All Area Codes of 301

Maryland

Area Codes List: 240, 301, 410, 443, 667

Prefix City Company Type Introduced
301746 Accident, MD Verizon Maryland Landline 02/04/1994
301831 Adamstown, MD Verizon Maryland Landline 02/04/1994
301874 Adamstown, MD Verizon Maryland Landline 02/04/1994
301970 Annapolis, MD Verizon Maryland Landline 02/04/1994
301260 Ashton, MD Verizon Maryland Landline 07/06/1997
301570 Ashton, MD Verizon Maryland Landline 02/04/1994
301774 Ashton, MD Verizon Maryland Landline 02/04/1994
301924 Ashton, MD Verizon Maryland Landline 02/04/1994
301769 Avenue, MD Verizon Maryland Landline 02/04/1994
301878 Baltimore, MD Verizon Maryland Landline 01/10/1996
301210 Beltsville, MD Verizon Maryland Landline 02/04/1994
301213 Beltsville, MD Sprint Spectrum L.p. Cell Number 07/06/1997
301237 Beltsville, MD Sprint Spectrum L.p. Cell Number 04/01/1997
301254 Beltsville, MD Sprint Spectrum L.p. Cell Number 01/10/1996
301257 Beltsville, MD Sprint Spectrum L.p. Cell Number 10/11/1997
301379 Beltsville, MD Sprint Spectrum L.p. Cell Number 01/25/1998
301394 Beltsville, MD Verizon Maryland Landline 02/04/1994
301404 Beltsville, MD Sprint Spectrum L.p. Cell Number 04/15/1996
301419 Beltsville, MD Verizon Maryland Landline 02/04/1994
301425 Beltsville, MD Verizon Maryland Cell Number 09/11/1994
301426 Beltsville, MD Verizon Maryland Cell Number 04/15/1996
301437 Beltsville, MD Sprint Spectrum L.p. Cell Number 08/14/1998
301442 Beltsville, MD Sprint Spectrum L.p. Cell Number 01/25/1998
301455 Beltsville, MD Sprint Spectrum L.p. Cell Number 01/25/1998
301523 Beltsville, MD Sprint Spectrum L.p. Cell Number 10/15/1996
301537 Beltsville, MD Sprint Spectrum L.p. Cell Number 08/14/1998
301566 Beltsville, MD Verizon Maryland Cell Number 10/11/1997
301572 Beltsville, MD Verizon Maryland Landline 02/04/1994
301586 Beltsville, MD Verizon Maryland Landline 01/10/1996
301595 Beltsville, MD Verizon Maryland Landline 02/04/1994
301613 Beltsville, MD Sprint Spectrum L.p. Cell Number 07/01/1996
301716 Beltsville, MD Verizon Maryland Cell Number 07/01/1996
301806 Beltsville, MD Sprint Spectrum L.p. Cell Number 07/01/1996
301847 Beltsville, MD Verizon Maryland Landline 02/04/1994
301890 Beltsville, MD Verizon Maryland Landline 02/04/1994
301902 Beltsville, MD Verizon Maryland Landline 02/04/1994
301931 Beltsville, MD Verizon Maryland Landline 07/04/1995
301937 Beltsville, MD Verizon Maryland Landline 02/04/1994
301996 Beltsville, MD Sprint Spectrum L.p. Cell Number 01/10/1996
301204 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 04/15/1996
301219 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 07/04/1995
301221 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 09/11/1994
301222 Bethesda, MD Cavalier Telephone Mid-atlantic Landline 10/11/1997
301243 Bethesda, MD Verizon Maryland Landline 07/20/2006
301275 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/11/1995
301299 Bethesda, MD Verizon Maryland Landline 02/04/1994
301300 Bethesda, MD Cellco Partnership DBA Verizon Wireless Cell Number 03/30/2007
301318 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301335 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 09/11/1994
301365 Bethesda, MD Verizon Maryland Landline 02/04/1994
301385 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 04/01/1997
301402 Bethesda, MD Verizon Maryland Landline 02/04/1994
301412 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301435 Bethesda, MD Verizon Maryland Landline 07/04/1995
301451 Bethesda, MD Verizon Maryland Landline 05/10/1999
301469 Bethesda, MD Verizon Maryland Landline 02/04/1994
301480 Bethesda, MD Verizon Maryland Landline 02/04/1994
301496 Bethesda, MD Verizon Maryland Landline 02/04/1994
301503 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301538 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/11/1995
301554 Bethesda, MD Usa Mobility Wireless Cell Number 05/18/1998
301594 Bethesda, MD Verizon Maryland Landline 02/04/1994
301633 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/11/1995
301642 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 01/25/1998
301646 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 01/10/1996
301648 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301655 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 04/15/1996
301661 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 09/11/1994
301674 Bethesda, MD Sprint Spectrum L.p. Cell Number 11/20/1998
301742 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301760 Bethesda, MD Level 3 Communications Landline 02/27/2002
301765 Bethesda, MD Verizon Maryland Landline 10/15/1996
301767 Bethesda, MD Verizon Maryland Landline 10/15/1996
301813 Bethesda, MD Baltimore-washington Telephone (bwt) Landline 06/30/2001
301814 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301827 Bethesda, MD Verizon Maryland Landline 02/04/1994
301828 Bethesda, MD AT&T Local Landline 08/14/1998
301906 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 10/15/1996
301910 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301915 Bethesda, MD Starpower Communications Landline 11/20/1998
301919 Bethesda, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301968 Bethesda, MD Mci Worldcom Communications Landline 07/04/1995
301983 Bethesda, MD Verizon Maryland Landline 02/04/1994
301245 Bittinger, MD Verizon Maryland Landline 02/04/1994
301218 Bowie, MD Verizon Maryland Landline 01/10/1996
301249 Bowie, MD Verizon Maryland Landline 02/04/1994
301262 Bowie, MD Verizon Maryland Landline 02/04/1994
301352 Bowie, MD Verizon Maryland Landline 09/11/1994
301390 Bowie, MD Verizon Maryland Landline 02/04/1994
301430 Bowie, MD Verizon Maryland Landline 10/11/1997
301464 Bowie, MD Verizon Maryland Landline 02/04/1994
301805 Bowie, MD Verizon Maryland Landline 02/04/1994
301809 Bowie, MD Verizon Maryland Landline 02/04/1994
301860 Bowie, MD Verizon Maryland Landline 08/20/2000
301242 Brandywine, MD Mcimetro Access Transmission Services LLC Landline 01/11/1997
301372 Brandywine, MD Verizon Maryland Landline 02/04/1994
301579 Brandywine, MD Verizon Maryland Landline 02/04/1994
301720 Brandywine, MD Teleport Communications America – DC Landline 08/14/1998
301782 Brandywine, MD Verizon Maryland Landline 02/04/1994
301888 Brandywine, MD Verizon Maryland Landline 02/04/1994
301834 Brunswick, MD Verizon Maryland Landline 02/04/1994
301969 Brunswick, MD Comcast Phone Of Northern Maryland Landline 03/06/2007
301283 Bryans Road, MD Verizon Maryland Landline 02/04/1994
301375 Bryans Road, MD Verizon Maryland Landline 02/04/1994
301768 Cabin John, MD Level 3 Communications Landline 02/27/2002
301324 Capitol Heights, MD Verizon Maryland Landline 07/04/1995
301333 Capitol Heights, MD Verizon Maryland Landline 01/11/1997
301336 Capitol Heights, MD Verizon Maryland Landline 02/04/1994
301343 Capitol Heights, MD Sprint Spectrum L.p. Cell Number 02/11/1995
301350 Capitol Heights, MD Verizon Maryland Landline 02/04/1994
301440 Capitol Heights, MD Sprint Spectrum L.p. Cell Number 05/18/1998
301499 Capitol Heights, MD Verizon Maryland Landline 02/04/1994
301727 Capitol Heights, MD Baltimore-washington Telephone (bwt) Landline 06/13/2000
301778 Capitol Heights, MD Mci Worldcom Communications Landline 07/04/1995
301808 Capitol Heights, MD Verizon Maryland Landline 02/04/1994
301202 Chevy Chase, MD New Cingular Wireless PCS – DC Cell Number 12/19/2008
301215 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301224 Chevy Chase, MD Usa Mobility Wireless Cell Number 04/15/1996
301280 Chevy Chase, MD Verizon Maryland Landline 10/11/1997
301347 Chevy Chase, MD Verizon Maryland Landline 10/15/1996
301406 Chevy Chase, MD Usa Mobility Wireless Cell Number 02/04/1994
301492 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301500 Chevy Chase, MD Xo Maryland Landline 09/01/2010
301652 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301654 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301656 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301657 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301664 Chevy Chase, MD Verizon Maryland Landline 01/10/1996
301718 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301771 Chevy Chase, MD Verizon Maryland Cell Number 04/01/1997
301907 Chevy Chase, MD Verizon Maryland Landline 05/18/1998
301913 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301941 Chevy Chase, MD Verizon Maryland Landline 02/11/1995
301951 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301961 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301986 Chevy Chase, MD Verizon Maryland Landline 02/04/1994
301842 Clear Spring, MD Verizon Maryland Landline 02/04/1994
301857 Clear Spring, MD Core Communications Landline 07/12/2002
301235 Clinton, MD Mcimetro Access Transmission Services LLC Landline 01/11/1997
301599 Clinton, MD Verizon Maryland Landline 02/04/1994
301856 Clinton, MD Verizon Maryland Landline 02/04/1994
301868 Clinton, MD Verizon Maryland Landline 02/04/1994
301877 Clinton, MD Verizon Maryland Landline 01/11/1997
301289 College Park, MD Mci Worldcom Communications Landline 01/11/1997
301307 College Park, MD Verizon Maryland Landline 07/01/1996
301477 College Park, MD Comcast Phone Of Northern Maryland Landline 10/11/1997
301479 College Park, MD Mci Worldcom Communications Landline 07/04/1995
301558 College Park, MD Usa Mobility Wireless Cell Number 05/18/1998
301796 College Park, MD Verizon Maryland Landline 06/30/2003
301310 Columbia, MD Verizon Maryland Landline 07/01/1996
301596 Columbia, MD Verizon Maryland Landline 02/04/1994
301854 Columbia, MD Verizon Maryland Landline 02/04/1994
301268 Cumberland, MD Uscoc Of Cumberland DBA United States Cel Md Cell Number 07/06/1997
301338 Cumberland, MD Idt America Corp Landline 01/31/2006
301697 Cumberland, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301707 Cumberland, MD Uscoc Of Cumberland DBA United States Cel Md Cell Number 02/04/1994
301722 Cumberland, MD Verizon Maryland Landline 02/04/1994
301723 Cumberland, MD Verizon Maryland Landline 05/18/1998
301724 Cumberland, MD Verizon Maryland Landline 02/04/1994
301729 Cumberland, MD Verizon Maryland Landline 02/04/1994
301759 Cumberland, MD Verizon Maryland Landline 02/04/1994
301777 Cumberland, MD Verizon Maryland Landline 02/04/1994
301783 Cumberland, MD New Frontiers Telecommunications Landline 06/13/2000
301784 Cumberland, MD Verizon Maryland Landline 09/11/1994
301876 Cumberland, MD Level 3 Communications Landline 05/02/2002
301253 Damascus, MD Verizon Maryland Landline 02/04/1994
301363 Damascus, MD Level 3 Communications Landline 08/16/2006
301368 Damascus, MD Verizon Maryland Landline 01/25/1998
301391 Damascus, MD Verizon Maryland Landline 02/11/1995
301414 Damascus, MD Verizon Maryland Landline 02/04/1994
301482 Damascus, MD Verizon Maryland Landline 04/15/1996
301685 Damascus, MD Teleport Communications America – DC Landline 08/14/1998
301205 Edgewater, MD Verizon Maryland Landline 07/06/1997
301447 Emmitsburg, MD Verizon Maryland Landline 02/04/1994
301203 Fort Washington, MD Verizon Maryland Landline 02/04/1994
301234 Fort Washington, MD Verizon Maryland Landline 01/11/1997
301248 Fort Washington, MD Verizon Maryland Landline 02/04/1994
301265 Fort Washington, MD Verizon Maryland Landline 01/11/1997
301292 Fort Washington, MD Verizon Maryland Landline 02/04/1994
301297 Fort Washington, MD Verizon Maryland Landline 02/04/1994
301433 Fort Washington, MD Verizon Maryland Landline 01/11/1997
301449 Fort Washington, MD Verizon Maryland Landline 02/04/1994
301228 Frederick, MD Verizon Maryland Landline 07/06/1997
301304 Frederick, MD Comcast Phone Of Northern Maryland Landline 03/06/2007
301305 Frederick, MD Sprint Spectrum L.p. Cell Number 04/15/1996
301360 Frederick, MD Verizon Maryland Landline 01/25/1998
301378 Frederick, MD Comcast Phone Of Northern Maryland Landline 02/20/2007
301401 Frederick, MD New Cingular Wireless PCS – DC Cell Number 02/04/1994
301418 Frederick, MD Verizon Maryland Landline 11/20/2002
301471 Frederick, MD Cellco Partnership DBA Verizon Wireless Cell Number 04/15/1996
301473 Frederick, MD Verizon Maryland Landline 02/04/1994
301514 Frederick, MD Cellco Partnership DBA Verizon Wireless Cell Number 07/01/1996
301524 Frederick, MD Sprint Spectrum L.p. Cell Number 08/14/1998
301600 Frederick, MD Verizon Maryland Landline 07/06/2006
301606 Frederick, MD Cellco Partnership DBA Verizon Wireless Cell Number 02/04/1994
301619 Frederick, MD Verizon Maryland Landline 02/04/1994
301620 Frederick, MD Verizon Maryland Landline 02/04/1994
301624 Frederick, MD Verizon Maryland Landline 01/10/1996
301631 Frederick, MD Verizon Maryland Landline 02/11/1995
301639 Frederick, MD Cellco Partnership DBA Verizon Wireless Cell Number 02/11/1995
301644 Frederick, MD Verizon Maryland Landline 08/14/1998
301662 Frederick, MD Verizon Maryland Landline 02/04/1994
301663 Frederick, MD Verizon Maryland Landline 02/04/1994
301668 Frederick, MD Verizon Maryland Landline 08/14/1998
301673 Frederick, MD New Frontiers Telecommunications Landline 06/13/2000
301676 Frederick, MD New Cingular Wireless PCS – DC Cell Number 07/06/1997
301682 Frederick, MD Verizon Maryland Landline 02/11/1995
301693 Frederick, MD Omnipoint Communications Cap Operations Cell Number 06/13/2000
301694 Frederick, MD Verizon Maryland Landline 02/04/1994
301695 Frederick, MD Verizon Maryland Landline 02/04/1994
301696 Frederick, MD Verizon Maryland Landline 02/04/1994
301698 Frederick, MD Verizon Maryland Landline 02/04/1994
301712 Frederick, MD Mci Worldcom Communications Landline 03/27/2005
301748 Frederick, MD Sprint Spectrum L.p. Cell Number 04/01/1997
301788 Frederick, MD Cellco Partnership DBA Verizon Wireless Cell Number 08/14/1998
301815 Frederick, MD Verizon Maryland Landline 02/04/1994
301846 Frederick, MD Verizon Maryland Landline 02/04/1994
301900 Frederick, MD Verizon Maryland Landline 10/22/2013
301750 Friendsville, MD Core Communications Landline 03/18/2004
301687 Frostburg, MD Verizon Maryland Landline 07/04/1995
301689 Frostburg, MD Verizon Maryland Landline 02/04/1994
301781 Frostburg, MD New Frontiers Telecommunications Landline 06/13/2000
301208 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301212 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301216 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301240 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301252 Gaithersburg, MD Sprint Spectrum L.p. Cell Number 01/10/1996
301258 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301330 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301337 Gaithersburg, MD Mci Worldcom Communications Landline 07/04/1995
301353 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301355 Gaithersburg, MD Verizon Maryland Landline 12/08/2005
301366 Gaithersburg, MD Sprint Spectrum L.p. Cell Number 10/11/1997
301370 Gaithersburg, MD Sprint Spectrum L.p. Cell Number 05/18/1998
301417 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301428 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301444 Gaithersburg, MD Verizon Maryland Landline 01/25/1998
301515 Gaithersburg, MD Verizon Maryland Landline 01/10/1996
301519 Gaithersburg, MD Verizon Maryland Landline 04/01/1997
301525 Gaithersburg, MD Quantum Telecommunications Landline 10/16/2003
