I have an organization which I allocated 147.237.0.0/16 from my country block. They then wanted to subnet and hand out /24s and /23s to the dozens of offices they have scattered thru the country and to allow each office to connect to whatever ISP they wish. I told them that Sprint would block the announcements of /24s and the like when coming from 147.237.0.0. They said, then why does Sprint allow its customers to announce /24s from their nets? They gave me as examples: 148.212.0.0 and 145.248.0.0. I checked and sure enough here is what I found: *>i148.212.1.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.2.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.3.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.4.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.5.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.6.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.7.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.8.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.9.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.10.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.11.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.12.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.13.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.14.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.15.0/24 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.16.0/20 192.121.156.41 100 0 1800 1239 1791 1292 i *>i148.212.32.0/20 192.121.156.41 100 0 1800 1239 1791 1292 i I didn't have a good answer. Can anyone tell me what I should tell this organization? Thanks, Hank