# Horizon Pulse, pay as you go: Domain WHOIS API

> One .com, .net or .org domain from registry RDAP: registrar, dates, status, nameservers, DNSSEC, registry notices, source URL. No contact data.

Horizon Pulse's x402 pay per call plan for the domain WHOIS API costs $5.00 per 1,000 domains. We check each provider's docs for 9 fields. Horizon Pulse's docs list 7: Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC.
We haven't run Horizon Pulse through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 495 plans for domain WHOIS APIs by price. Half the plans cost $1.575 or less per 1,000 domains. This plan costs less per 1,000 domains than 18% of the 495 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. [C99.nl's $25 yearly plan](https://datacircle.dev/domain-whois-apis/c99-nl/25-yearly/llms.txt) costs the least for 10,000 domains a month: $2.08.
[WhoisJSON](https://datacircle.dev/domain-whois-apis/whoisjson/120-monthly/llms.txt), [Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt) and [IPAddress.to](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/horizon-pulse/pay-as-you-go
- [Domain WHOIS API in 2026: the best of 20+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://horizonpulse.dev/x402-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://horizonpulse.dev/api/domain/whois`
- API key: not needed
- Its API docs: https://horizonpulse.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#/paths/~1api~1domain~1whois
- Sold by: Horizon Pulse (https://horizonpulse.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 78%
- Registrar: ✓
- Created on: ✓
- Updated on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓
- DNSSEC: ✓

## Price

- $ per 1,000 domains: $5.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: One .com, .net or .org domain from registry RDAP: registrar, dates, status, nameservers, DNSSEC, registry notices, source URL. No contact data.

## Data

- Keep data: no limit
- Use data: Buyer terms: results may not be used for marketing, spam or any unsolicited commercial message or solicitation, or to compile or resell a registration database. [...] Do not use results for unsolicited commercial messages or high-volume automated querying.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /api/domain/whois

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone, with no account or API key, paying each call in USDC from a wallet (x402)

## The 19 fields the plan's answer can hold

ok, domain, domain in Unicode, registrar, registrar IANA ID, registrar RDAP URL, created date, updated date, expiry date, statuses, nameservers, DNSSEC signed, registry notices, registry host, registry RDAP URL, source, attribution, disclaimer, buyer terms

## Horizon Pulse's plans (1)

- [Horizon Pulse, pay as you go](https://datacircle.dev/domain-whois-apis/horizon-pulse/pay-as-you-go/llms.txt): $5.00 per 1,000, 78% complete

## Horizon Pulse's calls for this API (1)

- `GET /api/domain/whois`: [Horizon Pulse, pay as you go](https://datacircle.dev/domain-whois-apis/horizon-pulse/pay-as-you-go/llms.txt)

## Horizon Pulse's APIs (3)

- [Horizon Pulse: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/horizon-pulse/pay-as-you-go/llms.txt)
- [Horizon Pulse: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/horizon-pulse/pay-as-you-go/llms.txt)
- [Horizon Pulse: web scraping API pricing, 1 plan, GET /api/http](https://datacircle.dev/web-scraping-apis/horizon-pulse/pay-as-you-go-x402-pay-per-call-get-api-http/llms.txt)
- [Horizon Pulse: web scraping API pricing, 1 plan, GET /api/extract](https://datacircle.dev/web-scraping-apis/horizon-pulse/pay-as-you-go-x402-pay-per-call-get-api-extract/llms.txt)
- [Horizon Pulse: web scraping API pricing, 1 plan, GET /api/fetch](https://datacircle.dev/web-scraping-apis/horizon-pulse/pay-as-you-go-x402-pay-per-call-get-api-fetch/llms.txt)

## Horizon Pulse: domain WHOIS API alternatives

- [How.is, pay as you go](https://datacircle.dev/domain-whois-apis/how-is/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete, live
- [fetcher.cloud, pay as you go](https://datacircle.dev/domain-whois-apis/fetcher-cloud/pay-as-you-go/llms.txt): $5.00 per 1,000, 44% complete, live
- [IPIntel, pay as you go](https://datacircle.dev/domain-whois-apis/ipintel/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete
- [Kadec0, pay as you go, x402 pay per call, GET /v1/whois-bulk](https://datacircle.dev/domain-whois-apis/kadec0/pay-as-you-go-x402-pay-per-call-get-v1-whois-bulk/llms.txt): $5.00 per 1,000, 44% 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 2026-11-09.

- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/terms/buyer?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://horizonpulse.dev/x402-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing