Lumen vs Cogent
Lumen and Cogent both deliver dedicated fiber, but they're designed for different customers. Lumen has broader access infrastructure and faster repair times. Cogent runs one of the largest Tier-1 backbones globally and offers the strongest 100% uptime SLA via downtime credits — but their access network is narrower.
Side by side
| Feature | Lumen | Cogent |
|---|---|---|
| Service type | Dedicated fiber | Dedicated fiber over their backbone |
| Symmetrical speeds | Yes | Yes |
| Typical 500/500 MRC | ✓$449-479/mo | $549/mo+ (varies by building) |
| SLA uptime | 99.99% | ✓100% (with downtime credits) |
| SLA credit structure | Pro-rata credit | ✓1-day credit per hour of downtime, up to 30 days/mo |
| Backbone reach | Tier-1, broad peering | ✓Tier-1, one of largest by AS |
| Access network | ✓Strong nationwide | Limited to on-net buildings |
| Best for | General business, broad coverage | Buildings already on Cogent fiber, cost-sensitive enterprises |
When to choose Lumen
Your building isn't on Cogent's network, you want the broader access footprint, and faster repair commitments. Lumen is the safer default for most businesses.
When to choose Cogent
Your building is on Cogent's fiber (verify with us), you want the strongest SLA-credit terms, and you're connecting to systems on the Cogent backbone (which has aggressive peering arrangements).
The honest bottom line
Cogent is fantastic if your building is on-net — the SLA structure is genuinely better than most. But access is the limiting factor. Most of our customers end up on Lumen because Cogent simply doesn't reach their address. Always check both.
Get the right one for your address
Pricing depends on your specific building. Tell Byte where you are and we'll pull live channel rates for both carriers (and any other competitors at your address).
Common questions about this comparison
How do I know which one serves my building?
Both maintain different fiber footprints. The fastest way to check is type your address into Byte above — we run a real serviceability check across all carriers and tell you who actually serves you, not just who claims coverage on their map.
Are these prices accurate for my city?
The numbers in the table are typical channel rates from current rate cards, but actual pricing varies by market. We always pull a live quote for your specific address and verify with the carrier before you sign anything.
What about other carriers like Spectrum, Frontier, Cogent?
We work with 200+ carriers. This page just zeroes in on these two. When you start a quote with Byte, we show you everything available at your address — not just the carriers in this comparison.