Yes — bufen.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
bufen.sbs has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::6815:3358 answers · 443✓ 2606:4700:3037::ac43:b1fa answers · 443
yes
www over IPv6
www.bufen.sbs has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3037::ac43:b1fa answers · 443✓ 2606:4700:3031::6815:3358 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.
bryce.ns.cloudflare.com ✓paige.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://bufen.sbs/ via 2606:4700:3031::6815:3358 → 302https://www.whatsapp.com/ via 2a03:2880:f381:120:face:b00c:0:167 → 200
works
 Which outside scripts, fonts, payments or chat bufen.sbs loads from have no IPv6.
 Load bufen.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/bufen.sbs.svg)](https://aaaa.bot/bufen.sbs)

Check again

bufen.sbs  Has IPv6

A (IPv4)104.21.51.88
172.67.177.250
AAAA (IPv6)2606:4700:3031::6815:3358
2606:4700:3037::ac43:b1fa

www.bufen.sbs  Has IPv6

A (IPv4)104.21.51.88
172.67.177.250
AAAA (IPv6)2606:4700:3037::ac43:b1fa
2606:4700:3031::6815:3358

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/rv7LA4xgXK · How we measure

Checked 2026-11-08 10:13:50 UTC. Full DNS report: dns.pizza/domain/bufen.sbs · Age, certificate and blocklists: how.is/bufen.sbs · JSON: /api/v1/bufen.sbs