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Frederick, MD Area Codes: List, Map, and Phone Lookup

The city of Frederick is in the state of Maryland. It has the following active area codes:

240
301

Frederick, MD has the following Exchanges (NXX)

NPA NXX Usage Company Name NXX Introduced Date
240 215 Landline Telcove Operations, Inc. - Md 01/14/2000
240 215 Landline Telcove Operations, Inc. - Md 01/14/2000
240 215 Landline Telcove Operations, Inc. - Md 01/14/2000
240 225 Landline Core Communications, Inc. - Md 06/13/2000
240 225 Landline Core Communications, Inc. - Md 06/13/2000
240 225 Landline Core Communications, Inc. - Md 06/13/2000
301 228 Landline Verizon Maryland, Inc. 07/06/1997
301 228 Landline Verizon Maryland, Inc. 07/06/1997
301 228 Landline Verizon Maryland, Inc. 07/06/1997
240 236 Landline Verizon Maryland, Inc. 06/13/2000
240 236 Landline Verizon Maryland, Inc. 06/13/2000
240 236 Landline Verizon Maryland, Inc. 06/13/2000
240 285 Landline Cellco Partnership Dba Verizon Wireless - Md 06/13/2000
240 285 Landline Cellco Partnership Dba Verizon Wireless - Md 06/13/2000
240 285 Landline Cellco Partnership Dba Verizon Wireless - Md 06/13/2000
301 304 Landline Comcast Phone Of Northern Maryland, Inc. - Md 03/06/2007
301 304 Landline Comcast Phone Of Northern Maryland, Inc. - Md 03/06/2007
301 304 Landline Comcast Phone Of Northern Maryland, Inc. - Md 03/06/2007
301 305 Wireless Sprint Spectrum L.p. 04/15/1996
301 305 Wireless Sprint Spectrum L.p. 04/15/1996
301 305 Wireless Sprint Spectrum L.p. 04/15/1996
240 315 Landline Verizon Maryland, Inc. 08/20/2000
240 315 Landline Verizon Maryland, Inc. 08/20/2000
240 315 Landline Verizon Maryland, Inc. 08/20/2000
240 341 Landline Mci Worldcom Communications, Inc. - Md 02/25/2009
240 341 Landline Mci Worldcom Communications, Inc. - Md 02/25/2009
240 344 Wireless New Cingular Wireless Pcs, Llc - Dc 10/15/2002
240 344 Wireless New Cingular Wireless Pcs, Llc - Dc 10/15/2002
240 344 Wireless New Cingular Wireless Pcs, Llc - Dc 10/15/2002
240 356 Landline Level 3 Communications, Llc - Md 03/03/2001
240 356 Landline Level 3 Communications, Llc - Md 03/03/2001
240 356 Landline Level 3 Communications, Llc - Md 03/03/2001
240 357 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/12/2006
240 357 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/12/2006
240 357 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/12/2006
301 360 Landline Verizon Maryland, Inc. 01/25/1998
301 360 Landline Verizon Maryland, Inc. 01/25/1998
301 360 Landline Verizon Maryland, Inc. 01/25/1998
240 367 Wireless Sprint Spectrum L.p. 10/18/2002
240 367 Wireless Sprint Spectrum L.p. 10/18/2002
240 367 Wireless Sprint Spectrum L.p. 10/18/2002
301 378 Landline Comcast Phone Of Northern Maryland, Inc. - Md 02/20/2007
301 378 Landline Comcast Phone Of Northern Maryland, Inc. - Md 02/20/2007
301 378 Landline Comcast Phone Of Northern Maryland, Inc. - Md 02/20/2007
240 379 Landline Verizon Maryland, Inc. 03/03/2001
240 379 Landline Verizon Maryland, Inc. 03/03/2001
240 379 Landline Verizon Maryland, Inc. 03/03/2001
240 397 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/06/2009
240 397 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/06/2009
240 397 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/06/2009
301 401 Wireless New Cingular Wireless Pcs, Llc - Dc 02/04/1994
301 401 Wireless New Cingular Wireless Pcs, Llc - Dc 02/04/1994
301 401 Wireless New Cingular Wireless Pcs, Llc - Dc 02/04/1994
