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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001047469-19-000604
Filing Date
2019-02-22
Accepted
2019-02-22 08:53:16
Documents
91
Period of Report
2018-12-31

Document Format Files

Seq Description Document Type Size
1 10-K a2237655z10-k.htm 10-K 1217737
2 EX-21 a2237655zex-21.htm EX-21 41875
3 EX-23.1 a2237655zex-23_1.htm EX-23.1 7141
4 EX-31.1 a2237655zex-31_1.htm EX-31.1 10202
5 EX-31.2 a2237655zex-31_2.htm EX-31.2 11364
6 EX-32.1 a2237655zex-32_1.htm EX-32.1 5228
7 EX-32.2 a2237655zex-32_2.htm EX-32.2 5254
14 G1022429.JPG g1022429.jpg GRAPHIC 38163
  Complete submission text file 0001047469-19-000604.txt   8444175

Data Files

Seq Description Document Type Size
8 EX-101.INS ccoi-20181231.xml EX-101.INS 2205469
9 EX-101.SCH ccoi-20181231.xsd EX-101.SCH 50795
10 EX-101.CAL ccoi-20181231_cal.xml EX-101.CAL 69725
11 EX-101.DEF ccoi-20181231_def.xml EX-101.DEF 227673
12 EX-101.LAB ccoi-20181231_lab.xml EX-101.LAB 561434
13 EX-101.PRE ccoi-20181231_pre.xml EX-101.PRE 457052
Mailing Address 2450 N STREET, NW WASHINGTON DC 20037
Business Address 2450 N STREET, NW WASHINGTON DC 20037 2022954200
COGENT COMMUNICATIONS HOLDINGS, INC. (Filer) CIK: 0001158324 (see all company filings)

IRS No.: 522337274 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-51829 | Film No.: 19624059
SIC: 4899 Communications Services, NEC
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