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  • Domain Name System - Wikipedia
    The Domain Name System (DNS) is a hierarchical and distributed name service that provides a naming system for computers, services, and other resources on the Internet or other Internet Protocol (IP) networks It associates various information with domain names (identification strings) assigned to each of the associated entities
  • Reverse DNS lookup - Wikipedia
    In computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name [1]
  • nslookup - Wikipedia
    nslookup operates in interactive or non-interactive mode When used interactively by invoking it without arguments or when the first argument is - (minus sign) and the second argument is a hostname or Internet address of a name server, the user issues parameter configurations or requests when presented with the nslookup prompt (>)
  • List of DNS record types - Wikipedia
    This list of DNS record types is an overview of resource records (RRs) permissible in zone files of the Domain Name System (DNS) It also contains pseudo-RRs
  • Comparison of DNS server software - Wikipedia
    Knot DNS is a free software authoritative DNS server by CZ NIC Knot DNS aims to be a fast, resilient DNS server usable for infrastructure (root and TLD) and DNS hosting services Knot DNS supports DNSSEC signing and among others hosts root zone (B, K, and L root name servers), several top-level domains
  • Wildcard DNS record - Wikipedia
    A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e g * example com The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly
  • OpenDNS - Wikipedia
    OpenDNS is an American company providing Domain Name System (DNS) resolution services—with features such as phishing protection, optional content filtering, and DNS lookup in its DNS servers—and a cloud computing security product suite, Umbrella, designed to protect enterprise customers from malware, botnets, phishing, and targeted online attacks
  • Domain Name System Security Extensions - Wikipedia
    Contains the DNSSEC signature for a record set DNS resolvers verify the signature with a public key, stored in a DNSKEY record DNSKEY Contains the public key that a DNS resolver uses to verify DNSSEC signatures in RRSIG records DS (delegation signer) Holds the name of a delegated zone References a DNSKEY record in the sub-delegated zone


















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