AS40427 — IRONPORT-SYSTEMS-CI365

AS40427 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The AS handle IRONPORT-SYSTEMS-CI365 is held by Cisco Systems Ironport Division.

What it's used for

• The space carries corporate infrastructure for Cisco's IronPort security division, identified by the netname US-CISCO1-19960205 and registrant Cisco Systems, Inc.
• The inventory consists of 512 IPv4 addresses within a single prefix, 194.165.198.0/23, with 1 observed neighbour, indicating a small, isolated corporate estate rather than a transit or access network.
• Traffic from this AS represents internal corporate endpoints and security appliances for Cisco's IronPort business unit, which provides email security and web security solutions.

Notable

• The registrant Cisco Systems, Inc. aligns with the announcer, confirming the space is owned by the parent company.
• IronPort Systems was acquired by Cisco Systems, and this AS represents the legacy address space retained for the division's operations.
• The address inventory is a single /23 block, a compact allocation typical for a specific corporate division rather than a broad service provider.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 194.165.198.0/23

Upstream networks

• AS16417 Cisco Systems Ironport Division

Adjacent networks

• AS16417 Cisco Systems Ironport Division