YouTube disappeared from the Internet on Feb 24 after a Pakistani ISP tried to block it by advertising a more specific route in BGP.
BGP is used mainly for routing, but you can also do geographical load-balancing with it.
It’s unlikely that secure BGP will take off anytime soon because of the overhead involved.
But companies may consider advertising only /24 blocks to prevent others from being able to advertise more specific routes. The downside to that is bigger routing tables and more memory required to hold them for everybody.
cnet.com: How Pakistan knocked YouTube offline (and how to make sure it never happens again)
arstechnica.com: Insecure routing redirects YouTube to Pakistan
NANOG thread: YouTube IP Hijacking
Internet-Wide Catastrophe—Last Year
Free Keynote Internet Health Report
Renesys Blog
BG4.AS
BGPlay
wikipedia: BGP, Autonomous System
cnet.com: YouTube disappears from the screen temporarily
nice to hear that you like learning asia languages.
may i ask what language are you /have you been learning?
I speak chinese and japese(actually, the two have quite a few in common:-)
こんにちは！
你好！