DNS report for zone “grandchallenges.net”
Hostmaster for zone grandchallenges.net is: hostmaster@dmz.gatesfoundation.orgIP settings (as seen from ns2.gatesfoundation.org)
info
You have 4 nameservers.
info
You have nameservers in several C-Nets, that's good!
Mail settings (as seen from ns2.gatesfoundation.org)
warn
You don't have any mailservers set up. This is OK if you don't use any mail for the domain.
Zone as seen from “dmednsaaa01.gatesfoundation.org” [65.175.51.101]
info
dmednsaaa01.gatesfoundation.org is running the latest version of the zone(19).
warn
We recommend that you keep your SOA in YYYYMMDDxx-format.
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 900 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 86400 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 86400 is quite high. RFC2308 recommends a minimum TTL between 1-3 hours.
Zone as seen from “dmednsaaa02.gatesfoundation.org” [65.175.51.102]
info
dmednsaaa02.gatesfoundation.org is running the latest version of the zone(19).
warn
We recommend that you keep your SOA in YYYYMMDDxx-format.
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 900 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 86400 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 86400 is quite high. RFC2308 recommends a minimum TTL between 1-3 hours.
Zone as seen from “ns1.gatesfoundation.org” [65.117.201.99]
info
ns1.gatesfoundation.org is running the latest version of the zone(19).
warn
We recommend that you keep your SOA in YYYYMMDDxx-format.
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
warn
Your nameserver doesn't respond to queries via TCP.
info
Your nameserver responds authorative for the zone.
warn
SOA Refresh value of 900 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 86400 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 86400 is quite high. RFC2308 recommends a minimum TTL between 1-3 hours.
Zone as seen from “ns2.gatesfoundation.org” [65.117.201.98]
info
ns2.gatesfoundation.org is running the latest version of the zone(19).
warn
We recommend that you keep your SOA in YYYYMMDDxx-format.
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
warn
Your nameserver doesn't respond to queries via TCP.
info
Your nameserver responds authorative for the zone.
warn
SOA Refresh value of 900 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 86400 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 86400 is quite high. RFC2308 recommends a minimum TTL between 1-3 hours.