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Telephone communication, except radio Businesses in Maryland (SIC Code: 4813)

Search Telephone communication, except radio businesses in Maryland below and click on on a business name to see details.
4 What Purpose Owings Mills, Maryland (Baltimore County)
Online service providers (SIC Code:481302)
Phone: 410-654-5338
Fax: 410-654-5338
A & T Systems, Inc. Silver Spring, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-384-1425
Fax: 301-384-1425
Abovenet Communications, Inc. Aberdeen, Maryland (Harford County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 443-403-2000
Fax: 443-403-2000
Advanced Digital Document Systems Inc Lanham, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-731-5556
Fax: 301-731-5556
Advantage Telecom Inc Emmitsburg, Maryland (Frederick County)
Telephone communication, except radio (SIC Code:481399)
Phone: 301-447-2001
Fax: 301-447-2001
Adventure Time Inc Baltimore, Maryland (Baltimore County)
Computer Integrated Systems Design (SIC Code:737300)
Phone: 410-788-7007
Fax: 410-788-7007
Alcatel-Lucent USA Inc. Linthicum Heights, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone:
Fax:
Alexander & Tom, Inc Baltimore, Maryland (Baltimore City County)
Advertising agencies (SIC Code:731199)
Phone: 410-327-7400
Fax: 410-327-7400
Angell Systems, LLC Bethesda, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 301-657-8556
Fax: 301-657-8556
Annapolis Wireless Internet, LLC Annapolis, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 443-321-3743
Fax: 443-321-3743
Applied Wireless Local Area Networks, Inc. Rockville, Maryland (Montgomery County)
Telephone communication, except radio (SIC Code:481399)
Phone: 301-424-6857
Fax: 301-424-6857
Argan, Inc. Rockville, Maryland (Montgomery County)
Vitamin, nutrient, and hematinic preparations for human use (SIC Code:283407)
Phone: 301-315-0027
Fax: 301-315-0027
AT&T Corp. Columbia, Maryland (Howard County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 443-259-8231
Fax: 443-259-8231
AT&T Mobility LLC Hanover, Maryland (Anne Arundel County)
Radiotelephone Communications (SIC Code:481200)
Phone: 410-712-7700
Fax: 410-712-7700
Atlantech Online, Inc. Silver Spring, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 301-589-3060
Fax: 301-589-3060
Bell Atlantic Investment Development Corporation Beltsville, Maryland (Prince Georges County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-595-1561
Fax: 301-595-1561
Boskatel International, LLC Lanham, Maryland ( County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Boxwood Technology Incorporated Hunt Valley, Maryland (Baltimore County)
Online service providers (SIC Code:481302)
Phone: 410-584-8700
Fax: 410-584-8700
Breakthrough Digital Media LLC Columbia, Maryland (Howard County)
Online service providers (SIC Code:481302)
Phone: 410-740-3311
Fax: 410-740-3311
Brivo Systems, LLC Bethesda, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 301-664-5242
Fax: 301-664-5242
Broadstripe, LLC Millersville, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Business Process Analysis Group, LLC Glenn Dale, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 866-657-1675
Fax: 866-657-1675
Byte of Success, Inc. Baltimore, Maryland (Baltimore City County)
Computer related consulting services (SIC Code:737902)
Phone: 410-358-5450
Fax: 410-358-5450
Cavalier Telephone, L.L.C. Hanover, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-694-4265
Fax: 410-694-4265
Centretek Solutions, LLC Ellicott City, Maryland (Howard County)
Computer Programming Services (SIC Code:737100)
Phone: 410-465-4880
Fax: 410-465-4880
Charm Net LLC Baltimore, Maryland (Baltimore City County)
Communication services (SIC Code:489999)
Phone: 410-361-8160
Fax: 410-361-8160
City of Baltimore Baltimore, Maryland (Baltimore City County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-396-4926
Fax: 410-396-4926
Clickshot Inc Kensington, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 301-466-8082
Fax: 301-466-8082
Closecall America, Inc. Stevensville, Maryland (Queen Annes County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-604-0405
Fax: 410-604-0405
Coledata Inc Havre De Grace, Maryland (Harford County)
