uvlf.sk DNS Report

SUCCESS Parent nameservers know A records for your domain, Very good !

SUCCESS The DNS report did not detect any discrepancies between the glue provided by the parent servers and that provided by your authoritative DNS servers.

SUCCESS Nameservers do include corresponding A records when asked for your NS records. This ensures that your DNS servers know the A records corresponding to all your NS records.

SUCCESS The NS records at all your nameservers are identical.

SUCCESS All of your nameservers listed at the parent nameservers responded.

SUCCESS All of the NS records that your nameservers report are valid (no IPs or partial domain names).

SUCCESS All the nameservers listed at the parent servers answer authoritatively for your domain.

SUCCESS All your nameservers are also listed at the parent servers.

SUCCESS All of the nameservers listed at the parent nameservers are also listed as NS records at your nameservers.

SUCCESS Nameservers are in a different networks.

SUCCESS All of your NS records appear to use public IPs.

SUCCESS All your nameservers agree that your SOA serial number is 2020112000 That means that all your nameservers are using the same data.

SUCCESS SOA (Start of Authority) record states that your master (primary) name server is: dnssrv01.uvlf.sk That server is listed at the parent servers, which is correct.

SUCCESS SOA serial number is: 2020112000 This appears to be in the recommended format of YYYYMMDDnn, where 'nn' is the revision. This number must be incremented every time you make a DNS change.

SUCCESS SOA Retry interval is : 7200 seconds. This seems OK. (Values about 3600-7200 seconds is good if not using DNS NOTIFY; RFC1912 2.2 recommends a value between 1200 to 43200 seconds (20 minutes to 12 hours)). This value determines how often secondary/slave nameservers check with the master for updates.

SUCCESS SOA Retry interval is : 3600 seconds. This seems OK. (Values about 120-7200 seconds is good). The retry value is the amount of time your secondary/slave nameservers will wait to contact the master nameserver again if the last attempt failed.

SUCCESS SOA Expire time is : 1209600 seconds. This seems OK. (Values 604800 to 2419200 seconds (1-4 weeks) is good). RFC1912 suggests 2-4 weeks. This is how long a secondary/slave nameserver will wait before considering its DNS data stale if it can't reach the primary nameserver.

SUCCESS SOA Expire time is : 86400 seconds. This seems OK. (about 300 to 86400 seconds or 5 min - 24 hours is good). RFC2308 suggests a value of 1-3 hours. This value used to determine the default (technically, minimum) TTL (time-to-live) for DNS entries, but now is used for negative caching.