Yes — cloudns.net has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 cloudns.net has 4 IPv6 addresses and answers on every one we tested. ✓ 2a01:4f8:10a:448f::140 answers · 443✓ 2a01:4f8:212:146::126 answers · 443✓ 2a01:4f8:2200:225f::46 answers · 443✓ 2a01:4f8:192:8285::12 answers · 443	yes
www over IPv6 www.cloudns.net has 4 IPv6 addresses and answers on every one we tested. ✓ 2a01:4f8:2200:225f::46 answers · 443✓ 2a01:4f8:10a:448f::140 answers · 443✓ 2a01:4f8:192:8285::12 answers · 443✓ 2a01:4f8:212:146::126 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. alt4.aspmx.l.google.com ✓alt1.aspmx.l.google.com ✓alt3.aspmx.l.google.com ✓aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓	yes
Nameservers have IPv6 6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. dns2.cloudns.net ✓pns4.cloudns.net ✓pns1.cloudns.net ✓pns64.cloudns.uk ✓ns2.cloudns.net ✓dns7.cloudns.net ✓	yes

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

https://cloudns.net/ via 2a01:4f8:10a:448f::140 → 301https://www.cloudns.net/ via 2a01:4f8:2200:225f::46 → 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/cloudns.net.svg)](https://aaaa.bot/cloudns.net)

Check again

cloudns.net Has IPv6

A (IPv4)	136.243.33.126 148.251.246.12 88.99.219.140 167.235.118.46
AAAA (IPv6)	2a01:4f8:10a:448f::140 2a01:4f8:212:146::126 2a01:4f8:2200:225f::46 2a01:4f8:192:8285::12

www.cloudns.net Has IPv6

A (IPv4)	88.99.219.140 148.251.246.12 167.235.118.46 136.243.33.126
AAAA (IPv6)	2a01:4f8:2200:225f::46 2a01:4f8:10a:448f::140 2a01:4f8:192:8285::12 2a01:4f8:212:146::126

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: cloudns.net
Measured 2026-10-31 00:04:31 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    136.243.33.126, 148.251.246.12, 88.99.219.140, 167.235.118.46
AAAA (IPv6): 2a01:4f8:10a:448f::140, 2a01:4f8:212:146::126, 2a01:4f8:2200:225f::46, 2a01:4f8:192:8285::12
www AAAA:    2a01:4f8:2200:225f::46, 2a01:4f8:10a:448f::140, 2a01:4f8:192:8285::12, 2a01:4f8:212:146::126

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: cloudns.net has 4 IPv6 addresses and answers on every one we tested.
    2a01:4f8:10a:448f::140: answers (TCP 443)
    2a01:4f8:212:146::126: answers (TCP 443)
    2a01:4f8:2200:225f::46: answers (TCP 443)
    2a01:4f8:192:8285::12: answers (TCP 443)
- www over IPv6: www.cloudns.net has 4 IPv6 addresses and answers on every one we tested.
    2a01:4f8:2200:225f::46: answers (TCP 443)
    2a01:4f8:10a:448f::140: answers (TCP 443)
    2a01:4f8:192:8285::12: answers (TCP 443)
    2a01:4f8:212:146::126: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 6 of 6 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://cloudns.net/ via 2a01:4f8:10a:448f::140 -> HTTP 301, certificate: valid
    https://www.cloudns.net/ via 2a01:4f8:2200:225f::46 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/qBvO-S2s7I

Permanent link: aaaa.bot/r/qBvO-S2s7I · How we measure

Checked 2026-10-31 00:04:31 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/cloudns.net · JSON: /api/v1/cloudns.net