# Ideal Postcodes, free: Phone validation API

> Unlock the ultimate competitive advantage by accessing the most accurate and up-to-date mobile and phone verification solution and verify numbers in real time

Ideal Postcodes'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: Formats, Validity, Carrier, Place.
We haven't run Ideal Postcodes through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
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/ideal-postcodes/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.ideal-postcodes.co.uk/v1/phone_numbers`
- API key: with the plan, on https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://docs.ideal-postcodes.co.uk/docs/api/phone-number-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Ideal Postcodes (https://ideal-postcodes.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 44%
- Formats: ✓
- Validity: ✓
- Carrier: ✓
- Place: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Resolve Address · Lookup Postcode · Email Validation

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Unlock the ultimate competitive advantage by accessing the most accurate and up-to-date mobile and phone verification solution and verify numbers in real time

## Data

- Countries: Worldwide
- What it checks: numbering plan, carrier
- Keep data: no limit
- Use data: Except to the extent expressly permitted by law or agreed in writing by IDDQD, the Client is prohibited from: re-selling (whether for free or by charging) the Service Output or Service, [...] The Client may not (except to the extent expressly permitted by law or agreed in writing by IDDQD or in Third Party Contracts): use the Service to provide any software or a service which competes with the Software Materials or Service, undertake any data cleansing activities unless expressly permitted by the respective Third Party Contracts, use the Service, API data, or any content obtained through our platform to develop, train, improve, benchmark, enhance or evaluate any artificial intelligence, machine learning, or automated decision-making systems, whether directly or indirectly. [...] The Service and Software Materials are provided solely for the Client's own use. The Client may not resell or attempt to resell the Service Output, or market or otherwise distribute the Software Materials or Service without IDDQD's express written permission. [...] Lookups are not transferable to third parties, nor may it be used for the benefit of third parties by the Client. [...] Any test balance disbursed on Your account (including Your initial free balance) may only be used for testing and evaluation purposes.

## Plan

- Pay: £0
- You get: 50 credits
- Enough for: 50 calls, once
- Expires: 1 month

## Rate limit

- Per second: 30
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: query. Optional: current_carrier, tags
- Method: GET
- Path: /v1/phone_numbers

## About the plan

- Plan: Free trial
- Who can get it: organisations only: the terms' Client "means the organisation named as the 'Client' or 'Business' or 'Company' in the registration form [...]"

## The 16 fields the plan's answer can hold

valid, national format, international format, 3-letter ISO country code, 2-letter ISO country code, country, current carrier network code, current carrier name, current carrier country, current carrier network type, original carrier network code, original carrier name, original carrier country, original carrier network type, response code, message

## Ideal Postcodes's plans (8)

- [Ideal Postcodes, free](https://datacircle.dev/validate-phone-apis/ideal-postcodes/free/llms.txt): $0.00 per 1,000, 44% complete
- [Ideal Postcodes, £9 pack](https://datacircle.dev/validate-phone-apis/ideal-postcodes/9-pack/llms.txt): $60.008 per 1,000, 44% complete
- [Ideal Postcodes, £42 pack](https://datacircle.dev/validate-phone-apis/ideal-postcodes/42-pack/llms.txt): $50.916 per 1,000, 44% complete
- [Ideal Postcodes, £155 pack](https://datacircle.dev/validate-phone-apis/ideal-postcodes/155-pack/llms.txt): $48.068 per 1,000, 44% complete
- [Ideal Postcodes, £420 pack](https://datacircle.dev/validate-phone-apis/ideal-postcodes/420-pack/llms.txt): $43.755 per 1,000, 44% complete
- [Ideal Postcodes, £900 pack](https://datacircle.dev/validate-phone-apis/ideal-postcodes/900-pack/llms.txt): $37.388 per 1,000, 44% complete
- [Ideal Postcodes, contact us, Custom package](https://datacircle.dev/validate-phone-apis/ideal-postcodes/contact-us-custom-package/llms.txt): 44% complete
- [Ideal Postcodes, contact us, Registered charity](https://datacircle.dev/validate-phone-apis/ideal-postcodes/contact-us-registered-charity/llms.txt): 44% complete

## Ideal Postcodes's calls for this API (1)

- `GET /v1/phone_numbers`: [Ideal Postcodes, free](https://datacircle.dev/validate-phone-apis/ideal-postcodes/free/llms.txt)

## Ideal Postcodes's APIs (2)

- [Ideal Postcodes: email verification API pricing, 8 plans](https://datacircle.dev/validate-email-apis/ideal-postcodes/free/llms.txt)
- [Ideal Postcodes: phone validation API pricing, 8 plans](https://datacircle.dev/validate-phone-apis/ideal-postcodes/free/llms.txt)

## Ideal Postcodes: phone validation API alternatives

- [Postcoder, £46 monthly](https://datacircle.dev/validate-phone-apis/postcoder/46-monthly/llms.txt): $36.805 per 1,000, 56% complete, live
- [Loqate, $300 pack](https://datacircle.dev/validate-phone-apis/loqate/300-pack/llms.txt): $37.00 per 1,000, 78% complete, live
- [Listar, top-up from €50,000, Platinum, POST /search/verify-phone-ownership](https://datacircle.dev/validate-phone-apis/listar/top-up-from-50000-platinum-post-search-verify-phone-ownership/llms.txt): $39.386 per 1,000, 67% complete, live
- [Openapi.com, €700 yearly](https://datacircle.dev/validate-phone-apis/openapi-com/700-yearly/llms.txt): $39.386 per 1,000, 78% 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 2026-11-03.

- https://docs.ideal-postcodes.co.uk/docs/api/api-reference.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/api/phone-number-validation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/cli/phone.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/guides/phone-validation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://ideal-postcodes.co.uk/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://ideal-postcodes.co.uk/guides/pricing-plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://ideal-postcodes.co.uk/guides/what-is-a-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://ideal-postcodes.co.uk/phone-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://terms.ideal-postcodes.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://terms.ideal-postcodes.co.uk/extended-terms-of-service/payg-lookup-licence?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing