Yes — rxjxcd.com has IPv6.

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

This is a saved measurement from 2026-11-06 06:25 UTC. Check rxjxcd.com live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 rxjxcd.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::ac43:a67a answers · 443✓ 2606:4700:3031::6815:4b10 answers · 443	yes
www over IPv6 www.rxjxcd.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:4b10 answers · 443✓ 2606:4700:3033::ac43:a67a 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. bowen.ns.cloudflare.com ✓emma.ns.cloudflare.com ✓	yes

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

https://rxjxcd.com/ via 2606:4700:3033::ac43:a67a → 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/rxjxcd.com.svg)](https://aaaa.bot/rxjxcd.com)

Check again

rxjxcd.com Has IPv6

A (IPv4)	104.21.75.16 172.67.166.122
AAAA (IPv6)	2606:4700:3033::ac43:a67a 2606:4700:3031::6815:4b10

www.rxjxcd.com Has IPv6

A (IPv4)	172.67.166.122 104.21.75.16
AAAA (IPv6)	2606:4700:3031::6815:4b10 2606:4700:3033::ac43:a67a

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: rxjxcd.com
Measured 2026-11-06 06:25:21 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.75.16, 172.67.166.122
AAAA (IPv6): 2606:4700:3033::ac43:a67a, 2606:4700:3031::6815:4b10
www AAAA:    2606:4700:3031::6815:4b10, 2606:4700:3033::ac43:a67a

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: rxjxcd.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::ac43:a67a: answers (TCP 443)
    2606:4700:3031::6815:4b10: answers (TCP 443)
- www over IPv6: www.rxjxcd.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:4b10: answers (TCP 443)
    2606:4700:3033::ac43:a67a: 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 403.
    https://rxjxcd.com/ via 2606:4700:3033::ac43:a67a -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/E4oREzSagx

Permanent link: aaaa.bot/r/E4oREzSagx · How we measure

Checked 2026-11-06 06:25:21 UTC. Full DNS report: dns.pizza/domain/rxjxcd.com · Age, certificate and blocklists: how.is/rxjxcd.com · JSON: /api/v1/rxjxcd.com