Cogent(CCOI) - 2025 Q3 - Quarterly Results

FOR IMMEDIATE RELEASE Cogent Contacts: For Public Relations: For Investor Relations: Jocelyn Johnson John Chang + 1 (202) 295-4299 + 1 (202) 295-4212 jajohnson@cogentco.com investor.relations@cogentco.com Cogent Communications Reports Third Quarter 2025 Results Exhibit 99.1 · Service revenue was $241.9 million for Q3 2025 and was $246.2 million for Q2 2025. o On-net revenue increased by 2.2% from Q2 2025 to Q3 2025. § On-net revenue was $135.3 million for Q3 2025 and $132.3 million for Q2 2025. o Wavelength ...