Numverify

Numverify is a REST API that validates phone numbers globally. It returns carrier information, geographic location, and line type (mobile, landline, VoIP) for any number you submit.

What it does

Send a phone number to Numverify's API, and it checks against telecom databases to confirm validity, identify the carrier (e.g., Verizon, Vodafone), and determine the country and region. It also flags numbers that are invalid or disconnected.

Best for

• Developers building signup forms that need to verify user phone numbers
• E-commerce platforms reducing fraud by validating billing phone numbers
• Marketing teams cleaning phone lists before SMS campaigns

Strengths

• Global coverage with validation for 200+ countries
• Real-time carrier and location data for each number
• Simple REST API with JSON responses, easy to integrate

• Number validation — Checks if a phone number is valid, reachable, and formatted correctly
• Carrier lookup — Returns the telecom carrier (e.g., AT&T, T-Mobile, Orange)
• Location data — Provides country, region, and city for landline numbers
• Line type detection — Identifies if the number is mobile, landline, VoIP, or toll-free
• Batch processing — Validate multiple numbers in a single API call
• HTTPS encryption — All requests are secured with SSL