# Eckari, pay as you go, x402, GET /v1/domains/{domain}/expiry: Domain WHOIS API

> When a domain's registration expires and how many whole days remain, read live from the authoritative registry RDAP server.

Eckari's x402 plan for the domain WHOIS API costs $2.00 per 1,000 domains. Eckari's docs list 2 of the 9 fields on our checklist: Registrar, Expires on.
We haven't run Eckari through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
Half of the 349 plans we rank by price cost $1.495 per 1,000 domains or less. This plan costs less per 1,000 domains than 25% of the 349 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.
[Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt), [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt) and [DomScan](https://datacircle.dev/domain-whois-apis/domscan/49-monthly-scale-post-v1-whois-bulk/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-expiry
- [Domain WHOIS API: the 18 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://eckari.com/capabilities?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.eckari.com/v1/domains/{domain}/expiry`
- API key: not needed
- Its API docs: https://eckari.com/capabilities/domain.expiry?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: Eckari (https://eckari.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 22%
- Registrar: ✓
- Expires on: ✓

## Price

- $ per 1,000 domains: $2.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: When a domain's registration expires and how many whole days remain, read live from the authoritative registry RDAP server.

## Data

- Freshness: live
- Keep data: no API terms
- Use data: When meta.attribution is present the source licence requires it: republish it with the data.

## Plan

- Pay: per call
- You get: 1 request
- Enough for: 1 call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /v1/domains/{domain}/expiry

## About the plan

- Plan: x402
- Who can get it: anyone, with no account: each call is paid in USDC on Base (eip155:8453)

## The 8 fields the plan's answer can hold

domain, registered flag, expires date, days until expiry, domain statuses, registrar, RDAP last update, terms URL

## Eckari's plans (1)

- [Eckari, pay as you go, x402, GET /v1/domains/{domain}/expiry](https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-expiry/llms.txt): $2.00 per 1,000, 22% complete, live

## Eckari's calls for this API (2)

- `GET /v1/domains/{domain}/expiry`: [Eckari, pay as you go, x402, GET /v1/domains/{domain}/expiry](https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-expiry/llms.txt)
- `GET /v1/domains/{domain}/registration`: [Eckari, pay as you go, x402, GET /v1/domains/{domain}/registration](https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-registration/llms.txt)

## Eckari's APIs (3)

- [Eckari: domain WHOIS API pricing, 1 plan, GET /v1/domains/{domain}/expiry](https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-expiry/llms.txt)
- [Eckari: business verification API pricing, 1 plan, GET /v1/companies/us/resolve](https://datacircle.dev/business-verification-apis/eckari/pay-as-you-go-x402-get-v1-companies-us-resolve/llms.txt)
- [Eckari: business verification API pricing, 1 plan, GET /v1/companies/uk/search](https://datacircle.dev/business-verification-apis/eckari/pay-as-you-go-x402-get-v1-companies-uk-search/llms.txt)
- [Eckari: business verification API pricing, 1 plan, GET /v1/entities/lei/search](https://datacircle.dev/business-verification-apis/eckari/pay-as-you-go-x402-get-v1-entities-lei-search/llms.txt)
- [Eckari: company enrichment API pricing, 1 plan, GET /v1/entities/lei/{lei}](https://datacircle.dev/company-enrichment-apis/eckari/pay-as-you-go-x402-get-v1-entities-lei-lei/llms.txt)
- [Eckari: company enrichment API pricing, 1 plan, GET /v1/companies/uk/{company_number}](https://datacircle.dev/company-enrichment-apis/eckari/pay-as-you-go-x402-get-v1-companies-uk-company-number/llms.txt)
- [Eckari: company enrichment API pricing, 1 plan, GET /v1/companies/us/{id}](https://datacircle.dev/company-enrichment-apis/eckari/pay-as-you-go-x402-get-v1-companies-us-id/llms.txt)

## Eckari: domain WHOIS API alternatives

- [domainIQ, $49.95 monthly, Pro, GET /api, 1,000 requests a day](https://datacircle.dev/domain-whois-apis/domainiq/49-95-monthly-pro-get-api-1000-requests-a-day/llms.txt): $1.665 per 1,000, 56% complete, live
- [DataAndAPIs, $24.99 monthly](https://datacircle.dev/domain-whois-apis/dataandapis/24-99-monthly/llms.txt): $1.666 per 1,000, 78% complete, live
- [WhoisFreaks, $2,000 pack, 1,000,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/2000-pack-1000000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $2.00 per 1,000, 100% complete, live
- [Whoxy, $10 pack](https://datacircle.dev/domain-whois-apis/whoxy/10-pack/llms.txt): $2.00 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 2026-11-07.

- https://api.eckari.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.eckari.com/v1/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://eckari.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://eckari.com/capabilities?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://eckari.com/capabilities/domain.expiry?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://eckari.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing