Yes — x402fi.dev has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
x402fi.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3037::ac43:8e74 answers · 443✓ 2606:4700:3032::6815:5f03 answers · 443
yes
www over IPv6
www.x402fi.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3032::6815:5f03 answers · 443✓ 2606:4700:3037::ac43:8e74 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.
matt.ns.cloudflare.com ✓norah.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://x402fi.dev/ via 2606:4700:3037::ac43:8e74 → 200
works
 Which outside scripts, fonts, payments or chat x402fi.dev loads from have no IPv6.
 Load x402fi.dev over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. Nothing to fix
    Show it off: add the badge to your README.
    [![IPv6](https://aaaa.bot/badge/x402fi.dev.svg)](https://aaaa.bot/x402fi.dev)

Check again

x402fi.dev  Has IPv6

A (IPv4)172.67.142.116
104.21.95.3
AAAA (IPv6)2606:4700:3037::ac43:8e74
2606:4700:3032::6815:5f03

www.x402fi.dev  Has IPv6

A (IPv4)172.67.142.116
104.21.95.3
AAAA (IPv6)2606:4700:3032::6815:5f03
2606:4700:3037::ac43:8e74

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

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

Checked 2026-11-12 15:53:46 UTC. Full DNS report: dns.pizza/domain/x402fi.dev · Age, certificate and blocklists: how.is/x402fi.dev · JSON: /api/v1/x402fi.dev