Hi Richard, It is not required to even have your own network. You could have some other network provider advertise your prefix and have them do the routing .. Is if recommended to have a network which is multi-homed .. YES.. but it is not required to run the LIR PA space on your own network. Being a LIR doesn't make one an ISP... A LIR is just a registration office for IP addresses. We run the LIR PA IP space of a city for instance on our network in the Netherlands. And the prefixes of another LIR ISP that decided not to run their own network anymore. In both cases they rely on our network to keep it up and running for them. So they don't have to. Does that help ? Regards, Erik Bais Erik Bais | A2B Internet BV | +31 299 707 115 ( Office ) | ebais@a2b-internet.com<mailto:ebais@a2b-internet.com> | From: address-policy-wg-bounces@ripe.net [mailto:address-policy-wg-bounces@ripe.net] On Behalf Of Richard Krogh (RKG) Sent: woensdag 22 februari 2012 14:28 To: address-policy-wg@ripe.net Subject: [address-policy-wg] Multihomed demand for ISP Hi. Not shure if I am writing in the correct forum, but here goes: My company is recognized as an ISP, caused by our lease/reservation of RIPE based IP addresses. Question: Is it a ripe-demand that ISPs should have multihomed lines to their equipment or is single line OK? (beware that I am not talking of performance or the company's safety, only about what demands RIPE require). Thanks in advance. Richard Krogh