Yes — anlegen.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 anlegen.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:1b87 answers · 443✓ 2606:4700:3030::ac43:8ebb 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. gabe.ns.cloudflare.com ✓liv.ns.cloudflare.com ✓	yes

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

https://anlegen.app/ via 2606:4700:3032::6815:1b87 → 302https://cststd.cloudflareaccess.com/cdn-cgi/access/login/anlegen.app?kid=e82c936c027c762ab350e33a19718a38ad823cadf4904adbe597e300c47a5ce2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjIyMTUzZTg1NGQyOTZmY2FkYmZiOGI5NTM3N2NhYzJhNTU2MGZhMmM0NjA5N2FhMzkxNzM1ZTg2ZTE1NDZjMjUifQ.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.XDBF7Scs5v-GXf5SUQYYSDgLqesi84IPOO5VBDoup6DE3IfwHug7Lkb8QvXpGzjEoMLrocLuT1P1bf5sTM890r6lycU5MR-9pXdHycQm-PRDYSQ533pFEoxru-AmKl5mzXvgY8Z1qq7kEa-gXjt-EN9TH-PwnViRm7U85iipQemShAGzf9sW_2Q_EzcZaU5KuSsMB81MYJnBed_kLNXtnndooG4Z4lfu2dRJ4uQE5OMVEZazMVKJtAs2J6ulb6r-32jCgJZfT04jN_hS0dmkXCy7uZx-cxCxum5tmbEP4IwH672bBjqEAJws0mu1qmikkyoZIfLGXLyBW55hqrgrFA&redirect_url=%2F via 2606:4700:300a::6813:c21d → 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/anlegen.app.svg)](https://aaaa.bot/anlegen.app)

Check again

anlegen.app Has IPv6

A (IPv4)	104.21.27.135 172.67.142.187
AAAA (IPv6)	2606:4700:3032::6815:1b87 2606:4700:3030::ac43:8ebb

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: anlegen.app
Measured 2026-11-05 17:44:55 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.27.135, 172.67.142.187
AAAA (IPv6): 2606:4700:3032::6815:1b87, 2606:4700:3030::ac43:8ebb

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: anlegen.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::6815:1b87: answers (TCP 443)
    2606:4700:3030::ac43:8ebb: 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://anlegen.app/ via 2606:4700:3032::6815:1b87 -> HTTP 302, certificate: valid
    https://cststd.cloudflareaccess.com/cdn-cgi/access/login/anlegen.app?kid=e82c936c027c762ab350e33a19718a38ad823cadf4904adbe597e300c47a5ce2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjIyMTUzZTg1NGQyOTZmY2FkYmZiOGI5NTM3N2NhYzJhNTU2MGZhMmM0NjA5N2FhMzkxNzM1ZTg2ZTE1NDZjMjUifQ.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.XDBF7Scs5v-GXf5SUQYYSDgLqesi84IPOO5VBDoup6DE3IfwHug7Lkb8QvXpGzjEoMLrocLuT1P1bf5sTM890r6lycU5MR-9pXdHycQm-PRDYSQ533pFEoxru-AmKl5mzXvgY8Z1qq7kEa-gXjt-EN9TH-PwnViRm7U85iipQemShAGzf9sW_2Q_EzcZaU5KuSsMB81MYJnBed_kLNXtnndooG4Z4lfu2dRJ4uQE5OMVEZazMVKJtAs2J6ulb6r-32jCgJZfT04jN_hS0dmkXCy7uZx-cxCxum5tmbEP4IwH672bBjqEAJws0mu1qmikkyoZIfLGXLyBW55hqrgrFA&redirect_url=%2F via 2606:4700:300a::6813:c21d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/PP1pePueAM

Permanent link: aaaa.bot/r/PP1pePueAM · How we measure

Checked 2026-11-05 17:44:55 UTC. Full DNS report: dns.pizza/domain/anlegen.app · Age, certificate and blocklists: how.is/anlegen.app · JSON: /api/v1/anlegen.app