Which record specifies authoritative information about a dns zone such as primary name server, email address of the domain administrator, and domain serial number?

Contents • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • (A) IPv4 Host record, used to point a host name to an IPv4 address. See TTL — Time to Live recommended value is 1 hour. You may need more or less time based on your network’s needs. IP Address — Enter the IPv4 address for the host defined by this record and zone. Add Dynamic DNS Service —Selecting this check box will override the TTL value setting it to 1 minute. This is to accommodate the need for Dynamic DNS to propagate changes quickly. Add — Click to add the record to your zone. (AAAA) IPv6 Host record, used to point a host name to an IPv6 address. IPv6 is still in the early adopter phase of its lifecycle and is not as prevalent as IPv4. See TTL — Time to Live recommended value is 1 hour. You may need more or less time based on your network’s needs. IP Address — Enter the IPv6 address for the host defined by this record and zone. Add Dynamic DNS Service —Selecting this check box will override the TTL value setting it to 1 minute. This is to accommodate the need for Dynamic DNS to propagate changes quickly. Add — Click to add the record to your zone. (ALIAS) Used to create a private pseudo-record to allow the CNAME functionality at the apex of a zone for A & AAAA record types. Valid for Dyn’s Managed DNS customer accounts only. This is a non-standard use of record types. View our Note: If you choose to point your ALIAS record at an asset managed by your Dyn Managed DNS account, you may see higher tha...

DNS is a network-based service that resolves domain names to IP addresses. For a small, isolated network you can use entries in the /etc/hosts file to provide the name-to-address mapping. However, most networks that are connected to the Internet use DNS. DNS is a hierarchical and distributed database. Consider the fully qualified domain name (FQDN) wiki.us.mydom.com. In this example, the top-level domain is com, mydom is a sub-domain of com, us is a sub-domain of mydom, and wiki is the host name. Each of these domains are grouped into zones for administrative purposes. A DNS server, or name server, stores the information that is needed to resolve the component domains inside a zone. In addition, a zone's DNS server stores pointers to the other DNS servers that are responsible for resolving each sub-domain. If an external client requests its local name server to resolve a FQDN, such as wiki.us.mydom.com to an IP address for which that server is not authoritative, the server queries a root name server for the address of a name server that is authoritative for the .com domain. This server then provides the IP address of another name server authoritative for the mydom.com domain, which in turn provides the IP address of the authoritative name server for us.mydom.com, and so on. The querying process ends with the IP address for the FQDN being provided to the external client that made the request. This process is known as a recursive query, where the local name server handles ea...

All For example, when creating a new DNS zone for ohmcar.org (a fictitious electric car company) then the process of zone creation would include the creation of a SOA record at ohmcar.org. We discuss Maintenance and creation of the SOA record is a task for the DNS server administrator of the zone. The webmaster for a domain would not generally need to add or change the SOA record. The SOA record at ohmcar.org indicates that a DNS zone begins at ohmcar.org and extends downwards in the DNS tree to encompass all the DNS names that are children of ohmcar.org. The names www.ohmcar.org and apps.backend.ohmcar.org would be part of this zone, as would the name ohmcar.org itself. The SOA record does more than just indicate that a zone exists. It also gives some important information about the zone and controls negative caching for non-existent names within the zone. More on that later. DNS records replicated (cloned) across DNS servers using the configuration of the SOA record. By NsLookup.io. Licensed under NS records and end of authority The SOA record starts authority for a zone. Alongside the SOA record, the existence of a zone is also defined by a set of Authority can also end at particular points in the DNS tree below the root of the zone in a process called delegation. We discuss this in depth in our It is confusing that NS records are used both at the zone root to identify the Name Servers for the zone and also at points below the zone root as part of delegation. For now, i...

Oracle Cloud Infrastructure normalizes all RDATA into the most machine readable format. The returned presentation of your RDATA may differ from its initial input. Example: The RDATA for the ALIAS, CNAME, DNAME, MX, and NS record types may contain one or more absolute domain names. If the specified RDATA for one of these record types does not end in a dot or period to represent the root, the period will be added. www.example.com --> www.example.com. You can use various DNS libraries to normalize your RDATA before input. A An address record used to point a hostname to an IPv4 address. For more information about A records, see AAAA An address record used point a hostname at an IPv6 address. For more information about AAAA records, see ALIAS A non-standard DNS record type that allows CNAME-like functionality at the apex of a zone . ALIAS records cannot co-exist with steering policy attachments on a domain. CAA A Certification Authority Authorization record allows a domain name holder to specify one or more Certification Authorities authorized to issue certificates for that domain . For more information about CAA records, see CERT A Certificate record stores public key certificates and related certificate revocation lists in the DNS. For more information about CERT records, see CNAME A Canonical Name record identifies the canonical name for a domain. For more information about CNAME records, see CSYNC A Child-to-Parent Synchronization record syncs records from a child zone to a...

KX 36 RFC 2230 Key Exchanger record Used with some cryptographic systems (not including DNSSEC) to identify a key management agent for the associated domain-name. Note that this has nothing to do with DNS Security. It is Informational status, rather than being on the IETF standards-track. It has always had limited deployment, but is still in use. 29 RFC 1876 Location record Specifies a geographical location associated with a domain name 15 Mail exchange record List of mail exchange servers that accept email for a domain 35 RFC 3403 Naming Authority Pointer Allows regular-expression-based rewriting of domain names which can then be used as SIG 24 RFC 2535 Signature Signature record used in SIG(0) (RFC 2931) and TKEY (RFC 2930). SMIMEA 53 RFC 8162 S/MIME cert association Associates an S/MIME certificate with a domain name for sender authentication. 6 Start of [a zone of] authority record Specifies authoritative information about a 33 RFC 2782 Service locator Generalized service location record, used for newer protocols instead of creating protocol-specific records such as MX. 63 RFC 8976 Message Digests for DNS Zones Provides a Other types and pseudo-RRs [ ] Other types of records simply provide some types of information (for example, an HINFO record gives a description of the type of computer/OS a host uses), or others return data used in experimental features. The "type" field is also used in the protocol for various operations. Type Type id. Defining RFC Description Funct...

You'll want the SOA (Start of Authority) record for a given domain name, and this is how you accomplish it using the universally available nslookup command line tool: command line> nslookup > set querytype=soa > stackoverflow.com Server: 217.30.180.230 Address: 217.30.180.230#53 Non-authoritative answer: stackoverflow.com origin = ns51.domaincontrol.com # ("primary name server" on Windows) mail addr = dns.jomax.net # ("responsible mail addr" on Windows) serial = 2008041300 refresh = 28800 retry = 7200 expire = 604800 minimum = 86400 Authoritative answers can be found from: stackoverflow.com nameserver = ns52.domaincontrol.com. stackoverflow.com nameserver = ns51.domaincontrol.com. The origin (or primary name server on Windows) line tells you that ns51.domaincontrol is the main name server for stackoverflow.com. At the end of output all authoritative servers, including backup servers for the given domain, are listed. You used the singular in your question but there are typically several authoritative name servers, the RFC 1034 recommends at least two. Unless you mean "primary name server" and not "authoritative name server". The secondary name servers are authoritative. To find out the name servers of a domain on Unix: % dig +short NS stackoverflow.com ns52.domaincontrol.com. ns51.domaincontrol.com. To find out the server listed as primary (the notion of "primary" is quite fuzzy these days and typically has no good answer): % dig +short SOA stackoverflow.com | cut -d' ' -f1...

Contents • A Record • AAAA Record • AFSDB Record • ATMA Record • CAA Record • CERT Record • CNAME Record • DHCID Record • DNAME Record • DNSKEY Record • DS Record • HINFO Record • ISDN Record • MB, MG, MINFO, MR Records • MX Record • NAPTR Record • NSAP Record • NSEC Record • NSEC3 Record • NSEC3PARAM Record • PTR Record • RP Record • RRSIG Record • RT Record • SOA Record • SRV Record • TLSA Record • TXT Record • X25 Record A Record A (address) records are one of the most basic and commonly used DNS record types. They translate domain names and store them as IP addresses. A records can only hold IPv4 addresses. An example of an A record is: Domain name: Record type: Value: TTL example-website.com @ A 192.0.0.1 14400 In the example above, the record is made up of the following elements: • Domain name: Contains the domain name of the website. The "@" symbol indicates that the record contains the root domain name. • Record type: Indicates the usage of an A record type. • Value: Contains the IP address associated with the domain name. • TTL: Lists the record's TTL (Time to Live) in seconds. The default value is 14400, which means the record expires after 14400 seconds (240 minutes). AAAA Record AAAA records work the same as A records in that they store IP addresses connected to domain names. The only difference is that AAAA records hold IPv6 addresses. Note: Learn more about the AFSDB Record AFSDB records connect a domain name to an AFS (Andrew File System) number. This record...