What is domain SOA record?

What is domain SOA record?

A Start of Authority (SOA) resource record indicates which Domain Name Server (DNS) is the best source of information for the specified domain. Every domain must have an SOA record. When you add a domain to the DNS, the email address that you enter is added to the SOA record for the domain.

Do I need SOA record?

SOA records are mandatory. You have to stuff something in that AUTHORITY section where it is required by RFC if you expect the rest of the internet to play nicely with you.

How do I find my SOA record domain?

First, you need to get the current serial number

1. Open a command window.
2. Type nslookup and press [Enter].
3. Switch to querying SOA records by typing set type=soa and press [Enter].
4. Type the name of the domain name in question and press [Enter].

What is the difference between SOA and NS record?

NS: Name server record, which delegates a DNS zone to an authoritative server. SOA: Start of authority, used to designate the primary name server and administrator responsible for a zone. Each zone hosted on a DNS server must have an SOA (start of authority) record.

How does zone transfer work?

Zone transfer is the process of copying the contents of the zone file on a primary DNS server to a secondary DNS server. Using zone transfer provides fault tolerance by synchronizing the zone file in a primary DNS server with the zone file in a secondary DNS server.

How many SOA records can there be in a file?

A Zone file can contain only one SOA Record. A properly optimized and updated SOA record can reduce bandwidth between nameservers, increase the speed of website access and ensure the site is alive even when the primary DNS server is down.

What is SOA record used for?

The DNS ‘start of authority’ (SOA) record stores important information about a domain or zone such as the email address of the administrator, when the domain was last updated, and how long the server should wait between refreshes. All DNS zones need an SOA record in order to conform to IETF standards.

What is NS route53?

Amazon Route 53 automatically creates a name server (NS) record that has the same name as your hosted zone. It lists the four name servers that are the authoritative name servers for your hosted zone. Except in rare circumstances, we recommend that you don’t add, change, or delete name servers in this record.

When to include a SOA record in DNS?

An SOA record is a Start of Authority. Every domain must have a Start of Authority record at the cutover point where the domain is delegated from its parent domain. For example, if the domain mycompany.com is delegated to DNSimple name servers, we must include an SOA record for the name mycompany.com in our authoritative DNS…

How does a SOA record look like in zone file?

In practice, SOA records look like this: In this zone file snippet, you can see how – in order to make the placement clearer – we have entered more information than just the SOA record. The file begins with the domain name specification (in this case, example.org) and the TTL.

How many fields are there in a SOA record?

The SOA record ends with three to four time specifications – each in seconds. The first field (“ Refresh ”) specifies the time lag until the slave again asks the master for a current version of the zone file.

What are the resource records in a DNS zone?

Start of Authority (SOA) record —specifies the primary authoritative name server for the DNS Zone. After these two records, the zone file can contain any number of resource records, which can include: Name Server records (NS)— specifies that a specific DNS Zone, such as “example.com” is delegated to a specific authoritative name server