Yes — quintocuartoec.com has IPv6.

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

IPv6 readiness

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

Website over IPv6 quintocuartoec.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:c1fd answers · 443✓ 2606:4700:3030::6815:2478 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. fwd1.porkbun.com ✗fwd2.porkbun.com ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. bethany.ns.cloudflare.com ✓damian.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://quintocuartoec.com/ via 2606:4700:3037::ac43:c1fd → 302https://green-rice-86ce.cloudflareaccess.com/cdn-cgi/access/login/quintocuartoec.com?kid=781a2554339da66dd7247fa418312e868ded2990f78638d6ec268f78ef13f7bd&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjVmMjgyMTRiZDYyMDAxMmY4MGIwYzVjMDQ2ZTU4M2Y4MDgzZTVhMjI2YWM2YjU1ZWQzOTM1MDgxZDQzZjJkZTYifQ.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.ng1nIATGdBjE9gY4D7n4f-lp5Ex1PaqIa7gL-jcywO2TpSsU7g3yFG-k-HG_CoGEfF5GzfxGHrEGsn9IbTSv8Lf4v8ESaxJ4RAWF3i4dqGkjqSyMEKoVvRZBeaf9IrFf-UZ6Dm_1iX9vtYIUQ-Fu0u8uWXq8FbpVNqNB5xv_tS_v_E80Yb9W0QWaUVB7hdjJsf-h_HKhAW8n5u0UaVEIb2S-U3-jUEYZCorlgFr5QUURdR0e7gCjwrBnM8aImts83yhrLdbDbs_UW7ukd9vrIl_KEphlk15GCdkoEkyo9SBJfZa3NBduue2q0JycAAFLC506nv8tKqOFYTD00_-4PA&redirect_url=%2F via 2606:4700:300a::6813:c21d → 200

works

What's keeping quintocuartoec.com from an A

Mail servers without IPv6
fwd1.porkbun.com, fwd2.porkbun.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

quintocuartoec.com Has IPv6

A (IPv4)	104.21.36.120 172.67.193.253
AAAA (IPv6)	2606:4700:3037::ac43:c1fd 2606:4700:3030::6815:2478

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: quintocuartoec.com
Measured 2026-11-14 05:41:18 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.36.120, 172.67.193.253
AAAA (IPv6): 2606:4700:3037::ac43:c1fd, 2606:4700:3030::6815:2478

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: quintocuartoec.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:c1fd: answers (TCP 443)
    2606:4700:3030::6815:2478: 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 after 1 redirect: HTTP 200.
    https://quintocuartoec.com/ via 2606:4700:3037::ac43:c1fd -> HTTP 302, certificate: valid
    https://green-rice-86ce.cloudflareaccess.com/cdn-cgi/access/login/quintocuartoec.com?kid=781a2554339da66dd7247fa418312e868ded2990f78638d6ec268f78ef13f7bd&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjVmMjgyMTRiZDYyMDAxMmY4MGIwYzVjMDQ2ZTU4M2Y4MDgzZTVhMjI2YWM2YjU1ZWQzOTM1MDgxZDQzZjJkZTYifQ.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.ng1nIATGdBjE9gY4D7n4f-lp5Ex1PaqIa7gL-jcywO2TpSsU7g3yFG-k-HG_CoGEfF5GzfxGHrEGsn9IbTSv8Lf4v8ESaxJ4RAWF3i4dqGkjqSyMEKoVvRZBeaf9IrFf-UZ6Dm_1iX9vtYIUQ-Fu0u8uWXq8FbpVNqNB5xv_tS_v_E80Yb9W0QWaUVB7hdjJsf-h_HKhAW8n5u0UaVEIb2S-U3-jUEYZCorlgFr5QUURdR0e7gCjwrBnM8aImts83yhrLdbDbs_UW7ukd9vrIl_KEphlk15GCdkoEkyo9SBJfZa3NBduue2q0JycAAFLC506nv8tKqOFYTD00_-4PA&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/8mjoEinswU

Permanent link: aaaa.bot/r/8mjoEinswU · How we measure

Checked 2026-11-14 05:41:18 UTC. Full DNS report: dns.pizza/domain/quintocuartoec.com · Age, certificate and blocklists: how.is/quintocuartoec.com · JSON: /api/v1/quintocuartoec.com