Re:

If the space is from what was originally class a or b, there are some that will filter based on that. An ex employer of mine did that. Bri ----- Original Message ----- From: "Harsha Narayan" <hnarayan@cs.ucsd.edu> To: <nanog@merit.edu> Sent: Wednesday, November 13, 2002 8:53 AM

Hello,

Are there some ISPs who filter prefixes longer than /19 or a /20?. I thought they filtered only prefixes which are longer than /24?

Harsha.