Yes — smsnct.shop has IPv6.

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

IPv6 readiness

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

Website over IPv6 smsnct.shop has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:b49b answers · 443✓ 2606:4700:3030::6815:3380 answers · 443	yes
www over IPv6 www.smsnct.shop has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:b49b answers · 443✓ 2606:4700:3030::6815:3380 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx2-hosting.jellyfish.systems ✗mx3-hosting.jellyfish.systems ✗mx1-hosting.jellyfish.systems ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. joel.ns.cloudflare.com ✓mona.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://smsnct.shop/ via 2606:4700:3037::ac43:b49b → 302https://smsnct.shop/login via 2606:4700:3037::ac43:b49b → 200

works

What's keeping smsnct.shop from an A

Mail servers without IPv6
mx2-hosting.jellyfish.systems, mx3-hosting.jellyfish.systems, mx1-hosting.jellyfish.systems 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

smsnct.shop Has IPv6

A (IPv4)	104.21.51.128 172.67.180.155
AAAA (IPv6)	2606:4700:3037::ac43:b49b 2606:4700:3030::6815:3380

www.smsnct.shop Has IPv6

A (IPv4)	104.21.51.128 172.67.180.155
AAAA (IPv6)	2606:4700:3037::ac43:b49b 2606:4700:3030::6815:3380

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: smsnct.shop
Measured 2026-11-05 08:18:04 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.51.128, 172.67.180.155
AAAA (IPv6): 2606:4700:3037::ac43:b49b, 2606:4700:3030::6815:3380
www AAAA:    2606:4700:3037::ac43:b49b, 2606:4700:3030::6815:3380

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: smsnct.shop has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:b49b: answers (TCP 443)
    2606:4700:3030::6815:3380: answers (TCP 443)
- www over IPv6: www.smsnct.shop has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:b49b: answers (TCP 443)
    2606:4700:3030::6815:3380: 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 after 1 redirect: HTTP 200.
    https://smsnct.shop/ via 2606:4700:3037::ac43:b49b -> HTTP 302, certificate: valid
    https://smsnct.shop/login via 2606:4700:3037::ac43:b49b -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/U3rVZL-kjj

Permanent link: aaaa.bot/r/U3rVZL-kjj · How we measure

Checked 2026-11-05 08:18:04 UTC. Full DNS report: dns.pizza/domain/smsnct.shop · Age, certificate and blocklists: how.is/smsnct.shop · JSON: /api/v1/smsnct.shop