Bizarre Internet Routing.

[scotttswan]

anyone else getting bizarre internet routing?

some sites are loading normally whilst others like facebook are being routed through Singapore.

tracert www.facebook.com

Tracing route to www.c10r.facebook.com [31.13.79.20]
over a maximum of 30 hops:

1 * * * Request timed out.
2 10 ms 9 ms 10 ms cpe-200-115-195-21.telecentro-reversos.com.ar [2
00.115.195.21]
3 158 ms 264 ms 72 ms xe-0-1-0.ar3.eze1.gblx.net [208.178.195.209]
4 32 ms 49 ms 32 ms xe-0-1-0.ar3.eze1.gblx.net [208.178.195.209]
5 137 ms 140 ms 143 ms po2-30G.ar2.MIA2.gblx.net [67.17.106.162]
6 133 ms 130 ms 133 ms xe-0-2-0-2.r05.miamfl02.us.bb.gin.ntt.net [129.2
50.9.117]
7 * * 139 ms ae-4.r21.miamfl02.us.bb.gin.ntt.net [129.250.3.1
72]
8 182 ms * 191 ms ae-7.r20.dllstx09.us.bb.gin.ntt.net [129.250.3.1
74]
9 164 ms * 162 ms ae-0.r21.dllstx09.us.bb.gin.ntt.net [129.250.2.5
9]
10 212 ms * 212 ms ae-4.r21.snjsca04.us.bb.gin.ntt.net [129.250.4.2
5]
11 214 ms 218 ms * ae-0.r20.snjsca04.us.bb.gin.ntt.net [129.250.2.9
6]
12 400 ms 392 ms 399 ms as-6.r20.sngpsi02.sg.bb.gin.ntt.net [129.250.3.8
9]
13 416 ms 409 ms 415 ms ae-1.r00.sngpsi02.sg.bb.gin.ntt.net [129.250.4.1
43]
14 389 ms * 577 ms 116.51.26.114
15 415 ms 409 ms 420 ms po126.msw01.04.sin1.tfbnw.net [31.13.25.67]
16 412 ms 404 ms 410 ms www-01-04-sin1.facebook.com [31.13.79.20]

Trace complete.

So i'm sent to the us who somehow decide i want to access the Singapore mirror of facebook..

 

[zug]

Routing to facebook.com is normal (via Miami) for me on Telecentro (I also tried the specific server you hit, same thing).

 

[AlexanderB]

Are you sure this isn't just Facebook's geolocation-based CDN screwing you over, e.g. assuming that you're coming from the ASEAN region? Or, put another way, are you seeing this routing from sites other than Facebook?

As with most top 10-size sites, Facebook has its own CDN and geoIP-based algorithms for determining which CDN node to give you, and in fact, how www.facebook.com will resolve for you DNS-wise. For instance, here in Armenia:


sasha@higuera:~$ host www.facebook.com
www.facebook.com is an alias for star.facebook.com.
star.facebook.com has address 69.171.228.72
star.facebook.com has IPv6 address 2a03:2880:10:8f02:face:b00c:0:27


sasha@higuera:~$ host 69.171.228.72
72.228.171.69.in-addr.arpa domain name pointer star-slb-10-05-prn1.facebook.com.

That one actually happens to be at home base in San Jose. However, from one of my Atlanta-based servers:


sasha@adagio:~$ host www.facebook.com
www.facebook.com is an alias for star.facebook.com.
star.facebook.com has address 173.252.110.20
star.facebook.com has IPv6 address 2a03:2880:2110:df01:face:b00c:0:4

 

[AlexanderB]

In fact, given that you appear to be going through San Jose ([background=rgb(252, 252, 252)]ae-0.r20.snjsca04.us.bb.gin.ntt.ne), it seems to me this is definitely Facebook itself screwing you up.[/background]