On Fri, 28 Mar 2008 at 13:40 +0100, [EMAIL PROTECTED] confabulated: > Hi, > >> Hi my servers are getting spam from the ip's below (rbl's are not >> catching them) how can I block the whole ip ranges that these ip's >> belong to ? How do I figure out the netmask / Mask Bits .. All the >> calculators I have found so far only work for class A,B and C networks .. > > you can use simply "whois" > > #whois 67.205.81.186 > > returns: > > Groupe iWeb Technologies inc. IWEBGROUP (NET-67-205-64-0-1) > 67.205.64.0 - 67.205.95.255 > K T Tran BODHOST-COM-CL-T039-480CN (NET-67-205-81-184-1) > 67.205.81.184 - 67.205.81.191 > > # ARIN WHOIS database, last updated 2008-03-27 19:10 > # Enter ? for additional hints on searching ARIN's WHOIS database. > > so use a calculator to find that it's 67.205.81.184/29
You can also find that out without a calculator by looking at the net name: %whois -a NET-67-205-81-184-1 ... NetRange: 67.205.81.184 - 67.205.81.191 CIDR: 67.205.81.184/29 ... -d -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
