[AusNOG] Twitter Routing

[Chris - Pike IT Services]

Thanks for the info so far everyone. 

Based on some more research, the routing I would have expected is telstra.net > telstraglobal.net > level3.net > twttr.com

A traceroute to the Level3 peering point with Twitter routes direct to USA from my connection:

5  14ms   22ms   22ms   bundle-ether15.ken43.sydney.telstra.net [110.142.193.141]
 6  18ms   22ms   22ms   bundle-ether9.ken-core4.sydney.telstra.net [203.50.11.30]
 7  16ms   16ms   15ms   bundle-ether1.pad-gw2.sydney.telstra.net [203.50.6.29]
 8  31ms   13ms   13ms   tengige10-0-0.sydp-core02.sydney.reach.com [203.50.13.94]
 9  150ms  150ms  150ms  i-0-3-0-0.paix-core01.bx.telstraglobal.net [202.84.140.9]
10  185ms  185ms  185ms  i-0-5-1-0.sydp-core05.bx.telstraglobal.net [202.84.140.30]
11  183ms  183ms  184ms  i-3-2.eqnx02.bi.telstraglobal.net [202.84.251.42]
12  151ms  176ms  151ms  l3-peer.eqnx02.pr.telstraglobal.net [134.159.62.198]
13  200ms  200ms  200ms  ae-43-90.car3.sanjose1.level3.net [4.69.152.197]
14  223ms  222ms  221ms  twitter-inc.car3.sanjose1.level3.net [4.71.113.194]

I got the last hop from using the Level3 LG as it was the last hop before the twttr.com network.

1 ae-43-90.car3.SanJose1.Level3.net (4.69.152.197) 0 msec
    ae-13-60.car3.SanJose1.Level3.net (4.69.152.5) 0 msec
    ae-23-70.car3.SanJose1.Level3.net (4.69.152.69) 0 msec
  2 TWITTER-INC.car3.SanJose1.Level3.net (4.71.113.194) 0 msec 0 msec 0 msec
  3 xe-0-0-0.smf1-er1.twttr.com (199.16.159.37) [AS13414 {FIRSTNET-NETWORK}] 4 msec 0 msec
    ae50.smf1-er2.twttr.com (199.16.159.53) [AS13414 {FIRSTNET-NETWORK}] 4 msec
  4 r-199-59-148-82.twttr.com (199.59.148.82) [AS13414 {FIRSTNET-NETWORK}] 4 msec 4 msec 8 msec

Regards,

Chris Pike
Pike IT Services

Mobile: +61 458 068 854 
Web: www.pikeitservices.com.au