Twilio pricing and alternatives: phone validation API, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup

Twilio's site llms.txt Best phone validation API in 2026

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56% complete: 5 of the 9 key fields we checkSee the 9 fields

$0.00per 1,000 phonesWe rank 614 plans by price. Botoi's $199 monthly plan 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, Abstract API and Listar are the best phone validation API providers in our benchmark.

Plan: Free trial one of Twilio's 3 plans

Call: GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup one of Twilio's 3 calls

API: Phone validation API Twilio's only API

Phone validation API

About this item

Stored. Twilio may skip the carrier and answer from stored data. Twilio doesn't say how old the data is.
5 of the 9 key fields we check. Number, Formats, Validity, Place, Owner.
Nothing to pay. You get up to 100 calls in all. Unused credit expires after 30 days.
One call. You send phone number to GET /v2/PhoneNumbers/{PhoneNumber}. The call returns whether the number is valid.
Who can get it: with conditions. Keep data: no limit. Use data: with conditions.

Twilio: phone validation API alternatives

We list other providers' plans closest to this plan in price per 1,000 phones. Each plan in the table gives stored data.

	This planTwilio, free trial, GET /v2/PhoneNumbers/{PhoneNumber}, Basic Lookup	HLR Lookups, free, 100 free lookups, POST /nt-lookups	CallerAPI, free trial, GET /api/lookup/{phone}	seven.io, free, GET /api/lookup/format	HLR Lookup, free, 200 free credits, POST /apiv2/validate
$ per 1,000 phones	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	56%	67%	78%	56%	56%
Billing	free	free	free	free	free
Pay	$0	$0	$0	$0	$0
Enough for	100 calls, once	100 results, once	100 calls	not published	not published
Freshness	stored	stored	stored	stored	stored
Who can get it	new accounts of businesses and professionals, in the trial's countries, for 30 days	new accounts	anyone can apply: "our AI scores your profile and decides to give it to you or not. Or maybe you'll need to jump on a call with us to discuss it further"	any seven account, traders only: the customer assures that he is a trader and that the short messages are sent as part of his business	new accounts with a business email address

Every phone validation API provider we score, ranked

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.

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

Number
Formats
Validity
Type, not in the answer
Carrier, not in the answer
Porting and roaming, not in the answer
Place
Risk, not in the answer
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