A direct, browser-based lookup for domain, IP, and autonomous system registration data.https://rdaplookup.org/https://rdaplookup.org/guides/why-rdap-lookup-fails-in-a-browser/https://rdaplookup.org/guides/why-rdap-lookup-fails-in-a-browser/Learn why a browser-based RDAP lookup can fail because of CORS, endpoint errors, redirects, rate limits or invalid responses, and how to identify the failure without mistaking it for missing registration data.Mon, 21 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/how-to-find-an-abuse-contact-for-an-ip-address/https://rdaplookup.org/guides/how-to-find-an-abuse-contact-for-an-ip-address/Use an IP address RDAP response to find the appropriate abuse contact, understand nested entities, and prepare an evidence-based report without mistaking registration data for attribution.Mon, 21 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/how-to-read-an-asn-rdap-response/https://rdaplookup.org/guides/how-to-read-an-asn-rdap-response/Learn how to read an ASN RDAP response, including autnum ranges, registration status, entities, RIR data and the limits of routing attribution.Fri, 18 Sep 2026 14:30:00 GMThttps://rdaplookup.org/guides/how-to-read-an-ip-address-rdap-response/https://rdaplookup.org/guides/how-to-read-an-ip-address-rdap-response/Learn how to read an IP address RDAP response, including network ranges, CIDR blocks, allocation hierarchy, RIR data, entities and abuse contacts.Thu, 17 Sep 2026 14:30:00 GMThttps://rdaplookup.org/updates/south-korea-kr-joins-iana-rdap-registry/https://rdaplookup.org/updates/south-korea-kr-joins-iana-rdap-registry/IANA now lists an official RDAP service for South Korea's .kr and .한국 country-code domains, expanding standards-based RDAP discovery.Thu, 17 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/how-to-query-an-rdap-server-with-curl/https://rdaplookup.org/guides/how-to-query-an-rdap-server-with-curl/Learn how to query RDAP servers with cURL, follow redirects, inspect HTTP errors, format JSON with jq and look up domains, IPs and ASNs.Sun, 13 Sep 2026 12:00:00 GMThttps://rdaplookup.org/guides/how-to-read-an-rdap-response/https://rdaplookup.org/guides/how-to-read-an-rdap-response/Learn how to read a domain RDAP response, including statuses, entities, events, nameservers, DNSSEC, notices, redaction and jCard contact data.Sun, 13 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/how-to-find-rdap-server-for-a-domain/https://rdaplookup.org/guides/how-to-find-rdap-server-for-a-domain/Learn how RDAP clients use IANA bootstrap files to find the correct server for a domain, including redirects, missing TLDs and rate limits.Fri, 11 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/moving-from-whois-to-rdap/https://rdaplookup.org/guides/moving-from-whois-to-rdap/Learn how to migrate WHOIS integrations to RDAP using service discovery, structured responses, error handling, testing and safe fallbacks.Mon, 07 Sep 2026 00:00:00 GMThttps://rdaplookup.org/guides/understanding-rdap/https://rdaplookup.org/guides/understanding-rdap/How RDAP finds a service, constructs a query, and returns policy-dependent registration data.Sat, 05 Sep 2026 00:00:00 GMT