# CM.com, contact us, Number Validation API credentials, POST /number-validation/v1/number/check, Number Check (HLR): Phone validation API

> Number Validation is CM.com's API for verifying and enriching phone number data. Currently it allows checking and retrieving the latest data of a phone number. Such as its validity, country, operator, active status, and ported status.

CM.com's phone validation API on its Number Validation API credentials plan. It returns 7 of the 9 key fields we check: Number, Formats, Validity, Type, Carrier, Porting and roaming, Place.
We haven't run CM.com through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
CM.com gives this plan's price on request. We rank 888 plans for phone validation APIs by price. Half the plans cost $3.376 per 1,000 phones or less.
[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), [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) and [HLR Lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-1-1m-post-hlr-lookup/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-hlr
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://www.cm.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.cm.com/number-validation/v1/number/check`, Number Check (HLR)
- API key: with the plan, on https://www.cm.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://developers.cm.com/verification/reference/number-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: CM.com (https://www.cm.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 78%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Porting and roaming: ✓
- Place: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Number Validation is CM.com's API for verifying and enriching phone number data. Currently it allows checking and retrieving the latest data of a phone number. Such as its validity, country, operator, active status, and ported status.

## Data

- Freshness: live
- What it checks: numbering plan, line in service
- Keep data: no limit
- Use data: 4.2 [...] The Client shall not send spam, unsolicited messages, fraudulent or misleading communications, or otherwise engage in unethical or unlawful use of the Services, and shall comply with CM.com’s Anti-Spam Policy. 4.3 The Client shall use the Services solely for their intended purposes as defined in the Agreement. Without limitation, the Client shall not: a. reverse engineer or otherwise attempt to gain unauthorized access to any component of the Services, b. resell, sublicense, or permit any third party to use the Services, except as expressly authorized herein, c. interfere with or attempt to disrupt the integrity, performance, or security of the Services, or of any data transmitted or processed through the Services, d. collect, extract, or harvest data from the Services, except where explicitly authorized by CM.com functionality, or e. use the Services or CM.com Confidential Information for benchmarking, competitive analysis, or the development or provision of any competing product or service.

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phoneNumber, connectionType "hlr", Content-Type header "application/json"
- Method: POST
- Path: /number-validation/v1/number/check

## About the plan

- Plan: Number Validation API credentials
- Who can get it: customers whose account manager issues production credentials

## The 21 fields the plan's answer can hold

E.164 number, international format, national format, RFC 3966 URI, line type, country, calling code, region code, operator, MCC, MNC, data source, roaming, roaming country, roaming calling code, roaming region code, roaming operator, roaming MCC, roaming MNC, valid phone number, number active

## CM.com's plans (1)

- [CM.com, contact us, Number Validation API credentials, POST /number-validation/v1/number/check, Number Check (HLR)](https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-hlr/llms.txt): 78% complete, live

## CM.com's calls (3)

- `POST /number-validation/v1/number/check`, Number Check (HLR): [CM.com, contact us, Number Validation API credentials, POST /number-validation/v1/number/check, Number Check (HLR)](https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-hlr/llms.txt)
- `POST /number-validation/v1/number/check`, Number Check (MNP): [CM.com, contact us, Number Validation API credentials, POST /number-validation/v1/number/check, Number Check (MNP)](https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-mnp/llms.txt)
- `POST /number-validation/v1/number/check`, Number Check (static): [CM.com, contact us, Number Validation API credentials, POST /number-validation/v1/number/check, Number Check (static)](https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-static/llms.txt)

## CM.com's APIs (1)

- [CM.com: phone validation API pricing, 1 plan, Number Check (HLR)](https://datacircle.dev/validate-phone-apis/cm-com/contact-us-number-validation-api-credentials-post-number-validation-v1-number-check-number-check-hlr/llms.txt)

## CM.com: phone validation API alternatives

- [Didit, contact us](https://datacircle.dev/validate-phone-apis/didit/contact-us/llms.txt): 78% complete, live
- [Loqate, contact us](https://datacircle.dev/validate-phone-apis/loqate/contact-us/llms.txt): 78% complete, live
- [Neutrino API, contact us](https://datacircle.dev/validate-phone-apis/neutrino-api/contact-us/llms.txt): 78% complete, live
- [Veriphone, contact us, Need more?, GET /v3/verify, /v3/verify, full](https://datacircle.dev/validate-phone-apis/veriphone/contact-us-need-more-get-v3-verify-v3-verify-full/llms.txt): 78% 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 2026-11-03.

- https://developers.cm.com/verification/docs/number-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developers.cm.com/verification/docs/number-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developers.cm.com/verification/docs/number-validation-sandbox?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developers.cm.com/verification/reference/number-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.cm.com/en-gb/app/legal/connect-engage/terms-and-conditions.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.cm.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing