I just posted TATA as a single example. This route is missing from multiple networks. I could not find the specific /24 on, Sprint(1239) AT&T(7018) and Centurylink either. rviews@route-server.ip.att.net> show route 194.71.107.0/24 rviews@route-server.ip.att.net> from https://www.sprint.net/lg/lg_start.php Query Results: Sprint Source Region: New York, NY (sl-gw27-nyc) Performing: Show Route % Network not in table Completed - Wed Nov 26 21:11:51 EST 2014 Basic troubleshooting of your two example ASN's. Notice the community 174:991 on the Cogent path? Go look that up in Cogent's community guide. Level3's looking glass actually does the translation of communities for you. I'm not going to try to map out all the possible paths this prefix could be reach. At the moment, the /24 is not reachable from several networks. Either an outage or a change at AS51040 or their upstreams has caused the traffic engineering of one of the networks upstream of 51040 to break connectivity for a group of networks. from http://www.cogentco.com/en/network/looking-glass BGP routing table entry for 194.71.107.0/24, version 2977032097 Paths: (1 available, best #1, table Default-IP-Routing-Table) 5580 39138 22351 2.207 51040 38.104.73.58 (metric 10111041) from 154.54.66.76 (154.54.66.76) Origin IGP, metric 0, localpref 130, valid, internal, best Community: 174:991 174:10004 174:20999 174:21001 174:22013 Originator: 66.28.1.248, Cluster list: 154.54.66.76, 66.28.1.69, 66.28.1.103, 66.28.1.9, 154.54.66.49 Route results for 194.71.107.0/24 from Atlanta, GA BGP routing table entry for 194.71.107.0/24 Paths: (2 available, best #1) 5580 39138 22351 23456 51040 AS-path translation: { ATRATO-IP OPENAP-WIRELESS-NETWORKS-AS INTELSAT AS23456 PIRATE-AS } ear1.Atlanta2 (metric 20000) Origin IGP, metric 0, localpref 100, valid, internal, best Community: North_America Lclprf_100 Level3_Customer United_States Atlanta Level3:10074 5580:25215 Suppress_to_Peers Originator: ear1.Atlanta2 5580 39138 22351 23456 51040 AS-path translation: { ATRATO-IP OPENAP-WIRELESS-NETWORKS-AS INTELSAT AS23456 PIRATE-AS } ear1.Atlanta2 (metric 20000) Origin IGP, metric 0, localpref 100, valid, internal Community: North_America Lclprf_100 Level3_Customer United_States Atlanta Level3:10074 5580:25215 Suppress_to_Peers Originator: ear1.Atlanta2 On Nov 26, 2014, at 7:32 PM, Eric Tykwinski wrote:

Courtney,

No offense, and I can’t really verify Comcast’s network. But Verizon peers with the same ASNs I do 3356 and 174 which both have routes to thepiratebay’s prefixes, and I can almost guarantee that Comcast has those routes within your network. What’s up really? Just because TATA is blocking routes shouldn’t effect the whole internet, or this whole thing would have been screwed a long time ago.

Sincerely,

Eric Tykwinski TrueNet, Inc. P: 610-429-8300 F: 610-429-3222

...

On Nov 26, 2014, at 2:11 PM, courtneysmith@comcast.net wrote:

Only one of their /24's is in TATA's(AS6453) table.

http://bgp.he.net/AS51040#_prefixes

http://lg.as6453.net

Router: gin-aeq-tcore1 Site: US, Ashburn, AEQ Command: show route protocol bgp 194.71.107.0/24 terse exact

{master}

Router: gin-aeq-tcore1 Site: US, Ashburn, AEQ Command: show route protocol bgp 194.14.56.0/24 terse exact

inet.0: 520187 destinations, 3597636 routes (519993 active, 9 holddown, 1053 hidden) Restart Complete + = Active Route, - = Last Active, * = Both

A V Destination P Prf Metric 1 Metric 2 Next hop AS path * ? 194.14.56.0/24 B 197595 51040 I unverified >216.6.87.1 ? B 197595 51040 I unverified >216.6.87.1 ? B 197595 51040 I unverified >216.6.87.1 ? B 1239 1257 197595 51040 I unverified >144.232.7.61

{master}

On 11/26/14, 2:01 PM, " eric-list@truenet.com " < eric-list@truenet.com > wrote:

Javier,

I can't get to www.rrbone.net, an upstream provider to the IP I was given for thepiratebay.se. I tested on VZ FiOS and Wireless in Philadelphia area and both die within the VZ network.

For Comcast, it looks like the space isn't showing up in the BGP table: route-server.newyork.ny.ibone>show ip bgp 194.71.107.27 % Network not in table

No clue what the cause is, but it bigger than just the PirateBay.

Sincerely,

Eric Tykwinski TrueNet, Inc. P: 610-429-8300 F: 610-429-3222

-----Original Message----- From: NANOG [ mailto:nanog-bounces@nanog.org ] On Behalf Of Javier J Sent: Wednesday, November 26, 2014 1:44 PM To: nanog@nanog.org Subject: Re: Anyone else having trouble reaching thepiratebay.se? AS39138

I confirmed It is also blocked for Comcast users. Even Comcast business users. This is starting to look like censorship to me.

Courtney Smith courtneysmith@comcast.net I wanna devise a virus To bring dire straits to your environment Crush your corporations with a mild touch Trash your whole computer system and revert you to papyrus