Yes — heroku.com has IPv6.

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

heroku.com  IPv6 ready

A (IPv4)192.0.66.110
AAAA (IPv6)2a04:fa87:fffd::c000:426e

www.heroku.com  IPv6 ready

Alias ofheroku.go-vip.net
A (IPv4)192.0.66.110
AAAA (IPv6)2a04:fa87:fffd::c000:426e

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Checked 2026-10-30 00:13:20 UTC. Full DNS report: dns.pizza/domain/heroku.com · JSON: /api/v1/heroku.com