# Addressfinder, free: Phone validation API

> Make sure the numbers you are collecting are active and connected

Addressfinder's phone validation API on its Free trial plan. It costs $0.00 per 1,000 phones. It returns 4 of the 9 key fields we check: Number, Validity, Type, Place.
In [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt), Addressfinder's best plan scores 37.7 out of 100.
This plan is free. We rank 768 plans for phone validation APIs by price. Half the plans cost $3.60 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/addressfinder/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://addressfinder.com/nz/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.addressfinder.io/api/phone/v1/verification`
- API key: with the plan, on https://addressfinder.com/nz/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://addressfinder.com/nz/docs/api/phone-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Addressfinder (https://addressfinder.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 44%
- Number: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Address Verification API · Email Verification API

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Make sure the numbers you are collecting are active and connected

## Data

- Freshness: live
- What it checks: numbering plan, line in service
- Keep data: no limit
- Use data: You may use the Services and Plugins with websites that you own or control, with intranets or other business systems where included in Your Plan, and to verify data for your business purposes, subject to the applicable Data Terms. [...] You may access the APIs for the Service via the applicable Plugins and, if expressly included in Your Plan, via direct API calls to https://api.addressfinder.io. You are not permitted to access the APIs for the Service in any other way. [...] You must use the Services and Plugins for lawful purposes only and never misuse them. You must never copy, modify, distribute, resell, lease, transfer or sub-license, or create derivative works from, all or any part of the Services or Plugins. [...] You must never access or use the Services or any Plugin for any purpose related to building a product or service which competes with the Services or any Plugin or has similar features or functionality. [...] You must never use the Services or any Plugin in any way which may be perceived as damaging to our reputation or goodwill or may bring us into disrepute or harm.

## Plan

- Pay: NZ$0
- You get: 1,000 credits
- Enough for: 1,000 calls, once
- Expires: 30 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 1.34 s

## The call

- You send: phone_number, default_country_code. Optional: domain, mobile_only, timeout, allowed_country_codes, verify_format_only
- Method: GET
- Path: /api/phone/v1/verification

## About the plan

- Plan: Free trial
- Who can get it: anyone, for development and testing only (not production use), one Addressfinder account per business

## The 13 fields the plan's answer can hold

success, verified, line type, line status, line status reason, country code, calling code, national number, formatted national number, international number, formatted international number, not verified code, not verified reason

## Addressfinder's plans (3)

- [Addressfinder, free](https://datacircle.dev/validate-phone-apis/addressfinder/free/llms.txt): $0.00 per 1,000, 44% complete, live
- [Addressfinder, NZ$55 monthly](https://datacircle.dev/validate-phone-apis/addressfinder/nz-55-monthly/llms.txt): $62.303 per 1,000, 44% complete, live
- [Addressfinder, contact us](https://datacircle.dev/validate-phone-apis/addressfinder/contact-us/llms.txt): 44% complete, live

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

- `GET /api/phone/v1/verification`: [Addressfinder, free](https://datacircle.dev/validate-phone-apis/addressfinder/free/llms.txt)

## Addressfinder's APIs (2)

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

## Addressfinder: phone validation API alternatives

- [Defastra, top-up, Pay as you go, next 15,000 requests a month](https://datacircle.dev/validate-phone-apis/defastra/top-up-pay-as-you-go-next-15000-requests-a-month/llms.txt): $60.00 per 1,000, 56% complete, live
- [RealPhoneValidation, top-up from $25](https://datacircle.dev/validate-phone-apis/realphonevalidation/top-up-from-25/llms.txt): $60.00 per 1,000, 44% complete, live
- [Loqate, £500 pack](https://datacircle.dev/validate-phone-apis/loqate/500-pack/llms.txt): $62.675 per 1,000, 78% complete, live
- [Data8, £500 pack, 10,000 credits, POST /PhoneValidation/IsValid.json, IsValid](https://datacircle.dev/validate-phone-apis/data8/500-pack/llms.txt): $66.675 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 2026-11-02.

- https://addressfinder.com/nz/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/docs/api/error-codes?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/docs/api/overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/docs/api/phone-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/docs/portal-and-account/billing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/phone-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://addressfinder.com/nz/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing