Youtube had previously registered the CIDR block that contains the IP addresses -

Pakistan then registered the CIDR block that contains the IP addresses -

Due to the longer prefix, Youtube traffic was thus directed to Pakistan however what about the IP addresses that is not contained in Pakistan's newly registered CIDR? Was traffic still delivered there? #confused

Would appreciate clarification here! Thanks

  • I have found information stating that Youtube's DNS and Web Servers were contained in ( which falls within Pakistan's CIDR block. So could the other 256 IP addresses that do not fall within this block be internal unreachable addresses?
    – ellefc
    Commented Apr 1, 2016 at 20:04
  • This question has nothing to do with a professional network under your control. You will need to ask Google about this.
    – Ron Maupin
    Commented Apr 1, 2016 at 20:20

1 Answer 1


The most specific route is preferred. 24 is longer ("more specific") than 22, so it will be used. If they announced only one /24, then they only took over that one /24 out of the larger /22.

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