By IPZOR · Reviewed
How is an autonomous system different from an IP address?
An IP address identifies an addressing endpoint; an autonomous system describes networks managed under a common routing policy. RFC 1930 defines autonomous systems in terms of routing policy. An ASN is neither a city nor the identifier of an individual server.
Why can one brand have several ASNs?
A directory brand can relate to multiple registered organizations and networks. A network can also carry services for different customers. IPZOR separates curated brand relationships, automatically compiled organization records and source observations. Association does not establish address ownership or platform verification of a provider.
How should I read a directory profile?
Check sources, snapshot date and associated ASNs before interpreting the registration region or name. CAIDA's AS-to-organization mapping is research data, not a company registration certificate. IPZOR labels rule-based categories as inferred and keeps missing registration data unknown. Address intervals and address counts are database statistics, not counts of servers, customers or facilities.