# Twilio, contact us: Phone validation API

> Validate number format and look up provider and device type to reach verified users via voice and text.

Twilio's phone validation API on its Contact sales plan.

- This page: https://datacircle.dev/validate-phone-apis/twilio/contact-us
- Get it: https://www.twilio.com/en-us/user-authentication-identity/pricing/lookup
- Its API docs: https://www.twilio.com/docs/lookup/v2-api#making-a-request
- Sold by: Twilio (https://www.twilio.com)
- Checked: 2026-10-14

## Price

- Billing: contact

## In their words

- Their pitch: Validate number format and look up provider and device type to reach verified users via voice and text.

## Data

- Freshness: live
- Keep data: no limit
- Use data: any business use, but Line Type Intelligence, SIM Swap, Call Forwarding, Reassigned Number and Identity Match only to validate a consumer's identity, avert fraud or authenticate a transaction: not for marketing or selling, consumer reports, or credit, insurance or employment eligibility, the service not resold or offered to third parties on its own

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone number, Fields, CountryCode, FirstName, LastName, AddressLine1, AddressLine2, City, State, PostalCode, AddressCountryCode, NationalId, DateOfBirth, LastVerifiedDate, VerificationSid, PartnerSubId
- Method: GET
- Path: /v2/PhoneNumbers/{PhoneNumber}

## About the plan

- Plan: Contact sales
- Who can get it: businesses and professionals only

## The 7 fields in the plan's answer

E.164 format, local format, country code, country calling code, valid, invalid reason, lookup URL

## Twilio's plans (3)

- [Twilio, free](https://datacircle.dev/validate-phone-apis/twilio/free/llms.txt): $0.00 per 1,000, live
- [Twilio, top-up](https://datacircle.dev/validate-phone-apis/twilio/top-up/llms.txt): $0.00 per 1,000, live
- [Twilio, contact us](https://datacircle.dev/validate-phone-apis/twilio/contact-us/llms.txt): live

## Twilio's calls (1)

- `GET /v2/PhoneNumbers/{PhoneNumber}`: [Twilio, contact us](https://datacircle.dev/validate-phone-apis/twilio/contact-us/llms.txt)

## Similar plans of other providers

- [Byteplant, contact us](https://datacircle.dev/validate-phone-apis/byteplant/contact-us/llms.txt): live
- [HLR Lookup, contact us](https://datacircle.dev/validate-phone-apis/hlr-lookup/contact-us/llms.txt): live
- [Neutrino API, contact us](https://datacircle.dev/validate-phone-apis/neutrino-api/contact-us/llms.txt): live
- [RealPhoneValidation, contact us, Enterprise & platform integrations](https://datacircle.dev/validate-phone-apis/realphonevalidation/contact-us-enterprise-platform-integrations/llms.txt): live

## Sources

From each provider's own pricing page and docs. We read this row from these pages on 2026-10-14.

- https://www.twilio.com/docs/lookup/lookup-sim-swap
- https://www.twilio.com/docs/lookup/v2-api
- https://www.twilio.com/docs/lookup/v2-api/call-forwarding
- https://www.twilio.com/docs/lookup/v2-api/caller-name
- https://www.twilio.com/docs/lookup/v2-api/formatting-validation
- https://www.twilio.com/docs/lookup/v2-api/identity-match
- https://www.twilio.com/docs/lookup/v2-api/line-status
- https://www.twilio.com/docs/lookup/v2-api/line-type-intelligence
- https://www.twilio.com/docs/lookup/v2-api/reassigned-number
- https://www.twilio.com/docs/lookup/v2-api/sim-swap
- https://www.twilio.com/docs/lookup/v2-api/sms-pumping-risk
- https://www.twilio.com/en-us/legal/service-country-specific-terms
- https://www.twilio.com/en-us/legal/service-country-specific-terms/identity-verification
- https://www.twilio.com/en-us/legal/tos
- https://www.twilio.com/en-us/user-authentication-identity/lookup
- https://www.twilio.com/en-us/user-authentication-identity/pricing/lookup