Yes — usesfu.xyz has IPv6.

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

This is a saved measurement from 2026-11-02 04:47 UTC. Check usesfu.xyz live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 usesfu.xyz has an AAAA record and answers on it. ✓ 2a09:8280:1::1d9:7ea1:0 answers · 443	yes
www over IPv6 www.usesfu.xyz has an AAAA record and answers on it. ✓ 2a09:8280:1::1d9:7ea1:0 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. ns1.vercel-dns.com ✓ns2.vercel-dns.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://usesfu.xyz/ via 2a09:8280:1::1d9:7ea1:0 → 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/usesfu.xyz.svg)](https://aaaa.bot/usesfu.xyz)

Check again

usesfu.xyz Has IPv6

A (IPv4)	66.241.125.32
AAAA (IPv6)	2a09:8280:1::1d9:7ea1:0

www.usesfu.xyz Has IPv6

A (IPv4)	66.241.125.32
AAAA (IPv6)	2a09:8280:1::1d9:7ea1:0

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: usesfu.xyz
Measured 2026-11-02 04:47:52 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    66.241.125.32
AAAA (IPv6): 2a09:8280:1::1d9:7ea1:0
www AAAA:    2a09:8280:1::1d9:7ea1:0

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: usesfu.xyz has an AAAA record and answers on it.
    2a09:8280:1::1d9:7ea1:0: answers (TCP 443)
- www over IPv6: www.usesfu.xyz has an AAAA record and answers on it.
    2a09:8280:1::1d9:7ea1:0: 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 200.
    https://usesfu.xyz/ via 2a09:8280:1::1d9:7ea1:0 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/audRbUVMBg

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

Checked 2026-11-02 04:47:52 UTC. Full DNS report: dns.pizza/domain/usesfu.xyz · JSON: /api/v1/usesfu.xyz