Comment by compumike

Check out this map: https://api.phillymesh.net/map for live data from the Philadelphia area.

The edges drawn are between nodes that have been able to hear each other in the last 24 hours, based on observed traceroute packets.

(Even then, it’s only a subset of the actually-connected nodes: the map only shows nodes that have published their position on the public channel, and have set a flag that their data is okay to uplink to a server over MQTT.)