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I'm having some trouble reading SOA records. I get the following response after using dig to fetch the SOA record of a domain I'm in control of.
SOA ns1.example.com. xxx.gmail.com. 2013041357 14400 14400 1209600 86400 How am I supposed to know which value is associated with each field? According to this article a SOA record can have nine fields.
I am imagining that each space signifies the end of a value and I can see that the second value is the email address. But how would I determine which is the refresh value and which is the retry value? They're just numbers with no field names next to them!
Am I missing something here? Thanks in advance.
294
A start of authority (SOA) record is information stored in a domain name system (DNS) zone about that zone and about other DNS records. A DNS zone is the part of a domain for which an individual DNS server is responsible. Each zone contains a single SOA record.
Every DNS zone registered in ClouDNS must have an SOA (Start of Authority) record. There is one SOA record per zone.
The SOA means Start Of Authority. The SOA record defines the beginning of the authority DNS zone and specifies the global parameters for the zone. These parameters include the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone.
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. Obviously they aren't really authoritative for co.uk , but this at least tells other nameservers what the negative TTL should be.
If you use +multiline dig parameter, you'll see a more verbose output.
dig SOA +multiline yahoo.com yahoo.com. 1800 IN SOA ns1.yahoo.com. hostmaster.yahoo-inc.com. ( 2013041300 ; serial 3600 ; refresh (1 hour) 300 ; retry (5 minutes) 1814400 ; expire (3 weeks) 600 ; minimum (10 minutes) ) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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