AdRotate Geo -
ipv4/ipv6, Countries, Cities, DMA codes, States and State ISO (3166-2) codes.

ipstack -
ipv4, Countries, Cities, DMA codes, States and State ISO (3166-2) codes.


MaxMind GeoIP2 -
ipv4/ipv6, Countries, States, State ISO (3166-2) codes, Cities and DMA codes.


CloudFlare -
ipv4/ipv6, Countries.