Online service providers (SIC Code:481302)
Phone: 410-939-1653
Fax: 410-939-1653
Comm-Tronics, Inc. Glen Burnie, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-768-3333
Fax: 410-768-3333
Communications Resources Inc Arnold, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-647-7880
Fax: 410-647-7880
Comtech Mobile Datacom Corporation Germantown, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 240-686-3300
Fax: 240-686-3300
Continental Broadband Maryland, Inc Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone: 410-384-2525
Fax: 410-384-2525
Conxx, Inc. Cumberland, Maryland (Allegany County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 888-882-6699
Fax: 888-882-6699
Cosmoflash LLC & Technology Reisterstown, Maryland (Baltimore County)
Computer Integrated Systems Design (SIC Code:737300)
Phone: 410-526-4496
Fax: 410-526-4496
Covad Communications Group, Inc. Annapolis Junction, Maryland (Howard County)
Local and long distance telephone communications (SIC Code:481301)
Phone:
Fax:
Craftix Technical Solutions Baltimore, Maryland (Baltimore County)
Computer processing services (SIC Code:737401)
Phone: 410-788-5651
Fax: 410-788-5651
Crave Technologies Inc Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone: 410-576-9755
Fax: 410-576-9755
Ctc Communications Corp. Linthicum Heights, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-694-9696
Fax: 410-694-9696
Custom Wireless Connections LLC Montgomery Village, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-840-2227
Fax: 301-840-2227
Daionet Consulting, Llc. Baltimore, Maryland ( County)
Computer processing services (SIC Code:737401)
Phone:
Fax:
Delmarva Web Hosting Girdletree, Maryland (Worcester County)
Online service providers (SIC Code:481302)
Phone: 410-957-4888
Fax: 410-957-4888
Dentisoft Technologies Inc Bethesda, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 240-497-0022
Fax: 240-497-0022
Digi-Tel, Inc Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-223-2840
Fax: 410-223-2840
Digital Marketing Inc Bowie, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-249-6501
Fax: 301-249-6501
Donpaul Enterprises Hyattsville, Maryland (Prince Georges County)
Computer processing services (SIC Code:737401)
Phone: 301-486-1999
Fax: 301-486-1999
Dvx Inc Reisterstown, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-833-1200
Fax: 410-833-1200
Dynis Incorporated Columbia, Maryland (Howard County)
Online service providers (SIC Code:481302)
Phone: 410-290-9972
Fax: 410-290-9972
E Source Technologies, Inc. Upper Marlboro, Maryland (Prince Georges County)
Computer software development and applications (SIC Code:737103)
Phone: 301-249-3700
Fax: 301-249-3700
E.magination Network, LLC Baltimore, Maryland (Baltimore City County)
Computer processing services (SIC Code:737401)
Phone: 410-234-1500
Fax: 410-234-1500
Ecollaboration Corp Annapolis, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 410-975-9525
Fax: 410-975-9525
Eduro Networks, LLC Maugansville, Maryland (Washington County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 240-529-2000
Fax: 240-529-2000
Elist Express LLC Sykesville, Maryland (Carroll County)
Online service providers (SIC Code:481302)
Phone: 410-549-4619
Fax: 410-549-4619
Emerald Events Inc Pasadena, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 410-439-1302
Fax: 410-439-1302
Endless Nights LLC Abingdon, Maryland (Harford County)
Online service providers (SIC Code:481302)
Phone: 443-451-5080
Fax: 443-451-5080
Exxelot Corporation Elkridge, Maryland (Howard County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-715-0113
Fax: 410-715-0113
Focus Consulting, Inc. Damascus, Maryland (Montgomery County)
Computer software development and applications (SIC Code:737103)
Phone: 301-610-2080
Fax: 301-610-2080
Freedom Wireless Broadband, LLC Sykesville, Maryland (Carroll County)
Online service providers (SIC Code:481302)
Phone: 410-259-3901
Fax: 410-259-3901
Freetech LLC Annapolis, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-757-7711
Fax: 410-757-7711
Global Data Technology Corporation Frederick, Maryland (Frederick County)
Computer software development and applications (SIC Code:737103)
Phone: 301-624-4041
Fax: 301-624-4041
Hatchers Elkridge, Maryland (Howard County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-443-1592
Fax: 410-443-1592
Hbmi Solutions, LLC Bethesda, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-652-8910
Fax: 301-652-8910
Hosting Ventures, LLC Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone: 410-234-3300
Fax: 410-234-3300
Hughes Communications, Inc. Germantown, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-428-5500
Fax: 301-428-5500
Ilearning, Inc Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Imageline LLC Owings Mills, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-998-3553
Fax: 410-998-3553
Innovative Exchange Inc Forest Hill, Maryland (Harford County)
Computer Programming Services (SIC Code:737100)
Phone: 410-638-1608
Fax: 410-638-1608
Internet Marketing Solutions Elkridge, Maryland (Howard County)
Online service providers (SIC Code:481302)
Phone: 410-799-9283
Fax: 410-799-9283
Jones Internet Service Ocean City, Maryland (Worcester County)
Online service providers (SIC Code:481302)
Phone: 410-524-8872
Fax: 410-524-8872
Level 3 Communications, Inc. Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-230-4000
Fax: 410-230-4000
Level 3 Communications, LLC Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone:
Fax:
Litecast/Balticore LLC Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone: 410-732-2756
Fax: 410-732-2756
Lockheed Martin Global Telecommunications LLC Bethesda, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-214-3000
Fax: 301-214-3000
Macfadden & Associates, Inc. Silver Spring, Maryland (Montgomery County)
Computer Programming Services (SIC Code:737100)
Phone: 301-588-5900
Fax: 301-588-5900
Management Technology, Inc. Oxon Hill, Maryland (Prince Georges County)
Computer Facilities Management Services (SIC Code:737600)
Phone: 301-265-8900
Fax: 301-265-8900
Maryland National Capital Park & Planning Silver Spring, Maryland (Montgomery County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-622-7906
Fax: 301-622-7906
MCI Worldcom Communications, Inc. Bowie, Maryland (Prince Georges County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-352-7503
Fax: 301-352-7503
Meddium, LLC Silver Spring, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 443-745-3745
Fax: 443-745-3745
Metrocast Communications Hollywood, Maryland (Saint Marys County)
Communications specialization (SIC Code:173103)
Phone: 301-373-7856
Fax: 301-373-7856
Mid Atlantic Telephone Corp Gaithersburg, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-424-8228
Fax: 301-424-8228
Midatlanticbroadband Inc Baltimore, Maryland (Baltimore City County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Millennium Technologies LLC Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-396-3467
Fax: 410-396-3467
Mudpuddle Creations Linthicum Heights, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 410-859-5287
Fax: 410-859-5287
Native American Industrial Distributors, Inc. Upper Marlboro, Maryland (Prince Georges County)
Management Consulting Services (SIC Code:874200)
Phone: 301-599-7085
Fax: 301-599-7085
Navius Technologies, LLC Edgewater, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 410-266-8498
Fax: 410-266-8498
Network Connectivity Solutions, Corp. Hagerstown, Maryland (Washington County)
Online service providers (SIC Code:481302)
Phone: 301-739-9110
Fax: 301-739-9110
Nextwave Communications, LLC Germantown, Maryland (Montgomery County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-916-6300
Fax: 301-916-6300
North American Communications (inc) Bethesda, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-365-7225
Fax: 301-365-7225
P Coe Computer Services, Inc. Thurmont, Maryland (Frederick County)
Online service providers (SIC Code:481302)
Phone: 301-271-7668
Fax: 301-271-7668
Paetec Communications, Inc. Columbia, Maryland (Howard County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 443-573-1000
Fax: 443-573-1000
Papercatalogsonline Annapolis, Maryland (Anne Arundel County)
Online service providers (SIC Code:481302)
Phone: 410-267-1427
Fax: 410-267-1427
Pinnacle Communications Corp. Germantown, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-601-0777
