# Abstract API, free: Cached phone validation API

> Check any phone number in real time. The Phone Validation API tells you if a number is real, which carrier and line type it uses, and where it's registered.

Abstract API's cached phone validation API on its Free plan. It costs $0.00 per 1,000 phones. It returns 8 of the 9 key fields we check: Number, Formats, Validity, Type, Carrier, Place, Risk, Owner.

- This page: https://datacircle.dev/cached-phone-validation-apis/abstract-api/free
- Get it: https://www.abstractapi.com/pricing
- Its API docs: https://docs.abstractapi.com/api/phone-intelligence#validation-endpoint
- Sold by: Abstract API (https://www.abstractapi.com)
- Checked: 2026-10-18

## In the answer

- Completeness: 89%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓
- Risk: ✓
- Owner: ✓

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: Orthogonal: paid $5.00

## Charges

- Repeat free: never
- Per: call
- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check any phone number in real time. The Phone Validation API tells you if a number is real, which carrier and line type it uses, and where it's registered.

## Data

- Freshness: 1 day
- Keep data: no limit, but no collection, database or directory compiled from it without Abstract's written permission
- Use data: You may not access or use the Site for any purpose other than that for which we make the Site available. Without limiting the foregoing, you agree not to: [...] 3. Use the Site or the Content to advertise or offer to sell goods and services or to identify any household, street address, or individual. 4. License, sell, resell, lease, distribute, or otherwise commercially exploit as a standalone product, or make available to any third party, the Site, or any Content not owned by you (unless the Content is expressly licensed to you for such purpose). [...] 13. Use the Site or the Content to spam, phish, pharm, pretext, spider, crawl, or scrape. [...] 17. Use the Site or the Content for any illegal or unauthorized purpose. 18. Use the Site or the Content: for any form of debt collection, as the sole source of data for hard background check purposes, to determine eligibility for a government license or benefit, for any purpose prohibited by applicable data privacy and security laws, for the benefit of any one political candidate, political party, political campaign, or political advocacy group affiliated exclusively with or formed to benefit any one of the foregoing, [...] in connection with any purpose covered by the Fair Credit Reporting Act (15 U.S.C. Sec. 1681 et seq (“FCRA”)) [...], for the preparation of a Consumer Report or in such a manner that may cause such data to be characterized as a Consumer Report, in connection with establishing a consumer’s eligibility for credit or insurance to be used primarily for personal, family, or household purposes [...], for the purpose of evaluating a consumer for employment, promotion, reassignment, or retention as an employee, for any tenancy verification or in connection with any application to rent real property, [...] for any other purpose under the FCRA.

## Plan

- Pay: $0
- You get: 100 requests a month
- Enough for: 100 calls a month

## Rate limit

- Batch: 1

## Speed

- Median: 0.05 s

## The call

- You send: phone. Optional: country
- Method: GET
- Path: /v1/

## About the plan

- Plan: Free
- Who can get it: anyone 18 or older

## The 29 fields the plan's answer can hold

phone number, international format, local format, carrier, line type, mobile country code, mobile network code, country, country code, country calling code, region, city, time zone, valid, line status, VoIP, minimum number age, SMS domain, SMS email, caller name, caller type, risk level, disposable, abuse detected, breach count, first breach date, last breach date, breached domain, breach date

## Abstract API's plans (15)

- [Abstract API, free](https://datacircle.dev/cached-phone-validation-apis/abstract-api/free/llms.txt): $0.00 per 1,000, 89% complete, 1 day
- [Abstract API, $19 monthly, Professional, 2,000 requests / month](https://datacircle.dev/cached-phone-validation-apis/abstract-api/19-monthly-professional-2000-requests-month/llms.txt): $9.50 per 1,000, 89% complete, 1 day
- [Abstract API, $19 monthly, Standard, 3,000 requests / month](https://datacircle.dev/cached-phone-validation-apis/abstract-api/19-monthly-standard-3000-requests-month/llms.txt): $6.333 per 1,000, 67% complete, 1 day
- [Abstract API, $19 monthly, Starter, 5,000 requests / month](https://datacircle.dev/cached-phone-validation-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt): $3.80 per 1,000, 67% complete, 1 day
- [Abstract API, $209 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/209-yearly/llms.txt): $3.483 per 1,000, 67% complete, 1 day
- [Abstract API, $429 yearly, Professional, 60,000 requests / year](https://datacircle.dev/cached-phone-validation-apis/abstract-api/429-yearly-professional-60000-requests-year/llms.txt): $7.15 per 1,000, 89% complete, 1 day
- [Abstract API, $429 yearly, Starter, 180,000 requests / year](https://datacircle.dev/cached-phone-validation-apis/abstract-api/429-yearly-starter-180000-requests-year/llms.txt): $2.383 per 1,000, 67% complete, 1 day
- [Abstract API, $649 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/649-yearly/llms.txt): $3.606 per 1,000, 67% complete, 1 day
- [Abstract API, $759 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/759-yearly/llms.txt): $2.108 per 1,000, 67% complete, 1 day
- [Abstract API, $1,089 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/1089-yearly/llms.txt): $1.815 per 1,000, 67% complete, 1 day
- [Abstract API, $1,199 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/1199-yearly/llms.txt): $3.331 per 1,000, 67% complete, 1 day
- [Abstract API, $1,749 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/1749-yearly/llms.txt): $2.915 per 1,000, 89% complete, 1 day
- [Abstract API, $2,189 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/2189-yearly/llms.txt): $1.216 per 1,000, 67% complete, 1 day
- [Abstract API, $5,489 yearly](https://datacircle.dev/cached-phone-validation-apis/abstract-api/5489-yearly/llms.txt): $3.049 per 1,000, 89% complete, 1 day
- [Abstract API, contact us](https://datacircle.dev/cached-phone-validation-apis/abstract-api/contact-us/llms.txt): 89% complete, 1 day

## Abstract API's calls (1)

- `GET /v1/`: [Abstract API, free](https://datacircle.dev/cached-phone-validation-apis/abstract-api/free/llms.txt)

## Abstract API's APIs (3)

- [Abstract API: cached company enrichment API pricing, 4 plans](https://datacircle.dev/cached-company-enrichment-apis/abstract-api/free/llms.txt)
- [Abstract API: email verification API pricing, 32 plans](https://datacircle.dev/validate-email-apis/abstract-api/free/llms.txt)
- [Abstract API: cached phone validation API pricing, 15 plans](https://datacircle.dev/cached-phone-validation-apis/abstract-api/free/llms.txt)

## Abstract API: cached phone validation API alternatives

- [RealValidito, free](https://datacircle.dev/cached-phone-validation-apis/realvalidito/free/llms.txt): $0.00 per 1,000, 67% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-18.

- https://docs.abstractapi.com/api/phone-intelligence
- https://www.abstractapi.com/api/phone-validation-api
- https://www.abstractapi.com/legal/dpa
- https://www.abstractapi.com/legal/legal
- https://www.abstractapi.com/pricing