Your assumption is generally true with most any provider. They may even accept something smaller, but it won't make it very far if less than /24. It's also a good idea to announce a covering prefix in case some peer network filters on IRR minimums. On 8/18/08, Mike Lyon <mike.lyon@gmail.com> wrote:
Hello All,
I am curious as to the routing polices of the bigger providers such as ATT, L3, Internap, Qwest, Etc Etc... Is there a standard size netblock that these providers will accept? For instance, if customer "A" gets a /22 from ARIN and his upstream provider is ATT and L3, what would the smallest block be that those providers would accept from customer "A"? Would they accept something as small as a /24?
Thanks, Mike
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