Yes — xn--sdkurve-n2a.net has IPv6.

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

Measured 2026-11-02 19:38 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check xn--sdkurve-n2a.net now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 xn--sdkurve-n2a.net has an AAAA record and answers on it. ✓ 2001:41d0:301:1::29 answers · 443	yes
www over IPv6 www.xn--sdkurve-n2a.net has an AAAA record and answers on it. ✓ 2001:41d0:301:1::29 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx1.mail.ovh.net ✗mx2.mail.ovh.net ✗mx3.mail.ovh.net ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns103.ovh.net ✓dns103.ovh.net ✓	yes

First measured 2026-11-02; last confirmed 2026-11-02.

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

https://xn--sdkurve-n2a.net/ via 2001:41d0:301:1::29 → 200

works

What's keeping xn--sdkurve-n2a.net from an A

Mail servers without IPv6
mx1.mail.ovh.net, mx2.mail.ovh.net, mx3.mail.ovh.net 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.

Check again

xn--sdkurve-n2a.net Has IPv6

A (IPv4)	145.239.222.45
AAAA (IPv6)	2001:41d0:301:1::29

www.xn--sdkurve-n2a.net Has IPv6

A (IPv4)	145.239.222.45
AAAA (IPv6)	2001:41d0:301:1::29

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: xn--sdkurve-n2a.net
Measured 2026-11-02 19:38:24 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    145.239.222.45
AAAA (IPv6): 2001:41d0:301:1::29
www AAAA:    2001:41d0:301:1::29

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: xn--sdkurve-n2a.net has an AAAA record and answers on it.
    2001:41d0:301:1::29: answers (TCP 443)
- www over IPv6: www.xn--sdkurve-n2a.net has an AAAA record and answers on it.
    2001:41d0:301:1::29: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers 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://xn--sdkurve-n2a.net/ via 2001:41d0:301:1::29 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/zvp467ZLCE

Permanent link: aaaa.bot/r/zvp467ZLCE · How we measure

Checked 2026-11-02 19:38:24 UTC. Full DNS report: dns.pizza/domain/xn--sdkurve-n2a.net · Age, certificate and blocklists: how.is/xn--sdkurve-n2a.net · JSON: /api/v1/xn--sdkurve-n2a.net