Sadly since I am cheating by using the wap.voicestream.com apn from my blackberry sim, i keep having issues completing speed tests The failure occurs on the upload side, but I am getting average 900kbs with about 175-200 upload from my TM506 tethered to my MacBook Pro using bluetooth.
I am going to switch the data plan on my other SIM to total internet and test again later to provide actual verifiable speed tests.
I actually live in Walnut Creek, but since it's active here I would go so far as to say that it's active in the entire bay area per compass.
I suspect you are right about that.
They have very recently cleaned up a lot of LAC numbering, which seemed to be in constant flux during the 3G buildout. For example, your 2G LAC 218 was recently split into 213+218+227 and boundaries were tweaked a little.
Do you happen to have a phone which will tell you what your 3G LAC is?
AT&T and T-Mobile SF Bay Area+ Cell Sites - with Cell ID labels http://sfocellsites.com/
Over 1,100 AT&T sites in the 9 Bay Area counties + San Benito, Santa Cruz and Monterey counties Now over 1,500 T-Mobile sites in these 12 counties