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Questions tagged [as-number]

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16
votes
3answers
9k views

How IP addresses are mapped to Autonomous System Numbers?

How are IP addresses mapped to Autonomous System Numbers (ASNs)? Is there a reference database for it? Then how are these Autonomous Systems geographically located?
4
votes
1answer
204 views

Is it safe to assume that two hosts on the same /24 network belong to the same AS-number?

Assume two IP-addresses in the same /24 network (say 1.2.3.*): 1.2.3.X 1.2.3.Y Is it safe to assume that these two hosts belong to the same AS-number? If not, roughly how often is that the case that ...