::6815:9b8: answers (TCP 443)
    2606:4700:3033::ac43:82fe: answers (TCP 443)
- www over IPv6: www.testsiegerprofi.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::ac43:82fe: answers (TCP 443)
    2606:4700:3030::6815:9b8: 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: 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://testsiegerprofi.org/ via 2606:4700:3030::6815:9b8 -> HTTP 301, certificate: valid
    https://www.testsiegerprofi.org/ via 2606:4700:3033::ac43:82fe -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/wfJHA9JL1I

Permanent link: aaaa.bot/r/wfJHA9JL1I · How we measure

Checked 2026-11-06 22:32:42 UTC. Full DNS report: dns.pizza/domain/testsiegerprofi.org · Age, certificate and blocklists: how.is/testsiegerprofi.org · JSON: /api/v1/testsiegerprofi.org