Yes — autodiscover.mass.gov has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 autodiscover.mass.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2603:1036:207:455::8 answers · 80✓ 2603:1036:207:45a::8 answers · 80✓ 2603:1036:302:4154::8 answers · 80✓ 2603:1036:302:4159::8 answers · 80– 2603:1036:302:415b::8 not tested– 2603:1036:302:415e::8 not tested– 2603:1036:302:4841::8 not tested– 2603:1036:302:505c::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 6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. a5-66.akam.net ✓a8-67.akam.net ✓a1-243.akam.net ✓a11-66.akam.net ✓a16-64.akam.net ✓a18-66.akam.net ✓	yes

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

https://autodiscover.mass.gov/ via 2603:1036:207:455::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.mass.gov.svg)](https://aaaa.bot/autodiscover.mass.gov)

Check again

autodiscover.mass.gov Has IPv6

Alias of	autodiscover.outlook.com → autodiscover.outlook.cloud.microsoft → acdcatm.autodiscover.mira.tm.svc.cloud.microsoft → autod.ms-acdc-autod.office.com
A (IPv4)	52.96.173.200 52.96.104.40 52.96.122.24 52.96.181.248
AAAA (IPv6)	2603:1036:207:455::8 2603:1036:207:45a::8 2603:1036:302:4154::8 2603:1036:302:4159::8 2603:1036:302:415b::8 2603:1036:302:415e::8 2603:1036:302:4841::8 2603:1036:302:505c::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.mass.gov
Measured 2026-11-03 01:14:02 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    52.96.173.200, 52.96.104.40, 52.96.122.24, 52.96.181.248
AAAA (IPv6): 2603:1036:207:455::8, 2603:1036:207:45a::8, 2603:1036:302:4154::8, 2603:1036:302:4159::8, 2603:1036:302:415b::8, 2603:1036:302:415e::8, 2603:1036:302:4841::8, 2603:1036:302:505c::8

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: autodiscover.mass.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2603:1036:207:455::8: answers (TCP 80)
    2603:1036:207:45a::8: answers (TCP 80)
    2603:1036:302:4154::8: answers (TCP 80)
    2603:1036:302:4159::8: answers (TCP 80)
    2603:1036:302:415b::8: not tested
    2603:1036:302:415e::8: not tested
    2603:1036:302:4841::8: not tested
    2603:1036:302:505c::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: 6 of 6 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.mass.gov didn't complete an HTTPS request over IPv6 (ECONNREFUSED).
    https://autodiscover.mass.gov/ via 2603:1036:207:455::8 (ECONNREFUSED)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/79eaqXW6mV

Permanent link: aaaa.bot/r/79eaqXW6mV · How we measure

Checked 2026-11-03 01:14:02 UTC. Full DNS report: dns.pizza/domain/autodiscover.mass.gov · Age, certificate and blocklists: how.is/autodiscover.mass.gov · JSON: /api/v1/autodiscover.mass.gov