240 405 Landline Us Lec Of Maryland, Inc. 07/27/2004
240 405 Landline Us Lec Of Maryland, Inc. 07/27/2004
240 405 Landline Us Lec Of Maryland, Inc. 07/27/2004
240 409 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/1999
240 409 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/1999
240 409 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/1999
240 415 Landline Ymax Communications Corp. - Md 12/16/2008
240 415 Landline Ymax Communications Corp. - Md 12/16/2008
240 415 Landline Ymax Communications Corp. - Md 12/16/2008
301 418 Landline Verizon Maryland, Inc. 11/20/2002
301 418 Landline Verizon Maryland, Inc. 11/20/2002
301 418 Landline Verizon Maryland, Inc. 11/20/2002
240 422 Wireless Omnipoint Communications Cap Operations, Llc 05/15/2002
240 422 Wireless Omnipoint Communications Cap Operations, Llc 05/15/2002
240 422 Wireless Omnipoint Communications Cap Operations, Llc 05/15/2002
240 439 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/06/2008
240 439 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/06/2008
240 439 Wireless Cellco Partnership Dba Verizon Wireless - Md 06/06/2008
240 440 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/2009
240 440 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/2009
240 440 Wireless New Cingular Wireless Pcs, Llc - Dc 02/27/2009
240 446 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/09/2001
240 446 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/09/2001
240 446 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/09/2001
240 457 Wireless Cellco Partnership Dba Verizon Wireless - Md 09/04/2008
240 457 Wireless Cellco Partnership Dba Verizon Wireless - Md 09/04/2008
240 457 Wireless Cellco Partnership Dba Verizon Wireless - Md 09/04/2008
301 471 Wireless Cellco Partnership Dba Verizon Wireless - Md 04/15/1996
301 471 Wireless Cellco Partnership Dba Verizon Wireless - Md 04/15/1996
301 471 Wireless Cellco Partnership Dba Verizon Wireless - Md 04/15/1996
301 473 Landline Verizon Maryland, Inc. 02/04/1994
301 473 Landline Verizon Maryland, Inc. 02/04/1994
301 473 Landline Verizon Maryland, Inc. 02/04/1994
301 514 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/01/1996
301 514 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/01/1996
301 514 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/01/1996
301 524 Wireless Sprint Spectrum L.p. 08/14/1998
301 524 Wireless Sprint Spectrum L.p. 08/14/1998
301 524 Wireless Sprint Spectrum L.p. 08/14/1998
240 529 Landline Verizon Maryland, Inc. 10/31/2000
240 529 Landline Verizon Maryland, Inc. 10/31/2000
240 529 Landline Verizon Maryland, Inc. 10/31/2000
240 549 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/17/2016
240 549 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/17/2016
240 549 Wireless Cellco Partnership Dba Verizon Wireless - Md 03/17/2016
240 566 Landline Verizon Maryland, Inc. 06/11/2002
240 566 Landline Verizon Maryland, Inc. 06/11/2002
240 566 Landline Verizon Maryland, Inc. 06/11/2002
240 575 Landline Level 3 Communications, Llc - Md 12/30/2005
240 575 Landline Level 3 Communications, Llc - Md 12/30/2005
240 575 Landline Level 3 Communications, Llc - Md 12/30/2005
240 578 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/08/2011
240 578 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/08/2011
240 578 Wireless Cellco Partnership Dba Verizon Wireless - Md 07/08/2011
240 586 Landline Verizon Maryland, Inc. 12/22/2006
240 586 Landline Verizon Maryland, Inc. 12/22/2006
240 586 Landline Verizon Maryland, Inc. 12/22/2006
301 600 Landline Verizon Maryland, Inc. 07/06/2006
301 600 Landline Verizon Maryland, Inc. 07/06/2006
301 600 Landline Verizon Maryland, Inc. 07/06/2006
301 606 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/04/1994
301 606 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/04/1994
301 606 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/04/1994
240 608 Wireless 365 Wireless, Llc 03/11/2013
240 608 Wireless 365 Wireless, Llc 03/11/2013
240 608 Wireless 365 Wireless, Llc 03/11/2013
301 619 Landline Verizon Maryland, Inc. 02/04/1994
301 619 Landline Verizon Maryland, Inc. 02/04/1994
301 619 Landline Verizon Maryland, Inc. 02/04/1994
301 620 Landline Verizon Maryland, Inc. 02/04/1994
301 620 Landline Verizon Maryland, Inc. 02/04/1994
301 620 Landline Verizon Maryland, Inc. 02/04/1994
301 624 Landline Verizon Maryland, Inc. 01/10/1996
301 624 Landline Verizon Maryland, Inc. 01/10/1996
301 624 Landline Verizon Maryland, Inc. 01/10/1996
240 626 Wireless Sprint Spectrum L.p. 05/10/1999
240 626 Wireless Sprint Spectrum L.p. 05/10/1999
240 626 Wireless Sprint Spectrum L.p. 05/10/1999
240 629 Landline Verizon Maryland, Inc. 10/13/1999
240 629 Landline Verizon Maryland, Inc. 10/13/1999
240 629 Landline Verizon Maryland, Inc. 10/13/1999
301 631 Landline Verizon Maryland, Inc. 02/11/1995
301 631 Landline Verizon Maryland, Inc. 02/11/1995
301 631 Landline Verizon Maryland, Inc. 02/11/1995
301 639 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/11/1995
301 639 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/11/1995
301 639 Wireless Cellco Partnership Dba Verizon Wireless - Md 02/11/1995
301 644 Landline Verizon Maryland, Inc. 08/14/1998
301 644 Landline Verizon Maryland, Inc. 08/14/1998
301 644 Landline Verizon Maryland, Inc. 08/14/1998
240 651 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/28/2011
240 651 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/28/2011
240 651 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/28/2011
240 657 Landline Mci Worldcom Communications, Inc. - Md 01/06/2016
240 657 Landline Mci Worldcom Communications, Inc. - Md 01/06/2016
240 657 Landline Mci Worldcom Communications, Inc. - Md 01/06/2016
301 662 Landline Verizon Maryland, Inc. 02/04/1994
301 662 Landline Verizon Maryland, Inc. 02/04/1994
301 662 Landline Verizon Maryland, Inc. 02/04/1994
301 663 Landline Verizon Maryland, Inc. 02/04/1994
301 663 Landline Verizon Maryland, Inc. 02/04/1994
301 663 Landline Verizon Maryland, Inc. 02/04/1994
301 668 Landline Verizon Maryland, Inc. 08/14/1998
301 668 Landline Verizon Maryland, Inc. 08/14/1998
301 668 Landline Verizon Maryland, Inc. 08/14/1998
301 673 Landline New Frontiers Telecommunications, Inc. 06/13/2000
301 673 Landline New Frontiers Telecommunications, Inc. 06/13/2000
301 673 Landline New Frontiers Telecommunications, Inc. 06/13/2000
240 674 Wireless Sprint Spectrum L.p. 10/13/1999
240 674 Wireless Sprint Spectrum L.p. 10/13/1999
240 674 Wireless Sprint Spectrum L.p. 10/13/1999
301 676 Wireless New Cingular Wireless Pcs, Llc - Dc 07/06/1997
301 676 Wireless New Cingular Wireless Pcs, Llc - Dc 07/06/1997
301 676 Wireless New Cingular Wireless Pcs, Llc - Dc 07/06/1997
301 682 Landline Verizon Maryland, Inc. 02/11/1995
301 682 Landline Verizon Maryland, Inc. 02/11/1995
301 682 Landline Verizon Maryland, Inc. 02/11/1995
301 693 Wireless Omnipoint Communications Cap Operations, Llc 06/13/2000
301 693 Wireless Omnipoint Communications Cap Operations, Llc 06/13/2000
301 693 Wireless Omnipoint Communications Cap Operations, Llc 06/13/2000
