# Wtsp, pay as you go, Pay per request, GET /v1/carrier: Phone validation API

> Check if any number is on WhatsApp and see who's behind it, for you or your AI agent.

Wtsp's Pay per request plan for the phone validation API costs $2.00 per 1,000 phones. Wtsp's docs list 5 of the 9 fields on our checklist: Number, Formats, Type, Carrier, Place.
We haven't run Wtsp through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
We rank 1,184 plans for phone validation APIs by price. Half the plans cost $3.152 or less per 1,000 phones. This plan costs less per 1,000 phones than 55% of the 1,184 plans.
[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. [Neutrino API's On-Demand plan](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go-on-demand/llms.txt) costs the least for 10,000 phones a month: $0.80.
[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), [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) and [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-carrier
- [Phone validation API: the best of 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://wtsp.dev/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#pricing
- Request: `GET https://wtsp.dev/v1/carrier`
- API key: not needed
- Its API docs: https://wtsp.dev/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#api
- Sold by: Wtsp (https://wtsp.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 56%
- Number: ✓
- Formats: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $2.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check if any number is on WhatsApp and see who's behind it, for you or your AI agent.

## Data

- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no limit
- Use data: You are responsible for how you use the answers. You must: have a lawful reason to look up each number you send, and follow the privacy and data-protection laws that apply to you, such as the GDPR in Europe, follow anti-spam and marketing laws, and only message people who agreed to hear from you, follow WhatsApp's own terms when you contact people on WhatsApp. You must not use the service to: stalk, harass, threaten, track or spy on anyone, build profiles of people to sell, or to decide things about them such as hiring, housing, credit or insurance, send spam or messages people didn't agree to receive, commit fraud or impersonate anyone, look up a number whose owner opted out, by any route, overload, attack or reverse-engineer the service, or resell raw access to it as a competing lookup service.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone
- Method: GET
- Path: /v1/carrier

## About the plan

- Plan: Pay per request
- Who can get it: anyone

## The 12 fields the plan's answer can hold

phone number, carrier, line type, mobile line, country, country name, country flag, country calling code, location, time zones, international format, national format

## Wtsp's plans (2)

- [Wtsp, pay as you go, Pay per request, GET /v1/carrier](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-carrier/llms.txt): $2.00 per 1,000, 56% complete
- [Wtsp, top-up from $1, API key credit, GET /v1/carrier](https://datacircle.dev/validate-phone-apis/wtsp/top-up-from-1-api-key-credit-get-v1-carrier/llms.txt): $2.00 per 1,000, 56% complete

## Wtsp's calls (8)

- `GET /v1/carrier`: [Wtsp, pay as you go, Pay per request, GET /v1/carrier](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-carrier/llms.txt)
- `GET /v1/exists`: [Wtsp, pay as you go, Pay per request, GET /v1/exists](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-exists/llms.txt)
- `GET /v1/profile`: [Wtsp, pay as you go, Pay per request, GET /v1/profile](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-profile/llms.txt)
- `GET /v1/profile/full`: [Wtsp, pay as you go, Pay per request, GET /v1/profile/full](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-profile-full/llms.txt)
- `POST /v1/bulk`, Bulk carrier lookup: [Wtsp, top-up from $1, API key credit, POST /v1/bulk, Bulk carrier lookup](https://datacircle.dev/validate-phone-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-carrier-lookup/llms.txt)
- `POST /v1/bulk`, Bulk WhatsApp check: [Wtsp, top-up from $1, API key credit, POST /v1/bulk, Bulk WhatsApp check](https://datacircle.dev/validate-phone-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-check/llms.txt)
- `POST /v1/bulk`, Bulk WhatsApp profile: [Wtsp, top-up from $1, API key credit, POST /v1/bulk, Bulk WhatsApp profile](https://datacircle.dev/validate-phone-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-profile/llms.txt)
- `POST /v1/bulk`, Bulk WhatsApp profile + photo: [Wtsp, top-up from $1, API key credit, POST /v1/bulk, Bulk WhatsApp profile + photo](https://datacircle.dev/validate-phone-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-profile-photo/llms.txt)

## Wtsp's APIs (1)

- [Wtsp: phone validation API pricing, 2 plans, GET /v1/carrier](https://datacircle.dev/validate-phone-apis/wtsp/pay-as-you-go-pay-per-request-get-v1-carrier/llms.txt)

## Wtsp: phone validation API alternatives

- [1s2u, $1,000 pack](https://datacircle.dev/validate-phone-apis/1s2u/1000-pack/llms.txt): $2.00 per 1,000, 67% complete, live
- [Xverify, $1,000 pack](https://datacircle.dev/validate-phone-apis/xverify/1000-pack/llms.txt): $2.00 per 1,000, 44% complete, stored
- [2Chat, $480 yearly, Basic Plan, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/validate-phone-apis/2chat/480-yearly-basic-plan-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $2.00 per 1,000, 33% complete, live
- [BulkVS, top-up](https://datacircle.dev/validate-phone-apis/bulkvs/top-up/llms.txt): $2.00 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 2026-11-06.

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