Re-ranked by oldest: 1. Verizon Communications | Year founded: 1870 2. Cox Communications | Year founded: 1962 3. (tie) OSHEAN Inc. | Year founded: 1999 3. (tie) Towerstream Corp. | Year founded: 1999 FOOTNOTE 1 OSHEAN provides services to nonprofits, higher education, K-12, libraries, health care and government sectors only. Want to join? For more
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