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NDC: 443

This is the National Destination Code(NDC):443 page list. Its detail is as below.
Area code 443 was first put in service June 1, 1997. In 2012, area code 667 was created as an overlay to area code 443. Currently, the largest city it serves is Baltimore, MD, and it overlaps coverage areas with area codes 410 and 667.
Prefix State Primary city Usage Carrier
(443) 301- Maryland Baltimore Wireless New Cingular Wireless PCS - DC
(443) 302- Maryland Crofton Landline Global Crossing Local Services-md
(443) 303- Maryland Aberdeen Landline Global Crossing Local Services-md
(443) 304- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 305- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 306- Maryland Baltimore Wireless Sprint Spectrum L.p.
(443) 307- Maryland Bel Air Landline Global Crossing Local Services-md
(443) 308- Maryland Baltimore Landline Allegiance Telecom
(443) 309- Maryland Elkton Wireless Sprint Spectrum L.p.
(443) 310- Maryland Baltimore Wireless New Cingular Wireless PCS - DC
(443) 312- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 313- Maryland Fork Landline Global Crossing Local Services-md
(443) 314- Maryland Baltimore Wireless Sprint Spectrum L.p.
(443) 315- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 316- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 317- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 318- Maryland Cockeysville Landline Cavalier Telephone (mid-atlantic)
(443) 319- Maryland Columbia Landline Cavalier Telephone (mid-atlantic)
(443) 320- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 321- Maryland Annapolis Landline Paetec Communications
(443) 322- Maryland Towson Landline Cavalier Telephone Mid-atlantic
(443) 323- Maryland Rhodesdale Landline Cavalier Telephone (mid-atlantic)
(443) 324- Maryland Baltimore Wireless Sprint Spectrum L.p.
(443) 325- Maryland Ellicott City Landline Cavalier Telephone Mid-atlantic
(443) 326- Maryland Baltimore Wireless New Cingular Wireless PCS - DC
(443) 327- Maryland Aberdeen Landline Cavalier Telephone Mid-atlantic
(443) 328- Maryland Sykesville Landline Ctc Communications Corp.
(443) 329- Maryland Jessup Landline Global Crossing Local Services-md
(443) 330- Maryland Baltimore Landline Cavalier Telephone Mid-atlantic
(443) 331- Maryland Taneytown Landline Ctc Communications Corp.
(443) 332- Maryland Crofton Landline Cavalier Telephone Mid-atlantic
(443) 333- Maryland Annapolis Wireless Leap Wireless Intl DBA Cricket Comm
(443) 334- Maryland Towson Landline Allegiance Telecom
(443) 335- Maryland Brooklyn Landline Xo Maryland
(443) 336- Maryland Annapolis Wireless Sprint Spectrum L.p.
(443) 337- Maryland Sparrows Point Landline Xo Maryland
(443) 338- Maryland Sparks Glencoe Landline Ctc Communications Corp.
(443) 339- Maryland Sherwood Forest Landline Ctc Communications Corp.
(443) 340- Maryland Westminster Wireless Cellco Partnership DBA Verizon Wireless
(443) 341- Maryland Baltimore Landline Level 3 Communications
(443) 342- Maryland Solomons Landline Ctc Communications Corp.
(443) 343- Maryland Millersville Landline Teleport Communications America
(443) 344- Maryland Severna Park Landline Core Communications
(443) 345- Maryland Aberdeen Landline Level 3 Communications
(443) 346- Maryland Severna Park Landline Xo Maryland
(443) 347- Maryland Cardiff Landline Ctc Communications Corp.
(443) 348- Maryland Baltimore Landline Teleport Communications America
(443) 349- Maryland Westminster Landline Core Communications
(443) 350- Maryland Elkton Wireless Cellco Partnership DBA Verizon Wireless
(443) 351- Maryland Columbia Landline Us Lec Of Maryland
(443) 352- Maryland Baltimore Landline AT&T Local
(443) 353- Maryland Cockeysville Landline Verizon Maryland
(443) 354- Maryland Baltimore Landline Level 3 Communications
(443) 355- Maryland Baltimore Landline Level 3 Communications
(443) 356- Maryland Bel Air Landline Level 3 Communications
(443) 357- Maryland Pikesville Landline Verizon Maryland
(443) 358- Maryland Salisbury Landline Ymax Communications Corp.
(443) 359- Maryland Delmar Wireless Cellco Partnership DBA Verizon Wireless
(443) 360- Maryland Aberdeen Landline Teleport Communications America
(443) 361- Maryland Sykesville Landline Core Communications
(443) 362- Maryland Easton Wireless Omnipoint Communications Cap Operations
(443) 363- Maryland Severn Landline Xo Maryland
(443) 364- Maryland Baltimore Landline Teleport Communications America
(443) 365- Maryland Salisbury Wireless Omnipoint Communications Cap Operations
(443) 366- Maryland Salisbury Wireless Sprint Spectrum L.p.
(443) 367- Maryland Columbia Landline Verizon Maryland
(443) 368- Maryland Westminster Landline Core Communications
(443) 369- Maryland Bel Air Landline Core Communications
(443) 370- Maryland Annapolis Landline New Cingular Wireless PCS - DC
(443) 371- Maryland Bel Air Landline Broadwing Communications. LLC
(443) 372- Maryland Edgewood Landline Us Lec Of Maryland
(443) 373- Maryland Ocean City Wireless Sprint Spectrum L.p.
(443) 374- Maryland Aberdeen Landline Cavalier Telephone (mid-atlantic)
(443) 375- Maryland Hampstead Wireless Sprint Spectrum L.p.
(443) 376- Maryland Baltimore Landline Teleport Communications America
(443) 377- Maryland Towson Wireless Cellco Partnership DBA Verizon Wireless
(443) 378- Maryland Baltimore Wireless Sprint Spectrum L.p.
(443) 379- Maryland Pikesville Landline Comcast Phone Of Northern Maryland
(443) 380- Maryland Baltimore Landline Level 3 Communications
(443) 381- Maryland Reisterstown Landline Xo Maryland
(443) 382- Maryland Cambridge Landline Core Communications
(443) 383- Maryland Westminster Landline Ctc Communications Corp.
(443) 384- Maryland Parkville Landline Cavalier Telephone Mid-atlantic
(443) 385- Maryland Easton Landline Core Communications
(443) 386- Maryland Baltimore Wireless Cellco Partnership DBA Verizon Wireless
(443) 387- Maryland Pocomoke Landline Core Communications
(443) 388- Maryland Baltimore Wireless Cellco Partnership DBA Verizon Wireless
(443) 389- Maryland Salisbury Landline Core Communications
(443) 390- Maryland Churchville Landline Global Crossing Local Services-md
(443) 391- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 392- Maryland Baltimore Landline AT&T Local
(443) 393- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 394- Maryland Pikesville Landline Verizon Maryland
(443) 395- Maryland Aberdeen Landline Verizon Maryland
(443) 396- Maryland Odenton Landline Global Crossing Local Services-md
(443) 397- Maryland Salisbury Wireless Cellco Partnership DBA Verizon Wireless
(443) 398- Maryland Sykesville Wireless Sprint Spectrum L.p.
(443) 399- Maryland Baltimore Landline Global Crossing Local Services-md
(443) 400- Maryland Baltimore Landline Xo Maryland
(443) 401- Maryland Baltimore Wireless Cellco Partnership DBA Verizon Wireless