Yes — concreservbr.online has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 concreservbr.online has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:25d9:8e72:1efd:9920:5cfe answers · 443✓ 2a02:4780:84:5bd3:4498:2793:bcf4:6c7 answers · 443	yes
www over IPv6 www.concreservbr.online has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:21:fd4a:ab8f:2584:6918:92f1 answers · 443✓ 2a02:4780:1e:b8c2:c148:514c:4c31:c7fc 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. pixel.dns-parking.com ✓byte.dns-parking.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://concreservbr.online/ via 2a02:4780:84:25d9:8e72:1efd:9920:5cfe → 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/concreservbr.online.svg)](https://aaaa.bot/concreservbr.online)

Check again

concreservbr.online Has IPv6

A (IPv4)	88.222.222.244 2.57.91.255
AAAA (IPv6)	2a02:4780:84:25d9:8e72:1efd:9920:5cfe 2a02:4780:84:5bd3:4498:2793:bcf4:6c7

www.concreservbr.online Has IPv6

Alias of	www.concreservbr.online.cdn.hstgr.net
A (IPv4)	195.35.60.91 212.1.212.188
AAAA (IPv6)	2a02:4780:21:fd4a:ab8f:2584:6918:92f1 2a02:4780:1e:b8c2:c148:514c:4c31:c7fc

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: concreservbr.online
Measured 2026-11-09 07:13:06 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    88.222.222.244, 2.57.91.255
AAAA (IPv6): 2a02:4780:84:25d9:8e72:1efd:9920:5cfe, 2a02:4780:84:5bd3:4498:2793:bcf4:6c7
www AAAA:    2a02:4780:21:fd4a:ab8f:2584:6918:92f1, 2a02:4780:1e:b8c2:c148:514c:4c31:c7fc

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: concreservbr.online has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:25d9:8e72:1efd:9920:5cfe: answers (TCP 443)
    2a02:4780:84:5bd3:4498:2793:bcf4:6c7: answers (TCP 443)
- www over IPv6: www.concreservbr.online has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:21:fd4a:ab8f:2584:6918:92f1: answers (TCP 443)
    2a02:4780:1e:b8c2:c148:514c:4c31:c7fc: 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: HTTP 200.
    https://concreservbr.online/ via 2a02:4780:84:25d9:8e72:1efd:9920:5cfe -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/x-YyN0Sqkq

Permanent link: aaaa.bot/r/x-YyN0Sqkq · How we measure

Checked 2026-11-09 07:13:06 UTC. Full DNS report: dns.pizza/domain/concreservbr.online · Age, certificate and blocklists: how.is/concreservbr.online · JSON: /api/v1/concreservbr.online