-----BEGIN PGP SIGNED MESSAGE----- The question seems (in my opinion) to be whether registries are delegating netblocks that can be further subdivided, or not. That is, some ISPs hold that if a registry has allocated /16s in some space, those allocations should not be subdivided by the allocatees. If a registry is allocating /19s minimum in some other space, then the allocatees cannot and should not split that space and advertise longer prefixes. In practice, how have corporate divestitures been handled by the registries? Have organizations with portable netblocks been able to split them up and get new allocations from the registries, following the corporate reorganizations? Surely someone on this list has worked through such an event. How did it go? === Bill Nickless http://www.mcs.anl.gov/people/nickless +1 630 252 7390 PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7 nickless@mcs.anl.gov -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com> iQCVAwUBOoiIcKwgm7ipJDXBAQGe6gQAhPs5CCeDOv/y39vHe5Kw2xYJGFK830US pCAjLPC3sUD7essYNAdHdIuTCuETx8L7YQVn2il5Nr6ShPVIhY9Mf8/VftE4AKfb FCbCDrcWfscHseKwjFuzmVUbTuT/6ek8P9bBhwtu/CD/0Gbpt98sY7LM8SXYAq2h or8WgdE86HY= =3ocO -----END PGP SIGNATURE-----