PeeringDB is a freely available, user-maintained, database of networks, and the go-to location for interconnection data.

Almost one third of the critical default-free zone ASNs at least partially register their interconnection options in the database.

The database shows the colocation facilities in which networks have a presence and the IXPs they peer at.

Traditionally a list of potential peering partners would have been maintained by the host Internet exchange point or colocation centre, but these lists lacked important information such as peering policies and were difficult to keep up-to-date.

Users are welcome to request features and report bugs by opening an issue on GitHub.

Membership[6] depends on two factors: an active PeeringDB.com account and an individual representative who is subscribed to the governance mailing list.