Yes — itch.io has IPv6.

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

This is a saved measurement from 2026-10-31 14:42 UTC. Check itch.io live now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 itch.io has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::ac43:4563 answers · 443✓ 2606:4700:20::681a:8c6 answers · 443✓ 2606:4700:20::681a:9c6 answers · 443	yes
www over IPv6 www.itch.io has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::ac43:4563 answers · 443✓ 2606:4700:20::681a:8c6 answers · 443✓ 2606:4700:20::681a:9c6 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx.zoho.com ✗mx2.zoho.com ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. dawn.ns.cloudflare.com ✓noah.ns.cloudflare.com ✓	yes

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

https://itch.io/ via 2606:4700:20::ac43:4563 → 200

works

What's keeping itch.io from an A

Mail servers without IPv6
mx.zoho.com, mx2.zoho.com have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

itch.io Has IPv6

A (IPv4)	172.67.69.99 104.26.9.198 104.26.8.198
AAAA (IPv6)	2606:4700:20::ac43:4563 2606:4700:20::681a:8c6 2606:4700:20::681a:9c6

www.itch.io Has IPv6

A (IPv4)	104.26.8.198 172.67.69.99 104.26.9.198
AAAA (IPv6)	2606:4700:20::ac43:4563 2606:4700:20::681a:8c6 2606:4700:20::681a:9c6

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: itch.io
Measured 2026-10-31 14:42:21 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.69.99, 104.26.9.198, 104.26.8.198
AAAA (IPv6): 2606:4700:20::ac43:4563, 2606:4700:20::681a:8c6, 2606:4700:20::681a:9c6
www AAAA:    2606:4700:20::ac43:4563, 2606:4700:20::681a:8c6, 2606:4700:20::681a:9c6

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: itch.io has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::ac43:4563: answers (TCP 443)
    2606:4700:20::681a:8c6: answers (TCP 443)
    2606:4700:20::681a:9c6: answers (TCP 443)
- www over IPv6: www.itch.io has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::ac43:4563: answers (TCP 443)
    2606:4700:20::681a:8c6: answers (TCP 443)
    2606:4700:20::681a:9c6: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers 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: HTTP 200.
    https://itch.io/ via 2606:4700:20::ac43:4563 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/lQzcaho0ON

Permanent link: aaaa.bot/r/lQzcaho0ON · How we measure

Checked 2026-10-31 14:42:21 UTC. Full DNS report: dns.pizza/domain/itch.io · JSON: /api/v1/itch.io