
David Mark @DavidMarkDC
@HowardMortman @paulschwartzman @ALEC_states D.C. playing catchup of sorts to the suburbs. Maryland's 240 area code first appeared in 1997, as an addition to 301. Takes in Montgomery and Prince George's counties, out to the Eastern Shore. In Northern Virginia, area code 571 started in 2000, as an overlay plan with 703. — PolitiTweet.org