Yes — xn--rstereimannheim-8sb.online has IPv6.

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

This is a saved measurement from 2026-10-30 21:02 UTC. Check xn--rstereimannheim-8sb.online live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 xn--rstereimannheim-8sb.online has an AAAA record and answers on it. ✓ 2a01:238:20a:202:1087:: answers · 443	yes
www over IPv6 www.xn--rstereimannheim-8sb.online has an AAAA record and answers on it. ✓ 2a01:238:20a:202:1087:: answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. smtpin.rzone.de ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. shades10.rzone.de ✓docks16.rzone.de ✓	yes

HTTPS over IPv6 · not part of the grade yet
xn--rstereimannheim-8sb.online didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).

https://xn--rstereimannheim-8sb.online/ via 2a01:238:20a:202:1087:: · ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/xn--rstereimannheim-8sb.online.svg)](https://aaaa.bot/xn--rstereimannheim-8sb.online)

Check again

xn--rstereimannheim-8sb.online Has IPv6

A (IPv4)	81.169.145.87
AAAA (IPv6)	2a01:238:20a:202:1087::

www.xn--rstereimannheim-8sb.online Has IPv6

Alias of	xn--rstereimannheim-8sb.online
A (IPv4)	81.169.145.87
AAAA (IPv6)	2a01:238:20a:202:1087::

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--rstereimannheim-8sb.online
Measured 2026-10-30 21:02:31 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    81.169.145.87
AAAA (IPv6): 2a01:238:20a:202:1087::
www AAAA:    2a01:238:20a:202:1087::

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: xn--rstereimannheim-8sb.online has an AAAA record and answers on it.
    2a01:238:20a:202:1087::: answers (TCP 443)
- www over IPv6: www.xn--rstereimannheim-8sb.online has an AAAA record and answers on it.
    2a01:238:20a:202:1087::: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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): xn--rstereimannheim-8sb.online didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).
    https://xn--rstereimannheim-8sb.online/ via 2a01:238:20a:202:1087:: (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/GOVPQinZ7I

Permanent link: aaaa.bot/r/GOVPQinZ7I · How we measure

Checked 2026-10-30 21:02:31 UTC. Full DNS report: dns.pizza/domain/xn--rstereimannheim-8sb.online · JSON: /api/v1/xn--rstereimannheim-8sb.online