Paul, > Most of our customers don't even know what an AS number is! :-)
Maybe true. However, I'd conjecture that you'd have picked up a multitude of additional peering via your uknof post if an AS number had been included in your email (anywhere - subject, body, signature). So we're complete (and I don't want to steal your thread); I work for CloudFlare and we are AS13335 (LINX & LONAP peering points). So ... what is your ASN? Inquiring minds want to know. Martin
