# Twilio, top-up: 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 Pay-as-you-go plan, $0.00 per 1,000 phones.
The median plan costs $3.313 per 1,000. This plan costs less than 96% of the 97 priced plans.

- This page: https://datacircle.dev/validate-phone-apis/twilio/top-up
- 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

- $ per 1,000: $0.00
- Billing: pay first

## Charges

- Per: call
- Extra fields: carrier, line type, mobile country code, mobile network code, error code: +$8.00 · caller name, caller type, error code: +$10.00 · line status, error code: +$7.00 · first name match, last name match, address match, city match, state match, postal code match, address country match, national ID match, date of birth match, identity match score, error code, error message: +$100.00 · last verified date, reassigned, error code: +$20.00

## Not found

- $ per 1,000: $0.00

## 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

## Plan

- Enough for: no limit

## 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: Pay-as-you-go
- Who can get it: businesses and professionals only

## The 13 fields in the plan's answer

E.164 format, local format, country code, country calling code, valid, invalid reason, lookup URL, carrier risk category, number blocked, number blocked date, number blocked in the last 3 months, SMS pumping risk score, error code

## 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, top-up](https://datacircle.dev/validate-phone-apis/twilio/top-up/llms.txt)

## Similar plans of other providers

- [Byteplant, free](https://datacircle.dev/validate-phone-apis/byteplant/free/llms.txt): $0.00 per 1,000, live
- [HLR Lookup, free](https://datacircle.dev/validate-phone-apis/hlr-lookup/free/llms.txt): $0.00 per 1,000, live
- [RealPhoneValidation, free](https://datacircle.dev/validate-phone-apis/realphonevalidation/free/llms.txt): $0.00 per 1,000, live
- [Telnyx, $10 pack](https://datacircle.dev/validate-phone-apis/telnyx/10-pack/llms.txt): $1.50 per 1,000, 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/docs/usage/tutorials/how-to-use-your-free-trial-account
- 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