Carrier Lookup API
Identify the assigned carrier, line type, and rate center behind a US or Canada phone number for routing and compliance.
Know the carrier behind the number
Assigned carrier, line type, and rate center for smarter routing
Carrier identification
Return the assigned-block carrier name and operating company number (OCN).
Line type with its evidence
Mobile, landline, VoIP or paging from the carrier the block was allocated to — with the basis stated, and honest where the allocation does not settle it.
Rate center & OCN
Resolve the rate center and region for the number's prefix.
Portability aware
Ported numbers are flagged: their current carrier needs a live HLR lookup.
Carrier Lookup use cases
Common workflows teams run with this data.
Message routing
Route SMS and calls based on accurate carrier and line data.
- Pick right route
- Cut failures
- Save cost
Compliance
Separate mobiles from landlines to meet outreach rules.
- Flag landlines
- Honor rules
- Reduce risk
Analytics
Segment your audience by carrier and line type.
- Segment data
- Understand base
- Target better
Start using Carrier Lookup today
One API, universal credits, and 200 free credits a month. Live in about five minutes.