backbones filtering unsanctioned sites

Jean-Francois Mezei jfmezei_nanog at
Mon Feb 13 21:53:53 UTC 2017

Cogent seems to have been very very silent on the issue.

Could this be because they got some police/NSA/FBI letter requiring
confindentiality and requiring Cogent to snoop on all traffic to , and along with agreeing to comply, blocked all the
requested traffic which means that their cooperation yield logs of what
IP has made a SYN to but since that SYN went nowhere,
contains no other information, so the agency gets its logs as requested,
but with no actionable information in them ?

That would explain the block AND Cogent being coy/silent on issue.

This could be a "protect users" move even though on the surface Cogent
appears to be the bad guy.

The other question is whether other major backbone providers got the
same order and complied without telling ayone nor taking any action to

In my case, the ISP I used has local peering with Cloudfare, so not
affected. Not sure what percentage of users have local transit-free

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