# Contact Verify, pay as you go: Phone validation API

> Contact Verify (verify-x402) phone lookup: carrier line type (mobile, landline, VoIP, toll-free) and E.164 format. Detect VoIP/burner numbers in sign-up fraud checks, confirm SMS-capable mobiles. $0.02.

Contact Verify's Pay per call plan for the phone validation API costs $20.00 per 1,000 phones. We check each provider's docs for 9 fields. Contact Verify's docs list 6: Number, Formats, Validity, Type, Carrier, Place.
We haven't run Contact Verify through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
We rank 1,266 plans for phone validation APIs by price. Half the plans cost $3.55 or less per 1,000 phones. This plan costs less per 1,000 phones than 14% of the 1,266 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/contact-verify/pay-as-you-go
- [Phone validation API: the best of 50+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://getcontactverify.com/verify/phone`
- API key: not needed
- Its API docs: https://getcontactverify.com/docs/phone-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Contact Verify (https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 67%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $20.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Contact Verify (verify-x402) phone lookup: carrier line type (mobile, landline, VoIP, toll-free) and E.164 format. Detect VoIP/burner numbers in sign-up fraud checks, confirm SMS-capable mobiles. $0.02.

## Data

- Freshness: live
- What it checks: numbering plan, carrier
- 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: phone. Optional: country
- Method: POST
- Path: /verify/phone

## About the plan

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

## The 11 fields the plan's answer can hold

phone number, national format, country code, calling country code, valid, validation errors, line type, carrier, MCC, MNC, error code

## Contact Verify's plans (1)

- [Contact Verify, pay as you go](https://datacircle.dev/validate-phone-apis/contact-verify/pay-as-you-go/llms.txt): $20.00 per 1,000, 67% complete, live

## Contact Verify's calls for this API (1)

- `POST /verify/phone`: [Contact Verify, pay as you go](https://datacircle.dev/validate-phone-apis/contact-verify/pay-as-you-go/llms.txt)

## Contact Verify's APIs (2)

- [Contact Verify: email verification API pricing, 2 plans](https://datacircle.dev/validate-email-apis/contact-verify/free/llms.txt)
- [Contact Verify: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/contact-verify/pay-as-you-go/llms.txt)

## Contact Verify: phone validation API alternatives

- [ProWebLook, $9.99 pack, WhatsApp One-Time 500, GET /wavalidation](https://datacircle.dev/validate-phone-apis/proweblook/9-99-pack-whatsapp-one-time-500-get-wavalidation/llms.txt): $19.98 per 1,000, 67% complete, live
- [2Chat, $40 monthly, Single Plan, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/validate-phone-apis/2chat/40-monthly-single-plan-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $20.00 per 1,000, 33% complete, live
- [Postcoder, £1,261 monthly](https://datacircle.dev/validate-phone-apis/postcoder/1261-monthly/llms.txt): $20.178 per 1,000, 56% complete, live
- [Listar, top-up from €1,000, Silver, POST /search/verify-whatsapp](https://datacircle.dev/validate-phone-apis/listar/top-up-from-1000-silver-post-search-verify-whatsapp/llms.txt): $20.255 per 1,000, 22% 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 2026-11-08.

- https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://getcontactverify.com/docs/email-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://getcontactverify.com/docs/phone-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://getcontactverify.com/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://getcontactverify.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://getcontactverify.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing