# Cloudmersive, free: Phone validation API

> Validate and retrieve information for any phone number.

Cloudmersive's phone validation API on its Free Tier plan. It costs $0.00 per 1,000 phones. It returns 4 of the 9 key fields we check: Formats, Validity, Type, Place.
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/cloudmersive/free
- [Best phone validation API in 2026](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://cloudmersive.com/pricing-small-business
- Request: `POST https://api.cloudmersive.com/validate/phonenumber/basic`
- API key: with the plan, on https://cloudmersive.com/pricing-small-business
- Its API docs: https://api.cloudmersive.com/docs/validate.asp
- Sold by: Cloudmersive (https://cloudmersive.com)
- Checked: 2026-10-27

## In the answer

- Completeness: 44%
- Formats: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 543 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Validate and retrieve information for any phone number.

## Data

- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no limit
- Use data: When using the APIs, you may not (or allow those acting on your behalf to): Sublicense an API for use by a third party. Consequently, you will not create an API Client that functions substantially the same as the APIs and offer it for use by third parties. [...] Reverse engineer or attempt to extract the source code from any API or any related software, except to the extent that this restriction is expressly prohibited by applicable law. [...] Perform load testing on Cloudmersive services. Perform penetration testing on Cloudmersive services. [...] You will comply with all applicable privacy laws and regulations including those applying to PII. [...] You agree to comply with all applicable laws, regulations, and third-party rights, including without limitation those relating to data privacy, intellectual property, export controls, and AI regulatory requirements. [...] You shall not use the APIs to monitor or measure availability, performance, accuracy, or functionality for benchmarking or competitive analysis, and you shall not publish, disclose, or otherwise make available any results of benchmark, performance, or evaluation testing of the APIs without Cloudmersive's prior written consent.

## Plan

- Pay: $0
- You get: 600 requests a month
- Enough for: 600 calls a month

## Rate limit

- Per second: 1
- Concurrent: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: PhoneNumber. Optional: DefaultCountryCode
- Method: POST
- Path: /validate/phonenumber/basic

## About the plan

- Plan: Free Tier
- Who can get it: anyone

## The 8 fields the plan's answer can hold

valid, successful, phone type, E.164 format, international format, national format, country code, country

## Cloudmersive's plans (31)

- [Cloudmersive, free](https://datacircle.dev/validate-phone-apis/cloudmersive/free/llms.txt): $0.00 per 1,000, 44% complete
- [Cloudmersive, $19.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/19-99-monthly/llms.txt): $1.999 per 1,000, 44% complete
- [Cloudmersive, $49.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/49-99-monthly/llms.txt): $1.9996 per 1,000, 44% complete
- [Cloudmersive, $99.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/99-99-monthly/llms.txt): $1.9998 per 1,000, 44% complete
- [Cloudmersive, $199.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/199-99-monthly/llms.txt): $1.9999 per 1,000, 44% complete
- [Cloudmersive, $499.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/499-99-monthly/llms.txt): $2.00 per 1,000, 44% complete
- [Cloudmersive, $1,499.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/1499-99-monthly/llms.txt): $2.00 per 1,000, 44% complete
- [Cloudmersive, $1,999.99 monthly](https://datacircle.dev/validate-phone-apis/cloudmersive/1999-99-monthly/llms.txt): $2.00 per 1,000, 44% complete
- [Cloudmersive, $239.88 yearly](https://datacircle.dev/validate-phone-apis/cloudmersive/239-88-yearly/llms.txt): $1.999 per 1,000, 44% complete
- [Cloudmersive, $599.88 yearly](https://datacircle.dev/validate-phone-apis/cloudmersive/599-88-yearly/llms.txt): $1.9996 per 1,000, 44% complete
- [Cloudmersive, contact us, Medium Business Premier](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-medium-business-premier/llms.txt): 44% complete
- [Cloudmersive, contact us, Medium Business Advantage](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-medium-business-advantage/llms.txt): 44% complete
- [Cloudmersive, contact us, Enterprise](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-enterprise/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance D2.Medium](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-d2-medium/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance D2.Small](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-d2-small/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance D4.Large](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-d4-large/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance E2.Large](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-e2-large/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance E2.Medium](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-e2-medium/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance E2.XLarge](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-e2-xlarge/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance G2.Large](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-g2-large/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance G2.Medium](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-g2-medium/llms.txt): 44% complete
- [Cloudmersive, contact us, Managed Instance G2.XLarge](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-managed-instance-g2-xlarge/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 1VC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-1vc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 2EVC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-2evc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 2EVC (Government)](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-2evc-government/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 2VC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-2vc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 4EVC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-4evc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 4EVC (Government)](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-4evc-government/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 4VC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-4vc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 8EVC](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-8evc/llms.txt): 44% complete
- [Cloudmersive, contact us, On-Premises 8EVC (Government)](https://datacircle.dev/validate-phone-apis/cloudmersive/contact-us-on-premises-8evc-government/llms.txt): 44% complete

## Cloudmersive's calls for this API (1)

- `POST /validate/phonenumber/basic`: [Cloudmersive, free](https://datacircle.dev/validate-phone-apis/cloudmersive/free/llms.txt)

## Cloudmersive's APIs (2)

- [Cloudmersive: email verification API pricing, 31 plans](https://datacircle.dev/validate-email-apis/cloudmersive/free/llms.txt)
- [Cloudmersive: phone validation API pricing, 31 plans](https://datacircle.dev/validate-phone-apis/cloudmersive/free/llms.txt)

## Cloudmersive: phone validation API alternatives

- [1Lookup, $1,999 monthly, Enterprise, POST /bulk/jobs, Create a bulk job (type nt_lookup)](https://datacircle.dev/validate-phone-apis/1lookup/1999-monthly-enterprise-post-bulk-jobs-create-a-bulk-job-type-nt-lookup/llms.txt): $1.999 per 1,000, 78% complete
- [RealValidito, $1,000 pack](https://datacircle.dev/validate-phone-apis/realvalidito/1000-pack/llms.txt): $2.00 per 1,000, 78% complete
- [SilverLining, pay as you go](https://datacircle.dev/validate-phone-apis/silverlining/pay-as-you-go/llms.txt): $2.00 per 1,000, 44% complete
- [Xverify, $1,000 pack](https://datacircle.dev/validate-phone-apis/xverify/1000-pack/llms.txt): $2.00 per 1,000, 44% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-27.

- https://api.cloudmersive.com/docs/validate.asp
- https://cloudmersive.com/pricing
- https://cloudmersive.com/pricing-small-business
- https://cloudmersive.com/validate-api
- https://portal.cloudmersive.com/terms-of-service.aspx