| Parent | pass | NS records at parent servers | Your NS records at the parent servers are: ns2.or.com. [ 143.227.48.3 ] chimera.ns.sludge.net. [ 207.202.159.121 ] [These were obtained from c.gtld-servers.net.] |
| pass | Glue at parent nameservers | Parent nameservers (I checked with c.gtld-servers.net.) know A record for your domain, Very good ! | |
| NS | info | NS records at your nameservers | Your NS records at your nameservers are: ns1.or.com. [207.202.159.120 ] ns2.or.com. [143.227.48.3 ] |
| pass | Mismatched glue | OK. The DNS report did not detect any discrepancies between the glue provided by the parent servers and that provided by your authoritative DNS servers. | |
| pass | No NS A records at nameservers | OK. Your 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. | |
| pass | All nameservers report identical NS records | OK. The NS records at all your nameservers are identical. | |
| pass | All nameservers respond | OK. All of your nameservers listed at the parent nameservers responded. | |
| pass | Nameserver name validity | OK. All of the NS records that your nameservers report seem valid (no IPs or partial domain names). | |
| pass | Number of nameservers | OK. You have 2 nameservers. You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7. | |
| pass | Lame nameservers | OK. All the nameservers listed at the parent servers answer authoritatively for your domain. | |
| fail | Missing (stealth) nameservers | ERROR: stealth nameservers (nameservers what does not exist at root servers , but exist at your nameservers) ns1.or.com. at ns2.or.com. [143.227.48.3] ns1.or.com. at chimera.ns.sludge.net. [207.202.159.121] | |
| fail | Missing nameservers 2 | ERROR: missing nameservers (nameservers what exist at root servers , but does not exist at your nameservers) chimera.ns.sludge.net. missing at ns2.or.com. [143.227.48.3] chimera.ns.sludge.net. missing at chimera.ns.sludge.net. [207.202.159.121] | |
| pass | Nameservers on separate class C's | Your nameservers seems to be in different networks. | |
| pass | All NS IPs public | OK. All of your NS records appear to use public IPs. If there were any private IPs, they would not be reachable, causing DNS delays. | |
| SOA | info | SOA record | Your SOA record is: Primary nameserver: ns1.or.com. Hostmaster E-mail address: hostmaster.corp.or.com. Serial #: 2007081200 Refresh: 21600 Retry: 900 Expire: 3600000 Default TTL:900 |
| pass | NS agreement on SOA Serial # | OK. All your nameservers agree that your SOA serial number is 2007081200. That means that all your nameservers are using the same data. | |
| fail | SOA MNAME Check | ERROR: Your SOA (Start of Authority) record states that your master (primary) name server is: ns1.or.com. That server is not listed at the parent servers, which is not correct. | |
| pass | SOA Serial Number | OK. Your SOA serial number is: 2007081200. 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. | |
| pass | SOA REFRESH value | Your SOA REFRESH interval is : 21600 seconds. This seems normal (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. | |
| pass | SOA RETRY value | Your SOA RETRY interval is : 900 seconds. This seems normal (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. | |
| pass | SOA EXPIRE value | Your SOA EXPIRE time is : 3600000 seconds. This seems normal (about 1209600 to 2419200 seconds (2-4 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. | |
| pass | SOA MINIMUM TTL value | Your SOA MINIMUM TTL is : 900 seconds. This seems normal (about 3,600 to 86400 seconds or 1-24 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. | |