Best WhoisXML API WHOIS API Alternatives in 2026
The top WhoisXML API WHOIS API alternatives are WhoisDataCenter, Whoxy and WhoisJSON API: 15 WHOIS lookup tools our editors would look at instead of WhoisXML API WHOIS API, in our ranking order.
WhoisXML API WHOIS API: A broad lookup API with RDAP, parsed data, integrations, and a free tier. Where it falls short: historical WHOIS is not included.
Switching from WhoisXML API WHOIS API? For most whois lookup tools buyers the best WhoisXML API WHOIS API alternative is WhoisDataCenter, built for investigators needing current and historical WHOIS. On a budget, RDAP API starts at $9/mo. WhoisFreaks WHOIS API offers the most monthly lookup limit (50000 /mo).
Why People Look for a WhoisXML API WHOIS API Alternative
- Historical WHOIS is not included
- Bulk lookup uses a separate Bulk WHOIS API
- Paid access is handled through a contact form
- No historical WHOIS — 4 of the alternatives below have it
Quick Picks by What You Need
- Best overallWhoisDataCenter9.4
Investigators needing current and historical WHOIS
Visit WhoisDataCenter - Lowest priceRDAP API8.2
Paid plans from $9/mo
Visit RDAP API - Best free optionWhoisDataCenter9.4
Has a free plan
Visit WhoisDataCenter - Most monthly lookup limitWhoisFreaks WHOIS API8.6
50000 /mo
Visit WhoisFreaks WHOIS API - Best for historical whoisWhoisDataCenter9.4
Historical WHOIS (WhoisXML API WHOIS API: no)
Visit WhoisDataCenter
All 15 WhoisXML API WHOIS API Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
-
Best forInvestigators needing current and historical WHOIS
- Better than WhoisXML API WHOIS API:
- Historical WHOIS
- Editor score 9.4 vs 9.2
A broad WHOIS research service with useful free allowances and paid data products.
- Historical WHOIS
9.4/10★★★★★Try WhoisDataCenter -
Best forLarge-scale WHOIS API and dataset buyers
- Better than WhoisXML API WHOIS API:
- Historical WHOIS
A pay-as-you-go WHOIS platform for high-volume lookups, history, reverse search, and datasets.
- Historical WHOIS
- Bulk lookup
- RDAP support
9.0/10★★★★☆Visit Whoxy -
Best forAPI users needing WHOIS plus domain intelligence
A focused domain-intelligence API with a free tier and plans from $10/month.
8.8/10★★★★☆Visit WhoisJSON -
Best forHigh-volume WHOIS intelligence teams
- Better than WhoisXML API WHOIS API:
- Historical WHOIS
A broad WHOIS API for security, research, and domain intelligence at scale.
- Historical WHOIS
- Bulk lookup
- RDAP support
8.6/10★★★★☆Visit WhoisFreaks -
Best forTechnical users wanting open-source RDAP
A flexible, open-source RDAP client for technical users who want control over queries and output.
- RDAP support
8.4/10★★★★☆Visit OpenRDAP -
Best forDevelopers needing a polished RDAP API
A developer-focused lookup API with normalized JSON, bulk requests, and broad lookup coverage.
- Bulk lookup
- RDAP support
8.2/10★★★★☆Visit RDAP API -
Best forTeams wanting web lookup plus an API
A practical WHOIS and RDAP lookup service with web access, parsed results, exports, and APIs.
- RDAP support
8.0/10★★★★☆Visit ViewDNS -
Best forWHOIS users wanting reverse and DNS tools
A broad WHOIS, DNS, reverse lookup, and API toolkit with free web access.
- RDAP support
7.9/10★★★★☆Visit ViewDNS.info -
Best forBroad-TLD WHOIS API integrations
A broad-TLD WHOIS API with a free tier and paid automation options.
7.8/10★★★★☆Visit IP2WHOIS -
Best forFree Windows desktop WHOIS research
A free Windows WHOIS tool for multi-domain research and export.
- Bulk lookup
7.7/10★★★★☆Visit NirSoft -
Best forFree authoritative domain and network lookups
A focused, free lookup tool for current domain, IP network, and ASN registration data.
- RDAP support
7.6/10★★★★☆Visit ICANN Lookup -
Best forDevelopers wanting an open RDAP endpoint
An open-source RDAP client with web access and a documented HTTP endpoint.
- RDAP support
7.4/10★★★★☆Visit RDAP.org -
Best forProfessional parsed WHOIS API coverage
A parsed WHOIS API with broad TLD coverage and live access on higher tiers.
7.2/10★★★★☆Visit WhoAPI -
Best forDevelopers needing asynchronous bulk WHOIS
A focused API for structured WHOIS lookups, bulk processing, and asynchronous retrieval.
- Bulk lookup
7.1/10★★★★☆Visit Bulk WHOIS API -
Best forAPI users focused on historical WHOIS retrieval
- Better than WhoisXML API WHOIS API:
- Historical WHOIS
A focused API for retrieving historical WHOIS records with flexible query and output options.
- Historical WHOIS
7.0/10★★★★☆Visit WhoisXML API
WhoisXML API WHOIS API Alternatives: Common Questions
What is the best alternative to WhoisXML API WHOIS API?
WhoisDataCenter: #1 in our WHOIS Lookup Tools ranking, with an editor score of 9.4 out of 10. A broad WHOIS research service with useful free allowances and paid data products.
Is there a free alternative to WhoisXML API WHOIS API?
Yes. WhoisDataCenter, WhoisJSON API, OpenRDAP, ViewDNS WHOIS Lookup and ViewDNS.info have a free plan or a free tier (10 of the 15 alternatives on this page).
What is the cheapest paid alternative to WhoisXML API WHOIS API?
Of the alternatives here that publish a price, RDAP API starts lowest, at $9/mo.
Why do people look for WhoisXML API WHOIS API alternatives?
Historical WHOIS is not included; Bulk lookup uses a separate Bulk WHOIS API; Paid access is handled through a contact form.
Which WhoisXML API WHOIS API alternative has the most monthly lookup limit?
WhoisFreaks WHOIS API, with 50000 /mo.
How do I switch from WhoisXML API WHOIS API?
Export your data from WhoisXML API WHOIS API (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel WhoisXML API WHOIS API.
How to Switch from WhoisXML API WHOIS API
- Export your data from WhoisXML API WHOIS API (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel WhoisXML API WHOIS API.
WhoisXML API WHOIS API vs Each Alternative
| # | Tool | Free plan | Paid from | API access | Bulk lookup | RDAP support | Score |
|---|---|---|---|---|---|---|---|
| 2 | WhoisXML API WHOIS API | Yes | Full | Yes | Yes | 9.2 | |
| 1 | WhoisDataCenter | Yes | Full | 9.4 | |||
| 2 | Whoxy | No | $10/unit one-time | Full | Yes | Yes | 9.0 |
| 3 | WhoisJSON API | Yes | $10/mo | 8.8 | |||
| 4 | WhoisFreaks WHOIS API | No | $63/mo | Full | Yes | Yes | 8.6 |
| 5 | OpenRDAP | Yes | Free | Full | Yes | 8.4 | |
| 6 | RDAP API | No | $9/mo | Full | Yes | Yes | 8.2 |
| 7 | ViewDNS WHOIS Lookup | Yes | Full | Yes | 8.0 | ||
| 8 | ViewDNS.info | Yes | Full | Yes | 7.9 | ||
| 9 | IP2Location.io IP2WHOIS | Yes | $49/mo | Full | No | 7.8 | |
| 10 | WhoisThisDomain | Yes | Free | None | Yes | 7.7 | |
| 11 | ICANN Lookup | Yes | Free | None | No | Yes | 7.6 |
| 12 | RDAP.org Lookup | Free | Full | Yes | 7.4 | ||
| 13 | WhoAPI | No | $52/mo | Full | No | 7.2 | |
| 14 | Bulk WHOIS API | No | $9.99/mo | Full | Yes | 7.1 | |
| 15 | WhoisXML API WHOIS History API | Yes | Full | 7.0 |
Head-to-Head
- WhoisXML API WHOIS API vs WhoisDataCenter
- WhoisXML API WHOIS API vs Whoxy
- WhoisXML API WHOIS API vs WhoisJSON API
- WhoisXML API WHOIS API vs WhoisFreaks WHOIS API
- WhoisXML API WHOIS API vs OpenRDAP
- WhoisXML API WHOIS API vs RDAP API
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update