# Proofwire, free: Company enrichment API

> Mail provider, SPF/DMARC/DKIM posture, domain age, registrar, EU VAT registry

Proofwire's Free plan for the company enrichment API costs $0.00 per 1,000 companies. Proofwire's docs list 1 of the 13 fields on our checklist: Headquarters.
We haven't run Proofwire through [our company enrichment API benchmark](https://datacircle.dev/best-company-enrichment-api.txt) yet.
This plan is free. We rank 2,362 plans for company enrichment APIs by price. Half the plans cost $8.704 per 1,000 companies or less. [See the best free company enrichment API plan.](https://datacircle.dev/best-company-enrichment-api.txt)
[ROIC.ai's $29 monthly plan](https://datacircle.dev/company-enrichment-apis/roic-ai/29-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. ROIC.ai's company enrichment API costs nothing beyond the plan price.
[APIs Peru's PEN 30 (about $9) monthly plan](https://datacircle.dev/company-enrichment-apis/apis-peru/pen-30-monthly/llms.txt) covers any number of companies in Peru only. APIs Peru's PEN 30 (about $9) monthly plan costs less up front than ROIC.ai's $29 monthly plan.
[ROIC.ai](https://datacircle.dev/company-enrichment-apis/roic-ai/89-monthly/llms.txt), [Intrinio](https://datacircle.dev/company-enrichment-apis/intrinio/150-monthly/llms.txt) and [GLEIF](https://datacircle.dev/company-enrichment-apis/gleif/free/llms.txt) are the best company enrichment API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/company-enrichment-apis/proofwire/free
- [Company enrichment API: the best of 190+ providers compared](https://datacircle.dev/best-company-enrichment-api.txt)
- Get it: https://proofwire.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-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=company-enrichment-api-pricing
- Its API docs: https://proofwire.app/changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- Sold by: Proofwire (https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 8%
- Headquarters: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

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

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Mail provider, SPF/DMARC/DKIM posture, domain age, registrar, EU VAT registry

## Data

- 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: 20 calls, once
- Expires: never

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Free
- Who can get it: anyone

## The 10 fields the plan's answer can hold

mail provider, SPF, DMARC, DKIM, domain registration date, registrar, legal name, address, sources, not established

## Proofwire's plans (1)

- [Proofwire, free](https://datacircle.dev/company-enrichment-apis/proofwire/free/llms.txt): $0.00 per 1,000, 8% complete

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

- Docs behind sign-up: [Proofwire, free](https://datacircle.dev/company-enrichment-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: company enrichment API alternatives

- [Latinfo, free, GET /pe/ruc/{ruc}](https://datacircle.dev/company-enrichment-apis/latinfo/free-get-pe-ruc-ruc/llms.txt): $0.00 per 1,000, 15% complete, stored
- [ROIC.ai, free](https://datacircle.dev/company-enrichment-apis/roic-ai/free/llms.txt): $0.00 per 1,000, 54% complete
- [data.ct.gov, free, With an app token](https://datacircle.dev/company-enrichment-apis/data-ct-gov/free-with-an-app-token/llms.txt): $0.00 per 1,000, 38% complete, 1 day
- [Brreg, free](https://datacircle.dev/company-enrichment-apis/brreg/free/llms.txt): $0.00 per 1,000, 38% complete, live
- [Outris, free](https://datacircle.dev/company-enrichment-apis/outris/free/llms.txt): $0.00 per 1,000, 0% 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 2026-11-07.

- https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/integrations?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/legal/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/legal/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://proofwire.app/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing