Yes — postvanta.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 postvanta.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:55ec:eba7:b4c5:fe3f:f595 answers · 443✓ 2a02:4780:84:3423:1cb4:48d7:e5f1:c387 answers · 443	yes
www over IPv6 www.postvanta.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:1e:a08f:dfac:1fb5:affb:5d29 answers · 443✓ 2a02:4780:21:4885:7be:2903:f1d1:c371 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. byte.dns-parking.com ✓pixel.dns-parking.com ✓	yes

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

https://postvanta.app/ via 2a02:4780:84:55ec:eba7:b4c5:fe3f:f595 → 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/postvanta.app.svg)](https://aaaa.bot/postvanta.app)

Check again

postvanta.app Has IPv6

A (IPv4)	84.32.84.117 88.222.222.49
AAAA (IPv6)	2a02:4780:84:55ec:eba7:b4c5:fe3f:f595 2a02:4780:84:3423:1cb4:48d7:e5f1:c387

www.postvanta.app Has IPv6

Alias of	www.postvanta.app.cdn.hstgr.net
A (IPv4)	84.32.84.194 2.57.91.68
AAAA (IPv6)	2a02:4780:1e:a08f:dfac:1fb5:affb:5d29 2a02:4780:21:4885:7be:2903:f1d1:c371

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: postvanta.app
Measured 2026-11-02 18:47:38 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    84.32.84.117, 88.222.222.49
AAAA (IPv6): 2a02:4780:84:55ec:eba7:b4c5:fe3f:f595, 2a02:4780:84:3423:1cb4:48d7:e5f1:c387
www AAAA:    2a02:4780:1e:a08f:dfac:1fb5:affb:5d29, 2a02:4780:21:4885:7be:2903:f1d1:c371

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: postvanta.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:55ec:eba7:b4c5:fe3f:f595: answers (TCP 443)
    2a02:4780:84:3423:1cb4:48d7:e5f1:c387: answers (TCP 443)
- www over IPv6: www.postvanta.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:1e:a08f:dfac:1fb5:affb:5d29: answers (TCP 443)
    2a02:4780:21:4885:7be:2903:f1d1:c371: 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://postvanta.app/ via 2a02:4780:84:55ec:eba7:b4c5:fe3f:f595 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/Fo9paPs6-n

Permanent link: aaaa.bot/r/Fo9paPs6-n · How we measure

Checked 2026-11-02 18:47:38 UTC. Full DNS report: dns.pizza/domain/postvanta.app · Age, certificate and blocklists: how.is/postvanta.app · JSON: /api/v1/postvanta.app