Yes — billx.pro has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 billx.pro has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:9dce:49eb:7117:f324:f697 answers · 443✓ 2a02:4780:84:7e6e:7360:c129:cc7:412f answers · 443	yes
www over IPv6 www.billx.pro has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:21:1461:24ba:bd1d:d509:86bb answers · 443✓ 2a02:4780:22:6e75:aea1:5a3:9e3e:b202 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. orbit.dns-parking.com ✓horizon.dns-parking.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.

https://billx.pro/ via 2a02:4780:84:9dce:49eb:7117:f324:f697 → 302https://billx.pro/login via 2a02:4780:84:9dce:49eb:7117:f324:f697 → 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/billx.pro.svg)](https://aaaa.bot/billx.pro)

Check again

billx.pro Has IPv6

A (IPv4)	84.32.84.30 2.57.91.111
AAAA (IPv6)	2a02:4780:84:9dce:49eb:7117:f324:f697 2a02:4780:84:7e6e:7360:c129:cc7:412f

www.billx.pro Has IPv6

Alias of	www.billx.pro.cdn.hstgr.net
A (IPv4)	84.32.84.122 2.57.91.28
AAAA (IPv6)	2a02:4780:21:1461:24ba:bd1d:d509:86bb 2a02:4780:22:6e75:aea1:5a3:9e3e:b202

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: billx.pro
Measured 2026-11-08 04:39:26 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    84.32.84.30, 2.57.91.111
AAAA (IPv6): 2a02:4780:84:9dce:49eb:7117:f324:f697, 2a02:4780:84:7e6e:7360:c129:cc7:412f
www AAAA:    2a02:4780:21:1461:24ba:bd1d:d509:86bb, 2a02:4780:22:6e75:aea1:5a3:9e3e:b202

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: billx.pro has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:9dce:49eb:7117:f324:f697: answers (TCP 443)
    2a02:4780:84:7e6e:7360:c129:cc7:412f: answers (TCP 443)
- www over IPv6: www.billx.pro has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:21:1461:24ba:bd1d:d509:86bb: answers (TCP 443)
    2a02:4780:22:6e75:aea1:5a3:9e3e:b202: 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 after 1 redirect: HTTP 200.
    https://billx.pro/ via 2a02:4780:84:9dce:49eb:7117:f324:f697 -> HTTP 302, certificate: valid
    https://billx.pro/login via 2a02:4780:84:9dce:49eb:7117:f324:f697 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/BKe4-uBVjc

Permanent link: aaaa.bot/r/BKe4-uBVjc · How we measure

Checked 2026-11-08 04:39:26 UTC. Full DNS report: dns.pizza/domain/billx.pro · Age, certificate and blocklists: how.is/billx.pro · JSON: /api/v1/billx.pro