Micro-allocation needed?

[ask at develooper.com (Ask Bjørn Hansen)]

Hi everyone,

We're going to anycast a /24 for some DNS servers (and possibly another UDP based service)[1].

I see that ARIN are listing on https://www.arin.net/knowledge/ip_blocks.html the smallest allocations from each prefix.   Will we have trouble getting a /24 announced if we take it from a regular /20?

Or in other words: Do we need to get a block from ARIN from one of the prefixes that they specify they allocate out in /24 chunks?


 - ask

[1] For the NTP Pool system - http://www.pool.ntp.org/ - your network probably sent some of the 50-100,000 requests the pool members got this second. And this. And this. ...   :-)