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When constructing the query packet, DNS lookup removes the first part of the domain name (the client host name) and replaces it with wpad. Then, it "moves up" in the hierarchy by removing more parts of the domain name, until it finds a WPAD PAC file or leaves the current organisation. The browser guesses where the organisation boundaries are.
One example of blocking malicious domains is to stop botnets, by interrupting the DNS names the botnet is programmed to use for coordination. [8] Another use is to block ad serving sites, either using a host's file-based sinkhole [9] or by locally running a DNS server (e.g., using a Pi-hole). Local DNS servers effectively block ads for all ...
Any device that supports VPN can use Pi-Hole on a cellular network or a home network without having a DNS server configured. [16] Integrating Pi-hole with a VPN allows users to extend ad-blocking and tracker-blocking capabilities to devices outside their local network, providing consistent protection while on the go.
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 ...
The AS112 project is a group of volunteer name server operators joined in an autonomous system. They run anycasted instances of the name servers that answer reverse DNS lookups for private network and link-local addresses sent to the public Internet. These queries are ambiguous by their nature, and cannot be answered correctly.
Caching of proxy auto-configuration results by domain name in Microsoft's Internet Explorer 5.5 or newer limits the flexibility of the PAC standard. In effect, you can choose the proxy based on the domain name, but not on the path of the URL. Alternatively, you need to disable caching of proxy auto-configuration results by editing the registry. [7]
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet.A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [1]
A provider-independent address space (PI) is a block of IP addresses assigned by a regional Internet registry (RIR) directly to an end-user organization. [1] The user must contract [ 2 ] with a local Internet registry (LIR) through an Internet service provider to obtain routing of the address block within the Internet .