Yes — moldeo.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 moldeo.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::ac43:8b1a answers · 443✓ 2606:4700:3032::6815:5704 answers · 443	yes
www over IPv6 www.moldeo.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:5704 answers · 443✓ 2606:4700:3034::ac43:8b1a 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. buck.ns.cloudflare.com ✓clarissa.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://moldeo.app/ via 2606:4700:3034::ac43:8b1a → 302https://withered-sound-68c7.cloudflareaccess.com/cdn-cgi/access/login/moldeo.app?kid=9e6383ac0b9cdc4c2a38551128a6b8bf61c59696d3922125dafbc2b88ee64932&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImI5OTE5MmM5NGJjNzhmZjk1ZDUyYjA1YzE2MDA5OTlkY2UwMDMzMjFhNTUzZDMwMDJmNGFjYmVmYjE2MTEwMzIifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6IjllNjM4M2FjMGI5Y2RjNGMyYTM4NTUxMTI4YTZiOGJmNjFjNTk2OTZkMzkyMjEyNWRhZmJjMmI4OGVlNjQ5MzIiLCJob3N0bmFtZSI6Im1vbGRlby5hcHAiLCJyZWRpcmVjdF91cmwiOiIvIiwic2VydmljZV90b2tlbl9zdGF0dXMiOmZhbHNlLCJpc193YXJwIjpmYWxzZSwiaXNfZ2F0ZXdheSI6ZmFsc2UsImV4cCI6MTc5NDM5MjAyMSwibmJmIjoxNzk0MzkxNzIxLCJpYXQiOjE3OTQzOTE3MjEsImF1dGhfc3RhdHVzIjoiTk9ORSIsIm10bHNfYXV0aCI6eyJjZXJ0X2lzc3Vlcl9kbiI6IiIsImNlcnRfc2VyaWFsIjoiIiwiY2VydF9pc3N1ZXJfc2tpIjoiIiwiY2VydF9wcmVzZW50ZWQiOmZhbHNlLCJjb21tb25fbmFtZSI6IiIsImF1dGhfc3RhdHVzIjoiTk9ORSJ9LCJyZWFsX2NvdW50cnkiOiJVUyIsImFwcF9zZXNzaW9uX2hhc2giOiIxMGU0ZDczZDAwNTcxYThlZmIwMzI5MWZkMjhiMzFhMzQ2ZDE5YmU4ODliMTQ5YWI0MTBkYWE4MjZiOTY1ZDdmIn0.NNC0SV5EBmEKMAaD2gA9QZLETjEZ6VWRsXE8UI3p2Ya2TVeKuWDmTtLj9Y0jD_jc8NTNJPzVYOmzX7dF5gblFcpGrJ7csVu8SY2LJoJY8Z-5d9gZsGaI8eoVEzp77Tvuo4hyWmM-e1J1u-y4E49htiv5tVj8YnAhMjp4S3vtKfUJ0EOqCTP708I2ChhsO1vhOSyvtQqHBo_8HZBVnfLNoJSzSkIcPpZ3vtTjb6VbZwrW-tmLkEL4-M5vBph25oA_oYuYytdqokqC3261IlhRUKYGlq3Wcv8JNUAk3R444zEo77dGIc4Kl-QEIOLTCJfWRK5aVd9NjKE81PQT2j2uEA&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/moldeo.app.svg)](https://aaaa.bot/moldeo.app)

Check again

moldeo.app Has IPv6

A (IPv4)	104.21.87.4 172.67.139.26
AAAA (IPv6)	2606:4700:3034::ac43:8b1a 2606:4700:3032::6815:5704

www.moldeo.app Has IPv6

A (IPv4)	104.21.87.4 172.67.139.26
AAAA (IPv6)	2606:4700:3032::6815:5704 2606:4700:3034::ac43:8b1a

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: moldeo.app
Measured 2026-11-11 10:08:41 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.87.4, 172.67.139.26
AAAA (IPv6): 2606:4700:3034::ac43:8b1a, 2606:4700:3032::6815:5704
www AAAA:    2606:4700:3032::6815:5704, 2606:4700:3034::ac43:8b1a

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: moldeo.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::ac43:8b1a: answers (TCP 443)
    2606:4700:3032::6815:5704: answers (TCP 443)
- www over IPv6: www.moldeo.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::6815:5704: answers (TCP 443)
    2606:4700:3034::ac43:8b1a: 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://moldeo.app/ via 2606:4700:3034::ac43:8b1a -> HTTP 302, certificate: valid
    https://withered-sound-68c7.cloudflareaccess.com/cdn-cgi/access/login/moldeo.app?kid=9e6383ac0b9cdc4c2a38551128a6b8bf61c59696d3922125dafbc2b88ee64932&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImI5OTE5MmM5NGJjNzhmZjk1ZDUyYjA1YzE2MDA5OTlkY2UwMDMzMjFhNTUzZDMwMDJmNGFjYmVmYjE2MTEwMzIifQ.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.NNC0SV5EBmEKMAaD2gA9QZLETjEZ6VWRsXE8UI3p2Ya2TVeKuWDmTtLj9Y0jD_jc8NTNJPzVYOmzX7dF5gblFcpGrJ7csVu8SY2LJoJY8Z-5d9gZsGaI8eoVEzp77Tvuo4hyWmM-e1J1u-y4E49htiv5tVj8YnAhMjp4S3vtKfUJ0EOqCTP708I2ChhsO1vhOSyvtQqHBo_8HZBVnfLNoJSzSkIcPpZ3vtTjb6VbZwrW-tmLkEL4-M5vBph25oA_oYuYytdqokqC3261IlhRUKYGlq3Wcv8JNUAk3R444zEo77dGIc4Kl-QEIOLTCJfWRK5aVd9NjKE81PQT2j2uEA&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/--1rr3D3B5

Permanent link: aaaa.bot/r/--1rr3D3B5 · How we measure

Checked 2026-11-11 10:08:41 UTC. Full DNS report: dns.pizza/domain/moldeo.app · Age, certificate and blocklists: how.is/moldeo.app · JSON: /api/v1/moldeo.app