Yes — tatisweb.online has IPv6.

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

IPv6 readiness

Works over IPv6, with gaps: its mail servers lack IPv6; its nameservers lack IPv6.

Website over IPv6 tatisweb.online has an AAAA record and answers on it. ✓ 2a00:f940:2:2:1:1:0:275 answers · 443	yes
www over IPv6 www.tatisweb.online has an AAAA record and answers on it. ✓ 2a00:f940:2:2:1:1:0:275 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx2.hosting.reg.ru ✗mx1.hosting.reg.ru ✗	no
Nameservers have IPv6 No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS. ns1.hosting.reg.ru ✗ns2.hosting.reg.ru ✗	no

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

https://tatisweb.online/ via 2a00:f940:2:2:1:1:0:275 → 200

works

What's keeping tatisweb.online from an A

Mail servers without IPv6
mx2.hosting.reg.ru, mx1.hosting.reg.ru have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.
Nameservers without IPv6
ns1.hosting.reg.ru, ns2.hosting.reg.ru all have no AAAA record, so a resolver that only speaks IPv6 can't look your domain up. Most DNS providers offer IPv6 nameservers; ask yours, or move DNS to one that does.

Check again

tatisweb.online Has IPv6

A (IPv4)	31.31.196.49
AAAA (IPv6)	2a00:f940:2:2:1:1:0:275

www.tatisweb.online Has IPv6

A (IPv4)	31.31.196.49
AAAA (IPv6)	2a00:f940:2:2:1:1:0:275

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: tatisweb.online
Measured 2026-11-06 12:13:49 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    31.31.196.49
AAAA (IPv6): 2a00:f940:2:2:1:1:0:275
www AAAA:    2a00:f940:2:2:1:1:0:275

Readiness grade C: Works over IPv6, with gaps: its mail servers lack IPv6; its nameservers lack IPv6.
- Website over IPv6: tatisweb.online has an AAAA record and answers on it.
    2a00:f940:2:2:1:1:0:275: answers (TCP 443)
- www over IPv6: www.tatisweb.online has an AAAA record and answers on it.
    2a00:f940:2:2:1:1:0:275: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.

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://tatisweb.online/ via 2a00:f940:2:2:1:1:0:275 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/xRqLsvMkuy

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

Checked 2026-11-06 12:13:49 UTC. Full DNS report: dns.pizza/domain/tatisweb.online · Age, certificate and blocklists: how.is/tatisweb.online · JSON: /api/v1/tatisweb.online