North American Network Operators Group

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ISPs Blocking Private Addresses?

  • From: Peter Ford
  • Date: Sun Feb 08 17:25:01 1998

Do most ISPs explicitly block private IP addresses (e.g. 10.X.X.X) at their
borders?

Do the "default-less" ISPs filter private addresses or do they let
routing/forwarding do the work?

thanks, peter