Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
IP2WHOIS is a domain intelligence service that offers a web-based Domain WHOIS Lookup, as well as developer-oriented Domain WHOIS API and Hosted Domain API products. The former is used to look up domain registration details, registrar information, key dates, status, contacts, and name servers; the latter helps discover domains hosted on a given IP address, making it useful for network mapping, threat intelligence, and hosting analysis.
Based on the available text, IP2WHOIS has a fairly clear API design: a REST GET endpoint at https://api.ip2whois.com/v2, with parameters including API key, domain, and response format, supporting JSON/XML. Response fields cover domain_id, creation/update/expiration dates, domain age, registrar, registrant/admin/tech/billing contact information, and nameservers. The official site states support for 1221 TLDs and 634 ccTLDs, as well as IPv4/IPv6 reverse IP lookups. SDKs and examples are available for multiple languages, including PHP, Ruby, Python, Node.js, Go, Java, and .NET, making integration relatively developer-friendly.
Its ecosystem integrations are one of the highlights. The official site lists Make, Pipedream, Zapier, Command Line, Integrately, Pabbly, Quickwork, Steampipe, viaSocket, OttoKit, MCP, and others, which can be used for automation workflows and AI Agent queries. The documentation includes parameter tables, response fields, sample responses, multi-language code examples, and error codes, which is sufficient for basic integration. In terms of pricing, the text only clearly states that the free API allows up to 500 WHOIS domain queries per month. Paid plan pricing is not disclosed, but the presence of an “Insufficient credits” error code suggests there may be a quota or credit-based system.
Strengths include comprehensive WHOIS fields, clearly stated TLD coverage, a free quota for testing, and a rich set of SDKs and no-code integrations. It is suitable for security teams, researchers, SaaS risk control, fraud investigations, and developers who need bulk domain monitoring. Limitations include the lack of information about open source availability, self-hosting, full pricing, rate-limit policies, and enterprise support details. Also, due to WHOIS privacy protection, registrant information may be replaced by proxy details or left blank.
The crawled text does not provide information about availability from mainland China, payment methods, or local nodes, so access from China is rated as “unknown.” If using it for domestic business in China, it is recommended to first test connectivity, latency, and stability with the free API. Alternatives to evaluate include WhoisXML API, DomainTools, SecurityTrails, or ICANN Lookup.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on ip2whois.com official site.
ip2whois.com is an Malaysia API & Data (Whois/Api) provider. TG4G tracks its product information, an overall rating of 8.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach ip2whois.com directly.