Yes — curbside.express has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: its nameservers lack IPv6.
Website over IPv6
curbside.express has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2a05:d014:179b:c402:a3e2:bc69:9ec5:2e85 answers · 443✓ 2a05:d014:179b:c403:ea21:15cd:48c1:abbd answers · 443✓ 2a05:d014:179b:c403:b6de:1cd0:b81f:3b67 answers · 443✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443– 2a05:d014:179b:c403:f321:e2bb:596b:b1f7 not tested– 2a05:d014:179b:c400:a327:40ee:24cc:6180 not tested– 2406:da1e:214:c901:3a5:448f:b7b7:82e7 not tested– 2600:1f1c:6db:8801:6f53:9fde:4d81:d192 not tested
yes
www over IPv6
www.curbside.express has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2a05:d014:179b:c402:a3e2:bc69:9ec5:2e85 answers · 443✓ 2a05:d014:179b:c403:ea21:15cd:48c1:abbd answers · 443✓ 2a05:d014:179b:c403:b6de:1cd0:b81f:3b67 answers · 443✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443– 2a05:d014:179b:c403:f321:e2bb:596b:b1f7 not tested– 2a05:d014:179b:c400:a327:40ee:24cc:6180 not tested– 2406:da1e:214:c901:3a5:448f:b7b7:82e7 not tested– 2600:1f1c:6db:8801:6f53:9fde:4d81:d192 not tested
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
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
ns1.dns-redirect.com ✗ns2.dns-redirect.com ✗
no
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.
https://curbside.express/ via 2a05:d014:179b:c402:a3e2:bc69:9ec5:2e85 → 301https://expireddomains.com/domain/curbside.express?utm_source=redi via 2606:4700:20::681a:f7a → 403
works
 Which outside scripts, fonts, payments or chat curbside.express loads from have no IPv6.
 Load curbside.express over IPv6 from up to six other places — a second opinion.

What's keeping curbside.express from an A

  1. Nameservers without IPv6
    ns1.dns-redirect.com, ns2.dns-redirect.com 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

curbside.express  Has IPv6

A (IPv4)5.161.230.87
76.223.91.20
46.62.237.138
5.161.47.86
5.78.156.59
195.201.128.179
AAAA (IPv6)2a05:d014:179b:c402:a3e2:bc69:9ec5:2e85
2a05:d014:179b:c403:ea21:15cd:48c1:abbd
2a05:d014:179b:c403:b6de:1cd0:b81f:3b67
2a05:d018:1d22:801:a216:a799:8c87:df21
2a05:d014:179b:c403:f321:e2bb:596b:b1f7
2a05:d014:179b:c400:a327:40ee:24cc:6180
2406:da1e:214:c901:3a5:448f:b7b7:82e7
2600:1f1c:6db:8801:6f53:9fde:4d81:d192

www.curbside.express  Has IPv6

A (IPv4)195.201.128.179
5.161.230.87
46.62.237.138
76.223.91.20
5.78.156.59
5.161.47.86
AAAA (IPv6)2a05:d014:179b:c402:a3e2:bc69:9ec5:2e85
2a05:d014:179b:c403:ea21:15cd:48c1:abbd
2a05:d014:179b:c403:b6de:1cd0:b81f:3b67
2a05:d018:1d22:801:a216:a799:8c87:df21
2a05:d014:179b:c403:f321:e2bb:596b:b1f7
2a05:d014:179b:c400:a327:40ee:24cc:6180
2406:da1e:214:c901:3a5:448f:b7b7:82e7
2600:1f1c:6db:8801:6f53:9fde:4d81:d192

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

 Permanent link: aaaa.bot/r/zXz2c74FrW · How we measure

Checked 2026-11-06 14:16:40 UTC. Full DNS report: dns.pizza/domain/curbside.express · Age, certificate and blocklists: how.is/curbside.express · JSON: /api/v1/curbside.express