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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001104659-22-027066
Filing Date
2022-02-25
Accepted
2022-02-25 09:59:12
Documents
93
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K ccoi-20211231x10k.htm   iXBRL 10-K 2175351
2 EXHIBIT 10.26 ccoi-20211231xex10d26.htm EX-10.26 25769
3 EXHIBIT 10.27 ccoi-20211231xex10d27.htm EX-10.27 25274
4 EXHIBIT 21.1 ccoi-20211231xex21d1.htm EX-21.1 66681
5 EXHIBIT 23.1 ccoi-20211231xex23d1.htm EX-23.1 6850
6 EXHIBIT 31.1 ccoi-20211231xex31d1.htm EX-31.1 10301
7 EXHIBIT 31.2 ccoi-20211231xex31d2.htm EX-31.2 10253
8 EXHIBIT 32.1 ccoi-20211231xex32d1.htm EX-32.1 4965
9 EXHIBIT 32.2 ccoi-20211231xex32d2.htm EX-32.2 5727
15 GRAPHIC ccoi-20211231x10k002.jpg GRAPHIC 26531
  Complete submission text file 0001104659-22-027066.txt   10530765

Data Files

Seq Description Document Type Size
10 XBRL TAXONOMY EXTENSION SCHEMA ccoi-20211231.xsd EX-101.SCH 55620
11 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE ccoi-20211231_cal.xml EX-101.CAL 82426
12 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE ccoi-20211231_def.xml EX-101.DEF 347823
13 XBRL TAXONOMY EXTENSION LABEL LINKBASE ccoi-20211231_lab.xml EX-101.LAB 607528
14 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE ccoi-20211231_pre.xml EX-101.PRE 511166
87 EXTRACTED XBRL INSTANCE DOCUMENT ccoi-20211231x10k_htm.xml XML 2022874
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.: 22675218
SIC: 4899 Communications Services, NEC