ASN AS13738 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS13738?

AS13738 is listed under Group One Trading LLC.

What do peers, upstreams, and downstreams mean in ASN data?

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 shown for an ASN?

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

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS13738 Group One Trading LLC

ASN Lookup Tool

Group One Trading LLC group1.com

US 0 Routes

AS Data

AS13738

AS13738 – Group One Trading LLC

AS Number	13738
AS Name	MRSTOCK-DOWNERS
Organization	Group One Trading LLC(gol-3)
Country	US
Website	group1.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1999-08-09

ASN Intelligence API for production workflows

Use ASN data for AS13738 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

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:       13738
ASName:         MRSTOCK-DOWNERS
ASHandle:       AS13738
RegDate:        1999-08-09
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/13738


OrgName:        Group One Trading LLC
OrgId:          GOL-3
Address:        425 S Financial Place
Address:        Suite 3400
City:           Chicago
StateProv:      IL
PostalCode:     60605
Country:        US
RegDate:        1999-08-09
Updated:        2023-10-13
Ref:            https://rdap.arin.net/registry/entity/GOL-3


OrgAbuseHandle: TMD37-ARIN
OrgAbuseName:   Detrick, Tami Marie
OrgAbusePhone:  +1-215-701-7910 
OrgAbuseEmail:  tami.detrick@group1.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TMD37-ARIN

OrgNOCHandle: GTEAM-ARIN
OrgNOCName:   G1-TeamSupport
OrgNOCPhone:  +1-215-701-7910 
OrgNOCEmail:  arinnotifications@group1.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/GTEAM-ARIN

OrgAbuseHandle: GTEAM-ARIN
OrgAbuseName:   G1-TeamSupport
OrgAbusePhone:  +1-215-701-7910 
OrgAbuseEmail:  arinnotifications@group1.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/GTEAM-ARIN

OrgTechHandle: GTEAM-ARIN
OrgTechName:   G1-TeamSupport
OrgTechPhone:  +1-215-701-7910 
OrgTechEmail:  arinnotifications@group1.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GTEAM-ARIN

OrgTechHandle: TMD37-ARIN
OrgTechName:   Detrick, Tami Marie
OrgTechPhone:  +1-215-701-7910 
OrgTechEmail:  tami.detrick@group1.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TMD37-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
AS11640	Group One Trading LLC	US
AS286	GTT Communications Inc.	NL
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS11640	Group One Trading LLC	US
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS11640	Group One Trading LLC	US

Legacy Routes

74.115.105.0/24