DOCUMENT:Q154553 09-AUG-2001 [winnt] TITLE :Windows NT 4.0 DNS WINS Reverse Lookups Do Not Use WINS PRODUCT :Microsoft Windows NT PROD/VER:4.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= On a Windows NT 4.0 Domain Name System (DNS), Reverse WINS lookups are made through node status requests, not through WINS. MORE INFORMATION ================ Because the WINS database is not indexed by IP addresses, Windows NT 4.0 Domain Naming System (DNS) does not send a reverse name lookup to WINS to get the computer's name given its IP address. Instead, it sends a node status request directly to the given IP address NBT: NS: Query req. for *<00...(15)> and gets the NetBIOS name from the node status response: NBT: NS: Query (Node Status) resp. for *<00...(15)>, Success The DNS then appends the domain name to the NetBIOS name and returns the results to its clients. Additional query words: prodnt ntdns ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : 4.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.