Yes — mobile.nyu.edu has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 mobile.nyu.edu has 3 IPv6 addresses and answers on every one we tested. ✓ 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 answers · 443✓ 2600:1f14:2009:e703:72ea:488e:77a2:df6f answers · 443✓ 2600:1f14:2009:e704:9bed:6d73:73f6:f981 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 2 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns4.nyu.edu ✗ns2.nyu.org ✓ns1.nyu.net ✓	yes

HTTPS over IPv6 · not part of the grade yet
The certificate served over IPv6 at 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 isn't valid for mobile.nyu.edu: ERR_TLS_CERT_ALTNAME_INVALID.

https://mobile.nyu.edu/ via 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 · ERR_TLS_CERT_ALTNAME_INVALID

problem

Nothing keeping you from an A

The certificate served over IPv6 is wrong
The certificate served over IPv6 at 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 isn't valid for mobile.nyu.edu: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 serves the same certificate as your IPv4 address.

Check again

mobile.nyu.edu Has IPv6

Alias of	MOBILEAPP.nyu.edu → NYU-PROD.MODOLABS.NET → k8s-usw2auto202511072-42cad3d524-1375096474.us-west-2.elb.amazonaws.com
A (IPv4)	35.86.58.252 16.145.40.52 44.237.90.110
AAAA (IPv6)	2600:1f14:2009:e705:71e5:81bc:ea1d:d185 2600:1f14:2009:e703:72ea:488e:77a2:df6f 2600:1f14:2009:e704:9bed:6d73:73f6:f981

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: mobile.nyu.edu
Measured 2026-11-03 02:44:13 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    35.86.58.252, 16.145.40.52, 44.237.90.110
AAAA (IPv6): 2600:1f14:2009:e705:71e5:81bc:ea1d:d185, 2600:1f14:2009:e703:72ea:488e:77a2:df6f, 2600:1f14:2009:e704:9bed:6d73:73f6:f981

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: mobile.nyu.edu has 3 IPv6 addresses and answers on every one we tested.
    2600:1f14:2009:e705:71e5:81bc:ea1d:d185: answers (TCP 443)
    2600:1f14:2009:e703:72ea:488e:77a2:df6f: answers (TCP 443)
    2600:1f14:2009:e704:9bed:6d73:73f6:f981: 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: 2 of 3 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): The certificate served over IPv6 at 2600:1f14:2009:e705:71e5:81bc:ea1d:d185 isn't valid for mobile.nyu.edu: ERR_TLS_CERT_ALTNAME_INVALID.
    https://mobile.nyu.edu/ via 2600:1f14:2009:e705:71e5:81bc:ea1d:d185, certificate: ERR_TLS_CERT_ALTNAME_INVALID
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/RoKQozWLod

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

Checked 2026-11-03 02:44:13 UTC. Full DNS report: dns.pizza/domain/mobile.nyu.edu · Age, certificate and blocklists: how.is/mobile.nyu.edu · JSON: /api/v1/mobile.nyu.edu