Domain WHOIS API: best providers in 2026
We score 13 domain WHOIS APIs. 7 of them leave out who registered the domain. Robtex, DomScan and WhoisFreaks are the best domain WHOIS API providers in the Datacircle benchmark. For the three we score highest, we show each one's top scoring plan, each part of the plan's score and what 1,000 domains cost. We rank 316 plans by price. Searchwire's $10 pack is the cheapest paid plan per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price.
Domain WHOIS API alternatives, ranked by score
| Rank | Provider and plan | Overall score | Accuracy score | $ per 1,000 domains |
|---|---|---|---|---|
| 1 | Robtex, free | 83.6 | 72 | $0.00 |
| 2 | DomScan, $6 monthly, Starter | 73.6 | 87 | $0.72 |
| 3 | WhoisFreaks, $200 monthly, Monthly Subscription, 150,000 API Credits | 73.4 | 77 | $1.33 |
| 4 | Searchwire, $10 pack | 71.5 | 44 | Unknown. The provider's pages give this plan's price, but not how many domains it pays for. |
| 5 | WhoisJsonAPI, $129 monthly, Premium | 62.6 | 87 | $0.258 |
| 6 | Pushbuild, top-up | 53.5 | 74 | $2.40 |
| 7 | Leadgen Romania, €29 monthly | 50.9 | 48 | $0.218 |
| 8 | DR Checker, $15 monthly | 50.6 | 73 | $75.00 |
| 9 | Unstuckapi, $10 pack | 49.8 | 72 | $10.00 |
| 10 | Suprsonic, $29 monthly | 49.1 | 80 | $14.50 |
Compare the top three side by side: DomScan vs Robtex, Robtex vs WhoisFreaks, DomScan vs WhoisFreaks
#1 Robtex: Domain WHOIS API
Robtex's docs list 6 of the 9 fields on our checklist: Registrar, Created on, Expires on, Name servers, Statuses, DNSSEC.
- Overall score
- 83.6
- $ per 1,000
- $0.00
- Price score
- 100
- When the provider has no WHOIS record for the domain: you pay nothing
- Plans of this API we rank by price: 316
- Plans cheaper per 1,000 domains than this plan: 0
- Accuracy score
- 72
- Cost to get started score
- 100
- How you pay: free
- Least to pay before your first result: $0
- Bundle score
- 98
- Also pays for: 58 other calls
- Performance score
- 33
- Median answer time: 0.30 s
- Fastest provider fetching fresh data: DomScan, WHOIS Lookup, under 0.1 s
- We scored this provider on 9 of the 20 domains in our benchmark. We sent this provider those 9 domains on 7 November 2026.
- This provider's plan scored 83 out of 100 on those 9 domains. We trust a score on 9 domains less than a score on all 20. So we lower this plan's Accuracy score to 72 out of 100.
Is Robtex yours? Put this Best Overall badge on your site.
The badge links to this page. It shows your current rank on this page. Once it is on your site, it keeps saying #1 after another provider takes the top, with the dates you were #1.
#2 DomScan: Domain WHOIS API
DomScan's docs list all 9 fields on our checklist: Registrant, Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC, Abuse contact.
- Overall score
- 73.6
- $ per 1,000
- $0.72
- Price score
- 43
- When the provider has no WHOIS record for the domain: the provider's pages give no price
- Plans of this API we rank by price: 316
- Plans cheaper per 1,000 domains than this plan: 46
- Accuracy score
- 87
- Cost to get started score
- 90
- How you pay: monthly
- Least to pay before your first result: $6
- Bundle score
- 99
- Also pays for, from the same budget: 183 other calls
- Performance score
- 100
- Median answer time: under 0.1 s
- Fastest provider fetching fresh data: DomScan, WHOIS Lookup, under 0.1 s
- On 6 November 2026, we sent this provider all 20 domains in our benchmark.
- This provider's plan scored 87 out of 100 for accuracy.
#3 WhoisFreaks: Domain WHOIS API
WhoisFreaks, $200 monthly, Monthly Subscription, 150,000 API Credits
WhoisFreaks's docs list all 9 fields on our checklist: Registrant, Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC, Abuse contact.
- Overall score
- 73.4
- $ per 1,000
- $1.33
- Price score
- 81
- When the provider has no WHOIS record for the domain: you pay nothing
- Plans of this API we rank by price: 316
- Plans cheaper per 1,000 domains than this plan: 60
- Accuracy score
- 77
- Cost to get started score
- 68
- How you pay: monthly
- Least to pay before your first result: $200
- Bundle score
- 95
- Also pays for, from the same budget: Live WHOIS · Historical WHOIS · Reverse WHOIS · IP WHOIS · ASN WHOIS · Live DNS · Historical DNS and 14 more
- Performance score
- 11
- Median answer time: 0.90 s
- Fastest provider fetching fresh data: DomScan, WHOIS Lookup, under 0.1 s
- On 6 November 2026, we sent this provider all 20 domains in our benchmark.
- This provider's plan scored 77 out of 100 for accuracy.
Best domain WHOIS API for each need
Of the 13 domain WHOIS API providers ranked in the Datacircle benchmark:
- Best for the lowest price per 1,000 domains: Robtex.
- Best for the most accurate answers: DomScan, WhoisJsonAPI and fetcher.cloud.
- Best for the lowest cost to get your first result: Robtex and JsonWhoisAPI.
- Best for the most endpoints on one plan: Pushbuild.
- Best for the fastest answers: DomScan and DR Checker.
How we tested
On 6 and 7 November 2026, we sent 14 providers the same list of 20 domains, or fewer. Each plan's Overall score adds five parts at their weights, scaled to 100. Price and Accuracy weigh 40 each, and Cost to get started, Bundle and Performance weigh 10 each. Some providers fetch fresh data on each call, and some answer from stored data. We compare speed only within each of these two groups. We score 13 of the 14 providers and rank them by their top plan's Overall score.
Questions about domain WHOIS APIs
What is a domain WHOIS API?
A domain WHOIS API takes a domain. The API returns the domain's WHOIS record. Our price sheet lists 490 domain WHOIS API plans from 52 providers.
What is the best domain WHOIS API?
Robtex is the best domain WHOIS API in the Datacircle benchmark. Robtex's free plan has an Overall score of 83.6 out of 100. DomScan is second at 73.6 and WhoisFreaks third at 73.4.
What is the cheapest domain WHOIS API?
Searchwire's $10 pack is the cheapest paid domain WHOIS API per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price. We rank 316 domain WHOIS API plans by price. Half of them cost $1.50 per 1,000 domains or less.
Is there a free domain WHOIS API?
Yes: 38 domain WHOIS API plans on our price sheet are free. Robtex's free plan scores highest of the free plans in our benchmark, at 83.6 out of 100. IPIPAI's free plan allows the most calls of the free plans: 2,592,000 a month.
Which is better, Robtex or DomScan?
Robtex scores higher overall, at 83.6 against DomScan's 73.6 in our benchmark. DomScan scores higher on Performance, at 100 against Robtex's 33.
Can I use domain WHOIS API data?
Each provider's terms decide what you can do with domain WHOIS API data. We rank 13 domain WHOIS API providers. 11 of the 13 have API terms. 6 of the 13 set no time limit on keeping the data. 11 of the 13 set conditions on how you use the data. Each plan's page shows what the provider's terms say about keeping and using the data.
How did you test domain WHOIS APIs?
On 6 and 7 November 2026, we sent 14 providers the same list of 20 domains, or fewer.
Domain WHOIS API alternatives ranked #11 to #13
| Rank | Provider and plan | Overall score | Accuracy score | $ per 1,000 domains |
|---|---|---|---|---|
| 11 | fetcher.cloud, pay as you go | 45.1 | 87 | $5.00 |
| 12 | IP2Location.io, $499 monthly | 42.9 | 72 | $3.33 |
| 13 | JsonWhoisAPI, pay as you go, Next 50,000 | 33.4 | 53 | $9.00 |
We don't rank 1 other provider we benchmarked: IPIPAI. Each IPIPAI plan is free or priced on request. We don't score these plans.
We haven't benchmarked 38 other domain WHOIS API providers yet:
- agentsvc.io
- ALAPI
- APICK
- APIclub
- Be1
- C99.nl
- Call402
- Chinaz
- Companyfacts
- Deepinfo
- DomainIndex
- domainIQ
- DomainRef
- DomainTools
- Enterno
- FullHunt
- GetWhoisData
- GuGuData
- HackerTarget
- Hexomatic
- How.is
- IPScanner
- JsonWhois
- Netlas
- RDAPAPI
- ScrapeWhale
- Siftwright
- StartupRadar
- Sugra API
- Surepass
- Trustfull
- Validin
- VebAPI
- ViewDNS.info
- WhoAPI
- WhoisGate
- WhoisJSON
- Whoxy
6 domain WHOIS API providers have a call named for batches or bulk:
- Chinaz: Whois, batch
- domainIQ: Bulk WHOIS lookup
- DomScan: Bulk WHOIS Lookup
- RDAPAPI: Bulk Domain Lookup
- WhoisFreaks: Bulk WHOIS
- WhoisJsonAPI: Bulk request
3 domain WHOIS API providers have a call with "check" in the name:
Domain WHOIS API comparison: how we tested each provider, and what each one costs
Robtex, #1 of 13
We tested Robtex on 7 November 2026 with 9 of the 20 domains in our test. Robtex scored 72 out of 100 for accuracy. Best for: the lowest price per 1,000 domains.
Robtex costs nothing on the Free API plan. Robtex doesn't state a monthly limit for the Free API plan.
DomScan, #2 of 13
We tested DomScan on 6 November 2026 with all 20 domains in our test. DomScan scored 87 out of 100 for accuracy. Best for: the most accurate answers. WhoisJsonAPI and fetcher.cloud are as accurate as DomScan.
Price on the cheapest plan for each number of domains:
- 1,000 domains: $30 once, enough for 16.7 months ($1.80 a month), with DomScan's 50,000 credits pack
- 10,000 domains: $85 once, enough for 8.3 months ($10.24 a month), with DomScan's 250,000 credits pack
- 100,000 domains: $49 a month with DomScan's Scale plan
- 1,000,000 domains: no plan listed
WhoisFreaks, #3 of 13
We tested WhoisFreaks on 6 November 2026 with all 20 domains in our test. WhoisFreaks scored 77 out of 100 for accuracy. WhoisFreaks's best rank is #5, for price.
Price on the cheapest plan for each number of domains:
- 1,000 domains: $20 once, enough for 5 months ($4 a month), with WhoisFreaks's 5,000 API Credits pack
- 10,000 domains: $400 once, enough for 15 months ($26.67 a month), with WhoisFreaks's 150,000 API Credits pack
- 100,000 domains: $2,000 once, enough for 10 months ($200 a month), with WhoisFreaks's 1,000,000 API Credits pack
- 1,000,000 domains: $1,000 a month with WhoisFreaks's Monthly Subscription, 1,000,000 API Credits plan
Searchwire, #4 of 13
We tested Searchwire on 7 November 2026 with 13 of the 20 domains in our test. Searchwire scored 44 out of 100 for accuracy. Searchwire's best rank is #3, for cost to get started.
Searchwire's plans don't say what 1,000 to 1,000,000 domains cost.
WhoisJsonAPI, #5 of 13
We tested WhoisJsonAPI on 6 November 2026 with all 20 domains in our test. WhoisJsonAPI scored 87 out of 100 for accuracy. Best for: the most accurate answers. DomScan and fetcher.cloud are as accurate as WhoisJsonAPI.
