# Domain WHOIS API pricing: free and cheapest plans compared

[Domain WHOIS API: best providers in 2026](https://datacircle.dev/best-domain-whois-api)

Domain WHOIS APIs side by side: the fields each returns, what 1,000 domains cost and how fresh they are. [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free), [DomScan](https://datacircle.dev/domain-whois-apis/domscan/free-post-v1-whois-bulk#6-monthly-starter-post-v1-whois-bulk) and [WhoisFreaks](https://datacircle.dev/domain-whois-apis/whoisfreaks/free-post-v2-0-bulkwhois-live#200-monthly-monthly-subscription-150000-api-credits-post-v2-0-bulkwhois-live) are the best domain WHOIS API providers in the Datacircle benchmark. [C99.nl's $25 yearly plan](https://datacircle.dev/domain-whois-apis/c99-nl/5-monthly#25-yearly) costs the least for 10,000 domains a month: $2.08. We list 490 domain WHOIS API plans, 38 of them free. [IPIPAI](https://datacircle.dev/domain-whois-apis/ipipai/free)'s free plan gives the most: 2,592,000 domains a month.

1. [Robtex, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt): Overall score 83.6 (Price 100, Accuracy 72, Cost to get started 100, Bundle 98, Performance 33), $0.00 per 1,000 domains
2. [DomScan, $6 monthly, Starter: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domscan/6-monthly-starter-post-v1-whois-bulk/llms.txt): Overall score 73.6 (Price 43, Accuracy 87, Cost to get started 90, Bundle 99, Performance 100), $0.72 per 1,000 domains
3. [DomScan, $6 monthly, Starter: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domscan/6-monthly-starter-get-v1-whois/llms.txt): Overall score 73.6 (Price 43, Accuracy 87, Cost to get started 90, Bundle 99, Performance 100), $0.72 per 1,000 domains
4. [WhoisFreaks, $200 monthly, Monthly Subscription, 150,000 API Credits: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoisfreaks/200-monthly-monthly-subscription-150000-api-credits-post-v2-0-bulkwhois-live/llms.txt): Overall score 73.4 (Price 81, Accuracy 77, Cost to get started 68, Bundle 95, Performance 11), $1.333 per 1,000 domains
5. [WhoisFreaks, $200 monthly, Monthly Subscription, 150,000 API Credits: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoisfreaks/200-monthly-monthly-subscription-150000-api-credits-get-v2-0-whois-live/llms.txt): Overall score 73.0 (Price 81, Accuracy 76, Cost to get started 68, Bundle 95, Performance 9), $1.333 per 1,000 domains
6. [Searchwire, $10 pack: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/searchwire/10-pack/llms.txt): Overall score 71.5 (Price 100, Accuracy 44, Cost to get started 93, Bundle 88, Performance 29)
7. [DomScan, $6 monthly, Starter: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domscan/6-monthly-starter-get-v2-whois/llms.txt): Overall score 68.3 (Price 43, Accuracy 93, Cost to get started 90, Bundle 99, Performance 18), $0.72 per 1,000 domains
8. [WhoisJsonAPI, $129 monthly, Premium: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoisjsonapi/129-monthly-premium-get-v1-domain/llms.txt): Overall score 62.6 (Price 45, Accuracy 87, Cost to get started 71, Bundle 75, Performance 14), $0.258 per 1,000 domains
9. [Pushbuild, top-up: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/pushbuild/top-up/llms.txt): Overall score 53.5 (Price 23, Accuracy 74, Cost to get started 93, Bundle 100, Performance 8), $2.40 per 1,000 domains
10. [Leadgen Romania, €29 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/leadgen-romania/29-monthly/llms.txt): Overall score 50.9 (Price 46, Accuracy 48, Cost to get started 81, Bundle 92, Performance 8), $0.218 per 1,000 domains
11. [DR Checker, $15 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/dr-checker/15-monthly/llms.txt): Overall score 50.6 (Price 0, Accuracy 73, Cost to get started 87, Bundle 75, Performance 100), $75.00 per 1,000 domains
12. [Unstuckapi, $10 pack: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/unstuckapi/10-pack/llms.txt): Overall score 49.8 (Price 4, Accuracy 72, Cost to get started 93, Bundle 95, Performance 57), $10.00 per 1,000 domains
13. [Suprsonic, $29 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/suprsonic/29-monthly/llms.txt): Overall score 49.1 (Price 2, Accuracy 80, Cost to get started 82, Bundle 96, Performance 34), $14.50 per 1,000 domains
14. [fetcher.cloud, pay as you go: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/fetcher-cloud/pay-as-you-go/llms.txt): Overall score 45.1 (Price 7, Accuracy 87, Cost to get started 83, Bundle 0, Performance 35), $5.00 per 1,000 domains
15. [IP2Location.io, $499 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/ip2location-io/499-monthly/llms.txt): Overall score 42.9 (Price 9, Accuracy 72, Cost to get started 62, Bundle 75, Performance 9), $3.327 per 1,000 domains
16. [JsonWhoisAPI, pay as you go, Next 50,000: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/jsonwhoisapi/pay-as-you-go-next-50000/llms.txt): Overall score 33.4 (Price 5, Accuracy 53, Cost to get started 100, Bundle 0, Performance 37), $9.00 per 1,000 domains
17. [agentsvc.io, pay as you go: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/agentsvc-io/pay-as-you-go/llms.txt): $4.50 per 1,000 domains
18. [ALAPI, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/alapi/free/llms.txt): $0.00 per 1,000 domains
19. [APICK, top-up from ₩55,000 (about $41): Domain WHOIS API](https://datacircle.dev/domain-whois-apis/apick/top-up-from-55000/llms.txt): $75.07 per 1,000 domains
20. [APIclub, top-up: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/apiclub/top-up/llms.txt)
21. [Be1, top-up: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/be1/top-up/llms.txt): $2.388 per 1,000 domains
22. [C99.nl, $5 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/c99-nl/5-monthly/llms.txt): $0.033 per 1,000 domains
23. [Call402, pay as you go: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/call402/pay-as-you-go/llms.txt): $5.00 per 1,000 domains
24. [Chinaz, free, 100 calls: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/chinaz/free-100-calls-get-single-whois/llms.txt): $0.00 per 1,000 domains
25. [Chinaz, free, 100 calls: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/chinaz/free-100-calls-post-batch-whois/llms.txt): $0.00 per 1,000 domains
26. [Companyfacts, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/companyfacts/free/llms.txt): $0.00 per 1,000 domains
27. [Deepinfo, contact us: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/deepinfo/contact-us/llms.txt)
28. [DomainIndex, $39 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domainindex/39-monthly/llms.txt): $0.78 per 1,000 domains
29. [domainIQ, $49.95 monthly, Pro: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domainiq/49-95-monthly-pro-get-api-1000-requests-a-day/llms.txt): $1.665 per 1,000 domains
30. [domainIQ, $49.95 monthly, Pro: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domainiq/49-95-monthly-pro-get-api-retrieving-simple-whois-records/llms.txt)
31. [DomainRef, pay as you go, Pay per call: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domainref/pay-as-you-go-pay-per-call-get-v1-domain-age/llms.txt): $5.00 per 1,000 domains
32. [DomainRef, pay as you go, Pay per call: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domainref/pay-as-you-go-pay-per-call-get-v1-domain-check/llms.txt): $10.00 per 1,000 domains
33. [DomainTools, contact us, Enterprise: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domaintools/contact-us-enterprise-get-domain/llms.txt)
34. [DomainTools, contact us, Enterprise: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domaintools/contact-us-enterprise-get-iris-enrich/llms.txt)
35. [DomainTools, contact us, Enterprise: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domaintools/contact-us-enterprise-get-domain-rdap-parsed/llms.txt)
36. [DomainTools, contact us, Enterprise: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domaintools/contact-us-enterprise-get-domain-whois-parsed/llms.txt)
37. [DomainTools, contact us, Enterprise: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/domaintools/contact-us-enterprise-get-domain-whois/llms.txt)
38. [Enterno, free, Scout: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/enterno/free-scout/llms.txt): $0.00 per 1,000 domains
39. [FullHunt, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/fullhunt/free/llms.txt): $0.00 per 1,000 domains
40. [GetWhoisData, top-up: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/getwhoisdata/top-up/llms.txt): $2.00 per 1,000 domains
41. [GuGuData, CNY 49 (about $7) monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/gugudata/cny-49-monthly/llms.txt): $0.00057 per 1,000 domains
42. [HackerTarget, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/hackertarget/free/llms.txt): $0.00 per 1,000 domains
43. [Hexomatic, $99 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/hexomatic/99-monthly/llms.txt)
44. [How.is, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/how-is/free/llms.txt): $0.00 per 1,000 domains
45. [IPIPAI, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/ipipai/free/llms.txt): $0.00 per 1,000 domains
46. [IPScanner, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/ipscanner/free-get-whois-domain/llms.txt): $0.00 per 1,000 domains
47. [JsonWhois, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/jsonwhois/free/llms.txt): $0.00 per 1,000 domains
48. [Netlas, $49 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/netlas/49-monthly/llms.txt): $1.633 per 1,000 domains
49. [RDAPAPI, $9 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/rdapapi/9-monthly/llms.txt): $0.30 per 1,000 domains
50. [ScrapeWhale, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/scrapewhale/free/llms.txt): $0.00 per 1,000 domains
51. [Siftwright, $29 monthly: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/siftwright/29-monthly/llms.txt): $0.967 per 1,000 domains
52. [StartupRadar, contact us, Basic: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/startupradar/contact-us-basic/llms.txt)
53. [Sugra API, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/sugra-api/free-get-api-v1-network-domain-host-rdap/llms.txt): $0.00 per 1,000 domains
54. [Sugra API, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/sugra-api/free-get-api-v1-network-domain-host-whois/llms.txt): $0.00 per 1,000 domains
55. [Surepass, contact us: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/surepass/contact-us/llms.txt)
56. [Trustfull, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/trustfull/free/llms.txt): $0.00 per 1,000 domains
57. [Validin, contact us: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/validin/contact-us/llms.txt)
58. [VebAPI, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/vebapi/free/llms.txt): $0.00 per 1,000 domains
59. [ViewDNS.info, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/viewdns-info/free/llms.txt): $0.00 per 1,000 domains
60. [WhoAPI, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoapi/free/llms.txt): $0.00 per 1,000 domains
61. [WhoisGate, contact us: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoisgate/contact-us/llms.txt)
62. [WhoisJSON, free: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoisjson/free/llms.txt): $0.00 per 1,000 domains
63. [Whoxy, free, Education: Domain WHOIS API](https://datacircle.dev/domain-whois-apis/whoxy/free-education/llms.txt): $0.00 per 1,000 domains

[The whole sheet as CSV](https://datacircle.dev/gtm-apis.csv), [as JSON](https://datacircle.dev/gtm-apis.json), [the catalog's files as a zip](https://datacircle.dev/gtm-apis.zip), and [what each column and key means](https://datacircle.dev/fields)