AT & T
303 W Lake St, Northlake, IL
(708) 450-2440
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Addison Communications
520 W Lake St, Addison, IL
(630) 543-0517
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Adelphia Business Solutions
1921 Butterfield Rd, Downers Grove, IL
(630) 324-0100
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Allied Electric & Comms
1418 Brook Dr, Downers Grove, IL
(630) 691-1400
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American Coin Tel Incorporated
, Westchester, IL
(708) 345-1984
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Cimco Communications Incorporated
1901 S Meyers Rd Ste 700, Oakbrook Terrace, IL
(630) 495-7750
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Communications Partnership
2021 Midwest Rd Ste 200, Oak Brook, IL
(630) 953-8563
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Competition Telecom Incorporated
600 Enterprise Dr Ste 200, Oak Brook, IL
(630) 891-3100
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Concept Commercial Communications
898 E Roosevelt Rd, Lombard, IL
(708) 338-2255
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Covad Communications
7 W Green St, Bensenville, IL
(630) 350-1292
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Custom Floor Services
, Melrose Park, IL
(630) 790-4828
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Cypress Communications
4 Westbrook Corporate Ctr, Westchester, IL
(708) 947-7000
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Davox Communication Corporation
915 Harger Rd Ste 105, Oak Brook, IL
(630) 573-8866
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Dupage Tel-Assist
400 E 22nd St, Lombard, IL
(630) 268-5336
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Everything But Time Incorporated
, Berkeley, IL
(708) 525-9352
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Fellowship Kids Funn Phone
1420 S Meyers Rd, Lombard, IL
(630) 627-3866
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Fiber Net Telecom Group Incorporated
206 N York St Ste C, Elmhurst, IL
(630) 516-3412
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General Tele-Communications
, Barrington, IL
(847) 304-3500
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Global Naps
2001 York Rd, Oak Brook, IL
(630) 368-0723
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Global Net Corporation
1919 S Highland Ave # 1250, Lombard, IL
(630) 652-1327
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Illinois Telephone Corporation
50 E North Ave, Northlake, IL
(708) 531-0250
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Important Call
1718 W Roosevelt Rd, Broadview, IL
(708) 338-9400
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Innovative Businesses & Service
158 N Brandon Dr Unit 1a, Glendale Heights, IL
(630) 924-7544
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Intermedia Communications
1s901 Route 33, Oakbrook Terrace, IL
(630) 954-7870
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Level 3 Communications
1111 W 22nd St Ste 600, Oak Brook, IL
(630) 242-2000
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Libertybell Telephone Company
4114 Madison St, Hillside, IL
(708) 544-5850
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Litel Telecommunication
2021 Midwest Rd, Oak Brook, IL
(630) 953-8626
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Maury's Music Academic
505 S Addison Rd, Addison, IL
(630) 279-7134
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Mc Laughlin Ventures Limited
430 S 3rd St, Lombard, IL
(630) 261-9505
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McI
377 E Butterfield Rd Ste 150, Lombard, IL
(630) 769-9900
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McI
1701 S 1st Ave, Maywood, IL
(708) 450-6534
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McI
3 Westbrook Corporate Ctr, Westchester, IL
(708) 551-1300
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Metrophone Telecommunications
871 Il Route 83, Bensenville, IL
(630) 766-2150
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Mobile Fx
749 Roosevelt Rd, Glen Ellyn, IL
(630) 932-0022
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Nas Systems Incorporated
415 W Belden Ave, Addison, IL
(630) 628-2251
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Norlight Telecommunications
810 Jorie Blvd Ste 100, Oak Brook, IL
(630) 928-1157
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Norlight Telecommunications
, Oak Brook, IL
(630) 928-1157
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Oak City Service
554 Westmore Meyers Rd, Lombard, IL
(630) 916-0510
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Rch Technologies
1714 S Fairfield Ave, Lombard, IL
(630) 678-9068
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Ross, Ward - Thompson Ross & Association
7 Salt Creek Ln Ste 102, Hinsdale, IL
(630) 850-3370
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SBC
, Oak Brook, IL
(630) 954-5808
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Scs Telecom Incorporated
4849 Scott St Ste 20, Schiller Park, IL
(847) 671-4460
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Sei Information Technology
1520 Kensington Rd Ste 310, Oak Brook, IL
(630) 413-5050
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Servicios Telefonicos
116 N Church St, Addison, IL
(630) 543-2584
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Shared Technologies
1088 Thorndale Ave, Bensenville, IL
(630) 787-8050
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Stargate Communications Incorporated
2805 Butterfield Rd, Oak Brook, IL
(630) 572-2242
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Sunesys
2625 Butterfield Rd # 138, Oak Brook, IL
(630) 571-2570
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Tech Serv Group
1490 W Bernard Dr Ste E, Addison, IL
(630) 932-9321
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Telco Technologies Incorporated
1208 W Capitol Dr, Addison, IL
(630) 543-1515
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Telecom & Energy Corporation
1415 W 22nd St, Oak Brook, IL
(630) 226-4626
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Telecomm Strategies Incorporated
125 Windsor Dr Ste 105, Oak Brook, IL
(630) 573-1417
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Tip N Ring Incorporated
4n470 3rd Ave, Addison, IL
(630) 543-5172
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Vastcom
1901 S Meyers Rd Ste Ste S, Oakbrook Terrace, IL
(630) 495-7750
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Verizon Airfone
2809 Butterfield Rd, Oak Brook, IL
(630) 572-1800
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Visseo
721 E Madison St, Villa Park, IL
(630) 782-0500
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Walsh Media Incorporated
2100 Clearwater Dr, Oak Brook, IL
(630) 574-8008
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Winstar Telecommunications
1 Oakbrook Ter, Oakbrook Terrace, IL
(630) 916-7827
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Word Corporation
140 N Hemlock Ave, Wood Dale, IL
(630) 616-9906
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Xo Communications Incorporated
4 Westbrook Corporate Ctr Ste 400, Westchester, IL
(630) 522-5200
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Xo Communications Incorporated
700 E Butterfield Rd, Lombard, IL
(630) 522-5200
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