Yes — webmail.sc.edu has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 webmail.sc.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2603:1036:207:459::2 answers · 443✓ 2603:1036:207:45b::2 answers · 443✓ 2603:1036:207:869::2 answers · 443✓ 2603:1036:302:4159::2 answers · 443– 2603:1036:302:415e::2 not tested– 2603:1036:302:4836::2 not tested– 2603:1036:302:505a::2 not tested– 2603:1036:302:5062::2 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 5 of 5 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns4.dnsmadeeasy.com ✓ns0.dnsmadeeasy.com ✓ns2.dnsmadeeasy.com ✓ns1.dnsmadeeasy.com ✓ns3.dnsmadeeasy.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
The certificate served over IPv6 at 2603:1036:207:459::2 isn't valid for webmail.sc.edu: ERR_TLS_CERT_ALTNAME_INVALID.

https://webmail.sc.edu/ via 2603:1036:207:459::2 · 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 2603:1036:207:459::2 isn't valid for webmail.sc.edu: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2603:1036:207:459::2 serves the same certificate as your IPv4 address.

Check again

webmail.sc.edu Has IPv6

Alias of	outlook.office365.com → outlook.cloud.microsoft → acdcatm.outlook.mira.tm.svc.cloud.microsoft → shed.outlook.acdc.tm.svc.cloud.microsoft
A (IPv4)	52.96.183.242 52.96.165.194 40.104.46.18 52.96.182.114
AAAA (IPv6)	2603:1036:207:459::2 2603:1036:207:45b::2 2603:1036:207:869::2 2603:1036:302:4159::2 2603:1036:302:415e::2 2603:1036:302:4836::2 2603:1036:302:505a::2 2603:1036:302:5062::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: webmail.sc.edu
Measured 2026-11-03 08:36:11 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    52.96.183.242, 52.96.165.194, 40.104.46.18, 52.96.182.114
AAAA (IPv6): 2603:1036:207:459::2, 2603:1036:207:45b::2, 2603:1036:207:869::2, 2603:1036:302:4159::2, 2603:1036:302:415e::2, 2603:1036:302:4836::2, 2603:1036:302:505a::2, 2603:1036:302:5062::2

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: webmail.sc.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2603:1036:207:459::2: answers (TCP 443)
    2603:1036:207:45b::2: answers (TCP 443)
    2603:1036:207:869::2: answers (TCP 443)
    2603:1036:302:4159::2: answers (TCP 443)
    2603:1036:302:415e::2: not tested
    2603:1036:302:4836::2: not tested
    2603:1036:302:505a::2: not tested
    2603:1036:302:5062::2: 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: 5 of 5 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 2603:1036:207:459::2 isn't valid for webmail.sc.edu: ERR_TLS_CERT_ALTNAME_INVALID.
    https://webmail.sc.edu/ via 2603:1036:207:459::2, certificate: ERR_TLS_CERT_ALTNAME_INVALID
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/dgpdsBoHdo

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

Checked 2026-11-03 08:36:11 UTC. Full DNS report: dns.pizza/domain/webmail.sc.edu · Age, certificate and blocklists: how.is/webmail.sc.edu · JSON: /api/v1/webmail.sc.edu