# Postcoder, free: Phone validation API

> Postcoder checks and validates mobile phone numbers in real-time as soon as they're typed into your form. Reduce fraudulent or incorrect signups, and collect valid and active mobile phone numbers from genuine customers.

Postcoder's phone validation API on its Free trial plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Validity, Type, Carrier, Place.
We rank 721 plans by price. [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 [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) are the best phone validation API providers in our benchmark.

- This page: https://datacircle.dev/validate-phone-apis/postcoder/free
- [Best phone validation API in 2026: providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://postcoder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://ws.postcoder.com/pcw/{apikey}/mobile/{mobilephonenumber}`
- API key: with the plan, on https://postcoder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://postcoder.com/docs/mobile-validation/mobile?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Postcoder (https://postcoder.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: autocomplete/retrieve · address · reversegeo · position · udprn · street · nyb · ipaddress · ngd/retrieve · ngd · pafaddressbase · addressbase · addressbase/uprn · addressbase/dpa · addressbase/lpi · email · bank · bank/sortcode · bank/iban · otp/send

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Postcoder checks and validates mobile phone numbers in real-time as soon as they're typed into your form. Reduce fraudulent or incorrect signups, and collect valid and active mobile phone numbers from genuine customers.

## Data

- Freshness: live
- Countries: Worldwide
- What it checks: numbering plan, carrier, line in service
- Keep data: until the licence ends (12 months from acceptance, or sooner when the credit pack is used up or expires or the monthly plan is cancelled), then destroy all copies and confirm it in writing within 7 days
- Use data: your own internal business use, or inside a product or service you sell to your own clients if you enforce Postcoder's end-user terms on them and give Postcoder each client's company details and usage summary, legal purposes only, API calls only for requests people start in real time (e.g. a website form), not a batch script working through a database, unless agreed in writing

## Plan

- Pay: £0
- Expires: 30 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: mobilephonenumber. Optional: country, identifier
- Method: GET
- Path: /pcw/{apikey}/mobile/{mobilephonenumber}

## About the plan

- Plan: Free trial
- Who can get it: anyone

## The 11 fields the plan's answer can hold

warning, state ID, state, on network, valid, phone number, line type, network name, network code, mobile country code, country name

## Postcoder's plans (20)

- [Postcoder, free](https://datacircle.dev/validate-phone-apis/postcoder/free/llms.txt): $0.00 per 1,000, 56% complete, live
- [Postcoder, £27 pack](https://datacircle.dev/validate-phone-apis/postcoder/27-pack/llms.txt): $86.411 per 1,000, 56% complete, live
- [Postcoder, £35 pack](https://datacircle.dev/validate-phone-apis/postcoder/35-pack/llms.txt): $56.007 per 1,000, 56% complete, live
- [Postcoder, £65 pack](https://datacircle.dev/validate-phone-apis/postcoder/65-pack/llms.txt): $52.007 per 1,000, 56% complete, live
- [Postcoder, £148 pack](https://datacircle.dev/validate-phone-apis/postcoder/148-pack/llms.txt): $47.366 per 1,000, 56% complete, live
- [Postcoder, £256 pack](https://datacircle.dev/validate-phone-apis/postcoder/256-pack/llms.txt): $40.965 per 1,000, 56% complete, live
- [Postcoder, £455 pack](https://datacircle.dev/validate-phone-apis/postcoder/455-pack/llms.txt): $36.405 per 1,000, 56% complete, live
- [Postcoder, £987 pack](https://datacircle.dev/validate-phone-apis/postcoder/987-pack/llms.txt): $31.588 per 1,000, 56% complete, live
- [Postcoder, £1,802 pack](https://datacircle.dev/validate-phone-apis/postcoder/1802-pack/llms.txt): $28.836 per 1,000, 56% complete, live
- [Postcoder, £3,319 pack](https://datacircle.dev/validate-phone-apis/postcoder/3319-pack/llms.txt): $26.555 per 1,000, 56% complete, live
- [Postcoder, £46 monthly](https://datacircle.dev/validate-phone-apis/postcoder/46-monthly/llms.txt): $36.805 per 1,000, 56% complete, live
- [Postcoder, £95 monthly](https://datacircle.dev/validate-phone-apis/postcoder/95-monthly/llms.txt): $30.404 per 1,000, 56% complete, live
- [Postcoder, £167 monthly](https://datacircle.dev/validate-phone-apis/postcoder/167-monthly/llms.txt): $26.723 per 1,000, 56% complete, live
- [Postcoder, £233 monthly](https://datacircle.dev/validate-phone-apis/postcoder/233-monthly/llms.txt): $24.856 per 1,000, 56% complete, live
- [Postcoder, £296 monthly](https://datacircle.dev/validate-phone-apis/postcoder/296-monthly/llms.txt): $23.683 per 1,000, 56% complete, live
- [Postcoder, £530 monthly](https://datacircle.dev/validate-phone-apis/postcoder/530-monthly/llms.txt): $21.203 per 1,000, 56% complete, live
- [Postcoder, £642 monthly](https://datacircle.dev/validate-phone-apis/postcoder/642-monthly/llms.txt): $20.547 per 1,000, 56% complete, live
- [Postcoder, £946 monthly](https://datacircle.dev/validate-phone-apis/postcoder/946-monthly/llms.txt): $20.184 per 1,000, 56% complete, live
- [Postcoder, £1,261 monthly](https://datacircle.dev/validate-phone-apis/postcoder/1261-monthly/llms.txt): $20.178 per 1,000, 56% complete, live
- [Postcoder, contact us](https://datacircle.dev/validate-phone-apis/postcoder/contact-us/llms.txt): 56% complete, live

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

- `GET /pcw/{apikey}/mobile/{mobilephonenumber}`: [Postcoder, free](https://datacircle.dev/validate-phone-apis/postcoder/free/llms.txt)

## Postcoder's APIs (2)

- [Postcoder: email verification API pricing, 20 plans](https://datacircle.dev/validate-email-apis/postcoder/free/llms.txt)
- [Postcoder: phone validation API pricing, 20 plans](https://datacircle.dev/validate-phone-apis/postcoder/free/llms.txt)

## Postcoder: phone validation API alternatives

- [HLR Lookup, £370 pack, 100,000 lookups, POST /apiv2/hlr, Full HLR lookup, full](https://datacircle.dev/validate-phone-apis/hlr-lookup/370-pack-100000-lookups-post-apiv2-hlr-full-hlr-lookup-full/llms.txt): $19.736 per 1,000, 89% complete, live
- [ProWebLook, $9.99 pack, WhatsApp One-Time 500, GET /wavalidation](https://datacircle.dev/validate-phone-apis/proweblook/9-99-pack-whatsapp-one-time-500-get-wavalidation/llms.txt): $19.98 per 1,000, 67% complete, live
- [2Chat, $40 monthly, Single Plan, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/validate-phone-apis/2chat/40-monthly-single-plan-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $20.00 per 1,000, 33% complete, live
- [Listar, top-up from €1,000, Silver, POST /search/verify-whatsapp](https://datacircle.dev/validate-phone-apis/listar/top-up-from-1000-silver-post-search-verify-whatsapp/llms.txt): $20.255 per 1,000, 22% 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://admin.postcoder.com/downloads/Licence-Agreement-v28.2.0.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/docs/credit-costs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/docs/mobile-validation/mobile?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/docs/troubleshooting?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/mobile-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/payments-billing-compliance?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://postcoder.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing