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Home > Success Center > User Device Tracker (UDT) > UDT - Knowledgebase Articles > Host names not showing for endpoints

Host names not showing for endpoints

Created by Eric Bryant, last modified by Nigel on Sep 05, 2018

Views: 2,378 Votes: 1 Revisions: 8



UDT gets a hostname for an endpoint using reverse DNS lookups on the IP address. 


All UDT versions


  1. Log onto the Orion server, and perform a nslookup of that IP address to see if you get back the correct hostname.
  2. If you are unable to resolve the hostname via nslookup on the Orion server, check the DNS server and see if has both A and PTR records set up.
  3. The IP <-> MAC address mapping is pulled from the ARP cache of L3 devices. If you are having trouble discovering the IP address, use the UDT compatibility checker to troubleshoot the L3 device.
  4. If there are multiple DNS servers configured for the UDT host server, insure the one with the records is the primary DNS being accessed. UDT will only access the primary DNS for the records.
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