Price on the cheapest plan for each number of domains:
- 1,000 to 100,000 domains: $490 a year paid up front with WhoisJsonAPI's Basic plan
- 1,000,000 domains: $2,990 a year paid up front with WhoisJsonAPI's Enterprise plan
Pushbuild, #6 of 13
We tested Pushbuild on 6 November 2026 with all 20 domains in our test. Pushbuild scored 74 out of 100 for accuracy. Best for: one plan that covers more of Pushbuild's other calls than any other provider's plan.
Price on the cheapest plan for each number of domains:
- 1,000 domains: $2.40 a month with Pushbuild's Added credit top-up
- 10,000 domains: $24 a month with Pushbuild's Added credit top-up
- 100,000 domains: $240 a month with Pushbuild's Added credit top-up
- 1,000,000 domains: $2,400 a month with Pushbuild's Added credit top-up
Leadgen Romania, #7 of 13
We tested Leadgen Romania on 6 November 2026 with all 20 domains in our test. Leadgen Romania scored 48 out of 100 for accuracy. Leadgen Romania's best rank is #2, for price.
Price on the cheapest plan for each number of domains:
- 1,000 domains: free with Leadgen Romania's Free plan
- 10,000 domains: $101.28 a year paid up front with Leadgen Romania's Pro plan
- 100,000 domains: $326.34 a year paid up front with Leadgen Romania's Business plan
- 1,000,000 domains: no plan listed
DR Checker, #8 of 13
We tested DR Checker on 7 November 2026 with all 20 domains in our test. DR Checker scored 73 out of 100 for accuracy. Best for: the fastest answers. DomScan answers as fast.
Price on the cheapest plan for each number of domains:
- 1,000 to 1,000,000 domains: contact DR Checker for a price
Unstuckapi, #9 of 13
We tested Unstuckapi on 6 November 2026 with 9 of the 20 domains in our test. Unstuckapi scored 72 out of 100 for accuracy. Unstuckapi's best rank is #3, for cost to get started.
Price on the cheapest plan for each number of domains:
- 1,000 domains: $10 a month with Unstuckapi's $10 prepaid credit pack
- 10,000 to 1,000,000 domains: no plan listed
Suprsonic, #10 of 13
We tested Suprsonic on 6 November 2026 with all 20 domains in our test. Suprsonic scored 80 out of 100 for accuracy. Suprsonic's best rank is #4, for accuracy.
Price on the cheapest plan for each number of domains:
- 1,000 domains: $29 a month with Suprsonic's Pro plan
- 10,000 domains: $249 a month with Suprsonic's Team plan
- 100,000 domains: $1,199 a month with Suprsonic's Team plus 2x plan
- 1,000,000 domains: contact Suprsonic for a price
The Accuracy score on domain WHOIS APIs
A provider's Accuracy score, out of 100, shows how much of a domain's WHOIS record the provider's call gets right. We send each provider the domain. We score nine parts: the registrar, three dates, the name servers, the statuses, the registrant, the abuse contact and DNSSEC. The dates are the creation, the last update and the expiry. A registry runs each domain ending, such as .com. We check each of the nine parts in the answer against the domain's record at the registry. We read the registry's RDAP record just before our calls and just after them. We also check the registrar's own RDAP record for the registrant, the abuse contact, the dates and the statuses. We never check an answer against another provider's answer. For each domain, we divide the number of right parts by the number of parts in the records. We average the scores over all domains. Each domain counts the same. A domain scores 0 when the answer has no WHOIS record. We read only the fields of an answer. We don't read the raw WHOIS text. Some providers say they may answer from a stored copy of their data. We check answers from a stored copy against the registry's and the registrar's records, as for any other answer. We lower the score when we test the call on fewer domains than the benchmark has.
Is DomScan yours? Put this Most Accurate badge on your site.
The badge links to this page. It shows your current rank on this page. Once it is on your site, it keeps saying #1 after another provider takes the top, with the dates you were #1.
- Domain WHOIS API pricing: free and cheapest plans compared
- Domain WHOIS API benchmark as CSV
- This page as plain text