301527 Gaithersburg, MD Verizon Maryland Landline 02/11/1995
301528 Gaithersburg, MD Verizon Maryland Landline 08/14/1998
301540 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301548 Gaithersburg, MD Verizon Maryland Landline 02/11/1995
301556 Gaithersburg, MD Teleport Communications America – DC Landline 10/11/1997
301569 Gaithersburg, MD Cellco Partnership DBA Verizon Wireless Cell Number 08/14/1998
301590 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301591 Gaithersburg, MD Paetec Communications Landline 08/14/1998
301601 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301640 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301670 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301721 Gaithersburg, MD Verizon Maryland Landline 10/15/1996
301740 Gaithersburg, MD Verizon Maryland Landline 04/22/2004
301820 Gaithersburg, MD AT&T Local Landline 11/20/1998
301840 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301869 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301903 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301921 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301926 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301944 Gaithersburg, MD Mcimetro Access Transmission Services LLC Landline 11/20/1998
301947 Gaithersburg, MD Verizon Maryland Landline 04/15/1996
301948 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301963 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301972 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301975 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301977 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301978 Gaithersburg, MD Verizon Maryland Landline 10/11/1997
301979 Gaithersburg, MD Verizon Maryland Landline 04/15/1996
301987 Gaithersburg, MD Verizon Maryland Landline 10/11/1997
301990 Gaithersburg, MD Verizon Maryland Landline 02/04/1994
301227 Glen Echo, MD Verizon Maryland Landline 02/04/1994
301229 Glen Echo, MD Verizon Maryland Landline 02/04/1994
301263 Glen Echo, MD Verizon Maryland Landline 04/01/1997
301320 Glen Echo, MD Verizon Maryland Landline 02/04/1994
301225 Glenn Dale, MD Teleport Communications America – DC Landline 05/21/2009
301261 Glenn Dale, MD Verizon Maryland Landline 02/04/1994
301383 Glenn Dale, MD Comcast Phone Of Northern Maryland Landline 10/11/1997
301621 Glenn Dale, MD Verizon Maryland Landline 02/04/1994
301629 Glenn Dale, MD Verizon Maryland Cell Number 02/04/1994
301666 Glenn Dale, MD Teleport Communications America – DC Landline 08/14/1998
301677 Glenn Dale, MD Teleport Communications America – DC Landline 02/04/1994
301833 Glenn Dale, MD Teleport Communications America – DC Landline 11/11/2003
301850 Glenn Dale, MD Level 3 Communications Landline 08/04/2002
301858 Glenn Dale, MD Verizon Maryland Landline 02/04/1994
301889 Glenn Dale, MD Verizon Maryland Landline 01/10/1996
301973 Glenn Dale, MD Verizon Maryland Landline 02/04/1994
301895 Grantsville, MD Verizon Maryland Landline 02/04/1994
301207 Greenbelt, MD Usa Mobility Wireless Cell Number 02/04/1994
301220 Greenbelt, MD Verizon Maryland Landline 02/04/1994
301267 Greenbelt, MD Sprint Spectrum L.p. Cell Number 10/04/2011
301286 Greenbelt, MD Verizon Maryland Landline 02/04/1994
301303 Greenbelt, MD Usa Mobility Wireless Cell Number 02/04/1994
301308 Greenbelt, MD Usa Mobility Wireless Cell Number 02/04/1994
301313 Greenbelt, MD Verizon Maryland Landline 10/11/1997
301329 Greenbelt, MD Cavalier Telephone Mid-atlantic Cell Number 09/20/2011
301344 Greenbelt, MD Verizon Maryland Landline 02/04/1994
301345 Greenbelt, MD Verizon Maryland Landline 02/04/1994
301397 Greenbelt, MD Verizon Maryland Cell Number 02/11/1995
301409 Greenbelt, MD Usa Mobility Wireless Cell Number 02/04/1994
301441 Greenbelt, MD Verizon Maryland Landline 02/04/1994