Yes — cityengineering.online has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 cityengineering.online has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:f2a6:f3d6:de39:6491:4a06 answers · 443✓ 2a02:4780:84:22cf:7fe5:4eae:5c21:1691 answers · 443	yes
www over IPv6 www.cityengineering.online has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:27ae:26ed:5df5:25be:70b9 answers · 443✓ 2a02:4780:84:275f:9ab6:1a54:25e:5b05 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mx2.hostinger.com ✓mx1.hostinger.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. athena.dns-parking.com ✓apollo.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://cityengineering.online/ via 2a02:4780:84:f2a6:f3d6:de39:6491:4a06 → 302https://cityengineering.online/login.php via 2a02:4780:84:f2a6:f3d6:de39:6491:4a06 → 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/cityengineering.online.svg)](https://aaaa.bot/cityengineering.online)

Check again

cityengineering.online Has IPv6

A (IPv4)	84.32.84.17 88.222.222.194
AAAA (IPv6)	2a02:4780:84:f2a6:f3d6:de39:6491:4a06 2a02:4780:84:22cf:7fe5:4eae:5c21:1691

www.cityengineering.online Has IPv6

Alias of	www.cityengineering.online.cdn.hstgr.net
A (IPv4)	195.35.60.211 212.1.212.253
AAAA (IPv6)	2a02:4780:84:27ae:26ed:5df5:25be:70b9 2a02:4780:84:275f:9ab6:1a54:25e:5b05

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: cityengineering.online
Measured 2026-11-04 00:02:03 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    84.32.84.17, 88.222.222.194
AAAA (IPv6): 2a02:4780:84:f2a6:f3d6:de39:6491:4a06, 2a02:4780:84:22cf:7fe5:4eae:5c21:1691
www AAAA:    2a02:4780:84:27ae:26ed:5df5:25be:70b9, 2a02:4780:84:275f:9ab6:1a54:25e:5b05

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: cityengineering.online has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:f2a6:f3d6:de39:6491:4a06: answers (TCP 443)
    2a02:4780:84:22cf:7fe5:4eae:5c21:1691: answers (TCP 443)
- www over IPv6: www.cityengineering.online has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:27ae:26ed:5df5:25be:70b9: answers (TCP 443)
    2a02:4780:84:275f:9ab6:1a54:25e:5b05: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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://cityengineering.online/ via 2a02:4780:84:f2a6:f3d6:de39:6491:4a06 -> HTTP 302, certificate: valid
    https://cityengineering.online/login.php via 2a02:4780:84:f2a6:f3d6:de39:6491:4a06 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/d0t8aq6wGq

Permanent link: aaaa.bot/r/d0t8aq6wGq · How we measure

Checked 2026-11-04 00:02:03 UTC. Full DNS report: dns.pizza/domain/cityengineering.online · Age, certificate and blocklists: how.is/cityengineering.online · JSON: /api/v1/cityengineering.online