Hi This was posted on arin-announce this morning as many of you may be interested: ARIN is pleased to announce that it plans to deploy an improved Whois service called Whois-RWS on 26 June 2010. Included in the deployment are the following services that provide the general public with access to ARIN's registration data. * a RESTful Web Service (RWS) * a NICNAME/WHOIS port 43 service * a user-friendly web site (http://whois.arin.net) A demo of this service has been available since October 2009. The demonstration service will be available at http://whoisrws-demo.arin.net until the production service is deployed on 26 June 2010. When using Whois-RWS you will notice some differences in behavior for certain queries and corresponding result sets on the NICNAME/WHOIS port 43 service. ARIN will make a separate announcement on 11 June when it publishes detailed documentation on these differences along with the demonstration service update. ARIN continues to welcome community participation on the Whois-RWS mailing list, and we invite you to subscribe and share your thoughts and suggestions at: http://lists.arin.net/mailman/listinfo/arin-whoisrws More detailed information on these changes and other future features that may impact the community at ARIN is available at: https://www.arin.net/features/ Regards, Mark Kosters Chief Technical Officer American Registry for Internet Numbers (ARIN)