Just noticed a very large increase of activity from comcast, it could be that they have changed naming conventions (PTR) records on their dynamic space, or that they are not doing egress filtering on network..

Maybe though information on this naming convention, and what it represents would be helpful..

174.163.8.198                3   m001dd418f0d3.sjos3.ca.comcast.net
   174.163.8.254             2   m001dcf9dec93.sjos3.ca.comcast.net
174.163.9.17                 4   m001dd4e25403.sjos3.ca.comcast.net
   174.163.9.104             3   mf8eda5737323.sjos3.ca.comcast.net
   174.163.9.250             1   m001dcfc80f43.sjos3.ca.comcast.net
174.163.10.102               5   m0CF89339CB63.sjos3.ca.comcast.net
174.163.24.23                2   m40700911a183.sjos7.ca.comcast.net
   174.163.24.42             4   m00ace0368ce3.sjos7.ca.comcast.net
   174.163.24.137            2   m001DCFA52673.sjos2.ca.comcast.net
   174.163.24.226            3   m5c571a19b2b3.sjos7.ca.comcast.net
   174.163.24.232            4   me83efcfe8dc3.sjos7.ca.comcast.net
174.163.25.186               2   me83efca948c3.sjos2.ca.comcast.net
174.163.26.55                1   m0cf893166e93.sjos7.ca.comcast.net
   174.163.26.170            3   me8892c3841b3.sjos7.ca.comcast.net
174.163.66.19                3   mbccab5b12b23.snjs.ca.comcast.net
174.163.67.167               5   m78719C46DEB3.sjos4.ca.comcast.net
   174.163.67.182            2   me83efc6c48b3.sjos4.ca.comcast.net
174.174.176.107              3   m00ace0e8d123.sjos7.ca.comcast.net
   174.174.176.154           4   mbccab5e2dd63.sjos7.ca.comcast.net
174.174.177.105              1   me83efc094bb3.sjos7.ca.comcast.net
   174.174.177.185           3   me83efc6f40c3.sjos7.ca.comcast.net
   174.174.177.233           2   mC83FB4879D03.sjos7.ca.comcast.net
174.174.179.42               2   m001dd2c8e1b3.sjos7.ca.comcast.net
   174.174.179.138           9   m001dd4848f03.sjos7.ca.comcast.net
174.174.180.62               4   mcca462ce7823.sjos7.ca.comcast.net
   174.174.180.121           3   m207355FD78F3.sjos7.ca.comcast.net
174.174.181.59               1   m0cf8931fe353.sjos7.ca.comcast.net
   174.174.181.123           4   me8892c199f03.sjos7.ca.comcast.net
   174.174.181.130           1   m90c7924f68b3.sjos7.ca.comcast.net
174.174.184.132              2   m001dd1801df3.sjos7.ca.comcast.net
174.174.185.78               2   m8c09f4689543.sjos7.ca.comcast.net
174.174.186.14               1   m14abf0944d03.sjos7.ca.comcast.net
   174.174.186.68            3   me8892c550dc3.sjos7.ca.comcast.net
   174.174.186.128           2   m901aca411fa3.sjos7.ca.comcast.net
   174.174.186.133           3   m900dcb29f123.sjos7.ca.comcast.net
174.174.187.61               3   m00ace0ea26a3.sjos7.ca.comcast.net
174.174.222.8                2   m0cf893fd46b3.sjos7.ca.comcast.net
   174.174.222.9             3   m0cf8934913d3.sjos7.ca.comcast.net
   174.174.222.181           2   m900dcbff9cf3.sjos7.ca.comcast.net
174.188.225.3                1   m5c571ad75b13.sjos4.ca.comcast.net
184.118.252.9                2   m001dd4e3a8b3.sjos9.ca.comcast.net
   184.118.252.61            3   me8892c6fa2f3.sjos9.ca.comcast.net
184.118.253.127              3   m207355086443.sjos4.ca.comcast.net
   184.118.253.161           2   m001dd5718f53.sjos4.ca.comcast.net

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