Rackspace is tracked by Botcrawl as cloud / managed hosting associated with AS27357. The record includes representative routed prefix 146.20.0.0/16 for import validation and network identity matching.
Traffic from this network should be evaluated as infrastructure-origin traffic rather than automatically treated as a normal residential visitor. Combine ASN, CIDR, hostname, user-agent, request path, rate, geography, and rule outcomes before enforcement.
Log by default. Rate-limit or block browser-looking traffic from this network when request volume, path pattern, or behavior indicates automation.