NPA RELIEF ACTIVITY
OVERLAY DETAIL

Maryland Flag

OLD NPA
410

OVERLAY NPA
443

TEST #

10D PERMISSIVE

10D MANDATORY

443-999-8378

NONE

06/01/96

NEW CODE

06/01/97

Area Code 443 will overlay 410 on July 1, 1997.

There will be NO permissive dialing period, and all existing area code 410 exchanges will remain in area code 410.