Differences

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--- who_is_using_this_ip_address [2014/02/09 00:24] – samer
+++ who_is_using_this_ip_address [2014/02/09 12:47] – [2- Using BGP Information] samer
@@ Line 45: / Line 45: @@
 	      Community: 15290:3356 15290:64995 15290:65050 15290:65506
-Despite its availability, this method remains cumbersome, especially if you want to quickly look up something or if you have a large number of prefixes that you want to analyse with a script. Fortunately, RIPE NCC and Team Cymru have already answered these questions: they provide solutions that combine the versatility of the whois protocol with the accuracy of the BGP information. In other words, you keep on using the legacy whois command but you get BGP-based results. Let us examine these solutions:
+Despite its availability, this method remains cumbersome, especially if you want to quickly look up something or if you have a large number of prefixes that you want to analyse with a script. Fortunately, RIPE NCC and Team Cymru have already answered these questions: they provide solutions that combine the versatility of the whois protocol with the accuracy of the BGP information. In other words, you keep on using the legacy whois command but you get BGP-based results.
 ==== -- Team Cymru whois Server ====
@@ Line 89: / Line 89: @@
 <WRAP round important>
-Note RRCs may receive different information for the same IP prefix.
+Due to BGP policies between ASes in the Internet, RRCs may receive different BGP information for the same IP prefix. Therefore, Riswhois provides multiple matchings for the IP prefix, as in the following example. In such cases, a longest prefix matching may help in choosing a single originating AS.
-that Riswhois may provide multiple matchings for IP addresses. In such case, RRCs
 </WRAP>