Yes — calendly-anthropic-meeting.org has IPv6.

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

This is a saved measurement from 2026-11-02 03:31 UTC. Check calendly-anthropic-meeting.org live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 calendly-anthropic-meeting.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::6815:2022 answers · 443✓ 2606:4700:3035::ac43:b699 answers · 443	yes
www over IPv6 www.calendly-anthropic-meeting.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:b699 answers · 443✓ 2606:4700:3030::6815:2022 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. jaime.ns.cloudflare.com ✓jule.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 404.

https://calendly-anthropic-meeting.org/ via 2606:4700:3030::6815:2022 → 404

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/calendly-anthropic-meeting.org.svg)](https://aaaa.bot/calendly-anthropic-meeting.org)

Check again

calendly-anthropic-meeting.org Has IPv6

A (IPv4)	172.67.182.153 104.21.32.34
AAAA (IPv6)	2606:4700:3030::6815:2022 2606:4700:3035::ac43:b699

www.calendly-anthropic-meeting.org Has IPv6

A (IPv4)	104.21.32.34 172.67.182.153
AAAA (IPv6)	2606:4700:3035::ac43:b699 2606:4700:3030::6815:2022

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: calendly-anthropic-meeting.org
Measured 2026-11-02 03:31:56 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.182.153, 104.21.32.34
AAAA (IPv6): 2606:4700:3030::6815:2022, 2606:4700:3035::ac43:b699
www AAAA:    2606:4700:3035::ac43:b699, 2606:4700:3030::6815:2022

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: calendly-anthropic-meeting.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::6815:2022: answers (TCP 443)
    2606:4700:3035::ac43:b699: answers (TCP 443)
- www over IPv6: www.calendly-anthropic-meeting.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:b699: answers (TCP 443)
    2606:4700:3030::6815:2022: 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 404.
    https://calendly-anthropic-meeting.org/ via 2606:4700:3030::6815:2022 -> HTTP 404, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/Yg-nZGQt7w

Permanent link: aaaa.bot/r/Yg-nZGQt7w · How we measure

Checked 2026-11-02 03:31:56 UTC. Full DNS report: dns.pizza/domain/calendly-anthropic-meeting.org · Age, certificate and blocklists: how.is/calendly-anthropic-meeting.org · JSON: /api/v1/calendly-anthropic-meeting.org