> - a SLA, or a leaf site (/48) > - an NLA, or small ISP (/n, where n < 48) > - a TLA, or big ISP (/16, /29-35 sTLA, or /24-28 pTLA) please remove *LA terms. they are dead. the operational community learned long ago that, for many reasons, we can not say small/medium/large site/isp/registry. we start allocations with smaller windows and increase the window size based on actual utilization. randy