# Call402, pay as you go: Phone validation API

> Parse a phone number locally against the numbering plan using libphonenumber metadata. Returns format and number-plan validity only, current network assignment and subscriber status are not queried.

Call402's phone validation API on its Pay per call plan. It costs $5.00 per 1,000 phones. It returns 4 of the 9 key fields we check: Number, Validity, Carrier, Place.
We haven't run Call402 through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Half of the 888 plans we rank by price cost $3.376 per 1,000 phones or less. This plan costs less per 1,000 phones than 42% of the 888 plans.
[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/call402/pay-as-you-go
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://call402.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://call402.com/api/phone-lookup`
- API key: not needed
- Its API docs: https://call402.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Call402 (https://call402.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 44%
- Number: ✓
- Validity: ✓
- Carrier: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $5.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Parse a phone number locally against the numbering plan using libphonenumber metadata. Returns format and number-plan validity only, current network assignment and subscriber status are not queried.

## Data

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

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: number. Optional: country
- Method: POST
- Path: /api/phone-lookup

## About the plan

- Plan: Pay per call
- Who can get it: anyone, with no account or API key, paying each call in USDC from a wallet: x402 on Base

## The 5 fields the plan's answer can hold

number, valid, country, carrier type, data source

## Call402's plans (1)

- [Call402, pay as you go](https://datacircle.dev/validate-phone-apis/call402/pay-as-you-go/llms.txt): $5.00 per 1,000, 44% complete

## Call402's calls for this API (1)

- `POST /api/phone-lookup`: [Call402, pay as you go](https://datacircle.dev/validate-phone-apis/call402/pay-as-you-go/llms.txt)

## Call402's APIs (3)

- [Call402: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/call402/pay-as-you-go/llms.txt)
- [Call402: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/call402/pay-as-you-go/llms.txt)
- [Call402: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/call402/pay-as-you-go/llms.txt)

## Call402: phone validation API alternatives

- [CallerAPI, $25 monthly, Basic, GET /api/lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/25-monthly-basic-get-api-lookup-phone/llms.txt): $5.00 per 1,000, 78% complete, stored
- [ProWebLook, $250 pack, WhatsApp One-Time 50K, GET /wavalidation](https://datacircle.dev/validate-phone-apis/proweblook/250-pack-whatsapp-one-time-50k-get-wavalidation/llms.txt): $5.00 per 1,000, 67% complete, live
- [CheckThatPhone, $5 monthly](https://datacircle.dev/validate-phone-apis/checkthatphone/5-monthly/llms.txt): $5.00 per 1,000, 78% complete, live (deactivation date, state DNC: 7 days)
- [DataZapp, $125 pack](https://datacircle.dev/validate-phone-apis/datazapp/125-pack/llms.txt): $5.00 per 1,000, 11% 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 2026-11-05.

- https://call402.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://call402.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://call402.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://call402.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing