Yes — ansec.app has IPv6.

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

This is a saved measurement from 2026-11-05 12:03 UTC. Check ansec.app live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 ansec.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:2a0b answers · 443✓ 2606:4700:3033::ac43:c61b answers · 443	yes
www over IPv6 www.ansec.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:2a0b answers · 443✓ 2606:4700:3033::ac43:c61b answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. route1.mx.cloudflare.net ✓route2.mx.cloudflare.net ✓route3.mx.cloudflare.net ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. rajeev.ns.cloudflare.com ✓samara.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.

https://ansec.app/ via 2606:4700:3031::6815:2a0b → 301https://apps.annealsecurity.com/ via 2606:4700:3032::6815:41b1 → 403

works

Nothing keeping you from an A

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

Check again

ansec.app Has IPv6

A (IPv4)	172.67.198.27 104.21.42.11
AAAA (IPv6)	2606:4700:3031::6815:2a0b 2606:4700:3033::ac43:c61b

www.ansec.app Has IPv6

A (IPv4)	104.21.42.11 172.67.198.27
AAAA (IPv6)	2606:4700:3031::6815:2a0b 2606:4700:3033::ac43:c61b

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: ansec.app
Measured 2026-11-05 12:03:36 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.198.27, 104.21.42.11
AAAA (IPv6): 2606:4700:3031::6815:2a0b, 2606:4700:3033::ac43:c61b
www AAAA:    2606:4700:3031::6815:2a0b, 2606:4700:3033::ac43:c61b

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: ansec.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:2a0b: answers (TCP 443)
    2606:4700:3033::ac43:c61b: answers (TCP 443)
- www over IPv6: www.ansec.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:2a0b: answers (TCP 443)
    2606:4700:3033::ac43:c61b: 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 after 1 redirect: HTTP 403.
    https://ansec.app/ via 2606:4700:3031::6815:2a0b -> HTTP 301, certificate: valid
    https://apps.annealsecurity.com/ via 2606:4700:3032::6815:41b1 -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/maiTk5BKN9

Permanent link: aaaa.bot/r/maiTk5BKN9 · How we measure

Checked 2026-11-05 12:03:36 UTC. Full DNS report: dns.pizza/domain/ansec.app · Age, certificate and blocklists: how.is/ansec.app · JSON: /api/v1/ansec.app