DNS report for zone “infozent.net”
Hostmaster for zone infozent.net is: dnsmaster@bflysoft.comIP settings (as seen from ns.bflysoft.kr)
info
You have 2 nameservers.
info
You have nameservers in several C-Nets, that's good!
Mail settings (as seen from ns.bflysoft.kr)
warn
You have only 1 mailserver. Consider getting a backup one!
Zone as seen from “ns.bflysoft.com” [210.121.243.1]
error
ns.bflysoft.com is out of sync, it's running a version of the zone with serial 2008010517 when the newest one is 2008010610.
info
SOA serial seems to follow good standards. We recommend it to be in YYYYMMDDxx-format, which yours appear to be. This would suggest that your zone was last updated at 2008-01-05, and has been updated 18 times on that day.
info
This nameserver does not allow zone transfers.
error
Your nameserver supports recursion. This is really bad to have activated on public nameservers since they can then be used for amplification of Denial Of Service attacks! You can find more information about it here: http://www.us-cert.gov/reading_room/DNS-recursion033006.pdf
info
Your nameserver responds to queries via TCP.
info
Your nameserver responds authorative for the zone.
warn
SOA Refresh value of 600 is too low. RFC1912 suggests it should be between 1200 and 43200 seconds. This sets how often slaves should refresh the zone from the master.
info
Your SOA retry value of 10 minutes is good.
warn
A SOA expiry value of 259200 is too low. This value denotes for how long the zone is valid when the master is down. RFC1912 suggests it should be between 2 and 4 weeks.
Zone as seen from “ns.bflysoft.kr” [125.141.144.67]
info
ns.bflysoft.kr is running the latest version of the zone(2008010610).
info
SOA serial seems to follow good standards. We recommend it to be in YYYYMMDDxx-format, which yours appear to be. This would suggest that your zone was last updated at 2008-01-06, and has been updated 11 times on that day.
info
This nameserver does not allow zone transfers.
error
Your nameserver supports recursion. This is really bad to have activated on public nameservers since they can then be used for amplification of Denial Of Service attacks! You can find more information about it here: http://www.us-cert.gov/reading_room/DNS-recursion033006.pdf
info
Your nameserver responds to queries via TCP.
info
Your nameserver responds authorative for the zone.
warn
SOA Refresh value of 600 is too low. RFC1912 suggests it should be between 1200 and 43200 seconds. This sets how often slaves should refresh the zone from the master.
info
Your SOA retry value of 10 minutes is good.
warn
A SOA expiry value of 259200 is too low. This value denotes for how long the zone is valid when the master is down. RFC1912 suggests it should be between 2 and 4 weeks.
warn
A minimum TTL (Time To Live) of 120 is too low. RFC2308 recommends a minimum TTL between 1-3 hours.