[ldng]

AS36040 (YOUTUBE), AS43515 (YOUTUBE), AS15169 (GOOGLE), AS54113 (FASTLY), AS36459 (GITHUB), AS16509 (AMAZON-02), AS14618 (AMAZON-AES), AS16509 (AMAZON-02), AS38895 (AMAZON-AS-AP) and so on.

Could someone tell me more about those network codes ?

Where do they come from ? Specifics to Google or following some standard ?

[gtrubetskoy]

AS numbers is part of the BGP protocol, when you are a large organization with multiple presence points on the internet you need to advertize your prefixes (routes), i.e. the IP blocks that you host behind your routers, and to do that you need to be an "Autonomous System" and to be one you need to register with IANA (it costs $500 I think and you need to prove that you actually need one) and you get an AS number. The techincal details are here: https://tools.ietf.org/html/rfc4271

[nitinics]

AS Numbers are how you announce the prefixes where content C resides e.g. 1.0.0.0/24 to the Internet, and you (through your provider announcing your prefix to the Internet) find your path to the content C for the services.

http://www.cidr-report.org/cgi-bin/as-report?as=AS15169&view...

Complexities aside - this is how your Internet works.

[lbotos]

If I'm not mistaken it's this:

http://en.wikipedia.org/wiki/Autonomous_System_(Internet)

Basically if you get IPs from ARIN or another RIR:

http://en.wikipedia.org/wiki/Regional_Internet_registry

You get a name on your block.

[TimWolla]

Those are the [Autonomous System numbers](https://en.wikipedia.org/wiki/Autonomous_System_%28Internet%...). They are given out by IANA.