# TMT ID, contact us, Contract, GET /live/{format}/{key}/{secret}/{number}: Phone validation API

> Find out instantly if a mobile number is assigned and in active use

TMT ID's phone validation API on its Contract plan. It returns 5 of the 9 key fields we check: Number, Validity, Type, Carrier, Porting and roaming.
We haven't run TMT ID through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
TMT ID 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/tmt-id/contact-us-contract-get-live-format-key-secret-number
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://tmtid.com/contact-us/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.tmtvelocity.com/live/{format}/{key}/{secret}/{number}`
- API key: with the plan, on https://tmtid.com/contact-us/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://tmtid.com/developer/tmt_live_v1.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: TMT ID (https://tmtid.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 56%
- Number: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Porting and roaming: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Find out instantly if a mobile number is assigned and in active use

## Data

- Freshness: live
- Countries: Worldwide
- What it checks: carrier, line in service
- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: format "JSON", number
- Method: GET
- Path: /live/{format}/{key}/{secret}/{number}

## About the plan

- Plan: Contract
- Who can get it: customers who contact TMT ID, their API credentials delivered by email

## The 13 fields the plan's answer can hold

number, status, status message, transaction ID, line type, network name, network MCC, network MNC, carrier identification code, IMSI prefix, ported, subscriber present, error code

## TMT ID's plans (1)

- [TMT ID, contact us, Contract, GET /live/{format}/{key}/{secret}/{number}](https://datacircle.dev/validate-phone-apis/tmt-id/contact-us-contract-get-live-format-key-secret-number/llms.txt): 56% complete, live

## TMT ID's calls (2)

- `GET /live/{format}/{key}/{secret}/{number}`: [TMT ID, contact us, Contract, GET /live/{format}/{key}/{secret}/{number}](https://datacircle.dev/validate-phone-apis/tmt-id/contact-us-contract-get-live-format-key-secret-number/llms.txt)
- `POST /v3/`: [TMT ID, contact us, Contract, POST /v3/](https://datacircle.dev/validate-phone-apis/tmt-id/contact-us-contract-post-v3/llms.txt)

## TMT ID's APIs (1)

- [TMT ID: phone validation API pricing, 1 plan, GET /live/{format}/{key}/{secret}/{number}](https://datacircle.dev/validate-phone-apis/tmt-id/contact-us-contract-get-live-format-key-secret-number/llms.txt)

## TMT ID: phone validation API alternatives

- [Foxentry, contact us, Above 100 000 req / month, POST /phone/validate, Validate phone number (extended)](https://datacircle.dev/validate-phone-apis/foxentry/contact-us-above-100-000-req-month-post-phone-validate-validate-phone-number-extended/llms.txt): 56% complete, live
- [HLR Lookups, contact us, Postpaid account, POST /hlr-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/contact-us-postpaid-account-post-hlr-lookups/llms.txt): 56% complete, live
- [Data8, contact us, Bespoke deals, POST /PhoneValidation/IsValid.json, IsValid](https://datacircle.dev/validate-phone-apis/data8/contact-us/llms.txt): 56% complete, live
- [Byteplant, contact us](https://datacircle.dev/validate-phone-apis/byteplant/contact-us/llms.txt): 56% 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 2026-11-04.

- https://tmtid.com/contact-us/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/developer/tmt_live_v1.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/faq/live-faqs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/faq/verify-faqs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/live/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tmtid.com/verify/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing