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SirPokeSmottington 0 points ago +1 / -1

Used to be that anything less than a /19 was rejected by the backbone carriers

That's when we were running out of address space. I think they've eased up now.

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mintscape 2 points ago +2 / -0

The problem was the size of the global routing table, it got to the stage where the mid tier carrier class routers were getting close to running out of memory even when upgraded to max memory. So carriers refused to accept anything that wasn't summarized to at least a /19.

Likely changed now, those routers should be long retired by now.