Autonomous System Fields

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An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators on behalf of a single administrative entity or domain that presents a common, clearly defined routing policy to the internet.

Autonomous System Field Details

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Field Description Level

as.number

Unique number allocated to the autonomous system. The autonomous system number (ASN) uniquely identifies each network on the Internet.

type: long

example: 15169

extended

as.organization.name

Organization name.

type: keyword

Multi-fields:

  • as.organization.name.text (type: match_only_text)

example: Google LLC

extended

Field Reuse

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The as fields are expected to be nested at:

  • client.as
  • destination.as
  • server.as
  • source.as
  • threat.enrichments.indicator.as
  • threat.indicator.as

Note also that the as fields are not expected to be used directly at the root of the events.