What are the fields of DNS records?
Each DNS record contains four main fields: Name, TTL, Type, and Data.
What are the types of DNS message?
The DNS protocol uses two types of DNS messages, queries and replies; both have the same format. Each message consists of a header and four sections: question, answer, authority, and an additional space. A header field (flags) controls the content of these four sections.
What is authoritative and Nonauthoritative DNS?
An authoritative answer comes from a nameserver that is considered authoritative for the domain which it’s returning a record for (one of the nameservers in the list for the domain you did a lookup on), and a non-authoritative answer comes from anywhere else (a nameserver not in the list for the domain you did a lookup …
What is Dnssec record?
The DNSSEC trust chain is a sequence of records that identify either a public key or a signature of a set of resource records. The root of this chain of trust is the root key which is maintained and managed by the operators of the DNS root. DNSSEC is defined by the IETF in RFCs 4033, 4034, and 4035.
What are the different types of DNS records?
Common DNS records are A, CNAME, MX, NS, TTL, TXT, and URL. Below we will walk through the most common DNS records. Returns a 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.
What are the different types of DNSKEY records?
Record class: Can be IN (default), CH (used for querying DNS server versions), or HS (uses DNS functionality to provide access to databases). Record type: Indicates that this is a DNSKEY record. Flags: Contains “zone keys” for DNSSEC keys or “secure entry points” for simple keys.
What is the SPF DNS record type?
“The SPF DNS Record Type”. Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1. IETF. sec. 3.1. doi: 10.17487/RFC7208. RFC 7208. Retrieved 26 April 2014. ^ Reid, Jim (4 July 2008). “draft-reid-dnsext-zs-01 – The Zone Status (ZS) DNS Resource Record”.
What is a text record in DNS?
Among all types of DNS components, the text record or the TXT is the only one that is specifically for the machine to read. It is a type of data that is readable by the machine only. For example, DKIM, sender policy framework, DMARC, and opportunistic encryption are a few types of data that are only for the machines to read.