DNS SOA Record

DNS SOA Record stands forDomain Name System (DNS) Start of Authority (SOA) Record and contains administrative information about a domain or zone.

What’s an SOA Record?

SOA records contain administrative information such as the name of the domain or zone, serial numbers, and refresh information. DNS servers are often set up in clusters with master and secondary DNS zones to allow for DNS redundancy on a network to prevent total outages.

In order for the DNS zones to stay in sync, they perform zone transfers. The information provided within an SOA record such as the serial number and timing information for refresh, retry, and expiry enables the synchronization.

An SOA record will also contain the email address of the administrator of that zone to communicate issues.

Why do I need a SOA Record

A SOA Record includes

Name

menandmice.com

Zone Class

IN

MNAME

ns1.menandmice.com

RNAME

admin.menandmice.com

Serial

2020080303

Refresh

86400

Retry

7200

Expire

4000000

TTL

3600

Though the email address in RNAME is written as admin.menandmice.com, which is correct in this case, it stands for admin@menandmice.com. The @ sign is not possible in this contect within the record.

How to create an SOA Record