Not to keep endlessly on this thread, but again with reference to good whois record keeping and bad.. 64.21.87.136: mx2.yvzus.com 64.21.87.141: mx3.xmabs.com 64.21.87.168: mx5.zgows.com 64.21.87.170: mx5.zntas.com <GOOD> We know the activity is probably limited to: Found a referral to whois.nac.net:43. NAC-Rwhoisd32 Server Ready - [hydrogen/43] Rwhoisd32 - 1.0.76 Private (NET-40155780-26) 1000 Elliott Ave W Seattle, WA 98119 US OrgID : NAC-40612 Netname : NET-40155780-26 Netblock: 64.21.87.128/26 NetUse : additional loopback ips for 66.246.252.57 Coordinator: Whitaker, Claude washwhitaker@aol.com Phone: 206-407-3201 67.229.101.206: hikmvo.leadingsolutionlinks.com 67.229.101.207: noqo.leadingsolutionlinks.com 67.229.101.208: rqecf.leadingsolutionlinks.com <GOOD> We know that the activity is probably limited to: VPLS Inc. d/b/a Krypt Technologies VPLSNET (NET-67-229-0-0-1) 67.229.0.0 - 67.229.255.255 Roy Diaz ROY (NET-67-229-96-0-1) 67.229.96.0 - 67.229.111.255 (Other than VPLS/Krypt seems to really like these type of customers) 70.97.119.58: mail1.ugallshwomange.com 70.97.119.59: mail1.ugouricarali.com 70.97.119.60: mail1.utanonesiana.com 70.97.119.61: mail1.vatetricarkose.com 70.97.119.62: mail1.venesiandsgu.com 70.97.119.63: mail1.viandslahass.com 70.97.119.64: mail1.vientianarica.com 70.97.119.65: mail1.vientuckyan.com <BAD> Integra Telecom, Inc. ELI-NETWORK-ELIX (NET-70-96-0-0-1) 70.96.0.0 - 70.99.255.255 Syptec ITCM-70-97-118-0-23 (NET-70-97-118-0-1) 70.97.118.0 - 70.97.119.255 This is a /23 but with Syptec's record... They sure like opening ranges to email marketers first :) Unless Syptec is operating those machines themselves.. but in that class C all the IP's don't appear to start on a normal boundary, .35-.65 with all the rest of the IP's having no reverse DNS. Does this client of theirs have control over the whole /23 or just a part? 205.251.11.130: loneas41.instantcasheasynow.com 205.251.11.163: lon69.instantcasheasynow.com 205.251.11.70: lon83.instantcasheasynow.com 205.251.7.144: click37.fallcreditcash.com 205.251.7.204: track42.fallcreditcash.com 205.251.7.253: click14.fallcreditcash.com 205.251.7.99: track4.fallcreditcash.com <BAD> InfoRelay Online Systems, Inc. INFORELAY-EST-02 (NET-205-251-0-0-1) 205.251.0.0 - 205.251.127.255 Reaction54 REACT54-03 (NET-205-251-8-0-1) 205.251.8.0 - 205.251.15.255 Is this two different clients on Reaction54, or is this Reaction54 themselves? I think you have to assume the later based on this whois information.. Especially when you see that the whole class C has the same naming patterns. 216.52.246.253: host6.chemistryearth.com 216.52.246.254: host6.consecutiveworld.com <GOOD> Internap Network Services Corporation PNAP-8-98 (NET-216-52-0-0-1) 216.52.0.0 - 216.52.255.255 Aurora Networking INAP-LAX-AURORA-34937 (NET-216-52-246-0-1) 216.52.246.0 - 216.52.246.255 More companies on Internap, but at least we know exactly what range is owned by this company.. We can just look at the one class 'C'. And of course we can see that this is quite typical right across the range.. 218.213.228.76: ad-a11.pointdnshere.com 218.213.228.92: ns193.pointdnshere.com <BAD> Ummm.. we can't say the same operator is using all of these can we? inetnum: 218.213.0.0 - 218.213.255.255 netname: HKNET-HK descr: HKNet Company Limited descr: 15/F, Tower 2, Ever Gain Plaza, descr: 88 Container Port Road, Kwai Chung, N.T. country: HK And if we guessed, and said the same behavior was across the board, we would be hurting the poor guy on that class C in the top of the range.. (Oh, yeah.. I know.. I threw that last example to show that this isn't just a North American problem) On November 26, 2009, Rich Kulawiec wrote:
On Wed, Nov 25, 2009 at 09:25:27AM -0800, Michael Peddemors wrote:
I here people saying that they don't publish whois information because they don't want the email's made public. Okay, at least the registered company name, or individual who presented the ID should be there.
Without delving too far into this: there is no point whatsoever in attempting to conceal or obfuscate email addresses --not any more. It is an obsolete, "cargo cult" practice that many are still engaged in without grasping that it was quite thoroughly defeated by spammers and their associates years ago.
That said, I concur in full with your opinions in re whois data and the need to assign it properly. I've long since stopped trying to deal with missing information and have adopted the rule that if the neighborhood looks sufficiently bad, I just block a /24 worth. That may sound arbitrary, but in practice it works extremely well.
---Rsk
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