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2. Multicast DNS - Wikipedia

   en.wikipedia.org/wiki/Multicast_DNS

   Multicast DNS. In computer networking, the multicast DNS ( mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server. It is a zero-configuration service, using essentially the same programming interfaces, packet formats and operating semantics as unicast Domain Name System (DNS).

3. EDNS Client Subnet - Wikipedia

   en.wikipedia.org/wiki/EDNS_Client_Subnet

   EDNS Client Subnet. EDNS Client Subnet ( ECS) is an option in the Extension Mechanisms for DNS that allows a recursive DNS resolver to specify the subnetwork for the host or client on whose behalf it is making a DNS query. This is generally intended to help speed up the delivery of data from content delivery networks (CDNs), by allowing better ...

4. Domain name registrar - Wikipedia

   en.wikipedia.org/wiki/Domain_name_registrar

   The Domain Name System Security Extensions is a suite of Internet Engineering Task Force (IETF) specifications for securing certain kinds of information provided by the Domain Name System. This involves a registrar processing public key data and creating DS records for addition into the parent zone.

5. Split-horizon DNS - Wikipedia

   en.wikipedia.org/wiki/Split-horizon_DNS

   Split-horizon DNS. In computer networking, split-horizon DNS (also known as split-view DNS, split-brain DNS, or split DNS) is the facility of a Domain Name System (DNS) implementation to provide different sets of DNS information, usually selected by the source address of the DNS request. This facility can provide a mechanism for security and ...

6. Domain name registry - Wikipedia

   en.wikipedia.org/wiki/Domain_name_registry

   Domain name registry. A domain name registry is a database of all domain names and the associated registrant information in the top level domains of the Domain Name System (DNS) of the Internet that enables third party entities to request administrative control of a domain name. Most registries operate on the top-level and second-level of the DNS.

7. DNS leak - Wikipedia

   en.wikipedia.org/wiki/DNS_leak

   DNS leak. A DNS leak is a security flaw that allows DNS requests to be revealed to ISP DNS servers, despite the use of a VPN service to attempt to conceal them. [1] Although primarily of concern to VPN users, it is also possible to prevent it for proxy and direct internet users.