No — syncnote.app is IPv4 only.

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

D
IPv6 readiness
The website has no IPv6.
Website over IPv6
syncnote.app has no AAAA record.		no
www over IPv6
www.syncnote.app has 3 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:20::681a:9c6 answers · 443✓ 2606:4700:20::681a:8c6 answers · 443✓ 2606:4700:20::ac43:4563 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
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns56.domaincontrol.com ✓ns55.domaincontrol.com ✓
yes

What's keeping syncnote.app from an A

  1. Give syncnote.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

syncnote.app  IPv4 only

A (IPv4)162.159.143.95
172.66.3.91
AAAA (IPv6)none

www.syncnote.app  Has IPv6

Alias ofdomains.rork.app
A (IPv4)104.26.9.198
172.67.69.99
104.26.8.198
AAAA (IPv6)2606:4700:20::681a:9c6
2606:4700:20::681a:8c6
2606:4700:20::ac43:4563

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/RaskDS6Za4 · How we measure

Checked 2026-11-05 00:52:10 UTC. Full DNS report: dns.pizza/domain/syncnote.app · Age, certificate and blocklists: how.is/syncnote.app · JSON: /api/v1/syncnote.app