Datacircle

CheckNumber.AI pricing and alternatives: phone validation API, POST /v1/phone

CheckNumber.AI's sitellms.txtBest phone validation API in 2026

Is CheckNumber.AI yours? Write to us about this page. We invite selected tool providers to our WhatsApp group.

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 CheckNumber.AI's 3 plans
Call: POST /v1/phone one of CheckNumber.AI's 27 calls for this API
API: Phone validation API one of CheckNumber.AI's 2 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 5 of the 9 key fields we check. Number, Validity, Type, Carrier, Place.
  • Nothing to pay. You get 1,000 results, which pay for CheckNumber.AI's other calls. This call costs none of them. CheckNumber.AI limits how many calls you get, but doesn't say how many.
  • One call. You send number and country to POST /v1/phone. The call returns whether the number is valid.
  • Who can get it: anyone who contacts support. Keep data: no limit. Use data: with conditions.

CheckNumber.AI: phone validation API alternatives

We list other providers' plans closest to this plan in price per 1,000 phones.

This planCheckNumber.AI, free trial, POST /v1/phoneAbstract API, freeListar, free, Start for free, POST /search/verify-phone-ownershipHLR Lookups, free, 100 free lookups, POST /nt-lookupsseven.io, free test credit, GET /api/lookup/hlr
$ per 1,000 phones$0.00$0.00$0.00$0.00$0.00
Completeness56%89%67%67%78%
Billingfreefreefreefreefree
Pay$0$0€0$0$0
Enough fornot published100 calls a month100 results100 results, oncenot published
Freshnessunknown1 daylivestoredlive
Who can get itanyone who contacts supportanyone 18 or olderthe first account created in an organisation, with an email address that is not disposable, from a sign-up country within Listar's commercial scopenew accountsnew accounts of traders: the customer assures that he is a trader and that the short messages are sent as part of his business

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.

  1. checknumber.ai/llms.txt
  2. checknumber.ai/pricing
  3. checknumber.ai/terms
  4. docs.checknumber.ai
  5. docs.checknumber.ai/global-phone-carrier-inquiry/

Product details

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

  • Number
  • Formats, not in the answer
  • Validity
  • Type
  • Carrier
  • Porting and roaming, not in the answer
  • Place
  • Risk, not in the answer
  • Owner, not in the answer
Price
$ per 1,000 phones$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Not found
$ per 1,000$0.00
In their words
Their pitchGlobal phone carrier inquiry, billions of records, timely updates, high accuracy.
Data
CountriesWorldwide
What it checksnumbering plan
Keep datano limit
Use data"This license is granted solely for Your internal business purposes" (3.1), "You agree not to (a) license, sublicense, sell, resell, transfer, assign, distribute, or otherwise commercially exploit or make available to any third party the Service in any way, except as expressly permitted by these Terms or an Agreement, (b) modify or make derivative works based upon the Service, (c) reverse engineer, decompile, or disassemble the Service or attempt to gain unauthorized access to the Service or its related systems or networks, or (d) use the Service for any purpose or in any manner that is unlawful (including in violation of the PDPA) or prohibited by these Terms. Furthermore, You agree that any phone numbers or associated data obtained through the Service shall not be used by You or any third party acting on Your behalf to: (i) contact any individual without their prior, express, and informed consent for such contact, in accordance with PDPA requirements, (ii) send unsolicited commercial communications (spam), bulk messages, or any messages in violation of applicable anti-spam laws (including the Singapore Spam Control Act) and the PDPA, (iii) send harassing, abusive, threatening, defamatory, obscene, or otherwise unlawful communications, or (iv) engage in any other practices that violate the privacy or data protection rights of individuals or any applicable laws or regulations, including the PDPA" (3.2)
Plan
Pay$0
You get1,000 results
Rate limit
Batch1
Speed
Answerin the call
The call
You sendnumber, country
MethodPOST
Path/v1/phone
About the plan
PlanFree trial
Who can get itanyone who contacts support
The 10 fields the plan's answer can hold

status, country code, national number, valid number, line type, E.164 number, region code, location, time zones, carrier

Best GTM APIs