# HALOWERK, pay as you go: Domain WHOIS API

> Full domain profile: WHOIS, DNS records, mail setup, TLS certificate, subdomains and registrability in one paid call.

HALOWERK's x402 plan for the domain WHOIS API costs $3.00 per 1,000 domains. We check each provider's docs for 9 fields. HALOWERK's docs list 4: Registrar, Expires on, Name servers, Statuses.
We haven't run HALOWERK through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 607 plans for domain WHOIS APIs by price. Half the plans cost $1.667 or less per 1,000 domains. This plan costs less per 1,000 domains than 30% of the 607 plans.
[Searchwire's $10 pack](https://datacircle.dev/domain-whois-apis/searchwire/10-pack/llms.txt) is the cheapest paid plan per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price. [UAPI's CNY 4.90 pack](https://datacircle.dev/domain-whois-apis/uapi/cny-4-90-pack/llms.txt) costs the least for 10,000 domains a month: about $0.73.
[thenetworkery](https://datacircle.dev/domain-whois-apis/thenetworkery/free/llms.txt), [FluentEDI](https://datacircle.dev/domain-whois-apis/fluentedi/free/llms.txt) and [DomainDetails](https://datacircle.dev/domain-whois-apis/domaindetails/9-99-monthly-alerts-get-api-rdap/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/halowerk/pay-as-you-go
- [Domain WHOIS API in 2026: the best of 30+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://dns.halowerk.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://dns.halowerk.com/domain`
- API key: not needed
- Its API docs: https://dns.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: HALOWERK (https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 44%
- Registrar: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓

## Price

- $ per 1,000 domains: $3.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## Not found

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

## In their words

- Their pitch: Full domain profile: WHOIS, DNS records, mail setup, TLS certificate, subdomains and registrability in one paid call.

## Data

- 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: domain. Optional: subdomains, cert_chain, whois_raw
- Method: POST
- Path: /domain

## About the plan

- Plan: x402
- Who can get it: anyone

## The 37 fields the plan's answer can hold

domain, registrable domain, TLD, checked at, registered, available, availability source, A records, AAAA records, CNAME records, MX records, name servers, TXT records, CAA records, SOA record, name server operators, mail provider, SPF record, SPF policy, DMARC record, DMARC policy, DKIM selectors found, MTA-STS, TLS issuer, TLS valid from, TLS valid to, TLS days remaining, TLS alternative names, WHOIS known, registrar, created, expires, days until expiry, status, WHOIS server, subdomains, cache

## HALOWERK's plans (1)

- [HALOWERK, pay as you go](https://datacircle.dev/domain-whois-apis/halowerk/pay-as-you-go/llms.txt): $3.00 per 1,000, 44% complete

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

- `POST /domain`: [HALOWERK, pay as you go](https://datacircle.dev/domain-whois-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: domain WHOIS API alternatives

- [DomScan, $10 pack, 10,000 credits, POST /v1/whois/bulk](https://datacircle.dev/domain-whois-apis/domscan/10-pack-10000-credits-post-v1-whois-bulk/llms.txt): $3.00 per 1,000, 100% complete
- [WhoisFreaks, $150 pack, 50,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/150-pack-50000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $3.00 per 1,000, 100% complete, live
- [ipv4.fr, pay as you go](https://datacircle.dev/domain-whois-apis/ipv4-fr/pay-as-you-go/llms.txt): $3.00 per 1,000, 44% complete
- [Ambolt, pay as you go](https://datacircle.dev/domain-whois-apis/ambolt/pay-as-you-go/llms.txt): $3.00 per 1,000, 67% complete
- [fittings.sh, pay as you go](https://datacircle.dev/domain-whois-apis/fittings-sh/pay-as-you-go/llms.txt): $3.00 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://dns.halowerk.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://dns.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://tools.halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://tools.halowerk.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing