Yes — dubl.work has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 dubl.work has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:4f2e answers · 443✓ 2606:4700:3033::ac43:8df0 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. betty.ns.cloudflare.com ✓dan.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://dubl.work/ via 2606:4700:3034::6815:4f2e → 302https://late-frog-e0c5.cloudflareaccess.com/cdn-cgi/access/login/dubl.work?kid=ad2d745cad1e9056ded7ceddc063eca2d6eb9352ca6e554c97716d241e3373d4&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImIxYzg2ZmE3YjBjNzViMTcwZjA0NDg5NDY0YWYzMDQ5NDFmN2RiMjNmZTVkZGY2ODE0MzFhNGE0ZjJjODE5MmUifQ.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.p3hZEx6iEBiRUBNaIUCqB711_SwM6XMVXFrirGzwWXrLNJO1RSKo1_F375dbaM_AEx16-7xLKY-oUWnjjgTca2YgOZ54eUfF7M66zQEd3ybEI3qHLqK_MZgSUjiRAEoIbI2BMB67NehrP9GFAtnLSsRyFyHTVc7d9mNZk29mHYmuvmByUb_PFNAMYxS88uBicps4ZCvOVAXFJ6dz1FPYXTQ6fDbB1UBMTftgChNGFD6ovTlzQQPIdKLPRg_4Jw0Nwx7ks9SpZ-JGLVb6CDNYOqvtKaGEqSvhOGPXEhBRMz--RWY1lLZvoZ0UfH0ofQ7wrdc1c7mTzYkD-4qqTGpWUA&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/dubl.work.svg)](https://aaaa.bot/dubl.work)

Check again

dubl.work Has IPv6

A (IPv4)	172.67.141.240 104.21.79.46
AAAA (IPv6)	2606:4700:3034::6815:4f2e 2606:4700:3033::ac43:8df0

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: dubl.work
Measured 2026-11-02 10:35:00 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.141.240, 104.21.79.46
AAAA (IPv6): 2606:4700:3034::6815:4f2e, 2606:4700:3033::ac43:8df0

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: dubl.work has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::6815:4f2e: answers (TCP 443)
    2606:4700:3033::ac43:8df0: 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://dubl.work/ via 2606:4700:3034::6815:4f2e -> HTTP 302, certificate: valid
    https://late-frog-e0c5.cloudflareaccess.com/cdn-cgi/access/login/dubl.work?kid=ad2d745cad1e9056ded7ceddc063eca2d6eb9352ca6e554c97716d241e3373d4&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImIxYzg2ZmE3YjBjNzViMTcwZjA0NDg5NDY0YWYzMDQ5NDFmN2RiMjNmZTVkZGY2ODE0MzFhNGE0ZjJjODE5MmUifQ.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.p3hZEx6iEBiRUBNaIUCqB711_SwM6XMVXFrirGzwWXrLNJO1RSKo1_F375dbaM_AEx16-7xLKY-oUWnjjgTca2YgOZ54eUfF7M66zQEd3ybEI3qHLqK_MZgSUjiRAEoIbI2BMB67NehrP9GFAtnLSsRyFyHTVc7d9mNZk29mHYmuvmByUb_PFNAMYxS88uBicps4ZCvOVAXFJ6dz1FPYXTQ6fDbB1UBMTftgChNGFD6ovTlzQQPIdKLPRg_4Jw0Nwx7ks9SpZ-JGLVb6CDNYOqvtKaGEqSvhOGPXEhBRMz--RWY1lLZvoZ0UfH0ofQ7wrdc1c7mTzYkD-4qqTGpWUA&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/SSrHyfIEH8

Permanent link: aaaa.bot/r/SSrHyfIEH8 · How we measure

Checked 2026-11-02 10:35:00 UTC. Full DNS report: dns.pizza/domain/dubl.work · JSON: /api/v1/dubl.work