Datacircle

2s.io pricing: domain WHOIS API

2s.io's siteThis page as plain textDomain WHOIS API in 2026: the best of 20+ providers compared2s.io: domain WHOIS API alternatives

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56% complete: 5 of the 9 fields on our checklistSee the 9 fields
$0.00per 1,000 domainsIn our domain WHOIS API benchmark, the best plan from 2s.io scores 36.2 out of 100. 2s.io ranks 22nd of 24 providers.This plan is free. We rank 495 plans for domain WHOIS APIs by price. Half the plans cost $1.575 or less per 1,000 domains. See the best free domain WHOIS API plan.Searchwire's $10 pack 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 costs the least for 10,000 domains a month: $2.08.WhoisJSON, Enterno and IPAddress.to are the best domain WHOIS API providers in the Datacircle benchmark.
Type a number to see the cheapest 2s.io plan for that many domains. The table below then sorts the other plans by what each costs.
Plan: Free trial one of 2s.io's 2 plans
Call: GET /api/domain/whois 2s.io's only call for this API
API: Domain WHOIS API one of 2s.io's 15 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 5 of the 9 fields on our checklist. Registrar, Name servers, Statuses, DNSSEC, Abuse contact.
  • Nothing to pay. 2s.io limits how many calls you get but gives no number.
  • One call. You send domain to GET /api/domain/whois. The call returns the domain's WHOIS record.
  • Who can get it: with conditions. Keep data: no API terms. Use data: no API terms.

2s.io: domain WHOIS API alternatives

2s.io alternatives: every domain WHOIS API provider ranked

The table starts with 2s.io's cheapest paid plan. Next come plans from other providers with the price per 1,000 domains closest to 2s.io's.

2s.io, pay as you goCompanyfacts, $49 monthlyHackerTarget, $250 packVee3, $5 monthly, Starter, GET /v1/domains/lookupAI Rook, pay as you go
$ per 1,000 domains$2.50$2.45$2.50$2.50$2.50
Completeness56%67%89%78%33%
Billingpay as you gomonthlypay firstmonthlypay as you go
Payper call$49$250$5per call
Enough foras many as you pay for20,000 calls a month100,000 calls2,000 calls a monthas many as you pay for
Freshnessunknownunknownliveunknownunknown
Who can get itanyone with a wallet holding USDC on Base or Solana, paying each call over x402, with no account or API keyanyonemembers of any plananyoneanyone with a wallet paying USDC on Base, Solana or Hedera, no account or API key

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.

  1. 2s.io
  2. 2s.io/
  3. 2s.io/.well-known/x402
  4. 2s.io/catalog.txt
  5. 2s.io/domain/whois
  6. 2s.io/llms.txt
  7. 2s.io/openapi.json

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Registrant, not in the answer
  • Registrar
  • Created on, not in the answer
  • Updated on, not in the answer
  • Expires on, not in the answer
  • Name servers
  • Statuses
  • DNSSEC
  • Abuse contact
Price
$ per 1,000 domains$0.00
Percall
Billingfree
Charges
Also pays fornothing else
Not found
$ per 1,000$0.00
In their words
Their pitchModern WHOIS via RDAP. Query: domain (e.g. example.com). [...] GDPR: registrant personal data is generally redacted upstream and not returned.
Data
Keep datano API terms
Use datano API terms
Plan
Pay$0
Rate limit
Per second0.00028
Batch1
Speed
Answerin the call
Median0.03 s
The call
You senddomain
MethodGET
Path/api/domain/whois
About the plan
PlanFree trial
Who can get itanyone, with no wallet or payment, for one call per endpoint per hour (a request with ?trial=1 or the X-2s-Trial: 1 header)
The 15 fields the plan's answer can hold

domain, LDH name, handle, registrar, registrar IANA ID, registrar URL, registrar abuse email, registrar abuse phone, registered at, expires at, updated at, statuses, nameservers, DNSSEC signed, RDAP URL

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