Yes — colab4betterdev.org has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 colab4betterdev.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:7::a29f:872a answers · 443✓ 2606:4700:7::a29f:862a answers · 443	yes
www over IPv6 www.colab4betterdev.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:7::a29f:872a answers · 443✓ 2606:4700:7::a29f:862a answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. smtp.google.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ingrid.ns.cloudflare.com ✓troy.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://colab4betterdev.org/ via 2606:4700:7::a29f:872a → 302https://colab4betterdev.org/wp-login.php?redirect_to=https%3A%2F%2Fcolab4betterdev.org%2F via 2606:4700:7::a29f:872a → 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/colab4betterdev.org.svg)](https://aaaa.bot/colab4betterdev.org)

Check again

colab4betterdev.org Has IPv6

A (IPv4)	162.159.134.42 162.159.135.42
AAAA (IPv6)	2606:4700:7::a29f:872a 2606:4700:7::a29f:862a

www.colab4betterdev.org Has IPv6

Alias of	colabforbetterdevelopment.hosting.kinsta.cloud
A (IPv4)	162.159.135.42 162.159.134.42
AAAA (IPv6)	2606:4700:7::a29f:872a 2606:4700:7::a29f:862a

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: colab4betterdev.org
Measured 2026-11-13 03:51:44 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    162.159.134.42, 162.159.135.42
AAAA (IPv6): 2606:4700:7::a29f:872a, 2606:4700:7::a29f:862a
www AAAA:    2606:4700:7::a29f:872a, 2606:4700:7::a29f:862a

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: colab4betterdev.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:7::a29f:872a: answers (TCP 443)
    2606:4700:7::a29f:862a: answers (TCP 443)
- www over IPv6: www.colab4betterdev.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:7::a29f:872a: answers (TCP 443)
    2606:4700:7::a29f:862a: 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 200.
    https://colab4betterdev.org/ via 2606:4700:7::a29f:872a -> HTTP 302, certificate: valid
    https://colab4betterdev.org/wp-login.php?redirect_to=https%3A%2F%2Fcolab4betterdev.org%2F via 2606:4700:7::a29f:872a -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/cOi_jXvu2D

Permanent link: aaaa.bot/r/cOi_jXvu2D · How we measure

Checked 2026-11-13 03:51:44 UTC. Full DNS report: dns.pizza/domain/colab4betterdev.org · Age, certificate and blocklists: how.is/colab4betterdev.org · JSON: /api/v1/colab4betterdev.org