ASN AS40123 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40123?

AS40123 is listed under Transaction Network Services, Inc..

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.

AS40123 Transaction Network Services, Inc.

ASN Lookup Tool

Transaction Network Services, Inc. tnsi.com

US 7 Routes

AS Data

AS40123

AS40123 – Transaction Network Services, Inc.

AS Number	40123
AS Name	R2G-2
Organization	Transaction Network Services, Inc.(tns-8)
Country	US
Website	tnsi.com
Number of IPv4 Routes	7
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2006-07-27

ASN Intelligence API for production workflows

Use ASN data for AS40123 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
83.126.56.0/24	AS40123	Transaction Network Services, Inc.	euNetworks Customers PA Assignment	256
83.126.22.0/24	AS40123	Transaction Network Services, Inc.	Transaction Network Services, Inc.	256
83.126.16.0/24	AS40123	Transaction Network Services, Inc.	Transaction Network Services, Inc.	256
83.126.17.0/24	AS40123	Transaction Network Services, Inc.	Transaction Network Services, Inc.	256
204.14.0.0/21	AS40123	Transaction Network Services, Inc.	Transaction Network Services, Inc.	2048
41.221.210.0/24	AS40123	Transaction Network Services, Inc.	IPX assignement for South Africa	256
38.133.160.0/24	AS40123	Transaction Network Services, Inc.	Transaction Network Services	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:       40123
ASName:         R2G-2
ASHandle:       AS40123
RegDate:        2006-07-27
Updated:        2021-06-30    
Ref:            https://rdap.arin.net/registry/autnum/40123


OrgName:        Transaction Network Services, Inc.
OrgId:          TNS-8
Address:        10740 Parkridge Boulevard, Suite 100
City:           Reston
StateProv:      VA
PostalCode:     20191
Country:        US
RegDate:        1998-09-08
Updated:        2024-07-03
Ref:            https://rdap.arin.net/registry/entity/TNS-8


OrgAbuseHandle: NETWO10135-ARIN
OrgAbuseName:   Network Architects
OrgAbusePhone:  +1-703-453-8300 
OrgAbuseEmail:  NetworkArchitecturalEngineering@tnsi.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO10135-ARIN

OrgNOCHandle: NOC1590-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-800-240-4824 
OrgNOCEmail:  globalipdesk@tnsi.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC1590-ARIN

OrgAbuseHandle: BEHAN80-ARIN
OrgAbuseName:   Behan, Robbie 
OrgAbusePhone:  +0114 2920200 
OrgAbuseEmail:  rbehan@tnsi.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BEHAN80-ARIN

OrgTechHandle: NETWO10135-ARIN
OrgTechName:   Network Architects
OrgTechPhone:  +1-703-453-8300 
OrgTechEmail:  NetworkArchitecturalEngineering@tnsi.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO10135-ARIN

OrgTechHandle: BEHAN80-ARIN
OrgTechName:   Behan, Robbie 
OrgTechPhone:  +0114 2920200 
OrgTechEmail:  rbehan@tnsi.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BEHAN80-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
AS31713	A PCCW Company	BE
AS8220	COLT Technology Services Group Limited	GB
AS3491	PCCW Global, Inc.	US
AS3491	PCCW Global	US
AS13237	euNetworks GmbH	DE
AS1239	Cogent Communications, LLC	US
AS286	GTT Communications Inc.	NL
AS286	GTT Communications Inc.	US
AS31713	Gateway Communications	BE
AS3257	GTT Communications Inc.	US

Upstreams

AS Number	Description	Country
AS31713	A PCCW Company	BE
AS8220	COLT Technology Services Group Limited	GB
AS3491	PCCW Global, Inc.	US
AS13237	euNetworks GmbH	DE
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS22496	Score Priority Corp	US