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AS40668 Fenwal, Inc. | IPGeolocation.io

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

Fenwal, Inc. fresenius.com

US 2 Routes

AS Data

AS40668

AS40668 – Fenwal, Inc.

AS Number	40668
AS Name	FENWAL-INCORPORATED
Organization	Fenwal, Inc.(fenwa-1)
Country	US
Website	fresenius.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2008-02-25

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
208.88.1.0/24	AS40668	Fenwal, Inc.	Fenwal, Inc.	256
208.88.0.0/24	AS40668	Fenwal, Inc.	Fenwal, 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:       40668
ASName:         FENWAL-INCORPORATED
ASHandle:       AS40668
RegDate:        2008-02-25
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/40668


OrgName:        Fenwal, Inc.
OrgId:          FENWA-1
Address:        3 Corporate Dr.
City:           Lake Zurich
StateProv:      IL
PostalCode:     60060
Country:        US
RegDate:        2008-02-01
Updated:        2025-01-13
Ref:            https://rdap.arin.net/registry/entity/FENWA-1


OrgAbuseHandle: INFRA23-ARIN
OrgAbuseName:   Infrastructure Analyst
OrgAbusePhone:  +1-847-550-2800 
OrgAbuseEmail:  FDT_GI_Network@fresenius.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/INFRA23-ARIN

OrgTechHandle: INFRA23-ARIN
OrgTechName:   Infrastructure Analyst
OrgTechPhone:  +1-847-550-2800 
OrgTechEmail:  FDT_GI_Network@fresenius.com
OrgTechRef:    https://rdap.arin.net/registry/entity/INFRA23-ARIN

RTechHandle: INFRA23-ARIN
RTechName:   Infrastructure Analyst
RTechPhone:  +1-847-550-2800 
RTechEmail:  FDT_GI_Network@fresenius.com
RTechRef:    https://rdap.arin.net/registry/entity/INFRA23-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
AS33491	Comcast Cable Communications, LLC	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US

Frequently Asked Questions

What is ASN AS40668?

ASN AS40668 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40668?

AS40668 is listed under Fenwal, Inc..

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.