ARIN's new whois -- Coming Improvements to ARIN's Whois DirectoryService

michael.dillon at michael.dillon at
Fri Jun 4 17:12:56 CEST 2010

I don't know how widely ARIN distributes these notices, but for anyone
interested in improving the whois system, there are a couple of URLs
here where you can try ARIN's new whois and read some documentation
about it. It would be interesting for RIPE labs to deploy a trial whois
server that matches the ARIN spec to see if WHOIS-RWS is easily
adaptable outside of ARIN or not.

-----Original Message-----
From: arin-announce-bounces at
[mailto:arin-announce-bounces at] On Behalf Of Member Services
Sent: 04 June 2010 16:05
To: arin-announce at
Subject: [arin-announce] Coming Improvements to ARIN's Whois

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 (

A demo of this service has been available since October 2009. The 
demonstration service will be available at 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:

More detailed information on these changes and other future features 
that may impact the community at ARIN is available at:


Mark Kosters
Chief Technical Officer
American Registry for Internet Numbers (ARIN)


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