Yes — autodiscover.churnzero.net has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 autodiscover.churnzero.net has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2603:1036:207:45a::8 answers · 80✓ 2603:1036:207:869::8 answers · 80✓ 2603:1036:207:86c::8 answers · 80✓ 2603:1036:207:2001::8 answers · 80– 2603:1036:302:415a::8 not tested– 2603:1036:302:415d::8 not tested– 2603:1036:302:4832::8 not tested– 2603:1036:302:4834::8 not tested	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-117.awsdns-14.com ✓ns-1256.awsdns-29.org ✓ns-1806.awsdns-33.co.uk ✓ns-938.awsdns-53.net ✓	yes

HTTPS over IPv6 · not part of the grade yet
autodiscover.churnzero.net didn't complete an HTTPS request over IPv6 (ECONNREFUSED).

https://autodiscover.churnzero.net/ via 2603:1036:207:45a::8 · ECONNREFUSED

Nothing keeping you from an A

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

Check again

autodiscover.churnzero.net Has IPv6

Alias of	autodiscover.outlook.com → autodiscover.outlook.cloud.microsoft → acdcatm.autodiscover.mira.tm.svc.cloud.microsoft → atm.autodiscover.mira.tm.svc.cloud.microsoft
A (IPv4)	40.104.46.40 40.104.46.88 52.96.87.216 52.96.88.24 52.96.88.88 52.96.111.56 52.96.182.104 52.96.183.40
AAAA (IPv6)	2603:1036:207:45a::8 2603:1036:207:869::8 2603:1036:207:86c::8 2603:1036:207:2001::8 2603:1036:302:415a::8 2603:1036:302:415d::8 2603:1036:302:4832::8 2603:1036:302:4834::8

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: autodiscover.churnzero.net
Measured 2026-11-02 19:50:56 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    40.104.46.40, 40.104.46.88, 52.96.87.216, 52.96.88.24, 52.96.88.88, 52.96.111.56, 52.96.182.104, 52.96.183.40
AAAA (IPv6): 2603:1036:207:45a::8, 2603:1036:207:869::8, 2603:1036:207:86c::8, 2603:1036:207:2001::8, 2603:1036:302:415a::8, 2603:1036:302:415d::8, 2603:1036:302:4832::8, 2603:1036:302:4834::8

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: autodiscover.churnzero.net has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2603:1036:207:45a::8: answers (TCP 80)
    2603:1036:207:869::8: answers (TCP 80)
    2603:1036:207:86c::8: answers (TCP 80)
    2603:1036:207:2001::8: answers (TCP 80)
    2603:1036:302:415a::8: not tested
    2603:1036:302:415d::8: not tested
    2603:1036:302:4832::8: not tested
    2603:1036:302:4834::8: not tested
- 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: 4 of 4 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): autodiscover.churnzero.net didn't complete an HTTPS request over IPv6 (ECONNREFUSED).
    https://autodiscover.churnzero.net/ via 2603:1036:207:45a::8 (ECONNREFUSED)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/O1ccs6LWRb

Permanent link: aaaa.bot/r/O1ccs6LWRb · How we measure

Checked 2026-11-02 19:50:56 UTC. Full DNS report: dns.pizza/domain/autodiscover.churnzero.net · Age, certificate and blocklists: how.is/autodiscover.churnzero.net · JSON: /api/v1/autodiscover.churnzero.net