301 694 Landline Verizon Maryland, Inc. 02/04/1994
301 694 Landline Verizon Maryland, Inc. 02/04/1994
301 694 Landline Verizon Maryland, Inc. 02/04/1994
301 695 Landline Verizon Maryland, Inc. 02/04/1994
301 695 Landline Verizon Maryland, Inc. 02/04/1994
301 695 Landline Verizon Maryland, Inc. 02/04/1994
301 696 Landline Verizon Maryland, Inc. 02/04/1994
301 696 Landline Verizon Maryland, Inc. 02/04/1994
301 696 Landline Verizon Maryland, Inc. 02/04/1994
301 698 Landline Verizon Maryland, Inc. 02/04/1994
301 698 Landline Verizon Maryland, Inc. 02/04/1994
301 698 Landline Verizon Maryland, Inc. 02/04/1994
240 699 Landline Verizon Maryland, Inc. 05/22/2001
240 699 Landline Verizon Maryland, Inc. 05/22/2001
301 712 Landline Mci Worldcom Communications, Inc. - Md 03/27/2005
301 712 Landline Mci Worldcom Communications, Inc. - Md 03/27/2005
301 712 Landline Mci Worldcom Communications, Inc. - Md 03/27/2005
301 748 Wireless Sprint Spectrum L.p. 04/01/1997
301 748 Wireless Sprint Spectrum L.p. 04/01/1997
301 748 Wireless Sprint Spectrum L.p. 04/01/1997
240 772 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2011
240 772 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2011
240 772 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2011
301 788 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/14/1998
301 788 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/14/1998
301 788 Wireless Cellco Partnership Dba Verizon Wireless - Md 08/14/1998
301 815 Landline Verizon Maryland, Inc. 02/04/1994
301 815 Landline Verizon Maryland, Inc. 02/04/1994
301 815 Landline Verizon Maryland, Inc. 02/04/1994
240 815 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2015
240 815 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2015
240 815 Wireless Cellco Partnership Dba Verizon Wireless - Md 11/17/2015
240 831 Landline Neutral Tandem-maryland, Llc - Md 04/26/2016
240 831 Landline Neutral Tandem-maryland, Llc - Md 04/26/2016
240 831 Landline Neutral Tandem-maryland, Llc - Md 04/26/2016
301 831 Landline Verizon Maryland, Inc. 02/04/1994
301 831 Landline Verizon Maryland, Inc. 02/04/1994
301 846 Landline Verizon Maryland, Inc. 02/04/1994
301 846 Landline Verizon Maryland, Inc. 02/04/1994
301 846 Landline Verizon Maryland, Inc. 02/04/1994
240 870 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 870 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 870 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
301 874 Landline Verizon Maryland, Inc. 02/04/1994
301 874 Landline Verizon Maryland, Inc. 02/04/1994
240 877 Landline Neutral Tandem-maryland, Llc - Md 08/25/2016
240 877 Landline Neutral Tandem-maryland, Llc - Md 08/25/2016
240 877 Landline Neutral Tandem-maryland, Llc - Md 08/25/2016
240 908 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 908 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 908 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 913 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 913 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 913 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 915 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 915 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 915 Landline Neutral Tandem-maryland, Llc - Md 09/02/2016
240 971 Landline Centurylink Communications Llc 08/02/2016
240 971 Landline Centurylink Communications Llc 08/02/2016
240 971 Landline Centurylink Communications Llc 08/02/2016

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