Yes, and even better: the future API will also show gateways of other networks that are connected to Packet Broker and may be available through peering.
For the location you were interested in, the API call would be https://mapper.packetbroker.net/api/v2/gateways?distanceWithin[latitude]=50.938700&distanceWithin[longitude]=6.955204&distanceWithin[distance]=5000
For details on the API, you can load https://mapper.packetbroker.net/api/v2/openapi.json into https://editor.swagger.io/.