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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]
1.1.1.1 is a recursive DNS resolver. Cloudflare runs an authoritative DNS resolver with a network of over 20 million Internet properties. With the recursor and the resolver on the same network, some DNS queries can be answered directly. [third-party source needed]
The DNS resolver allows applications running in the operating system to translate human-friendly domain names into the numeric IP addresses that are required for access to resources on the local area network or the Internet. The process of determining IP addresses from domain names is called address resolution.
Knot Resolver is an open source modern resolver implementation designed for scalability, resiliency, and flexibility. Its core architecture is tiny and efficient, and most of the rich features are implemented as optional modules, which limits attack surface and improves performance.
Before a computer can connect to an external network resource by name, it must convert that alpha-numeric name (e.g., wikipedia.org) into its corresponding network address called an IP address (e.g., 66.230.200.10). The computer performs this conversion by contacting one of a number of special computers called name servers, which have tables of ...
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 (>).
The method became popular after it was determined that a simple domain name block was used to enforce the ban, which would easily be bypassed by using an alternate DNS resolver. Activists distributed information on how to use the service, and spray-painted the IP addresses used by the service as graffiti on buildings. Following the discovery of ...
The contents of the root zone file is a list of names and numeric IP addresses of the root domain authoritative DNS servers for all top-level domains (TLDs) such as com, org, edu, and the country code top-level domains (it also includes that info for root domain, the dot). On 12 December 2004, 773 different authoritative servers for the TLDs ...