Fax: 301-601-0777
Potomac Digitek Inc Gaithersburg, Maryland (Montgomery County)
Computer processing services (SIC Code:737401)
Phone: 301-590-2770
Fax: 301-590-2770
Potomac Tech Wire Chevy Chase, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Quantum Internet Services, Inc. Manchester, Maryland (Carroll County)
Online service providers (SIC Code:481302)
Phone: 410-239-6920
Fax: 410-239-6920
Qwest Communications International Inc Owings Mills, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-581-9211
Fax: 410-581-9211
Qwest Corporation Linthicum Heights, Maryland (Anne Arundel County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-694-4700
Fax: 410-694-4700
R & D Enterprises Rockville, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 301-564-1297
Fax: 301-564-1297
R. REA Corp. Clinton, Maryland (Prince Georges County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-877-8621
Fax: 301-877-8621
Radix II Inc Oxon Hill, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-567-5200
Fax: 301-567-5200
Radvision Reisterstown, Maryland (Baltimore County)
Telephone communication, except radio (SIC Code:481399)
Phone: 410-252-4545
Fax: 410-252-4545
Saic Corp Telecom Frederick, Maryland (Frederick County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-228-3779
Fax: 301-228-3779
Sandglass Systems Kensington, Maryland (Montgomery County)
Information retrieval services (SIC Code:737599)
Phone: 301-942-8400
Fax: 301-942-8400
Seven Thoughts, LLC Owings Mills, Maryland (Baltimore County)
Online service providers (SIC Code:481302)
Phone: 443-939-7963
Fax: 443-939-7963
Sgt, Inc. Greenbelt, Maryland (Prince Georges County)
Commercial Physical And Biological Research (SIC Code:873100)
Phone: 301-614-8600
Fax: 301-614-8600
Shared Technologies Inc Beltsville, Maryland (Prince Georges County)
Local and long distance telephone communications (SIC Code:481301)
Phone:
Fax:
Shinkuro Inc Bethesda, Maryland ( County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Single Source Integrated Services, Inc. Lutherville Timonium, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-649-0049
Fax: 410-649-0049
Skyhop.com, Inc. Hagerstown, Maryland (Washington County)
Online service providers (SIC Code:481302)
Phone: 301-791-1236
Fax: 301-791-1236
Sparklingpresentations.com Clinton, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-877-6479
Fax: 301-877-6479
Sunrise Solutions, Inc. Annapolis, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-573-0555
Fax: 410-573-0555
Surelock Communications Inc Kensington, Maryland (Montgomery County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 202-352-3404
Fax: 202-352-3404
Systcom, Inc. Baltimore, Maryland (Anne Arundel County)
Telephone communication, except radio (SIC Code:481399)
Phone: 443-557-1500
Fax: 443-557-1500
Technology Specialists, Inc. Bowie, Maryland (Prince Georges County)
Computer peripheral equipment (SIC Code:504501)
Phone: 301-352-4400
Fax: 301-352-4400
Telecontinuity Inc Rockville, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-785-5157
Fax: 301-785-5157
Telemessaging Services Inc Baltimore, Maryland (Baltimore City County)
Telephone services (SIC Code:738910)
Phone: 410-377-3000
Fax: 410-377-3000
Telephone Road Arnold, Maryland (Anne Arundel County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-757-3826
Fax: 410-757-3826
Telkonet, Inc. Germantown, Maryland (Montgomery County)
Communications specialization (SIC Code:173103)
Phone: 240-912-1800
Fax: 240-912-1800
The Canton Group Limited Liability Company Baltimore, Maryland (Baltimore City County)
Systems software development services (SIC Code:737301)
Phone: 410-522-7980
Fax: 410-522-7980
The Internet Business Exchange Inc Pikesville, Maryland (Baltimore County)
Online service providers (SIC Code:481302)
Phone: 443-250-4919
Fax: 443-250-4919
The Sync Inc Laurel, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-438-7281
Fax: 301-438-7281
Think Converged, Inc. Nottingham, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-323-9600
Fax: 410-323-9600
Three Gems Inc Takoma Park, Maryland (Montgomery County)
Online service providers (SIC Code:481302)
Phone: 202-595-1950
Fax: 202-595-1950
