Yes — sigli.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 sigli.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:f219:5121:2eda:ac7d:c9af answers · 443✓ 2a02:4780:84:4033:a9fb:3dfd:f613:43ba answers · 443	yes
www over IPv6 www.sigli.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:21:b616:8ea0:2791:e9ff:3631 answers · 443✓ 2a02:4780:1d:5736:51a4:103:e289:d1cc answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mx1.hostinger.com ✓mx2.hostinger.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. atlas.dns-parking.com ✓hyperion.dns-parking.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://sigli.app/ via 2a02:4780:84:f219:5121:2eda:ac7d:c9af → 200

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/sigli.app.svg)](https://aaaa.bot/sigli.app)

Check again

sigli.app Has IPv6

A (IPv4)	2.57.91.115 84.32.84.242
AAAA (IPv6)	2a02:4780:84:f219:5121:2eda:ac7d:c9af 2a02:4780:84:4033:a9fb:3dfd:f613:43ba

www.sigli.app Has IPv6

Alias of	www.sigli.app.cdn.hstgr.net
A (IPv4)	2.57.91.23 88.222.222.165
AAAA (IPv6)	2a02:4780:21:b616:8ea0:2791:e9ff:3631 2a02:4780:1d:5736:51a4:103:e289:d1cc

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: sigli.app
Measured 2026-11-05 16:09:27 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    2.57.91.115, 84.32.84.242
AAAA (IPv6): 2a02:4780:84:f219:5121:2eda:ac7d:c9af, 2a02:4780:84:4033:a9fb:3dfd:f613:43ba
www AAAA:    2a02:4780:21:b616:8ea0:2791:e9ff:3631, 2a02:4780:1d:5736:51a4:103:e289:d1cc

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: sigli.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:f219:5121:2eda:ac7d:c9af: answers (TCP 443)
    2a02:4780:84:4033:a9fb:3dfd:f613:43ba: answers (TCP 443)
- www over IPv6: www.sigli.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:21:b616:8ea0:2791:e9ff:3631: answers (TCP 443)
    2a02:4780:1d:5736:51a4:103:e289:d1cc: 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): Loads over IPv6 with a valid certificate: HTTP 200.
    https://sigli.app/ via 2a02:4780:84:f219:5121:2eda:ac7d:c9af -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/ZPpgZilWbp

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

Checked 2026-11-05 16:09:27 UTC. Full DNS report: dns.pizza/domain/sigli.app · Age, certificate and blocklists: how.is/sigli.app · JSON: /api/v1/sigli.app