No — relaysim.app is IPv4 only.

Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.

This is a saved measurement from 2026-11-05 02:07 UTC. Check relaysim.app live now

D
IPv6 readiness
The website has no IPv6.
Website over IPv6
relaysim.app has no AAAA record.		no
www over IPv6
www.relaysim.app has an AAAA record and answers on it.
✓ 2620:0:890::100 answers · 443
yes
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has no AAAA record.		no
Nameservers have IPv6
3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns-50-b.gandi.net ✓ns-248-a.gandi.net ✓ns-22-c.gandi.net ✓
yes

What's keeping relaysim.app from an A

  1. Give relaysim.app an IPv6 address
    Ask your hosting provider for the site's IPv6 address (or the hostname to point at), then publish it as an AAAA record. If your host doesn't offer IPv6, a proxy that does can sit in front. How to add an AAAA record
  2. Mail servers without IPv6
    Your domain's mail goes to its own address, which has no AAAA record.

Check again

relaysim.app  IPv4 only

A (IPv4)199.36.158.100
AAAA (IPv6)none

www.relaysim.app  Has IPv6

Alias oflabs-relay-app.web.app
A (IPv4)199.36.158.100
AAAA (IPv6)2620:0:890::100

What this means

Visitors on IPv6-only networks (many mobile carriers) can still reach it, but only through a translator their carrier runs (NAT64). The site itself has no IPv6 address — and you can't make one up from the IPv4. Why some hosts don't offer it

Copy the evidence — a citation-ready record of this measurement

 Permanent link: aaaa.bot/r/gT9KWk-5sJ · How we measure

Checked 2026-11-05 02:07:38 UTC. Full DNS report: dns.pizza/domain/relaysim.app · Age, certificate and blocklists: how.is/relaysim.app · JSON: /api/v1/relaysim.app