Numlookup
Phone number validation and carrier lookup API with global coverage
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Phone
- Data source
- public-apis
- Documentation / URL
- https://numlookupapi.com
Overview
Numlookup provides phone validation — key-based (a missing key returns 401, verified).
Quick Start
Validate (replace YOUR_KEY):
curl "https://api.numlookupapi.com/v1/validate/14158586273?apikey=YOUR_KEY"Authentication
- Register at numlookupapi.com → API key.
- Send it as the
apikeyquery parameter (missing → 401, verified).
Rate Limits & Notes
- Free tier with limits (check the docs); paid plans scale.
- Carrier lookup.
FAQ
Is Numlookup free? Free tier with limits; more is paid.
Why 401? An API key is required (verified).
What’s the auth style?
apikey query parameter.
More in Phone
| API | Auth | HTTPS | CORS | |
|---|---|---|---|---|
| CheckThatPhone Real-time phone validation API for US & Canada: carrier and line type from live carrier data, portability, deliverability, GeoIP and TCPA litigator scrub | API Key | unknown | Unknown | ↗ |
| Cloudmersive Validate Validate international phone numbers | API Key | Yes | Yes | ↗ |
| MobileAPI Smartphone, tablet, and wearable device specifications | API Key | Yes | Unknown | ↗ |
| NumlookupAPI Worldwide Phone Number Lookup & Verification API | API Key | Yes | Unknown | ↗ |
| Numverify Phone number validation | API Key | Yes | Unknown | ↗ |