Veriphone is a phone number validation and carrier lookup API covering validity, carrier, line type, and country across 243 territories. Its two products are Phone Validation and Current Carrier Lookup, the latter resolving the serving carrier from portability registries with a ported flag.
The service offers bulk CSV validation and an instant API used by developers and data teams for list cleaning and lead scoring. Veriphone provides monthly free credits with one-time and subscription credit pricing.

TeleFortress CNAM Lookup registers caller names and validates inbound numbers in real time.


Twilio Lookup verifies phone numbers for identity, reachability, and fraud risk signals.

Melissa Phone Verification checks mobile and landline numbers for accuracy and deliverability.


FullEnrich Mobile Phone Enrichment returns direct mobile numbers for business contacts, verified against carrier networks.


Twilio Voice Integrity is a phone-number reputation service that monitors and remediates spam labelling.



User verification and multi-factor authentication APIs for signup and login security.

TeleFortress CNAM Lookup registers caller names and validates inbound numbers in real time.
Twilio Lookup verifies phone numbers for identity, reachability, and fraud risk signals.


Bandwidth Number Reputation Management monitors and remediates spam labelling on outbound phone numbers.



Vonage Network APIs expose advanced 5G network capabilities to developers for building next-generation applications.


ContactOut Cloud Phone Dialer is a browser-based virtual phone for calling verified prospects and candidates.


Vonage Communications APIs enable developers to embed voice, video, messaging, and verification into applications.


Salesfinity SmartEnrich is the contact data enrichment product that waterfall-qualifies phone numbers and validates them at dial time.
Melissa Phone Verification checks mobile and landline numbers for accuracy and deliverability.
FullEnrich Mobile Phone Enrichment returns direct mobile numbers for business contacts, verified against carrier networks.

Twilio Voice Integrity is a phone-number reputation service that monitors and remediates spam labelling.

Predicts fraud risk and verifies ownership strength for a phone number.

User verification and multi-factor authentication APIs for signup and login security.

Bandwidth Number Reputation Management monitors and remediates spam labelling on outbound phone numbers.

EZCNAM is LogicTree's carrier-grade caller name delivery service for telecom and CRM systems.
Vonage Network APIs expose advanced 5G network capabilities to developers for building next-generation applications.

ContactOut Cloud Phone Dialer is a browser-based virtual phone for calling verified prospects and candidates.

Programmable voice APIs for making, receiving, and managing phone calls globally.

Vonage Communications APIs enable developers to embed voice, video, messaging, and verification into applications.

Salesfinity SmartEnrich is the contact data enrichment product that waterfall-qualifies phone numbers and validates them at dial time.
