# HALOWERK, pay as you go: Phone validation API

> Nimmt jede Schreibweise, erkennt die Landeskennzahl aus 150 Vorwahlen, ergaenzt bei nationaler Schreibweise das Standardland, zerlegt in Vorwahl und Teilnehmernummer und bestimmt fuer Deutschland Festnetz, Mobilfunk und Sonderrufnummern mit Kostenhinweis.

HALOWERK's x402 plan for the phone validation API costs $1.00 per 1,000 phones. We check each provider's docs for 9 fields. HALOWERK's docs list 5: Number, Formats, Validity, Type, Place.
We haven't run HALOWERK through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
We rank 1,398 plans for phone validation APIs by price. Half the plans cost $3.518 or less per 1,000 phones. This plan costs less per 1,000 phones than 67% of the 1,398 plans.
[GuGuData's CNY 124 (about $19) monthly plan](https://datacircle.dev/validate-phone-apis/gugudata/cny-124-monthly/llms.txt) is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 (about $19) monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows. [Keyronne's pay-as-you-go plan](https://datacircle.dev/validate-phone-apis/keyronne/pay-as-you-go/llms.txt) costs the least for 10,000 phones a month: $0.20.
[Trestle](https://datacircle.dev/validate-phone-apis/trestle/top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api/llms.txt), [Signal House](https://datacircle.dev/validate-phone-apis/signal-house/top-up-from-10/llms.txt) and [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/halowerk/pay-as-you-go
- [Phone validation API in 2026: the best of 60+ compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://tools.halowerk.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://tools.halowerk.com/v1/phone/parse`
- API key: not needed
- Its API docs: https://tools.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: HALOWERK (https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-10

## In the answer

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

## Price

- $ per 1,000 phones: $1.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Nimmt jede Schreibweise, erkennt die Landeskennzahl aus 150 Vorwahlen, ergaenzt bei nationaler Schreibweise das Standardland, zerlegt in Vorwahl und Teilnehmernummer und bestimmt fuer Deutschland Festnetz, Mobilfunk und Sonderrufnummern mit Kostenhinweis.

## Data

- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone. Optional: default_country
- Method: POST
- Path: /v1/phone/parse

## About the plan

- Plan: x402
- Who can get it: anyone

## The 15 fields the plan's answer can hold

input, E.164 number, valid, country code, country, national number, area code, subscriber number, line type, line type note, international format, national format, RFC 3966 format, hints, note

## HALOWERK's plans (1)

- [HALOWERK, pay as you go](https://datacircle.dev/validate-phone-apis/halowerk/pay-as-you-go/llms.txt): $1.00 per 1,000, 56% complete

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

- `POST /v1/phone/parse`: [HALOWERK, pay as you go](https://datacircle.dev/validate-phone-apis/halowerk/pay-as-you-go/llms.txt)

## HALOWERK's APIs (8)

- [HALOWERK: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: tech stack API pricing, 2 plans, POST /stack](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack/llms.txt)
- [HALOWERK: tech stack API pricing, 2 plans, POST /stack/batch](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack-batch/llms.txt)
- [HALOWERK: tech stack API pricing, 2 plans, POST /stack/batch/25](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack-batch-25/llms.txt)
- [HALOWERK: tech stack API pricing, 2 plans, POST /v1/tech/detect](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-v1-tech-detect/llms.txt)
- [HALOWERK: web scraping API pricing, 1 plan, POST /batch/extract](https://datacircle.dev/web-scraping-apis/halowerk/pay-as-you-go-x402-post-batch-extract/llms.txt)
- [HALOWERK: web scraping API pricing, 1 plan, POST /extract](https://datacircle.dev/web-scraping-apis/halowerk/pay-as-you-go-x402-post-extract/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /ip](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-ip/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /ip/batch](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-ip-batch/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /v1/ip/reputation](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-v1-ip-reputation/llms.txt)

## HALOWERK: phone validation API alternatives

- [CallerAPI, $12,000 monthly, Enterprise transparency $12,000, GET /api/lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/12000-monthly-enterprise-transparency-12000-get-api-lookup-phone/llms.txt): $1.00 per 1,000, 78% complete, stored
- [ReefAPI, $50 monthly, Ultra monthly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/50-monthly-ultra-monthly-post-phone-validate-v1-validate/llms.txt): $1.00 per 1,000, 67% complete, stored
- [DomScan, $10 pack, 10,000 credits, POST /v1/phone/validate/bulk](https://datacircle.dev/validate-phone-apis/domscan/10-pack-10000-credits-post-v1-phone-validate-bulk/llms.txt): $1.00 per 1,000, 67% complete, stored
- [apipick, $5 pack, 5,000 credits, POST /api/check-china-phone](https://datacircle.dev/validate-phone-apis/apipick/5-pack-5000-credits-post-api-check-china-phone/llms.txt): $1.00 per 1,000, 33% complete
- [Foundry, pay as you go](https://datacircle.dev/validate-phone-apis/foundry/pay-as-you-go/llms.txt): $1.00 per 1,000, 67% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

- https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tools.halowerk.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tools.halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tools.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://tools.halowerk.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing