WHOIS and RDAP
Mechanisms querying internet-resource registration data. RDAP replaces some WHOIS uses; public-data coverage depends on registry and privacy rules.
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Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
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Clear filtersWildcard DNS
Records using a * label to synthesise answers for certain missing names. They do not simply match every address or replace wildcard certificates.
Definition and sources