# Kleber, free: Phone validation API

> Stop wasting time, energy, and money calling disconnected phone numbers.

Kleber's phone validation API on its Free credit plan. It costs $0.00 per 1,000 phones. It returns 1 of the 9 key fields we check: Validity.
We haven't run Kleber 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/kleber/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://datatools.com.au/datatools-kleber-guides?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://kleber.datatoolscloud.net.au/KleberWebService/DtKleberService.svc/ProcessQueryStringRequest`
- API key: with the plan, on https://datatools.com.au/datatools-kleber-guides?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://discover.datatools.com.au/method-description/?MethodName=DataTools.Verify.PhoneNumber.ReachTel.VerifyPhoneNumberIsConnected&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Kleber (https://datatools.com.au?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 11%
- Validity: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: DataTools.Verify.Email.BriteVerify.VerifyEmail · DataTools.Verify.Address.AuPaf.VerifyAddress · DataTools.Repair.Address.AuPaf.RepairAddress · DataTools.Verify.Bsb.AuApca.VerifyBsb · DataTools.Parse.Address.Au.Parse · DataTools.Parse.PersonName.Parse · DataTools.Parse.PhoneNumber.Au.ParseAndFormat · DataTools.Enhance.Address.Geocoding.Gnaf.Au.Append · DataTools.Enhance.Address.Geocoding.AcxiomStandard.Append · DataTools.Capture.Address.Predictive.AuPaf.SearchAddress · DataTools.Capture.Address.Predictive.AuPaf.RetrieveAddress · DataTools.Capture.Address.Predictive.Gnaf.SearchAddress · DataTools.Capture.Address.Predictive.Gnaf.RetrieveAddress · DataTools.Capture.Address.Predictive.Gnaf.RetrieveGeocode · DataTools.Capture.Address.Predictive.IntPca.SearchAddress · DataTools.Capture.Address.Predictive.IntPca.RetrieveAddress · DataTools.Capture.Address.Predictive.NzPaf.SearchAddress · DataTools.Capture.Address.Predictive.NzKms.SearchAddress · DataTools.Capture.Address.Predictive.NzKms.RetrieveAddress · DataTools.Capture.Address.Predictive.Nzad.SearchAddress

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Stop wasting time, energy, and money calling disconnected phone numbers.

## Data

- Freshness: live
- Countries: Australia, New Zealand
- What it checks: line in service
- Keep data: no period set, on request it must cease use and return or destroy the Confidential Information it holds (7(c)), which includes data supplied by the Supplier (7(d))
- Use data: non-exclusive, non-transferable, revocable basis, for the Customer's internal business purposes [...] The Customer agrees that it shall not (and shall not assist or allow a third party) to do or attempt to do any of the following: (i) reproduce, transfer, distribute, market, publish, sell, re-sell, rent, lease out, sub-license, supply, commercialise, modify, adapt, disassemble, merge, decompile, copy, reverse engineer or create derivative works of the Services, Service Output or the Documentation or the mechanism through which the Services are made available to the Customer, (ii) remove, alter, or obscure any copyright notices, trademarks, or other proprietary rights notices included in the Services or Documentation, (iii) use the Services to create any product or service which competes with any component of the Services, (iv) undertake any data cleansing activities unless otherwise permitted under this Agreement, (v) extract or attempt to extract the Validation Data from the Services, or (vi) perform any act or omission to circumvent the restrictions in this Agreement.

## Plan

- Pay: $0
- You get: $50

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: Method "DataTools.Verify.PhoneNumber.ReachTel.VerifyPhoneNumberIsConnected", PhoneNumber
- Method: GET
- Path: /KleberWebService/DtKleberService.svc/ProcessQueryStringRequest

## About the plan

- Plan: Free credit
- Who can get it: a company registering a Kleber account with its name and company details: its SaaS Agreement is with the Company specified in the order, for its internal business purposes

## The 4 fields the plan's answer can hold

status code, status description, response, RID number

## Kleber's plans (3)

- [Kleber, free](https://datacircle.dev/validate-phone-apis/kleber/free/llms.txt): $0.00 per 1,000, 11% complete, live
- [Kleber, top-up](https://datacircle.dev/validate-phone-apis/kleber/top-up/llms.txt): 11% complete, live
- [Kleber, contact us](https://datacircle.dev/validate-phone-apis/kleber/contact-us/llms.txt): 11% complete, live

## Kleber's calls (1)

- `GET /KleberWebService/DtKleberService.svc/ProcessQueryStringRequest`: [Kleber, free](https://datacircle.dev/validate-phone-apis/kleber/free/llms.txt)

## Kleber's APIs (2)

- [Kleber: email verification API pricing, 3 plans](https://datacircle.dev/validate-email-apis/kleber/free/llms.txt)
- [Kleber: phone validation API pricing, 3 plans](https://datacircle.dev/validate-phone-apis/kleber/free/llms.txt)

## Kleber: 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
- [Infobip, free](https://datacircle.dev/validate-phone-apis/infobip/free/llms.txt): $0.00 per 1,000, 56% 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 2026-11-05.

- https://datatools.com.au/datatools-kleber-guides?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://datatools.com.au/email-validation-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://datatools.com.au/phone-validation/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://datatools.com.au/resources/legal/software-datatools-legal?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://media.datatools.com.au/datatools_website/legal/datatools_agreements/DataTools-SaaS-Agreement.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing