Geographic Locality II

Addresses from WHOIS queries
                    Registrant:
                    CAIDA (CAIDA-DOM)
                       UC, San Diego
                       La Jolla, CA 92093
                       US

The registration address is often not the service address
Offices and POPs not co-located
No notion of scale
A global ISP will have a single address

Blood, sweat, and tears
Laboriously collecting location information by hand