Scott I couldn't make head nor tails of all this info. Any ideas on what it all means?. It looks like the IANA is collecting info for unnamed parties who express specific interest in the pc broadcasting to them. (7. Source Specific Multicast Block (232/8) The Source Specific Multicast (SSM) is an extension of IP Multicast in which traffic is forwarded to receivers from only those multicast sources for which the receivers have explicitly expressed interest, and is primarily targeted at one-to-many (broadcast) applications. Note that this block as initially assigned to the VMTP transient groups [IANA].) Any ideas? George ----- Original Message ----- From: "Scott McNay" <Wizard@xxxxxxxx> To: "GCox" <pchelpers@xxxxxxxxxxxxx> Sent: Sunday, July 13, 2003 9:02 AM Subject: [pchelpers] Re: program phoning home? Hi! If you look over my previous message, you can see how I followed the trail. The first thing I did was find the domain name using nslookup 224.0.0.2. I could have done it with ping -a 224.0.0.2 also. The domain name looked rather generic, and the IP address looked odd, as I mentioned, which made me think about trying the tools at Sam Spade (which I already knew about) to get a more detailed report. The report from one of the tools on the site says "IANA special use", and "Please see RFC 3171 for additional information." I then used Google to look up RFC 3171: http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=RFC+3171&btnG=Google+Search, and the first link describes that group of IP addresses. Finally, looking through the last link I gave may help you identify what program is attempting to use that P address. Several of the pages mention IGMP, whatever that is. --Scott. Sunday, July 13, 2003, 10:52:28 AM, you wrote: SM> Hi! SM> Sunday, July 13, 2003, 1:44:34 PM, you wrote: G>> Can anyone tell me how to find out who belongs to the url 224.0.0.2? Windows G>> kernel core component tries to contact that site each time I go online. I G>> want to know who it's trying to reach and why. Thanks. SM> *********************** C:\>>nslookup 224.0.0.2 SM> ******************************* SM> Very odd-looking IP address. SM> Go to http://www.samspade.org if you want more. The next item is from SM> there: SM> http://www.samspade.org/t/whois?a=224.0.0.2&server=magic ... SM> RFC 3171 is: IANA Guidelines for IPv4 Multicast Address Assignments SM> http://www.faqs.org/rfcs/rfc3171.html ... SM> 224.0.0.2 turns out to be part of "Local Network Control Block", which SM> is described as: ... SM> For more information, look through http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=%22224.0.0.2%22 --Scott. Regards, John Durham (list moderator) <http://modecideas.com/contact.html?sig> Freelists login at //www.freelists.org/cgi-bin/lsg2.cgi List archives at //www.freelists.org/archives/pchelpers PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Good advice is like good paint- it only works if applied. Regards, John Durham (list moderator) <http://modecideas.com/contact.html?sig> Freelists login at //www.freelists.org/cgi-bin/lsg2.cgi List archives at //www.freelists.org/archives/pchelpers PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Good advice is like good paint- it only works if applied.