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AS40427 Cisco Systems Ironport Division

Q: Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

ASN Lookup Tool

Cisco Systems Ironport Division cisco.com

US 2 Routes

AS Data

AS40427

AS40427 – Cisco Systems Ironport Division

AS Number	40427
AS Name	IRONPORT-SYSTEMS-CI365
Organization	Cisco Systems Ironport Division(cisl-7)
Country	US
Website	cisco.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2007-02-16

ASN Intelligence API for production workflows

Use ASN data for AS40427 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
194.165.199.0/24	AS40427	Cisco Systems Ironport Division	Cisco Systems, Inc.	256
194.165.198.0/24	AS40427	Cisco Systems Ironport Division	Cisco Systems, Inc.	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       40427
ASName:         IRONPORT-SYSTEMS-CI365
ASHandle:       AS40427
RegDate:        2007-02-16
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/40427


OrgName:        Cisco Systems Ironport Division
OrgId:          CISL-7
Address:        170 West Tasman Drive
City:           San Jose
StateProv:      CA
PostalCode:     95134
Country:        US
RegDate:        2010-11-09
Updated:        2023-02-03
Ref:            https://rdap.arin.net/registry/entity/CISL-7


OrgTechHandle: BOUDJ-ARIN
OrgTechName:   BOUDJEDAIMI, SOFIANE 
OrgTechPhone:  +1-408-527-7461 
OrgTechEmail:  sboudjed@cisco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BOUDJ-ARIN

OrgNOCHandle: ISO3-ARIN
OrgNOCName:   Ironport Network Operations
OrgNOCPhone:  +1-650-898-1526 
OrgNOCEmail:  netops-ironport@cisco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ISO3-ARIN

OrgTechHandle: ISO3-ARIN
OrgTechName:   Ironport Network Operations
OrgTechPhone:  +1-650-898-1526 
OrgTechEmail:  netops-ironport@cisco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ISO3-ARIN

OrgAbuseHandle: INA15-ARIN
OrgAbuseName:   Ironport Network Abuse
OrgAbusePhone:  +1-408-424-1164 
OrgAbuseEmail:  netops-ironport@cisco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/INA15-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS16417	Cisco Systems Ironport Division	US

Upstreams

AS Number	Description	Country
AS16417	Cisco Systems Ironport Division	US

Frequently Asked Questions

What is ASN AS40427?

ASN AS40427 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40427?

AS40427 is listed under Cisco Systems Ironport Division.

What do peers, upstreams, and downstreams mean?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data included here?

WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.