Go to TTN Mapper they have access to the data of who forwards packet, get the EUI and then from the https://mapper.packetbroker.net/api/v2/gateways you can look up the EUI and map it.
Go to TTN Mapper they have access to the data of who forwards packet, get the EUI and then from the https://mapper.packetbroker.net/api/v2/gateways you can look up the EUI and map it.