Yes — autodiscover.hotmail.com has IPv6.

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

This is a saved measurement from 2026-11-02 13:04 UTC. Check autodiscover.hotmail.com live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 autodiscover.hotmail.com has 4 IPv6 addresses and answers on every one we tested. ✓ 2603:1036:302:4836::2 answers · 443✓ 2603:1036:302:4842::2 answers · 443✓ 2603:1036:303:3c17::2 answers · 443✓ 2603:1036:207:86c::2 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. ns1-205.azure-dns.com ✓ns2-205.azure-dns.net ✓ns3-205.azure-dns.org ✓ns4-205.azure-dns.info ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 417.

https://autodiscover.hotmail.com/ via 2603:1036:302:4836::2 → 301https://autodiscover.hotmail.com/mail/ via 2603:1036:302:4836::2 → 417

works

Nothing keeping you from an A

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

Check again

autodiscover.hotmail.com Has IPv6

Alias of	eas.outlook.com → outlook.office365.com → outlook.cloud.microsoft → acdcatm.outlook.mira.tm.svc.cloud.microsoft → shed.outlook.acdc.tm.svc.cloud.microsoft
A (IPv4)	52.96.172.114 52.96.179.226 52.96.122.18 52.96.165.242
AAAA (IPv6)	2603:1036:302:4836::2 2603:1036:302:4842::2 2603:1036:303:3c17::2 2603:1036:207:86c::2

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.hotmail.com
Measured 2026-11-02 13:04:30 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    52.96.172.114, 52.96.179.226, 52.96.122.18, 52.96.165.242
AAAA (IPv6): 2603:1036:302:4836::2, 2603:1036:302:4842::2, 2603:1036:303:3c17::2, 2603:1036:207:86c::2

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: autodiscover.hotmail.com has 4 IPv6 addresses and answers on every one we tested.
    2603:1036:302:4836::2: answers (TCP 443)
    2603:1036:302:4842::2: answers (TCP 443)
    2603:1036:303:3c17::2: answers (TCP 443)
    2603:1036:207:86c::2: 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: 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): Loads over IPv6 with a valid certificate after 1 redirect: HTTP 417.
    https://autodiscover.hotmail.com/ via 2603:1036:302:4836::2 -> HTTP 301, certificate: valid
    https://autodiscover.hotmail.com/mail/ via 2603:1036:302:4836::2 -> HTTP 417, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/MWl2WYGgO7

Permanent link: aaaa.bot/r/MWl2WYGgO7 · How we measure

Checked 2026-11-02 13:04:30 UTC. Full DNS report: dns.pizza/domain/autodiscover.hotmail.com · Age, certificate and blocklists: how.is/autodiscover.hotmail.com · JSON: /api/v1/autodiscover.hotmail.com