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Address record. Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host, but it is also used for DNSBLs, storing subnet masks in RFC 1101, etc. AAAA. 28. RFC 3596 [2] IPv6 address record. Returns a 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.
Authoritative DNS servers use this record to calculate and determine which NSEC3 records to include in responses to DNSSEC requests for non-existing names/types. When DNSSEC is used, each answer to a DNS lookup contains an RRSIG DNS record, in addition to the record type that was requested.
A Canonical Name (CNAME) record is a type of resource record in the Domain Name System (DNS) that maps one domain name (an alias) to another (the canonical name). [1] This can prove convenient when running multiple services (like an FTP server and a web server , each running on different ports) from a single IP address .
In January 2019, Google Public DNS adopted the DNS over TLS protocol. DNSSEC. At the launch of Google Public DNS, it did not directly support DNSSEC. Although RRSIG records could be queried, the AD (Authenticated Data) flag was not set in the launch version, meaning the server was unable to validate signatures for all of the data.
A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database. The most common types of records stored in the DNS database are for start of authority ( SOA ), IP addresses ( A and AAAA ), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS ...
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] The process of reverse resolving of an IP address uses PTR ...
Microsoft DNS manager supports DNSSEC from Windows Server 2012 onwards. Some of the DNSSEC records can not be directly added but are generated during zone signing and managed as such. DNS software homogeneity. Primary reasons for DNS providers (especially root operators) to use different DNS servers is code diversity and application performance.
dig, a utility that interrogates DNS servers directly for troubleshooting and system administration purposes. host is a simple utility for performing Domain Name System lookups. List of DNS record types - possible types of records stored and queried within DNS; Root name server - top-level name servers providing top level domain name resolution ...