Yes — identityhound.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 identityhound.app has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2600:9000:27d1:e600:0:40f6:df00:93a1 answers · 443✓ 2600:9000:27d1:8e00:0:40f6:df00:93a1 answers · 443✓ 2600:9000:27d1:c400:0:40f6:df00:93a1 answers · 443✓ 2600:9000:27d1:1600:0:40f6:df00:93a1 answers · 443– 2600:9000:27d1:be00:0:40f6:df00:93a1 not tested– 2600:9000:27d1:d800:0:40f6:df00:93a1 not tested– 2600:9000:27d1:9600:0:40f6:df00:93a1 not tested– 2600:9000:27d1:ec00:0:40f6:df00:93a1 not tested	yes
www over IPv6 www.identityhound.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:16b5 answers · 443✓ 2606:4700:3032::ac43:ce5f 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. sam.ns.cloudflare.com ✓susan.ns.cloudflare.com ✓	yes

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

https://identityhound.app/ via 2600:9000:27d1:e600:0:40f6:df00:93a1 → 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/identityhound.app.svg)](https://aaaa.bot/identityhound.app)

Check again

identityhound.app Has IPv6

A (IPv4)	3.167.112.78 3.167.112.74 3.167.112.91 3.167.112.22
AAAA (IPv6)	2600:9000:27d1:e600:0:40f6:df00:93a1 2600:9000:27d1:8e00:0:40f6:df00:93a1 2600:9000:27d1:c400:0:40f6:df00:93a1 2600:9000:27d1:1600:0:40f6:df00:93a1 2600:9000:27d1:be00:0:40f6:df00:93a1 2600:9000:27d1:d800:0:40f6:df00:93a1 2600:9000:27d1:9600:0:40f6:df00:93a1 2600:9000:27d1:ec00:0:40f6:df00:93a1

www.identityhound.app Has IPv6

A (IPv4)	104.21.22.181 172.67.206.95
AAAA (IPv6)	2606:4700:3036::6815:16b5 2606:4700:3032::ac43:ce5f

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: identityhound.app
Measured 2026-11-05 04:52:36 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    3.167.112.78, 3.167.112.74, 3.167.112.91, 3.167.112.22
AAAA (IPv6): 2600:9000:27d1:e600:0:40f6:df00:93a1, 2600:9000:27d1:8e00:0:40f6:df00:93a1, 2600:9000:27d1:c400:0:40f6:df00:93a1, 2600:9000:27d1:1600:0:40f6:df00:93a1, 2600:9000:27d1:be00:0:40f6:df00:93a1, 2600:9000:27d1:d800:0:40f6:df00:93a1, 2600:9000:27d1:9600:0:40f6:df00:93a1, 2600:9000:27d1:ec00:0:40f6:df00:93a1
www AAAA:    2606:4700:3036::6815:16b5, 2606:4700:3032::ac43:ce5f

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: identityhound.app has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2600:9000:27d1:e600:0:40f6:df00:93a1: answers (TCP 443)
    2600:9000:27d1:8e00:0:40f6:df00:93a1: answers (TCP 443)
    2600:9000:27d1:c400:0:40f6:df00:93a1: answers (TCP 443)
    2600:9000:27d1:1600:0:40f6:df00:93a1: answers (TCP 443)
    2600:9000:27d1:be00:0:40f6:df00:93a1: not tested
    2600:9000:27d1:d800:0:40f6:df00:93a1: not tested
    2600:9000:27d1:9600:0:40f6:df00:93a1: not tested
    2600:9000:27d1:ec00:0:40f6:df00:93a1: not tested
- www over IPv6: www.identityhound.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::6815:16b5: answers (TCP 443)
    2606:4700:3032::ac43:ce5f: 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: HTTP 200.
    https://identityhound.app/ via 2600:9000:27d1:e600:0:40f6:df00:93a1 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/WyCPT5C-c_

Permanent link: aaaa.bot/r/WyCPT5C-c_ · How we measure

Checked 2026-11-05 04:52:36 UTC. Full DNS report: dns.pizza/domain/identityhound.app · Age, certificate and blocklists: how.is/identityhound.app · JSON: /api/v1/identityhound.app