Yes — odzadu.sk has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 odzadu.sk has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::681a:be6 answers · 443✓ 2606:4700:20::681a:ae6 answers · 443✓ 2606:4700:20::ac43:45e9 answers · 443	yes
www over IPv6 www.odzadu.sk has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::681a:be6 answers · 443✓ 2606:4700:20::681a:ae6 answers · 443✓ 2606:4700:20::ac43:45e9 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mailin.mx-hub.cz ✓mailin.mx-hub.eu ✓mailin.mx-hub.net ✓mailin.mx-hub.sk ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. adam.ns.cloudflare.com ✓zara.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://odzadu.sk/ via 2606:4700:20::681a:be6 → 301https://www.odzadu.sk/ via 2606:4700:20::681a:be6 → 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/odzadu.sk.svg)](https://aaaa.bot/odzadu.sk)

Check again

odzadu.sk Has IPv6

A (IPv4)	172.67.69.233 104.26.11.230 104.26.10.230
AAAA (IPv6)	2606:4700:20::681a:be6 2606:4700:20::681a:ae6 2606:4700:20::ac43:45e9

www.odzadu.sk Has IPv6

A (IPv4)	104.26.10.230 172.67.69.233 104.26.11.230
AAAA (IPv6)	2606:4700:20::681a:be6 2606:4700:20::681a:ae6 2606:4700:20::ac43:45e9

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: odzadu.sk
Measured 2026-11-15 16:12:16 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.69.233, 104.26.11.230, 104.26.10.230
AAAA (IPv6): 2606:4700:20::681a:be6, 2606:4700:20::681a:ae6, 2606:4700:20::ac43:45e9
www AAAA:    2606:4700:20::681a:be6, 2606:4700:20::681a:ae6, 2606:4700:20::ac43:45e9

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: odzadu.sk has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::681a:be6: answers (TCP 443)
    2606:4700:20::681a:ae6: answers (TCP 443)
    2606:4700:20::ac43:45e9: answers (TCP 443)
- www over IPv6: www.odzadu.sk has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::681a:be6: answers (TCP 443)
    2606:4700:20::681a:ae6: answers (TCP 443)
    2606:4700:20::ac43:45e9: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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://odzadu.sk/ via 2606:4700:20::681a:be6 -> HTTP 301, certificate: valid
    https://www.odzadu.sk/ via 2606:4700:20::681a:be6 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/A1tNV7akj7

Permanent link: aaaa.bot/r/A1tNV7akj7 · How we measure

Checked 2026-11-15 16:12:16 UTC. Full DNS report: dns.pizza/domain/odzadu.sk · Age, certificate and blocklists: how.is/odzadu.sk · JSON: /api/v1/odzadu.sk