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AS1745 Chicago Reseach and Trading

Q: Why is WHOIS data shown for an ASN?

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

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Chicago Reseach and Trading

US 0 Routes

AS Data

AS1745

AS1745 – Chicago Reseach and Trading

AS Number	1745
AS Name	CRT-AS
Organization	Chicago Reseach and Trading(crt-19)
Country	US
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1992-02-19

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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:       1745
ASName:         CRT-AS
ASHandle:       AS1745
RegDate:        1992-02-19
Updated:        1992-02-19    
Ref:            https://rdap.arin.net/registry/autnum/1745


OrgName:        Chicago Reseach and Trading
OrgId:          CRT-19
Address:        Suite 3300
Address:         440 South LaSalle St.
City:           Chicago
StateProv:      IL
PostalCode:     60605
Country:        US
RegDate:        1992-02-19
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/CRT-19


OrgAbuseHandle: CKN23-ARIN
OrgAbuseName:   No, Contact Known
OrgAbusePhone:  +1-800-555-1234 
OrgAbuseEmail:  nobody@example.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CKN23-ARIN

OrgTechHandle: CKN23-ARIN
OrgTechName:   No, Contact Known
OrgTechPhone:  +1-800-555-1234 
OrgTechEmail:  nobody@example.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CKN23-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

Frequently Asked Questions

What is ASN AS1745?

ASN AS1745 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS1745?

AS1745 is listed under Chicago Reseach and Trading.

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.