Overview of VPN providers that support IPv6

Finding VPN providers that provide real IPv6 support (as opposed to "supporting" it by blackholing traffic) is pretty hard so I decided to write down the ones I know about. The amount of information present depends on the provider's documentation and whether I have tested them myself.
This list does not claim to be complete.

Provider Access method IPv6 egress? Connect via IPv6? IP inside tunnel?1 Port forwarding possible? Last updated
AirVPN OpenVPN / Wireguard Yes
(NAT)
Yes Private Yes Nov 2021 (T)
AzireVPN OpenVPN Yes
(NAT)
No Public No Nov 2021 (T)
OpenVPN ("Public IP" option) Yes No Public Not necessary (Public IP)
Wireguard Yes
(NAT)
No2 Public No
Hide.me OpenVPN / Wireguard Yes
(?)
? ? ? Nov 2021
IVPN Wireguard Yes
(NAT)
No Private No Nov 2021 (T)
Mullvad OpenVPN Yes
(NAT)
? ? Yes Nov 2021
Wireguard Yes
(NAT)
Yes Yes
OVPN.com OpenVPN / Wireguard Yes
(?)
? Public ? Nov 2021
OVPN.to OpenVPN Yes
(NAT)
Yes Private No Oct 2021
Perfect Privacy OpenVPN Yes
(?)
? ? ? Nov 2021

1: This is mainly important for address selection according to RFC3484. If this column says "Private" your OS will prefer IPv4 when connected to the VPN despite presence of an IPv6 address.
2: Supposedly possible via {location}.ipv6.azirevpn.net hostnames, but this did not work. I've been told this is being worked on.