Very rusty memory cells on this, but I think the mileage is 0.1 * sqrt ((delta-V)^2 + (delta-H)^2)). That's assuming same LATA, IIRC. Pete Templin Senior Staff Engineer TexLink Communications (210) 892-4183 pete.templin@texlink.com -----Original Message----- From: network-nanog@gwi.net [mailto:network-nanog@gwi.net] Sent: Monday, September 29, 2003 12:06 PM To: nanog@merit.edu Cc: fkittred@gwi.net Subject: Converting from telco Major-V, Major-H coordinates to Lat Long Any ideas on how to convert from telco "Major-V, Major-H" coordinates to latitude and longitude? Alternately, does anyone have a table of mapping CLLI codes to latitude and longitude? I am trying to programatically figure out the air distance between any two Verizon COs. regards, fletcher -- Fletcher Kittredge Great Works Internet 8 Pomerleau St. Biddeford, ME 04005-9457