Today we will explore one of the most fundamental DNS record types, which exactly is the SOA record. First, we will see what is its definition and then we will take a look at its structure. Finally, we will explain why is SOA record so critical for properly working the Domain Name System.
SOA record – Meaning
The most essential component of a Zone file is an SOA (Start of Authority) record. The SOA record is a mechanism for the domain administrator to provide basic details about the domain, such as how frequently it is updated, when it was last updated when to check back for more information, what the administrator’s email address is, and so forth. It establishes the general attributes of the zone and is the first DNS record in a zone file. Only one SOA record may be present in a Zone file.