ICANN Lookup
ICANN Lookup: A focused, free lookup tool for current domain, IP network, and ASN registration data. Ranked #12 of 27 in WHOIS Lookup Tools by our editors (7.6/10); pricing: Free plan; best for free authoritative domain and network lookups.
At a glance
- Editor score7.6 / 10
- PricingFree plan
- Best forFree authoritative domain and network lookups
- Free planYes
- Paid fromFree
- API accessNone
- Founded1998 · Los Angeles, California, USA
- Facts checked20 Sep 2026
Where it wins
- Covers domains, IP networks, and ASNs in one web tool
- Uses RDAP with WHOIS fallback when RDAP data is unavailable
- Routes nonpublic-data requests through RDRS
Where it doesn't
- No public lookup API access
- No bulk lookup capability
- No historical WHOIS access
Our verdict on ICANN Lookup
ICANN Lookup is a free, web-based registration data lookup tool operated by ICANN. It is designed for individual, professional, and organizational users who need current registration information for domain names, IP networks, ASNs, and other Internet number resources. Results are presented in a human-readable format, making the tool suitable for checking registration records without a paid plan or separate desktop application.
The lookup process uses RDAP-based queries and displays current data supplied by registries and registrars. When RDAP data is unavailable for a domain, ICANN Lookup may use the relevant registry operator’s WHOIS service instead. This gives the tool a focused role in current registration research across domains and Internet number resources, while real-time registry and registrar results help keep the displayed information tied to current records.
ICANN Lookup is a strong fit for users who need free, current lookups through a browser, including domain registration checks and IP network or ASN research. Its scope is narrower for teams that need automation or historical analysis: the published specifications show no public lookup API, bulk lookup, historical WHOIS access, or export formats. It also does not provide paid tiers or AI features. Choose it for straightforward, current registration data and nonpublic-data request routing through RDRS; choose another tool when recurring automated queries, bulk processing, or historical records are central requirements.
Your product? Our editors can test ICANN Lookup in depth and publish a review, labelled as paid · from $149/mo →
ICANN Lookup pricing
ICANN Lookup fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| API access | None |
| Bulk lookup | No |
| Historical WHOIS | No |
| RDAP support | Yes |
| Monthly lookup limit | Not verified |
| Export formats | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | lookup.icann.org |
| Facts checked | 20 Sep 2026 |
Alternatives to ICANN Lookup
- WhoisDataCenterA broad WHOIS research service with useful free allowances and paid data products.9.4
- WhoisXML API WHOIS APIA broad lookup API with RDAP, parsed data, integrations, and a free tier.9.2
- WhoxyA pay-as-you-go WHOIS platform for high-volume lookups, history, reverse search, and datasets.9.0
See all ICANN Lookup alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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