Yes — uwcse.date has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 uwcse.date has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::6815:2927 answers · 443✓ 2606:4700:3034::ac43:8e54 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 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. julissa.ns.cloudflare.com ✓pete.ns.cloudflare.com ✓	yes

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

https://uwcse.date/ via 2606:4700:3030::6815:2927 → 302https://jason-31.cloudflareaccess.com/cdn-cgi/access/login/uwcse.date?kid=a8ad71b6e576da16b23cce465b2dfae3ed53679051f2bccbddf1fe07fdcd940a&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjZkYTcxNGNiN2U3YmJhNjNhM2U2ZWI2ZGEyZTM0YTgwMzc0MGFiZWYyNzM2ZDZiNmIyZGY1YzdmODUzMmY4NjUifQ.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.kmUWuMukisgNIb3bJr_Ki_UyfXe7xDMMx4a3E089gDXIrWSlQ4Ww5ryuhen1pmdTsZ7625Bd9ZMWJi9cPvEBEo6eo-n8suyEK_LMosKY1qNpJQEB4RjrZ5IndvEx4NFevc6faV0KiK6E2SX4ppwbQB8SpJA3JJebKxFxA1VxikSX3qP_UTWh5jVCjSYe2WU9hdpB8R1vmD67oZn-ATxXz0JJirr2pENVXYAth4fvtLH6YqJGmT7n38v3SznAaI8j0vWGdvYdB0E2UTFjE6xqR5ztKL4wRrPDljBb0W2Ph-e0SyWCSLunGdWKaK_9Jw56lU-GaWFWk-8YZ5HrlV7ImA&redirect_url=%2F via 2606:4700:300a::6813:c31d → 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/uwcse.date.svg)](https://aaaa.bot/uwcse.date)

Check again

uwcse.date Has IPv6

A (IPv4)	104.21.41.39 172.67.142.84
AAAA (IPv6)	2606:4700:3030::6815:2927 2606:4700:3034::ac43:8e54

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: uwcse.date
Measured 2026-11-02 17:03:35 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.41.39, 172.67.142.84
AAAA (IPv6): 2606:4700:3030::6815:2927, 2606:4700:3034::ac43:8e54

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: uwcse.date has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::6815:2927: answers (TCP 443)
    2606:4700:3034::ac43:8e54: 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 2 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://uwcse.date/ via 2606:4700:3030::6815:2927 -> HTTP 302, certificate: valid
    https://jason-31.cloudflareaccess.com/cdn-cgi/access/login/uwcse.date?kid=a8ad71b6e576da16b23cce465b2dfae3ed53679051f2bccbddf1fe07fdcd940a&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjZkYTcxNGNiN2U3YmJhNjNhM2U2ZWI2ZGEyZTM0YTgwMzc0MGFiZWYyNzM2ZDZiNmIyZGY1YzdmODUzMmY4NjUifQ.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.kmUWuMukisgNIb3bJr_Ki_UyfXe7xDMMx4a3E089gDXIrWSlQ4Ww5ryuhen1pmdTsZ7625Bd9ZMWJi9cPvEBEo6eo-n8suyEK_LMosKY1qNpJQEB4RjrZ5IndvEx4NFevc6faV0KiK6E2SX4ppwbQB8SpJA3JJebKxFxA1VxikSX3qP_UTWh5jVCjSYe2WU9hdpB8R1vmD67oZn-ATxXz0JJirr2pENVXYAth4fvtLH6YqJGmT7n38v3SznAaI8j0vWGdvYdB0E2UTFjE6xqR5ztKL4wRrPDljBb0W2Ph-e0SyWCSLunGdWKaK_9Jw56lU-GaWFWk-8YZ5HrlV7ImA&redirect_url=%2F via 2606:4700:300a::6813:c31d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/THggrjUq81

Permanent link: aaaa.bot/r/THggrjUq81 · How we measure

Checked 2026-11-02 17:03:35 UTC. Full DNS report: dns.pizza/domain/uwcse.date · Age, certificate and blocklists: how.is/uwcse.date · JSON: /api/v1/uwcse.date