ASN and Peering Problem

Wed Dec 8 19:59:18 UTC 2004

We currently have two /19 that we advertise on a single ASN. A client
would like to obtain /23 or /22 from us. This is not a problem, except
that their primary internet provider is someone else, other than us.
I think that they would need to have their own ASN to advertise their
portion of our ip space to their peers.

My question is, should we provide the ASN or should they apply for an ASN?
What is the minimum block considered routable, is it reasaonable to
advertise a /23 on its own ASN?

Are there any other solutions I haven't thought of?

Thanks,
Adi