I have a column with US phone numbers (all numerical, 10 digits). I would
like to have the State name in a column right next to the phone number, and
the Time Zone in the next column to the right.

I have the master Area Code, State, Time Zone data in any format needed: one
long string, range, VBA constant...

The obvious solution is to write a VBA that uses the 3 left-most digits and
scans the master area-code table to find a match. The only problem is that my
list of phone numbers has several 10,000 numbers and scanning the master area
code again and again will take hours...

Any advanced idea anyone?

--
MF
Boston