Re:

Harsha, Yes we do (Swisscom IP-Plus AS3303). We filter on RIR minimal allocations and anything longer than /21 within historical A/B space André ----- Original Message ----- From: "Harsha Narayan" <hnarayan@cs.ucsd.edu> To: <nanog@merit.edu> Sent: Wednesday, November 13, 2002 5:53 PM

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.