Yes — openservice.icu has IPv6.

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

Measured 2026-11-03 03:10 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check openservice.icu now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 openservice.icu has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:440d answers · 443✓ 2606:4700:3036::ac43:b89f answers · 443	yes
www over IPv6 www.openservice.icu has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:440d answers · 443✓ 2606:4700:3036::ac43:b89f 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. elisa.ns.cloudflare.com ✓keenan.ns.cloudflare.com ✓	yes

First measured 2026-11-03; last confirmed 2026-11-03.

HTTPS over IPv6 · not part of the grade yet
openservice.icu didn't complete an HTTPS request over IPv6 (timed out).

https://openservice.icu/ via 2606:4700:3034::6815:440d · timed out

Nothing keeping you from an A

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

Check again

openservice.icu Has IPv6

A (IPv4)	104.21.68.13 172.67.184.159
AAAA (IPv6)	2606:4700:3034::6815:440d 2606:4700:3036::ac43:b89f

www.openservice.icu Has IPv6

A (IPv4)	104.21.68.13 172.67.184.159
AAAA (IPv6)	2606:4700:3034::6815:440d 2606:4700:3036::ac43:b89f

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: openservice.icu
Measured 2026-11-03 03:10:11 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.68.13, 172.67.184.159
AAAA (IPv6): 2606:4700:3034::6815:440d, 2606:4700:3036::ac43:b89f
www AAAA:    2606:4700:3034::6815:440d, 2606:4700:3036::ac43:b89f

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: openservice.icu has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::6815:440d: answers (TCP 443)
    2606:4700:3036::ac43:b89f: answers (TCP 443)
- www over IPv6: www.openservice.icu has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::6815:440d: answers (TCP 443)
    2606:4700:3036::ac43:b89f: 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): openservice.icu didn't complete an HTTPS request over IPv6 (timed out).
    https://openservice.icu/ via 2606:4700:3034::6815:440d, certificate: valid (timed out)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/1svt8eecbp

Permanent link: aaaa.bot/r/1svt8eecbp · How we measure

Checked 2026-11-03 03:10:11 UTC. Full DNS report: dns.pizza/domain/openservice.icu · Age, certificate and blocklists: how.is/openservice.icu · JSON: /api/v1/openservice.icu