Yes — noback.dev has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 noback.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:93a6 answers · 443✓ 2606:4700:3031::6815:2f7e answers · 443	yes
www over IPv6 www.noback.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:2f7e answers · 443✓ 2606:4700:3030::ac43:93a6 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. elias.ns.cloudflare.com ✓ligia.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://noback.dev/ via 2606:4700:3030::ac43:93a6 → 302https://white-hat-3807.cloudflareaccess.com/cdn-cgi/access/login/noback.dev?kid=2c2ea27db2ed243dc39c9c37127425b1284a7aaac0dc45525c351b3cfc053515&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImFkMmJlZjA2NzZmMjFlMzkyYzc4YWRmMWMzZTE2NTM5YzY0NDQxMDgyYmIxNzRiZjM2OWQ2MTk1NzYwNTgyNzMifQ.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.OFG_yf3RVjwVYLHhhiA6x_Dk9YoIzBG7-qy3PStawt5QyjVUSsBuoj5H-2lhxdbH8Nfnf9m8nBMB1ORYNohCfTQV-z2aHsL-CFdzsx3Ol-IeQkoBKC0-cKuKnPCFqXD-xM60_YDjJqXO89U37MuAkJSI-XVAwP2IvzCCDBF3sMrQ8vTLvNklLjamsFnG_D-8-M6QfYrS4scbteYsIX1Xe3JlQuT5BBbTrQyXCjddpUns_EKn0rSDYyCM3SKyf62sPbvJQpaa-S_VzWWNj0WJ4p2_RCoYhlYqb4-truj_lXNmfOn8kTJ3ogv2Hur2C8aq3qcMs2jqi603bw6bTLh_-g&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/noback.dev.svg)](https://aaaa.bot/noback.dev)

Check again

noback.dev Has IPv6

A (IPv4)	172.67.147.166 104.21.47.126
AAAA (IPv6)	2606:4700:3030::ac43:93a6 2606:4700:3031::6815:2f7e

www.noback.dev Has IPv6

A (IPv4)	104.21.47.126 172.67.147.166
AAAA (IPv6)	2606:4700:3031::6815:2f7e 2606:4700:3030::ac43:93a6

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: noback.dev
Measured 2026-11-04 02:23:35 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.147.166, 104.21.47.126
AAAA (IPv6): 2606:4700:3030::ac43:93a6, 2606:4700:3031::6815:2f7e
www AAAA:    2606:4700:3031::6815:2f7e, 2606:4700:3030::ac43:93a6

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: noback.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:93a6: answers (TCP 443)
    2606:4700:3031::6815:2f7e: answers (TCP 443)
- www over IPv6: www.noback.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:2f7e: answers (TCP 443)
    2606:4700:3030::ac43:93a6: 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://noback.dev/ via 2606:4700:3030::ac43:93a6 -> HTTP 302, certificate: valid
    https://white-hat-3807.cloudflareaccess.com/cdn-cgi/access/login/noback.dev?kid=2c2ea27db2ed243dc39c9c37127425b1284a7aaac0dc45525c351b3cfc053515&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImFkMmJlZjA2NzZmMjFlMzkyYzc4YWRmMWMzZTE2NTM5YzY0NDQxMDgyYmIxNzRiZjM2OWQ2MTk1NzYwNTgyNzMifQ.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.OFG_yf3RVjwVYLHhhiA6x_Dk9YoIzBG7-qy3PStawt5QyjVUSsBuoj5H-2lhxdbH8Nfnf9m8nBMB1ORYNohCfTQV-z2aHsL-CFdzsx3Ol-IeQkoBKC0-cKuKnPCFqXD-xM60_YDjJqXO89U37MuAkJSI-XVAwP2IvzCCDBF3sMrQ8vTLvNklLjamsFnG_D-8-M6QfYrS4scbteYsIX1Xe3JlQuT5BBbTrQyXCjddpUns_EKn0rSDYyCM3SKyf62sPbvJQpaa-S_VzWWNj0WJ4p2_RCoYhlYqb4-truj_lXNmfOn8kTJ3ogv2Hur2C8aq3qcMs2jqi603bw6bTLh_-g&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/_h_PaiHzAz

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

Checked 2026-11-04 02:23:35 UTC. Full DNS report: dns.pizza/domain/noback.dev · Age, certificate and blocklists: how.is/noback.dev · JSON: /api/v1/noback.dev