Yes — archivum.fyi has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 archivum.fyi has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:18a7 answers · 443✓ 2606:4700:3035::ac43:dbbf answers · 443	yes
www over IPv6 www.archivum.fyi has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:18a7 answers · 443✓ 2606:4700:3035::ac43:dbbf 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. emerie.ns.cloudflare.com ✓joel.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 2 redirects: HTTP 200.

https://archivum.fyi/ via 2606:4700:3034::6815:18a7 → 301https://app.archivum.fyi/ via 2606:4700:3035::ac43:dbbf → 302https://empty-math-18e3.cloudflareaccess.com/cdn-cgi/access/login/app.archivum.fyi?kid=e785c3d0e17e06210d53a4f475923a6980e58dfa4c0d08883eb7f296f8aee0e2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.HGR5hru68VtV9AYWno1AFFA0XFzDtJjZT29zdJmRzMA24HDpOqdTHH1kmcvs-crBZHnXH_ti-Ta06zcao4WEUp1qYC6Uo3KFjNIbkaDneAJvayX0m4tHAIXnigA5EeGQsOsk_4Q1vdXm6z19VXkkrseI3LBs_4iO_8PAPGyFAUrmF5pxALzRfR1_eSPIwgpzOTXDZONIEypw5hJh7ploEG2BH0dvghYhgfTGJP3v_prMcjMn5_EhzacRkLVx9s-NXWIxKpMmvr39rUKr9ARW7u6ozUbLe_sRkZRKPH6BmXnTNI4CusxwkO1TnpRuANVCs-QobQd0c_lgRZB6WK9DAw&redirect_url=%2F via 2606:4700:300a::6813:c21d → 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/archivum.fyi.svg)](https://aaaa.bot/archivum.fyi)

Check again

archivum.fyi Has IPv6

A (IPv4)	172.67.219.191 104.21.24.167
AAAA (IPv6)	2606:4700:3034::6815:18a7 2606:4700:3035::ac43:dbbf

www.archivum.fyi Has IPv6

A (IPv4)	104.21.24.167 172.67.219.191
AAAA (IPv6)	2606:4700:3034::6815:18a7 2606:4700:3035::ac43:dbbf

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: archivum.fyi
Measured 2026-11-10 21:32:48 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.219.191, 104.21.24.167
AAAA (IPv6): 2606:4700:3034::6815:18a7, 2606:4700:3035::ac43:dbbf
www AAAA:    2606:4700:3034::6815:18a7, 2606:4700:3035::ac43:dbbf

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: archivum.fyi has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::6815:18a7: answers (TCP 443)
    2606:4700:3035::ac43:dbbf: answers (TCP 443)
- www over IPv6: www.archivum.fyi has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::6815:18a7: answers (TCP 443)
    2606:4700:3035::ac43:dbbf: 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 2 redirects: HTTP 200.
    https://archivum.fyi/ via 2606:4700:3034::6815:18a7 -> HTTP 301, certificate: valid
    https://app.archivum.fyi/ via 2606:4700:3035::ac43:dbbf -> HTTP 302, certificate: valid
    https://empty-math-18e3.cloudflareaccess.com/cdn-cgi/access/login/app.archivum.fyi?kid=e785c3d0e17e06210d53a4f475923a6980e58dfa4c0d08883eb7f296f8aee0e2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.HGR5hru68VtV9AYWno1AFFA0XFzDtJjZT29zdJmRzMA24HDpOqdTHH1kmcvs-crBZHnXH_ti-Ta06zcao4WEUp1qYC6Uo3KFjNIbkaDneAJvayX0m4tHAIXnigA5EeGQsOsk_4Q1vdXm6z19VXkkrseI3LBs_4iO_8PAPGyFAUrmF5pxALzRfR1_eSPIwgpzOTXDZONIEypw5hJh7ploEG2BH0dvghYhgfTGJP3v_prMcjMn5_EhzacRkLVx9s-NXWIxKpMmvr39rUKr9ARW7u6ozUbLe_sRkZRKPH6BmXnTNI4CusxwkO1TnpRuANVCs-QobQd0c_lgRZB6WK9DAw&redirect_url=%2F via 2606:4700:300a::6813:c21d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/VKJ89EFyHD

Permanent link: aaaa.bot/r/VKJ89EFyHD · How we measure

Checked 2026-11-10 21:32:48 UTC. Full DNS report: dns.pizza/domain/archivum.fyi · Age, certificate and blocklists: how.is/archivum.fyi · JSON: /api/v1/archivum.fyi