# Temsor, free: Phone validation API

> Validates and normalises any phone number to E.164, with structural checks for every country calling code.

Temsor's Free plan for the phone validation API costs $0.00 per 1,000 phones. We check each provider's docs for 9 fields. Temsor's docs list 4: Formats, Validity, Type, Place.
We haven't run Temsor through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 1,398 plans for phone validation APIs by price. Half the plans cost $3.518 or less per 1,000 phones. [See the best free phone validation API plan.](https://datacircle.dev/best-phone-validation-api.txt)
[GuGuData's CNY 124 (about $19) monthly plan](https://datacircle.dev/validate-phone-apis/gugudata/cny-124-monthly/llms.txt) is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 (about $19) monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows. [Keyronne's pay-as-you-go plan](https://datacircle.dev/validate-phone-apis/keyronne/pay-as-you-go/llms.txt) costs the least for 10,000 phones a month: $0.20.
[Trestle](https://datacircle.dev/validate-phone-apis/trestle/top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api/llms.txt), [Signal House](https://datacircle.dev/validate-phone-apis/signal-house/top-up-from-10/llms.txt) and [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/temsor/free
- [Phone validation API in 2026: the best of 60+ compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.temsor.com/v1/phone/validate`
- API key: with the plan, on https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://api.temsor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#phone_validate
- Sold by: Temsor (https://temsor.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-08

## 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: 42 other Temsor calls

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Validates and normalises any phone number to E.164, with structural checks for every country calling code.

## Data

- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 500 credits a month
- Enough for: 500 calls a month

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone. Optional: defaultCountry
- Method: POST
- Path: /v1/phone/validate

## About the plan

- Plan: Free
- Who can get it: businesses, for use in their trade or business (the terms: a digital service offered to businesses, not to consumers)

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

input, valid, reason, E.164 format, national format, country code, country name, line type, Turkish area code, Turkish province, originally allocated to, portability notice, warnings

## Temsor's plans (4)

- [Temsor, free](https://datacircle.dev/validate-phone-apis/temsor/free/llms.txt): $0.00 per 1,000, 44% complete
- [Temsor, $10 pack](https://datacircle.dev/validate-phone-apis/temsor/10-pack/llms.txt): $0.50 per 1,000, 44% complete
- [Temsor, $25 pack](https://datacircle.dev/validate-phone-apis/temsor/25-pack/llms.txt): $0.455 per 1,000, 44% complete
- [Temsor, $50 pack](https://datacircle.dev/validate-phone-apis/temsor/50-pack/llms.txt): $0.417 per 1,000, 44% complete

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

- `POST /v1/phone/validate`: [Temsor, free](https://datacircle.dev/validate-phone-apis/temsor/free/llms.txt)

## Temsor's APIs (2)

- [Temsor: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/temsor/free/llms.txt)
- [Temsor: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/temsor/free/llms.txt)

## Temsor: phone validation API alternatives

- [ProWebLook, $499.20 yearly](https://datacircle.dev/validate-phone-apis/proweblook/499-20-yearly/llms.txt): $0.416 per 1,000, 67% complete, stored
- [ZelNum, $1,000 pack, Pay as you go, $1,000 top-up, POST /detect, BAND Number Checker](https://datacircle.dev/validate-phone-apis/zelnum/1000-pack-pay-as-you-go-1000-top-up-post-detect-band-number-checker/llms.txt): $0.417 per 1,000, 11% complete
- [Ihuyi, CNY 2,800 pack](https://datacircle.dev/validate-phone-apis/ihuyi/cny-2800-pack/llms.txt): $0.419 per 1,000, 22% complete
- [ShuxunTech, CNY 14,000 pack](https://datacircle.dev/validate-phone-apis/shuxuntech/cny-14000-pack/llms.txt): $0.419 per 1,000, 22% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://api.temsor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://api.temsor.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://temsor.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://temsor.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://temsor.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing