Area code 443 was first put in service June 01, 1997. Area code 443 is in USA (Maryland). 1-800-database has 1692 records on file with a phone number in the area code of (443) and 144 comments.
The carriers providing phone numbers in 443 area code are: Allegiance Telecom, AT&T Local, Atx Telecommunications Services, Ltd, Baltimore-washington Telephone (bwt), Bandwidth.com Clec, Broadview Networks, Broadvox-clec, Broadwing Communications. LLC, Cavalier Telephone Mid-atlantic, Cavalier Telephone (mid-atlantic), Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Comcast Phone Of Northern Maryland, Core Communications, Ctc Communications Corp., Global Crossing Local Services-md, Global Naps South, Halo Wireless Services, Leap Wireless Intl DBA Cricket Comm, Level 3 Communications, Lightwave Communications, Local Access LLC, Mci Worldcom Communications, Metro PCS, Neutral Tandem-maryland, New Cingular Wireless PCS - DC, Omnipoint Communications Cap Operations, Omnipoint Communications Enterprises, L.p., Paetec Communications, Peerless Network Of Maryland, Sprint Spectrum L.p., Telcove Operations, Teleport Communications America, Tw Telecom Of Maryland LLC, Us Lec Of Maryland, Vdl DBA Global Telecom Brokers, Verizon Maryland, Xo Maryland, Ymax Communications Corp..
Counties located in area code 443 are: ANNE ARUNDEL, BALTIMORE, BALTIMORE CITY, CALVERT, CAROLINE, CARROLL, CECIL, DORCHESTER, HARFORD, HOWARD, KENT, PRINCE GEORGES, QUEEN ANNES, SOMERSET, TALBOT, WICOMICO, WORCESTER.
Largest city: Baltimore
In service since: 06/01/1997
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