Transactis, Inc. Bethesda, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-404-2779
Fax: 301-404-2779
Transecur Inc Rockville, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-315-2223
Fax: 301-315-2223
Unity Communication, Inc. Cabin John, Maryland ( County)
Radiotelephone communication (SIC Code:481299)
Phone:
Fax:
Venzon Wireless Annapolis Junction, Maryland (Howard County)
Radiotelephone communication (SIC Code:481299)
Phone: 301-617-4210
Fax: 301-617-4210
Verizon Business Global LLC Frederick, Maryland (Frederick County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-360-3043
Fax: 301-360-3043
Verizon Business Global LLC Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-468-1100
Fax: 410-468-1100
Verizon Business Global LLC Columbia, Maryland (Howard County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-381-1100
Fax: 410-381-1100
Verizon Business Global LLC Baltimore, Maryland (Baltimore City County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-347-0598
Fax: 410-347-0598
Verizon Business Global LLC Towson, Maryland (Baltimore County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-842-6700
Fax: 410-842-6700
Verizon Communications Inc. Beltsville, Maryland (Prince Georges County)
Online service providers (SIC Code:481302)
Phone: 301-595-6624
Fax: 301-595-6624
Verizon Communications Inc. Silver Spring, Maryland (Montgomery County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-236-3177
Fax: 301-236-3177
Verizon Communications Inc. Aberdeen, Maryland (Harford County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-734-6711
Fax: 410-734-6711
Verizon Communications Inc. Towson, Maryland (Baltimore County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 213-337-1723
Fax: 213-337-1723
Verizon Communications Inc. Cockeysville, Maryland (Baltimore County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-393-6461
Fax: 410-393-6461
Verizon Maryland Inc Salisbury, Maryland (Wicomico County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-810-8360
Fax: 410-810-8360
Verizon Maryland Inc Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-954-6260
Fax: 410-954-6260
Verizon Maryland Inc Salisbury, Maryland (Wicomico County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-546-8098
Fax: 410-546-8098
Verizon Maryland Inc Laurel, Maryland (Howard County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-604-1113
Fax: 301-604-1113
Verizon Maryland Inc Cockeysville, Maryland (Baltimore County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-393-6100
Fax: 410-393-6100
Verizon Maryland Inc Rockville, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-402-9920
Fax: 301-402-9920
Verizon Select Services Inc. Linthicum, Maryland (Anne Arundel County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-694-3900
Fax: 410-694-3900
VT Aepco Inc. Gaithersburg, Maryland (Montgomery County)
Engineering services (SIC Code:871199)
Phone: 301-670-6770
Fax: 301-670-6770
Webconnection Internet Consultants LLC Baltimore, Maryland (Baltimore City County)
Information retrieval services (SIC Code:737599)
Phone: 410-342-8630
Fax: 410-342-8630
Whirlwind Inc Bethesda, Maryland ( County)
Online service providers (SIC Code:481302)
Phone:
Fax:
Wire Solutions, Inc. Baltimore, Maryland (Baltimore County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 410-686-5009
Fax: 410-686-5009
Wireless Enterprises, Ltd. Baltimore, Maryland (Baltimore City County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 410-783-9301
Fax: 410-783-9301
Wisor Telecommunications Frederick, Maryland ( County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone:
Fax:
Xecunet, LLC Frederick, Maryland (Frederick County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 301-682-9972
Fax: 301-682-9972
Xo Communications Linthicum Heights, Maryland (Anne Arundel County)
Local and long distance telephone communications (SIC Code:481301)
Phone: 443-891-2367
Fax: 443-891-2367
Xtar, LLC Rockville, Maryland (Montgomery County)
Telephone Communications, Except Radiotelephone (SIC Code:481300)
Phone: 301-258-3235
Fax: 301-258-3235
York Telecom Corp Hyattsville, Maryland (Prince Georges County)
Cable, telegram, and telex services (SIC Code:482202)
Phone: 301-429-8839
Fax: 301-429-8839