Yes — earthesaurus.org has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 earthesaurus.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:a4bd answers · 443✓ 2606:4700:3030::6815:32b5 answers · 443	yes
www over IPv6 www.earthesaurus.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:a4bd answers · 443✓ 2606:4700:3030::6815:32b5 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. daphne.ns.cloudflare.com ✓patryk.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://earthesaurus.org/ via 2606:4700:3035::ac43:a4bd → 302https://app.earthesaurus.org/research-map.html via 2606:4700:3030::6815:32b5 → 302https://matthew-private-rooms.cloudflareaccess.com/cdn-cgi/access/login/app.earthesaurus.org?kid=3c31b1d54361e2da0d80ca132371d54f53e3c77d7a0e36ed7987449336e1f380&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImViNzQwOTY1NDc2N2U0NjM3YTZjNDdmM2IzNGRiNmFhMzMyODY2Yzc0MzdhMzllNjNlMDJjNWMxNWNkMTU0ZTAifQ.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.gRsLdxMIPu_iDBW6tof2jJafu3P0FUX464rOUo2qpUm1zFBlrrgPKRlIuIKAmpUJ_Mt_6LgordZR_Hm6akSnkQVbY96x7VV-2zUgp2PArHnCW5TAkAyISdjWDHQ6jm9h9hK4V_N4vFfF7Gr1gsBeF-LRoJd5KFilAfhF7WsAmBzvzy_Cmb6x_hkjhYcqLfhzdpipPKNXOSA_lwFNX8_LPwjo08SMk4HYnnHpHonTzbfq9aUrF8CfcsVDfqHVBCM1BpZSYm2XmuQRDUDQHKRlckVcbZrAy-hAMkg3nN8z0gEQwosy3vx5ukjq6QqPICE9MxOO090d2mcSReUox2P-fg&redirect_url=%2Fresearch-map.html 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/earthesaurus.org.svg)](https://aaaa.bot/earthesaurus.org)

Check again

earthesaurus.org Has IPv6

A (IPv4)	104.21.50.181 172.67.164.189
AAAA (IPv6)	2606:4700:3035::ac43:a4bd 2606:4700:3030::6815:32b5

www.earthesaurus.org Has IPv6

A (IPv4)	104.21.50.181 172.67.164.189
AAAA (IPv6)	2606:4700:3035::ac43:a4bd 2606:4700:3030::6815:32b5

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: earthesaurus.org
Measured 2026-11-14 04:27:15 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.50.181, 172.67.164.189
AAAA (IPv6): 2606:4700:3035::ac43:a4bd, 2606:4700:3030::6815:32b5
www AAAA:    2606:4700:3035::ac43:a4bd, 2606:4700:3030::6815:32b5

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: earthesaurus.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:a4bd: answers (TCP 443)
    2606:4700:3030::6815:32b5: answers (TCP 443)
- www over IPv6: www.earthesaurus.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:a4bd: answers (TCP 443)
    2606:4700:3030::6815:32b5: 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://earthesaurus.org/ via 2606:4700:3035::ac43:a4bd -> HTTP 302, certificate: valid
    https://app.earthesaurus.org/research-map.html via 2606:4700:3030::6815:32b5 -> HTTP 302, certificate: valid
    https://matthew-private-rooms.cloudflareaccess.com/cdn-cgi/access/login/app.earthesaurus.org?kid=3c31b1d54361e2da0d80ca132371d54f53e3c77d7a0e36ed7987449336e1f380&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImViNzQwOTY1NDc2N2U0NjM3YTZjNDdmM2IzNGRiNmFhMzMyODY2Yzc0MzdhMzllNjNlMDJjNWMxNWNkMTU0ZTAifQ.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.gRsLdxMIPu_iDBW6tof2jJafu3P0FUX464rOUo2qpUm1zFBlrrgPKRlIuIKAmpUJ_Mt_6LgordZR_Hm6akSnkQVbY96x7VV-2zUgp2PArHnCW5TAkAyISdjWDHQ6jm9h9hK4V_N4vFfF7Gr1gsBeF-LRoJd5KFilAfhF7WsAmBzvzy_Cmb6x_hkjhYcqLfhzdpipPKNXOSA_lwFNX8_LPwjo08SMk4HYnnHpHonTzbfq9aUrF8CfcsVDfqHVBCM1BpZSYm2XmuQRDUDQHKRlckVcbZrAy-hAMkg3nN8z0gEQwosy3vx5ukjq6QqPICE9MxOO090d2mcSReUox2P-fg&redirect_url=%2Fresearch-map.html 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/nmYqT5CWyt

Permanent link: aaaa.bot/r/nmYqT5CWyt · How we measure

Checked 2026-11-14 04:27:15 UTC. Full DNS report: dns.pizza/domain/earthesaurus.org · Age, certificate and blocklists: how.is/earthesaurus.org · JSON: /api/v1/earthesaurus.org