# SignupVet, free: Phone validation API

> Valid number, country and line type. Premium-rate numbers are blocked, toll-free ones flagged.

SignupVet's phone validation API on its Free plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Validity, Type, Carrier, Place, Risk.
We haven't run SignupVet through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 888 plans for phone validation APIs by price. Half the plans cost $3.376 per 1,000 phones or less.
[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/signupvet/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://www.signupvet.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#pricing
- Request: `POST https://www.signupvet.com/verify/phone`
- API key: with the plan, on https://www.signupvet.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#pricing
- Its API docs: https://www.signupvet.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: SignupVet (https://www.signupvet.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 56%
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓
- Risk: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Combined signup score · Email check · IP check

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Valid number, country and line type. Premium-rate numbers are blocked, toll-free ones flagged.

## Data

- What it checks: numbering plan
- Keep data: no limit
- Use data: You may use SignupVet only to protect your own products from fraud and abuse, and only in line with applicable law. In particular you must: have a legal basis for sending us your users' data and inform them in your privacy notice that signups are checked for fraud prevention, not use the service to harass, discriminate against or profile people beyond fraud prevention, not resell or redistribute the service or its results as a data product, scrape it [...], not overload, probe or circumvent the limits and security of the service. [...] Check people who are not your users. Do not run purchased, scraped or third-party lists through the service, build marketing or contact lists, enrich data for outreach, or look up people to track, profile or harass them. [...] Resell or repackage the service. Do not resell, sublicense or publish SignupVet results as a data product, and do not offer the API to others as part of your own lookup or verification service without a written agreement with us.

## Plan

- Pay: $0
- You get: 250 requests a month
- Enough for: 250 calls a month

## Rate limit

- Per second: 10
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone. Optional: country_hint, ip, context.timezone, context.user_agent, context.referrer, context.sign_up_source, context.accept_language
- Method: POST
- Path: /verify/phone

## About the plan

- Plan: Free
- Who can get it: businesses, trades and professions, not consumers

## The 15 fields the plan's answer can hold

request ID, status, risk score, risk level, recommendation, reason code, normalized phone, format valid, country, line type, carrier, VoIP, confidence, data sources, latency

## SignupVet's plans (5)

- [SignupVet, free](https://datacircle.dev/validate-phone-apis/signupvet/free/llms.txt): $0.00 per 1,000, 56% complete
- [SignupVet, $15 pack](https://datacircle.dev/validate-phone-apis/signupvet/15-pack/llms.txt): $15.00 per 1,000, 56% complete
- [SignupVet, $49 monthly](https://datacircle.dev/validate-phone-apis/signupvet/49-monthly/llms.txt): $9.80 per 1,000, 56% complete
- [SignupVet, $199 monthly](https://datacircle.dev/validate-phone-apis/signupvet/199-monthly/llms.txt): $7.96 per 1,000, 56% complete
- [SignupVet, contact us](https://datacircle.dev/validate-phone-apis/signupvet/contact-us/llms.txt): 56% complete

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

- `POST /verify/phone`: [SignupVet, free](https://datacircle.dev/validate-phone-apis/signupvet/free/llms.txt)

## SignupVet's APIs (2)

- [SignupVet: email verification API pricing, 5 plans](https://datacircle.dev/validate-email-apis/signupvet/free/llms.txt)
- [SignupVet: phone validation API pricing, 5 plans](https://datacircle.dev/validate-phone-apis/signupvet/free/llms.txt)

## SignupVet: phone validation API alternatives

- [Veriphone, $199 pack, 250,000 credits, GET /v3/verify, /v3/verify, full](https://datacircle.dev/validate-phone-apis/veriphone/199-pack-250000-credits-get-v3-verify-v3-verify-full/llms.txt): $7.96 per 1,000, 78% complete, live
- [ProWebLook, $3.99 monthly](https://datacircle.dev/validate-phone-apis/proweblook/3-99-monthly/llms.txt): $7.98 per 1,000, 67% complete, stored
- [1Lookup, $7,990 yearly, Professional (annual), POST /bulk/jobs, Create a bulk job (type mnp_lookup)](https://datacircle.dev/validate-phone-apis/1lookup/7990-yearly-professional-annual-post-bulk-jobs-create-a-bulk-job-type-mnp-lookup/llms.txt): $7.99 per 1,000, 78% complete
- [Foxentry, top-up, Pay as you go, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-basic/llms.txt): $8.00 per 1,000, 56% complete, stored

## 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://www.signupvet.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.signupvet.com/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.signupvet.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.signupvet.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.signupvet.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing