DNS Tools - Advanced Description

VIDEO >> See these tools in action! - look for this symbol:

• Watch a demonstration video (flash) of the Authoritative DNS Serial Check tool.
• Authoritative DNS Serial Check takes a domain name and finds the authoritative name servers (primary and secondary), then it queries each name server for the current serial number for the zone defining the domain, then it presents and analyzes the results.
  
  [Start Query]
  Authoritative DNS Serial Check
  Starting Timestamp: 01/21/09 11:59:14
  Query: nwpsw.com
  
  NS: ns100.apollohosting.com -- Serial: 2009010901
  NS: ns101.apollohosting.com -- Serial: 2009010901
  
  Analysis: All serial numbers are identical, no problems detected.
  
  [End Query]
   
• Watch a demonstration video (flash) of the DNS Software Version tool.
• DNS Software Version retrieves the software version of the subject DNS. Some DNS will not respond to this query for security reasons.
  
  [Start Query]
  DNS Software Version and Authors
  Starting Timestamp: 01/21/09 11:57:33
  Subject DNS: ns1.sampledomainsomewhere.net
  
  DNS Version: 9.4.2-P2
  DNS Author: Bob Halley
  DNS Author: David Lawrence
  DNS Author: Danny Mayer
  DNS Author: Damien Neil
  DNS Author: Matt Nelson
  DNS Author: Michael Sawyer
  DNS Author: Brian Wellington
  DNS Author: Mark Andrews
  DNS Author: James Brister
  DNS Author: Ben Cottrell
  DNS Author: Michael Graff
  DNS Author: Andreas Gustafsson
  
  [End Query]
   
• Watch a demonstration video (flash) of the DNS Verify tool.
• DNS Verify takes an IP address and does a reverse lookup on it to find the hostname. Then it takes the hostname and translates it back to an IP address. If the IP addresses match, the DNS records verified. There is a batch version of this tool included as part of the HyperTrans tool.
  
  [Start Query]
  DNS Verification
  Starting Timestamp: 01/21/09 11:51:02
  Source DNS: 208.200.248.8
  
  Requesting PTR record for 192.220.125.33
  
  PTR Record: ns2.czarnecki.de
  
  Requesting A record for ns2.czarnecki.de
  
  A Record: 217.115.140.125
  
  Analysis: IP to Hostname to IP DNS Verification FAILED: Starting and ending IPs are different.
  [End Query]
   
• Watch a demonstration video (flash) of the IP Drilldown tool.
• IP Drilldown is a tool for determining all the responsible name servers (and also the company names) of an IPv4 address. It uses the selected DNS to query in ARPA namespace for each class D, C, B and A.
  
  
   
• Watch a demonstration video (flash) of the ENUM tool.
• ENUM. This feature in Name Server Lookup accepts a fully qualified telephone number beginning with the country code and returns any records maintained by the end user in the ENUM registry in the public domain e164.arpa (or any other root you choose).
   

  Example (parts of this query have been altered to protect the privacy of the phone number owner. The phone number is fictitious.)

  [Start Queries]
  Processing Telephone Number [+420596987654]

  [Query in ENUM NAPTR namespace for 4.5.6.7.8.9.6.9.5.0.2.4.e164.arpa]

  Server:  unknown_server_name
  Address:  208.200.248.1

  Non-authoritative answer:
  4.5.6.7.8.9.6.9.5.0.2.4.e164.arpa                NAPTR        order = 200, preference = 50
         flags = "u"
         services = "E2U+h323"
         rule = "!^\+(.*)$!h323:\1@xyzext.samplecompany.cz!"
         replacement = (root)

  4.5.6.7.8.9.6.9.5.0.2.4.e164.arpa                NAPTR        order = 100, preference = 50
         flags = "u"
         services = "E2U+sip"
         rule = "!^\+(.*)$!sip:\samplecompany.cz!"
         replacement = (root)

  Authoritative answers can be found from:
  8.9.6.9.5.0.2.4.e164.arpa                NS          nameserver = ns.samplecompany.cz
  8.9.6.9.5.0.2.4.e164.arpa                NS          nameserver = ns.samplecompany.net
  ns.samplecompany.net                A           internet (IPv4) address = 255.254.253.233

  [End Query]
   

• Watch a demonstration video (flash) of the SPF/Domain Keys tool.
• SPF/Domain Keys takes a domain name requests the SPF records and Domain Keys records (if available).
  
  [Start Query]
  SPF/Domain Keys
  Starting Timestamp: 12/19/08 13:46:46
  Source DNS: 208.200.248.8
  Target: blzservices.com
  
  Requesting SPF TXT record.
  SPF (TXT) Record: v=spf1 mx ip4:209.198.126.120/29 -all
  
  Requesting SPF resource record (RFC4408).
  No SPF resource record available.
  
  Requesting _domainkey.blzservices.com TXT record.
  DomainKey Record: t=y;o=-; r=support[at symbol removed]blzservices.com
  
  [End Query]
   
• Setup. This is used to define the many types of NSLOOKUP or DIG record queries you will be making. It also controls filtering on Zone Transfers (List Domain). Specify the name server you will be using here.
   
  

Windows Vista compatibility: Fully functional as of v10.42.

Screenshot of the Tool