Dark Fiber

Dark Fiber for Business & Data Centers

Your own fiber strands, your own equipment, unlimited upgrade path. We find who actually has dark fiber on your route — and negotiate the lease or IRU. Free to you.

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Dark fiber is the endgame of network control: you lease the physical strands and light them with your own equipment, so capacity upgrades are a hardware swap instead of a carrier negotiation. It's the right answer for a specific kind of buyer — and knowing whether that's you, and who actually has strands on your route, is most of the battle. Dark fiber inventory is rarely published; we ask every operator directly.

Metro dark fiber

Strand pairs between offices, data centers, and cell sites within a metro — the most common and most available use case.

Long-haul routes

Inter-city dark fiber and IRUs for operators and large enterprises building their own backbone.

Lit vs dark analysis

Sometimes a wavelength or EPL beats dark fiber on cost. We model both before you commit.

What we help with

Who it's for

How we help

Give us the route end-points. We canvass every fiber operator with plant in the area — including regional operators who never publish inventory — and come back with real availability, lease pricing, and IRU options. Metro strand pairs commonly run $500–$2,000+/month per pair depending on distance and market, with wide variance; long-haul is priced per route-mile. If dark isn't available or the economics don't work, we'll show you what a wave or EPL costs on the same route so the decision is a comparison, not a guess. Free to you.

Providers we compare

We're vendor-neutral. Depending on your needs and locations, the providers we compare include:

The provider compensates us, so our guidance is free to you — see how it works.

Frequently asked questions

What is dark fiber and how is it different from lit services?

Dark fiber is unlit strands you lease and light with your own optics — you own the capacity decisions. Lit services (waves, EPL, DIA) are circuits the carrier operates for you. Dark trades operational responsibility for unlimited scalability and long-run cost control.

What does dark fiber cost in 2026?

Metro strand pairs commonly run $500–$2,000+/month per pair depending on route, distance, and market competition; long-haul routes and IRUs are priced per route-mile. Pricing varies more than any other telecom product — which is exactly why competitive sourcing matters.

Who should NOT lease dark fiber?

If you don't have (or want) the engineering to run your own optical gear, a managed wavelength or EPL delivers most of the benefit with none of the operational load. We'll tell you honestly which side of that line you're on.

Is dark fiber available at my location?

Availability is route-specific and rarely published. We check directly with every operator that has plant in your area — start with your address and we'll confirm within days.

Is it really free?

Yes — the provider you select compensates us, so our sourcing and negotiation cost you nothing.

Not sure where to start?

Tell us what you have today and what you're trying to fix. We'll compare your options across providers — free, with no obligation.

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Explore more: all services · wavelength · Layer 2 transport · IP transit · check availability at your address.