# Twilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup: Phone validation API

> Validate and reformat phone numbers automatically to match national and global dialing standards for optimal deliverability.

Twilio's phone validation API on its Free trial plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Formats, Validity, Place, Owner.
You get up to 100 calls in all.
We rank 614 plans by price. [Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) and [Listar](https://datacircle.dev/validate-phone-apis/listar/top-up-from-10-starter-post-search-verify-whatsapp/llms.txt) are the best phone validation API providers in our benchmark.

- This page: https://datacircle.dev/validate-phone-apis/twilio/free-trial-get-v2-phonenumbers-phonenumber-basic-lookup
- [Best phone validation API in 2026](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://www.twilio.com/en-us/user-authentication-identity/pricing/lookup
- Request: `GET https://lookups.twilio.com/v2/PhoneNumbers/{PhoneNumber}`, Basic Lookup
- API key: with the plan, on 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: 2026-10-28

## In the answer

- Completeness: 56%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Place: ✓
- Owner: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: SMS messages: 100 · WhatsApp messages: 100 · Voice calls (minutes): 75 · Emails: 3,000 · Verify verifications: 40

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Validate and reformat phone numbers automatically to match national and global dialing standards for optimal deliverability.

## Data

- Freshness: stored
- What it checks: numbering plan
- Keep data: no limit
- Use data: Twilio Lookup API - SIM Swap and Line Type Intelligence, Lookup Call Forwarding, Reassigned Number, Identity Match [...]: Customer may use the Identity Verification Services solely to validate a consumer’s identity for the purpose of averting fraudulent transactions, performing identity verification, authenticating commercial transactions initiated by a consumer with Customer, or for such other purposes as may be expressly set forth in the applicable Identity Verification Services Order Form(s). Customer will not use the Identity Verification Services or Identity Verification Data (a) for marketing purposes or to sell products or services, (b) to create a consumer report or allow use by a consumer reporting agency for the purpose of creating a consumer report, or (c) for verifying worthiness or eligibility for credit, insurance, or employment [...] You will: [...] (b) not transfer, resell, lease, license, or otherwise make available the Services to third parties (except to make the Services available to your End Users) or offer them on a standalone basis, (c) use the Services only in accordance with this Agreement, the Twilio Acceptable Use Policy, the applicable Documentation, any applicable Order Form(s), and applicable law or regulation

## Plan

- Pay: $0
- Enough for: 100 calls, once
- Expires: 30 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone number. Optional: 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: Free trial
- Who can get it: new accounts of businesses and professionals, in the trial's countries, for 30 days

## The 10 fields the plan's answer can hold

E.164 format, local format, country code, country calling code, valid, invalid reason, lookup URL, error code, caller name, caller type

## Twilio's plans (3)

- [Twilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup](https://datacircle.dev/validate-phone-apis/twilio/free-trial-get-v2-phonenumbers-phonenumber-basic-lookup/llms.txt): $0.00 per 1,000, 56% complete, stored
- [Twilio, top-up, Pay-as-you-go, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup](https://datacircle.dev/validate-phone-apis/twilio/top-up-pay-as-you-go-get-v2-phonenumbers-phonenumber-basic-lookup/llms.txt): $0.00 per 1,000, 67% complete, stored
- [Twilio, contact us, Contact sales, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup](https://datacircle.dev/validate-phone-apis/twilio/contact-us-contact-sales-get-v2-phonenumbers-phonenumber-basic-lookup/llms.txt): 44% complete, stored

## Twilio's calls (3)

- `GET /v2/PhoneNumbers/{PhoneNumber}`, Basic Lookup: [Twilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup](https://datacircle.dev/validate-phone-apis/twilio/free-trial-get-v2-phonenumbers-phonenumber-basic-lookup/llms.txt)
- `GET /v2/PhoneNumbers/{PhoneNumber}`, Line Status: [Twilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Line Status](https://datacircle.dev/validate-phone-apis/twilio/free/llms.txt)
- `GET /v2/PhoneNumbers/{PhoneNumber}`, Line Type Intelligence: [Twilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Line Type Intelligence](https://datacircle.dev/validate-phone-apis/twilio/free-trial-get-v2-phonenumbers-phonenumber-line-type-intelligence/llms.txt)

## Twilio's APIs (1)

- [Twilio: phone validation API pricing, 3 plans, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup](https://datacircle.dev/validate-phone-apis/twilio/free-trial-get-v2-phonenumbers-phonenumber-basic-lookup/llms.txt)

## Twilio: phone validation API alternatives

- [HLR Lookups, free, 100 free lookups, POST /nt-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/free-100-free-lookups-post-nt-lookups/llms.txt): $0.00 per 1,000, 67% complete, stored
- [CallerAPI, free trial, GET /api/lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/free-trial-get-api-lookup-phone/llms.txt): $0.00 per 1,000, 78% complete, stored
- [seven.io, free, GET /api/lookup/format](https://datacircle.dev/validate-phone-apis/seven-io/free-get-api-lookup-format/llms.txt): $0.00 per 1,000, 56% complete, stored
- [HLR Lookup, free, 200 free credits, POST /apiv2/validate](https://datacircle.dev/validate-phone-apis/hlr-lookup/free-200-free-credits-post-apiv2-validate/llms.txt): $0.00 per 1,000, 56% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-28.

- 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/trials
- https://www.twilio.com/docs/usage/trials/try-out-lookup
- 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