Cogent Grows Optical Business with Sprint Network Integration, Reports Q2 2025 Earnings
Cogent Communications reported Q2 2025 service revenue of $246.2 million, down slightly from the prior quarter and 5.5% year-over-year. Despite the top-line softness, the company showed strong growth in its wavelength business—revenue surged 150% from a year ago to $9.1 million—fueled largely by the integration of fiber assets from the acquired Sprint wireline business. EBITDA rose 10.8% sequentially to $48.5 million, while adjusted EBITDA hit $73.5 million, marking a margin of 29.8%. The company also approved its 52nd consecutive quarterly dividend increase and expanded its stock buyback program by $100 million.
A major industry trend playing out in Cogent’s results is the monetization of legacy telecom infrastructure for high-capacity optical services. The Sprint wireline acquisition, which closed in May 2023, enabled Cogent to expand its optical wavelength offerings to 938 data centers across the U.S., Canada, and Mexico, using mostly owned fiber. Under the IP Transit Services Agreement with T-Mobile, Cogent is receiving $700 million over four years, including $25 million in Q2 2025, providing a stable funding stream to support the transformation. On-net connections increased slightly while off-net and non-core connections continued to decline, reflecting Cogent’s ongoing migration toward owned infrastructure.
Included in the Sprint deal were significant physical assets such as dark fiber, metro rings, and data center access points, which Cogent has been converting into on-net optical services. Additionally, a commercial agreement with T-Mobile for colocation and IP transit services began contributing to revenue, though lower than initial post-close levels. Cogent also recorded a gain in IPv4 leasing revenue, now reaching $15.3 million, up 40% year-over-year, as demand for scarce address space continues to grow.
- Q2 2025 service revenue: $246.2M; down 0.3% QoQ, down 5.5% YoY
- Wavelength revenue: $9.1M; up 27% QoQ, up 150% YoY
- Adjusted EBITDA: $73.5M with a 29.8% margin
- IP Transit Agreement with T-Mobile: $700M over 4.5 years; $25M received in Q2
- IPv4 leasing revenue: $15.3M; up 40.1% YoY
- On-net buildings: 3,529 as of June 30, 2025
- Dividend: Raised to $1.015/share; 52nd straight increase
- Buyback program: Expanded by $100M through 2026
“The integration of Sprint’s wireline assets has significantly accelerated our ability to deliver optical wavelength services over a predominantly owned infrastructure,” said Dave Schaeffer, CEO of Cogent.
🌐 Why it Matters: Cogent’s acquisition of Sprint’s long-haul assets exemplifies the industry’s pivot from legacy voice and MPLS services toward high-bandwidth, optical IP networks. The deal not only strengthens Cogent’s Tier 1 backbone but also positions it to compete more aggressively in data center interconnection, wavelength services, and direct cloud connectivity—key growth areas as enterprises modernize their WAN architectures.
🌐 We’re tracking the latest developments in optical networking and IP backbone infrastructure. Follow our ongoing coverage at: https://convergedigest.com/category/optical/
