Yes — sigmahub.site has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 sigmahub.site has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:f097:f504:8f08:71c7:a033 answers · 443✓ 2a02:4780:84:7c67:9438:b83b:a1f0:78f2 answers · 443	yes
www over IPv6 www.sigmahub.site has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:1e:663b:a49c:1305:a319:40c2 answers · 443✓ 2a02:4780:1d:493e:3c1c:7d27:c2ee:2f34 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. aster.dns-parking.com ✓helios.dns-parking.com ✓	yes

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

https://sigmahub.site/ via 2a02:4780:84:f097:f504:8f08:71c7:a033 → 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/sigmahub.site.svg)](https://aaaa.bot/sigmahub.site)

Check again

sigmahub.site Has IPv6

A (IPv4)	84.32.84.96 2.57.91.173
AAAA (IPv6)	2a02:4780:84:f097:f504:8f08:71c7:a033 2a02:4780:84:7c67:9438:b83b:a1f0:78f2

www.sigmahub.site Has IPv6

Alias of	www.sigmahub.site.cdn.hstgr.net
A (IPv4)	2.57.91.227 84.32.84.50
AAAA (IPv6)	2a02:4780:1e:663b:a49c:1305:a319:40c2 2a02:4780:1d:493e:3c1c:7d27:c2ee:2f34

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: sigmahub.site
Measured 2026-10-30 20:55:01 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    84.32.84.96, 2.57.91.173
AAAA (IPv6): 2a02:4780:84:f097:f504:8f08:71c7:a033, 2a02:4780:84:7c67:9438:b83b:a1f0:78f2
www AAAA:    2a02:4780:1e:663b:a49c:1305:a319:40c2, 2a02:4780:1d:493e:3c1c:7d27:c2ee:2f34

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: sigmahub.site has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:f097:f504:8f08:71c7:a033: answers (TCP 443)
    2a02:4780:84:7c67:9438:b83b:a1f0:78f2: answers (TCP 443)
- www over IPv6: www.sigmahub.site has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:1e:663b:a49c:1305:a319:40c2: answers (TCP 443)
    2a02:4780:1d:493e:3c1c:7d27:c2ee:2f34: 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://sigmahub.site/ via 2a02:4780:84:f097:f504:8f08:71c7:a033 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/KY4iEpeo2m

Permanent link: aaaa.bot/r/KY4iEpeo2m · How we measure

Checked 2026-10-30 20:55:01 UTC. Full DNS report: dns.pizza/domain/sigmahub.site · JSON: /api/v1/sigmahub.site