Search fiber lit buildings by address

CarrierFinder shows which carriers are on-net or near-net at any U.S. commercial address — from a database of 5.4M fiber lit buildings, 3.2M fiber route miles, and 115M serviceable locations.

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Try CarrierFinder for free → https://search.carrierfinder.com/signup

See how fiber maps work → /fiber-maps

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What is a fiber lit building?

A fiber lit building is a commercial site (or data center) where a carrier has already brought fiber into the building and can typically deliver service without a long off-net build. Buyers and consultants usually care about three statuses:

• On-net — fiber is in the building with that carrier

• Near-net — fiber is nearby; a short lateral or extension may be needed

• Off-net / unknown — no confirmed lit presence; other carriers or technologies may still apply

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CarrierFinder is built so MSPs, consultants, agencies, and enterprises can answer "who covers this address?" in one search instead of calling carriers one by one.

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Search 5.4M fiber lit buildings

Enter a U.S. address and see lit-building and carrier coverage in one place — including fiber, telco, cableco, and related broadband signals.

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5.4M  Fiber lit buildings

3.2M  Fiber route miles

115M  Serviceable Locations

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Start a free search → https://search.carrierfinder.com/signup

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On-net vs near-net

On-net usually means faster installs and clearer pricing. Near-net can still win if the build is short and the carrier is competitive. CarrierFinder surfaces both so you can compare options before you request quotes.

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Built for MSPs and consultants

• Instant address search across carriers

• Fiber lit building and route visibility

• One-click pricing requests — we handle carrier quoting

• No cost to you for brokerage support; carriers compensate us

Learn more → /partner

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Fiber lit buildings + fiber maps

Lit buildings answer "is this site lit?" Fiber maps answer "where does the route run?" Use both together.

See fiber maps → /fiber-maps

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Request pricing

Found carriers at the address? Request pricing in-app.

Request pricing → /quote-request

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FAQ

How is this different from the FCC National Broadband Map?

The FCC map is a public broadband availability check. CarrierFinder adds proprietary lit-building and route data plus a quoting desk for commercial connectivity.

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Do I need a paid plan to search?

You can sign up and start searching for free. Professional plans add seats, widget, API, and batch tools.

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Can carriers contribute their lit buildings?

Yes. Providers can upload lit-building lists and KMZ routes at no cost.

Learn more → /carriers

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Ready to search fiber lit buildings?

Try CarrierFinder for free → https://search.carrierfinder.com/signup