Yes — mit.edu has IPv6.

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

This is a saved measurement from 2026-10-30 18:04 UTC. Check mit.edu live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 mit.edu has 2 IPv6 addresses and answers on every one we tested. ✓ 2600:1408:c400:f8b::255e answers · 443✓ 2600:1408:c400:f93::255e answers · 443	yes
www over IPv6 www.mit.edu has 2 IPv6 addresses and answers on every one we tested. ✓ 2600:1408:c400:f8b::255e answers · 443✓ 2600:1408:c400:f93::255e answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mit-edu.mail.protection.outlook.com ✓	yes
Nameservers have IPv6 3 of 8 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. use2.akam.net ✗use5.akam.net ✓asia1.akam.net ✗ns1-173.akam.net ✓usw2.akam.net ✗eur5.akam.net ✗ns1-37.akam.net ✓asia2.akam.net ✗	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.

https://mit.edu/ via 2600:1408:c400:f8b::255e → 302https://web.mit.edu/ via 2600:1408:c400:f8b::255e → 200

works

Nothing keeping you from an A

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

Check again

mit.edu Has IPv6

A (IPv4)	23.49.179.66
AAAA (IPv6)	2600:1408:c400:f8b::255e 2600:1408:c400:f93::255e

www.mit.edu Has IPv6

Alias of	www.mit.edu.edgekey.net → e9566.dscb.akamaiedge.net
A (IPv4)	23.49.179.66
AAAA (IPv6)	2600:1408:c400:f8b::255e 2600:1408:c400:f93::255e

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: mit.edu
Measured 2026-10-30 18:04:33 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    23.49.179.66
AAAA (IPv6): 2600:1408:c400:f8b::255e, 2600:1408:c400:f93::255e
www AAAA:    2600:1408:c400:f8b::255e, 2600:1408:c400:f93::255e

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: mit.edu has 2 IPv6 addresses and answers on every one we tested.
    2600:1408:c400:f8b::255e: answers (TCP 443)
    2600:1408:c400:f93::255e: answers (TCP 443)
- www over IPv6: www.mit.edu has 2 IPv6 addresses and answers on every one we tested.
    2600:1408:c400:f8b::255e: answers (TCP 443)
    2600:1408:c400:f93::255e: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 3 of 8 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 200.
    https://mit.edu/ via 2600:1408:c400:f8b::255e -> HTTP 302, certificate: valid
    https://web.mit.edu/ via 2600:1408:c400:f8b::255e -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/KwSjkTFMvk

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

Checked 2026-10-30 18:04:33 UTC. Full DNS report: dns.pizza/domain/mit.edu · JSON: /api/v1/mit.edu