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AS398097 Wintrust Financial Corporation

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

Wintrust Financial Corporation wintrust.com

US 2 Routes

AS Data

AS398097

AS398097 – Wintrust Financial Corporation

AS Number	398097
AS Name	WINTRUST-FINANCIAL-CORPORATION-EG-IL
Organization	Wintrust Financial Corporation(wfc-90)
Country	US
Website	wintrust.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2019-10-29

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Use ASN data for AS398097 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
161.199.76.0/24	AS398097	Wintrust Financial Corporation	Wintrust Financial Corporation	256
161.199.77.0/24	AS398097	Wintrust Financial Corporation	Wintrust Financial Corporation	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:       398097
ASName:         WINTRUST-FINANCIAL-CORPORATION-EG-IL
ASHandle:       AS398097
RegDate:        2019-10-29
Updated:        2019-10-29
Comment:        www.wintrust.com
Comment:        Standard NOC hours 
Comment:        6:00 AM to 7:00 PM CST    
Ref:            https://rdap.arin.net/registry/autnum/398097


OrgName:        Wintrust Financial Corporation
OrgId:          WFC-90
Address:        9700 W. Higgins Road
City:           Rosemont
StateProv:      IL
PostalCode:     60018
Country:        US
RegDate:        2019-04-17
Updated:        2026-01-22
Ref:            https://rdap.arin.net/registry/entity/WFC-90


OrgTechHandle: MASON570-ARIN
OrgTechName:   Mason, Jermaine 
OrgTechPhone:  +1-847-268-1329 
OrgTechEmail:  jmason@wintrust.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MASON570-ARIN

OrgAbuseHandle: WTFCA-ARIN
OrgAbuseName:   WTFC5-ARIN
OrgAbusePhone:  +1-630-594-6235 
OrgAbuseEmail:  wtfcextdom@wintrust.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WTFCA-ARIN

OrgTechHandle: BELAN26-ARIN
OrgTechName:   Belance, Wavyne 
OrgTechPhone:  +1-630-594-6235 
OrgTechEmail:  wbelance@wintrust.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BELAN26-ARIN

OrgTechHandle: WTFCA-ARIN
OrgTechName:   WTFC5-ARIN
OrgTechPhone:  +1-630-594-6235 
OrgTechEmail:  wtfcextdom@wintrust.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WTFCA-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
AS23352	DEFT.COM	US

Upstreams

AS Number	Description	Country
AS23352	DEFT.COM	US

Frequently Asked Questions

What is ASN AS398097?

ASN AS398097 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS398097?

AS398097 is listed under Wintrust Financial Corporation.

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.