Phone Number Intelligence API

NPA-NXX data for developers.

Look up carrier, rate center, and location info for any North American phone number. Free tier with 100 daily lookups.

No credit card required. Start building in minutes.

Live Demo

// Try looking up a phone number
GET /v1/lookup/2392001234

// Response includes carrier, rate center, and location

Everything you need for phone number data

Official NPA-NXX data from NANPA and CNAC, delivered through a modern API built for developers.

US & Canada Coverage

Complete NPA-NXX data from official NANPA and CNAC sources. Updated daily.

< 100ms Response

Lightning-fast lookups powered by our global edge network.

Official Data Sources

Data sourced directly from government numbering administrators.

Developer-First API

Simple REST API with comprehensive documentation and code examples.

Daily Updates

Automated ingestion ensures your data is always current.

Free Tier

100 lookups per day, 1,000 per month. No credit card required.

280K+

NPA-NXX Records

< 100ms

Response Time

398

Area Codes

100

Free Daily Lookups

Simple API, powerful data

One request. All the phone number data you need. View full documentation →

api.telco.dev

curl https://api.telco.dev/v1/lookup/2392001234 \
  -H "X-API-Key: tk_live_your_api_key"

{
  "number": "2392001234",
  "npa": "239",
  "nxx": "200",
  "line": "1234",
  "carrier": {
    "ocn": "6664",
    "name": "CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL",
    "type": "WIRELESS"
  },
  "location": {
    "rate_center": "FTMYERS",
    "state": "FL",
    "country": "US"
  },
  "status": "ASSIGNED",
  "source": "NANPA"
}