Yes — simplesys.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
simplesys.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2a02:4780:84:4b6c:1ada:4b63:ea92:85e8 answers · 443✓ 2a02:4780:84:8f50:68bd:461c:5f3c:f53b answers · 443
yes
www over IPv6
www.simplesys.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2a02:4780:21:e522:f9ab:df94:dd7e:dc04 answers · 443✓ 2a02:4780:1d:4d2c:42f0:3a0:9649:7241 answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
mx1.hostinger.com ✓mx2.hostinger.com ✓
yes
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
aster.dns-parking.com ✓helios.dns-parking.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://simplesys.dev/ via 2a02:4780:84:4b6c:1ada:4b63:ea92:85e8 → 200
works
 Load simplesys.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/simplesys.dev.svg)](https://aaaa.bot/simplesys.dev)

Check again

simplesys.dev  Has IPv6

A (IPv4)88.222.222.21
2.57.91.30
AAAA (IPv6)2a02:4780:84:4b6c:1ada:4b63:ea92:85e8
2a02:4780:84:8f50:68bd:461c:5f3c:f53b

www.simplesys.dev  Has IPv6

Alias ofwww.simplesys.dev.cdn.hstgr.net
A (IPv4)191.101.104.183
212.1.212.64
AAAA (IPv6)2a02:4780:21:e522:f9ab:df94:dd7e:dc04
2a02:4780:1d:4d2c:42f0:3a0:9649:7241

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/fii_aYUA6w · How we measure

Checked 2026-11-03 18:42:51 UTC. Full DNS report: dns.pizza/domain/simplesys.dev · Age, certificate and blocklists: how.is/simplesys.dev · JSON: /api/v1/simplesys.dev