
Twilio Voice Integrity is a phone-number reputation service that monitors and remediates spam labelling.
Voice Integrity is Twilio's registered calling service for diagnosing and correcting caller-ID reputation. It monitors how carriers and analytics engines label a business's outbound numbers, registers the numbers and their intended use with the reputation ecosystem, and works to remove inaccurate spam labels so calls reach customers.
The service is delivered through Twilio's Trust Hub and is resold by several contact-center and sales-engagement vendors inside their own products. Its documented use cases include outbound sales and support calling programs where answer rates depend on the displayed number not carrying a spam flag.


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


NumberGuard is Aloware's caller-ID reputation add-on, protecting outbound sales numbers from spam labelling.


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

Veriphone validates phone numbers and resolves current carriers across 243 territories.



Vonage Communications APIs enable developers to embed voice, video, messaging, and verification into applications.
OpenCNAM is a developer caller ID API mapping phone numbers to names.


Pindrop Protect scores every contact-center call for fraud risk in real time using voice, device, metadata, and behavior analysis.



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


CloudTalk Business Phone System is a cloud calling platform for sales and support teams.


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


Voice AI agent platform for building, scaling, and iterating AI-powered phone agents on carrier-grade infrastructure.


CallFire provides a text and call communication platform for business marketing and customer engagement.
Bandwidth Number Reputation Management monitors and remediates spam labelling on outbound phone numbers.

NumberGuard is Aloware's caller-ID reputation add-on, protecting outbound sales numbers from spam labelling.

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


Veriphone validates phone numbers and resolves current carriers across 243 territories.
EZCNAM is LogicTree's carrier-grade caller name delivery service for telecom and CRM systems.

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

OpenCNAM is a developer caller ID API mapping phone numbers to names.
Pindrop Protect scores every contact-center call for fraud risk in real time using voice, device, metadata, and behavior analysis.

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

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

CloudTalk Business Phone System is a cloud calling platform for sales and support teams.

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

Voice AI agent platform for building, scaling, and iterating AI-powered phone agents on carrier-grade infrastructure.

CallFire provides a text and call communication platform for business marketing and customer engagement.
