Yes — swanio.cloud has IPv6.

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

This is a saved measurement from 2026-11-10 08:51 UTC. Check swanio.cloud live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 swanio.cloud has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::ac43:968d answers · 443✓ 2606:4700:3037::6815:1e2d answers · 443	yes
www over IPv6 www.swanio.cloud has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:1e2d answers · 443✓ 2606:4700:3034::ac43:968d 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. bonnie.ns.cloudflare.com ✓keenan.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.

https://swanio.cloud/ via 2606:4700:3034::ac43:968d → 403

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/swanio.cloud.svg)](https://aaaa.bot/swanio.cloud)

Check again

swanio.cloud Has IPv6

A (IPv4)	104.21.30.45 172.67.150.141
AAAA (IPv6)	2606:4700:3034::ac43:968d 2606:4700:3037::6815:1e2d

www.swanio.cloud Has IPv6

A (IPv4)	172.67.150.141 104.21.30.45
AAAA (IPv6)	2606:4700:3037::6815:1e2d 2606:4700:3034::ac43:968d

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: swanio.cloud
Measured 2026-11-10 08:51:51 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.30.45, 172.67.150.141
AAAA (IPv6): 2606:4700:3034::ac43:968d, 2606:4700:3037::6815:1e2d
www AAAA:    2606:4700:3037::6815:1e2d, 2606:4700:3034::ac43:968d

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: swanio.cloud has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::ac43:968d: answers (TCP 443)
    2606:4700:3037::6815:1e2d: answers (TCP 443)
- www over IPv6: www.swanio.cloud has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:1e2d: answers (TCP 443)
    2606:4700:3034::ac43:968d: 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 403.
    https://swanio.cloud/ via 2606:4700:3034::ac43:968d -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/FQ1-eMNBsQ

Permanent link: aaaa.bot/r/FQ1-eMNBsQ · How we measure

Checked 2026-11-10 08:51:51 UTC. Full DNS report: dns.pizza/domain/swanio.cloud · Age, certificate and blocklists: how.is/swanio.cloud · JSON: /api/v1/swanio.cloud