Fastly is tracked by Botcrawl as cdn / edge network associated with AS54113. The record includes representative routed prefix 151.101.0.0/22 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. Do not blanket-block Fastly ranges unless blocking a specific unwanted edge-origin pattern.