Yes — serializm-official.cfd has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 serializm-official.cfd has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:9dba answers · 443✓ 2606:4700:3034::6815:8ac answers · 443	yes
www over IPv6 www.serializm-official.cfd has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:9dba answers · 443✓ 2606:4700:3034::6815:8ac 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. evelyn.ns.cloudflare.com ✓marek.ns.cloudflare.com ✓	yes

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

https://serializm-official.cfd/ via 2606:4700:3030::ac43:9dba → 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/serializm-official.cfd.svg)](https://aaaa.bot/serializm-official.cfd)

Check again

serializm-official.cfd Has IPv6

A (IPv4)	104.21.8.172 172.67.157.186
AAAA (IPv6)	2606:4700:3030::ac43:9dba 2606:4700:3034::6815:8ac

www.serializm-official.cfd Has IPv6

A (IPv4)	172.67.157.186 104.21.8.172
AAAA (IPv6)	2606:4700:3030::ac43:9dba 2606:4700:3034::6815:8ac

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: serializm-official.cfd
Measured 2026-11-11 18:15:26 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.8.172, 172.67.157.186
AAAA (IPv6): 2606:4700:3030::ac43:9dba, 2606:4700:3034::6815:8ac
www AAAA:    2606:4700:3030::ac43:9dba, 2606:4700:3034::6815:8ac

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: serializm-official.cfd has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:9dba: answers (TCP 443)
    2606:4700:3034::6815:8ac: answers (TCP 443)
- www over IPv6: www.serializm-official.cfd has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:9dba: answers (TCP 443)
    2606:4700:3034::6815:8ac: 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: HTTP 200.
    https://serializm-official.cfd/ via 2606:4700:3030::ac43:9dba -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/BWJUB_supu

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

Checked 2026-11-11 18:15:26 UTC. Full DNS report: dns.pizza/domain/serializm-official.cfd · Age, certificate and blocklists: how.is/serializm-official.cfd · JSON: /api/v1/serializm-official.cfd