On Feb 19, 1997, Hank Nussbacher wrote:

How is @Home managing to pass these nets pass Sprint and AGIS with their prefix filtering rules?

*>i24.0.0.0/18 192.121.156.41 100 0 1800 1239 6172 i *>i24.0.0.0/14 192.121.156.41 100 0 1800 1239 6172 i *>i24.1.0.0/17 192.121.156.41 100 0 1800 1239 6172 i *>i24.48.0.0/18 192.121.156.41 100 0 1800 1239 1673 1677 ? *>i24.64.0.0/19 192.121.156.41 100 0 1800 1239 1794 3602 3602 3602 6327 6327 i *>i24.64.32.0/19 192.121.156.41 100 0 1800 1239 1794 3602 3602 3602 6327 6327 6327 i *>i24.88.0.0/18 192.121.156.41 100 0 1800 1239 3561 i *>i24.96.0.0/18 192.121.156.41 100 0 1800 1239 1791 6541 i *>i24.108.0.0/18 192.121.156.41 100 0 1800 1239 3561 577 852 i *>i24.112.0.0/18 192.121.156.41 100 0 1800 1239 1793 6463 i *>i24.112.32.0/19 192.121.156.41 100 0 1800 1239 3561 2493 8 *>i24.113.0.0/18 192.121.156.41 100 0 1800 1239 6177 i *>i24.113.32.0/19 192.121.156.41 100 0 1800 1239 3561 2493 812 i *>i24.124.0.0/18 192.121.156.41 100 0 1800 1239 3561 i *>i24.128.0.0/18 192.121.156.41 100 0 1800 1 560 7015 i *>i24.129.0.0/18 192.121.156.41 100 0 1800 1 7017 i *>i24.131.0.0/18 192.121.156.41 100 0 1800 1 5638 7016 i *>i24.131.128.0/18 192.121.156.41 100 0 1800 1 7756 i *>i24.192.0.0/18 192.121.156.41 100 0 1800 1239 3561 1221 i

Sprint probably decided to apply the standard /19 filter to the IP space in 24/8 since the InterNIC is allocating subnets in it. All of the networks you cite have masks that are /19 or shorter. So the answer is, 24/8 is a special case. Alec -- +------------------------------------+--------------------------------------+ |Alec Peterson - ahp@hilander.com | Erols Internet Services, INC. | |Network Engineer | Springfield, VA. | +------------------------------------+--------------------------------------+