Yes — counter.haus has IPv6.

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

IPv6 readiness

Works over IPv6, with one gap: its nameservers lack IPv6.

Website over IPv6 counter.haus has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2a01:4ff:1f0:dd50::1 answers · 443✓ 2a05:d018:1d22:800:6673:f7c3:558e:5d73 answers · 443✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443✓ 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f answers · 443– 2a05:d014:179b:c400:77ae:c221:8602:72fa not tested– 2600:1f18:6a07:601:6471:b5e4:ef15:3b72 not tested– 2406:da1e:214:c901:49:871:e9e1:eb92 not tested– 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e not tested	yes
www over IPv6 www.counter.haus has 4 IPv6 addresses and answers on every one we tested (4 more not tested). ✓ 2a01:4ff:1f0:dd50::1 answers · 443✓ 2a05:d018:1d22:800:6673:f7c3:558e:5d73 answers · 443✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443✓ 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f answers · 443– 2a05:d014:179b:c400:77ae:c221:8602:72fa not tested– 2600:1f18:6a07:601:6471:b5e4:ef15:3b72 not tested– 2406:da1e:214:c901:49:871:e9e1:eb92 not tested– 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e 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://counter.haus/ via 2a01:4ff:1f0:dd50::1 → 301https://expireddomains.com/domain/counter.haus?utm_source=redi via 2606:4700:20::ac43:4556 → 403

works

What's keeping counter.haus from an A

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

counter.haus Has IPv6

A (IPv4)	76.223.91.20 5.78.156.59 195.201.128.179 5.161.47.86 5.161.230.87 46.62.237.138
AAAA (IPv6)	2a01:4ff:1f0:dd50::1 2a05:d018:1d22:800:6673:f7c3:558e:5d73 2a05:d018:1d22:801:a216:a799:8c87:df21 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f 2a05:d014:179b:c400:77ae:c221:8602:72fa 2600:1f18:6a07:601:6471:b5e4:ef15:3b72 2406:da1e:214:c901:49:871:e9e1:eb92 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e

www.counter.haus Has IPv6

A (IPv4)	76.223.91.20 5.78.156.59 195.201.128.179 5.161.47.86 5.161.230.87 46.62.237.138
AAAA (IPv6)	2a01:4ff:1f0:dd50::1 2a05:d018:1d22:800:6673:f7c3:558e:5d73 2a05:d018:1d22:801:a216:a799:8c87:df21 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f 2a05:d014:179b:c400:77ae:c221:8602:72fa 2600:1f18:6a07:601:6471:b5e4:ef15:3b72 2406:da1e:214:c901:49:871:e9e1:eb92 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e

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: counter.haus
Measured 2026-11-04 16:15:43 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    76.223.91.20, 5.78.156.59, 195.201.128.179, 5.161.47.86, 5.161.230.87, 46.62.237.138
AAAA (IPv6): 2a01:4ff:1f0:dd50::1, 2a05:d018:1d22:800:6673:f7c3:558e:5d73, 2a05:d018:1d22:801:a216:a799:8c87:df21, 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f, 2a05:d014:179b:c400:77ae:c221:8602:72fa, 2600:1f18:6a07:601:6471:b5e4:ef15:3b72, 2406:da1e:214:c901:49:871:e9e1:eb92, 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e
www AAAA:    2a01:4ff:1f0:dd50::1, 2a05:d018:1d22:800:6673:f7c3:558e:5d73, 2a05:d018:1d22:801:a216:a799:8c87:df21, 2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f, 2a05:d014:179b:c400:77ae:c221:8602:72fa, 2600:1f18:6a07:601:6471:b5e4:ef15:3b72, 2406:da1e:214:c901:49:871:e9e1:eb92, 2600:1f1c:6db:8801:abfd:f5bb:c6df:169e

Readiness grade B: Works over IPv6, with one gap: its nameservers lack IPv6.
- Website over IPv6: counter.haus has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2a01:4ff:1f0:dd50::1: answers (TCP 443)
    2a05:d018:1d22:800:6673:f7c3:558e:5d73: answers (TCP 443)
    2a05:d018:1d22:801:a216:a799:8c87:df21: answers (TCP 443)
    2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f: answers (TCP 443)
    2a05:d014:179b:c400:77ae:c221:8602:72fa: not tested
    2600:1f18:6a07:601:6471:b5e4:ef15:3b72: not tested
    2406:da1e:214:c901:49:871:e9e1:eb92: not tested
    2600:1f1c:6db:8801:abfd:f5bb:c6df:169e: not tested
- www over IPv6: www.counter.haus has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
    2a01:4ff:1f0:dd50::1: answers (TCP 443)
    2a05:d018:1d22:800:6673:f7c3:558e:5d73: answers (TCP 443)
    2a05:d018:1d22:801:a216:a799:8c87:df21: answers (TCP 443)
    2a05:d014:179b:c400:e41e:4bf4:e77a:cf6f: answers (TCP 443)
    2a05:d014:179b:c400:77ae:c221:8602:72fa: not tested
    2600:1f18:6a07:601:6471:b5e4:ef15:3b72: not tested
    2406:da1e:214:c901:49:871:e9e1:eb92: not tested
    2600:1f1c:6db:8801:abfd:f5bb:c6df:169e: not tested
- 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: 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 after 1 redirect: HTTP 403.
    https://counter.haus/ via 2a01:4ff:1f0:dd50::1 -> HTTP 301, certificate: valid
    https://expireddomains.com/domain/counter.haus?utm_source=redi via 2606:4700:20::ac43:4556 -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/y1J3myXOZH

Permanent link: aaaa.bot/r/y1J3myXOZH · How we measure

Checked 2026-11-04 16:15:43 UTC. Full DNS report: dns.pizza/domain/counter.haus · Age, certificate and blocklists: how.is/counter.haus · JSON: /api/v1/counter.haus