# Proofwire, free: Phone validation API

> Numbering plan, line type, live carrier query

Proofwire's Free plan for the phone validation API costs $0.00 per 1,000 phones. Proofwire's docs list 3 of the 9 fields on our checklist: Type, Carrier, Place.
We haven't run Proofwire through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 1,143 plans for phone validation APIs by price. Half the plans cost $2.998 per 1,000 phones or less. [See how many phone validation API plans are free.](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.
[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/proofwire/free
- [Phone validation API: the best of 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://proofwire.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://proofwire.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://proofwire.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Proofwire (https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 33%
- Type: ✓
- Carrier: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Email Verify · Email Find · IP Address Verify · Company Profile

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Numbering plan, line type, live carrier query

## Data

- Freshness: live
- What it checks: numbering plan, carrier
- Keep data: no limit
- Use data: Checking whether contact details you already hold are real and reachable: cleaning a list before you send to it, screening a signup form, deciding whether a number is worth dialling, scoring an address at checkout. [...] What it is not for: Discovering contact details you do not have. [...] Validating a list you have no right to hold. [...] Sending to people who have not agreed to hear from you. [...] Calling numbers on a Do Not Call registry. [...] Surveillance or profiling of a specific individual. [...] Reselling the raw results as a data product. [...] Have a lawful basis for the data you send us, use the service within the acceptable use policy, and keep your API keys secret.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 calls, once
- Expires: never

## Speed

- Answer: in the call

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Free
- Who can get it: anyone

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

verdict, confidence, risk, evidence, provider trace, credits charged, country code, line type, carrier, portability, recent SIM swap, do-not-call listing

## Proofwire's plans (1)

- [Proofwire, free](https://datacircle.dev/validate-phone-apis/proofwire/free/llms.txt): $0.00 per 1,000, 33% complete, live

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

- Docs behind sign-up: [Proofwire, free](https://datacircle.dev/validate-phone-apis/proofwire/free/llms.txt)

## Proofwire's APIs (5)

- [Proofwire: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/proofwire/free/llms.txt)
- [Proofwire: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/proofwire/free/llms.txt)
- [Proofwire: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/proofwire/free/llms.txt)
- [Proofwire: IP company lookup API pricing, 1 plan](https://datacircle.dev/ip-company-lookup-apis/proofwire/free/llms.txt)
- [Proofwire: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/proofwire/free/llms.txt)

## Proofwire: phone validation API alternatives

- [Foxentry, free trial, POST /phone/validate, Validate phone number (extended)](https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-extended/llms.txt): $0.00 per 1,000, 56% complete, live
- [HLR Lookups, free, 100 free lookups, POST /hlr-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/free-100-free-lookups-post-hlr-lookups/llms.txt): $0.00 per 1,000, 56% complete, live
- [seven.io, free test credit, GET /api/lookup/hlr](https://datacircle.dev/validate-phone-apis/seven-io/free-test-credit-get-api-lookup-hlr/llms.txt): $0.00 per 1,000, 78% complete, live
- [HLR Lookup, free, 200 free credits, POST /batches/{id}/sourcejson, Bulk uploads via API](https://datacircle.dev/validate-phone-apis/hlr-lookup/free-200-free-credits-post-batches-id-sourcejson/llms.txt): $0.00 per 1,000, 89% 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 2026-11-07.

- https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/compare/twilio-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/integrations?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/legal/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/legal/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/mcp?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://proofwire.app/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing