2620:108:700f::36f4:7ea4 and 205.251.244.235 are both Amazon IPs.
Netflix uses a lot of EC2 stuff, so you’re not necessarily hitting their 
“cache” when you pull up their website.


> On May 18, 2016, at 4:45 PM, Sterling Jacobson <[email protected]> wrote:
> 
> Very inaccurate too.
> 
> I get 160Mbps results on a 10Gbps connection.
> 
> This is with a path to Netflix that pretty much sits in LA.
> So I am assuming I hit their CDN in LA all the time.
> Not sure where their speed test web app is located.
> 
> IPv6
> 
> C:\Users\Sterling>tracert netflix.com <http://netflix.com/>
> 
> Tracing route to netflix.com <http://netflix.com/> [2620:108:700f::36f4:7ea4]
> over a maximum of 30 hops:
> 
>   1    <1 ms    <1 ms    <1 ms  2606:cb80:2:2::1
>   2    <1 ms    <1 ms    <1 ms  2604:ba00:1:22::1
>   3    18 ms    22 ms    22 ms  he.net.slix.net <http://he.net.slix.net/> 
> [2607:fa18:1:f00::15]
>   4    18 ms    18 ms    19 ms  10ge1-1.core1.las1.he.net 
> <http://10ge1-1.core1.las1.he.net/> [2001:470:0:27d::1]
>   5    23 ms    23 ms    24 ms  10ge1-14.core1.lax2.he.net 
> <http://10ge1-14.core1.lax2.he.net/> [2001:470:0:27e::1]
>   6    18 ms    21 ms    24 ms  100ge2-1.core1.lax1.he.net 
> <http://100ge2-1.core1.lax1.he.net/> [2001:470:0:72::1]
>   7    16 ms    16 ms    16 ms  
> asn-qwest-us-as209.10gigabitethernet5-5.core1.lax1.he.net 
> <http://5.core1.lax1.he.net/> [2001:470:0:2c0::2]
>   8    26 ms    26 ms    26 ms  2001:428::205:171:3:199
>   9    23 ms    24 ms    25 ms  2001:428:7000:10:0:16:0:2
> 10     *        *        *     Request timed out.
> 11    42 ms    42 ms    43 ms  2620:107:3000::e
> 12    42 ms    42 ms    43 ms  2620:108:7000::6
> 13    42 ms    42 ms    43 ms  2620:108:7000::7
> 14    42 ms    42 ms    42 ms  2620:108:7000::1
> 15     *        *        *     Request timed out.
> 16     *        *        *     Request timed out.
> 17     *        *        *     Request timed out.
> 18     *       42 ms    42 ms  2620:108:700f::36f4:7ea4
> 
> IPv4
> 
> C:\Users\Sterling>tracert -4 netflix.com <http://netflix.com/>
> 
> Tracing route to netflix.com <http://netflix.com/> [54.225.192.83]
> over a maximum of 30 hops:
> 
>   1    <1 ms    <1 ms    <1 ms  108-165-31-1.avative.net 
> <http://108-165-31-1.avative.net/> [108.165.31.1]
>   2    <1 ms    <1 ms    <1 ms  tg1-8--200.br01.lsan.acedc.net 
> <http://200.br01.lsan.acedc.net/> [69.27.173.37]
>   3     4 ms     4 ms     5 ms  208.186.235.162
>   4    33 ms    33 ms    34 ms  be-1.br02.chcgildt.integra.net 
> <http://be-1.br02.chcgildt.integra.net/> [209.63.82.186]
>   5    32 ms    32 ms    32 ms  equinix01-chi2.amazon.com 
> <http://equinix01-chi2.amazon.com/> [206.223.119.98]
>   6    38 ms    42 ms    42 ms  52.95.62.36
>   7    32 ms    32 ms    32 ms  52.95.62.49
>   8    52 ms    52 ms    52 ms  54.239.42.63
>   9    52 ms    52 ms    52 ms  54.239.42.69
> 10     *        *        *     Request timed out.
> 11     *        *        *     Request timed out.
> 12    54 ms    61 ms    67 ms  54.239.110.249
> 13    53 ms    53 ms    53 ms  54.239.111.105
> 14    53 ms    58 ms    55 ms  205.251.244.235
> 
> 
> 
> From: Af [mailto:[email protected] <mailto:[email protected]>] On 
> Behalf Of Eric Kuhnke
> Sent: Wednesday, May 18, 2016 4:33 PM
> To: [email protected] <mailto:[email protected]>
> Subject: Re: [AFMUG] fast.com <http://fast.com/> utility
> 
> further discussion: https://news.ycombinator.com/item?id=11722775 
> <https://news.ycombinator.com/item?id=11722775>
> This could be useful from a residential last mile customer point of view, to 
> expose ISPs which have good peering/low congestion tospeedtest.net 
> <http://speedtest.net/> but might have less than optimal routing to Netflix. 
> Or an ISP that is flat topping the traffic charts on an N x 10GbE link to 
> netflix somewhere in the intermediate path.
> 
> Some people will see radically different results from speetest vs this new 
> Netflix test during peak evening hours.
> 
> On Wed, May 18, 2016 at 3:24 PM, Nate Burke <[email protected] 
> <mailto:[email protected]>> wrote:
> Just came across this https://fast.com <https://fast.com/>.  Utility from 
> netflix. Torching it looks like it opens 3 HTTPS connections to 3 different 
> IP Addresses to run the test.  Only reports download speed, no Latency or 
> Upload.

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