Yes — calendar.strava.com has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
calendar.strava.com has an AAAA record and answers on it.
✓ 2607:f8b0:4004:c17::79 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
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns-145.awsdns-18.com ✓ns-1461.awsdns-54.org ✓ns-1806.awsdns-33.co.uk ✓ns-610.awsdns-12.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
calendar.strava.com didn't complete an HTTPS request over IPv6 (connection closed before a response).
https://calendar.strava.com/ via 2607:f8b0:4004:c17::79 · connection closed before a response
?
 Load calendar.strava.com over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

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

Check again

calendar.strava.com  Has IPv6

Alias ofghs.google.com
A (IPv4)192.178.155.121
AAAA (IPv6)2607:f8b0:4004:c17::79

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

 Permanent link: aaaa.bot/r/7i8rHmtYpN · How we measure

Checked 2026-11-01 13:46:32 UTC. Full DNS report: dns.pizza/domain/calendar.strava.com · JSON: /api/v1/calendar.strava.com