How about:

Datacentre (10 us, 100 kHz)
LAN/WiFi (1 ms, 1 kHz)
Metropolitan (10 ms, 100 Hz)
Regional (30 ms, 33 Hz)
Transcontinental (100 ms, 10 Hz)
Intercontinental (300 ms, 3 Hz)
Satellite (1000 ms, 1 Hz)
Translunar (3000 ms, 0.3 Hz)
Interplanetary (100000 ms, 0.01 Hz)

- Jonathan Morton