ASN (Autonomous System Number)

An Autonomous System Number (ASN) uniquely identifies an autonomous system — a collection of IP ranges under one administrative control, such as an ISP, a hosting company or a large enterprise. ASNs are how networks announce routes to each other via BGP, the internet's routing protocol. Every public IP belongs to an ASN, and a quick lookup reveals the operator behind an address. That is why the ASN is a strong signal of an IP's nature: consumer ISPs, mobile carriers and cloud/hosting providers each occupy recognisable autonomous systems.

Anti-fraud systems lean heavily on ASN when judging traffic. An IP whose ASN belongs to a well-known hosting provider is flagged as datacenter and may be treated as higher-risk than one from a residential ISP, which feeds into its IP reputation and fraud score. s4m proxies are honest, authenticated datacenter proxies, so their ASN identifies them as such — great for stability and price, and appropriate for tasks where a datacenter origin is acceptable. Check the ASN and GeoIP of an exit IP before a job so you know how a destination is likely to classify it.

Before a job, look up the ASN and GeoIP of the exit IP you will use so you know how a destination is likely to classify it. s4m proxies are honest datacenter proxies, so their ASN identifies them as datacenter — the right expectation to set. Where a task needs a stable, exclusive origin whose reputation you control, an s4m dedicated IP keeps that address consistent across runs instead of drawing from a shared pool.