NPA RELIEF ACTIVITY
OVERLAY DETAIL

OLD NPA
303

OVERLAY NPA
720

TEST #

10D PERMISSIVE

10D MANDATORY

(720) 200-0000

02/01/98

06/01/98

NEW CODE

06/01/98

Area Code 720 will overlay 303 on June 1, 1998.

There will be a 4 month permissive dialing period for 10-digit dialing, and all existing area code 303 exchanges will remain in the 303 area code.