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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001047469-18-000988
Filing Date
2018-02-23
Accepted
2018-02-23 08:53:51
Documents
91
Period of Report
2017-12-31

Document Format Files

Seq Description Document Type Size
1 10-K a2234130z10-k.htm 10-K 1207435
2 EX-21.1 a2234130zex-21_1.htm EX-21.1 41145
3 EX-23.1 a2234130zex-23_1.htm EX-23.1 4077
4 EX-31.1 a2234130zex-31_1.htm EX-31.1 11401
5 EX-31.2 a2234130zex-31_2.htm EX-31.2 10621
6 EX-32.1 a2234130zex-32_1.htm EX-32.1 5226
7 EX-32.2 a2234130zex-32_2.htm EX-32.2 5212
14 G78308.JPG g78308.jpg GRAPHIC 37516
  Complete submission text file 0001047469-18-000988.txt   7707656

Data Files

Seq Description Document Type Size
8 EX-101.INS ccoi-20171231.xml EX-101.INS 1866352
9 EX-101.SCH ccoi-20171231.xsd EX-101.SCH 50899
10 EX-101.CAL ccoi-20171231_cal.xml EX-101.CAL 73480
11 EX-101.DEF ccoi-20171231_def.xml EX-101.DEF 224120
12 EX-101.LAB ccoi-20171231_lab.xml EX-101.LAB 560443
13 EX-101.PRE ccoi-20171231_pre.xml EX-101.PRE 458612
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.: 18634745
SIC: 4899 Communications Services, NEC
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