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DNS zones contain the records for mapping domain names to IP addresses or other information. The resolution of a domain name to its assigned information is also referred to as forward resolution, and the DNS zones associated with such processes are often referred to as forward zones. [2]
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]
Start of [a zone of] authority record Specifies authoritative information about a DNS zone, including the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone. SRV: 33 RFC 2782 Service locator
Forward-confirmed reverse DNS (FCrDNS), also known as full-circle reverse DNS, double-reverse DNS, or iprev, is a networking parameter configuration in which a given IP address has both forward (name-to-address) and reverse (address-to-name) Domain Name System (DNS) entries that match each other. This is the standard configuration expected by ...
Zone transfer consists of a preamble, followed by the actual data transfer. The preamble comprises a lookup of the Start of Authority (SOA) resource record for the "zone apex", the node of the DNS namespace that is at the top of the "zone". The fields of this SOA resource record, in particular the "serial number", determine whether the actual ...
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No wildcard will match because subdel.example. exists and is a zone cut, putting host.subdel.example. into a different DNS zone. Even if host.subdel.example. does not exist in the other zone, a wildcard will not be used from the parent zone. ghost.*.example. MX No wildcard will match because *.example. exists, it is a wildcard domain, but it ...
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