Yes — 5566699.sbs has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
5566699.sbs has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3034::ac43:8894 answers · 443✓ 2606:4700:3032::6815:5105 answers · 443
yes
www over IPv6
www.5566699.sbs has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3034::ac43:8894 answers · 443✓ 2606:4700:3032::6815:5105 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.
celine.ns.cloudflare.com ✓lennox.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://5566699.sbs/ via 2606:4700:3034::ac43:8894 → 200
works
 Which outside scripts, fonts, payments or chat 5566699.sbs loads from have no IPv6.
 Load 5566699.sbs 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/5566699.sbs.svg)](https://aaaa.bot/5566699.sbs)

Check again

5566699.sbs  Has IPv6

A (IPv4)172.67.136.148
104.21.81.5
AAAA (IPv6)2606:4700:3034::ac43:8894
2606:4700:3032::6815:5105

www.5566699.sbs  Has IPv6

A (IPv4)172.67.136.148
104.21.81.5
AAAA (IPv6)2606:4700:3034::ac43:8894
2606:4700:3032::6815:5105

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/-y1bC9fPq0 · How we measure

Checked 2026-11-11 14:55:23 UTC. Full DNS report: dns.pizza/domain/5566699.sbs · Age, certificate and blocklists: how.is/5566699.sbs · JSON: /api/v1/5566699.sbs