ASN AS4181 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4181?

AS4181 is listed under TDS TELECOM.

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.

AS4181 TDS TELECOM | IPGeolocation.io

ASN Lookup Tool

TDS TELECOM tdstelecom.com

US 587 Routes

AS Data

AS4181

AS4181 – TDS TELECOM

AS Number	4181
AS Name	TDS-AS
Organization	TDS TELECOM(tdst-z)
Country	US
Website	tdstelecom.com
Number of IPv4 Routes	584
Number of IPv6 Routes	3
ASN type	ISP
Registry	ARIN
Date Allocated	1994-12-16

ASN Intelligence API for production workflows

Use ASN data for AS4181 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
66.220.104.0/21	AS4181	TDS TELECOM	TDS TELECOM	2048
96.60.10.0/23	AS4181	TDS TELECOM	TDS TELECOM	512
184.61.8.0/23	AS4181	TDS TELECOM	TDS TELECOM	512
134.215.244.0/22	AS4181	TDS TELECOM	TDS TELECOM	1024
67.217.12.0/23	AS4181	TDS TELECOM	TDS TELECOM	512
72.0.160.0/19	AS4181	TDS TELECOM	TDS TELECOM	8192
69.129.241.0/24	AS4181	TDS TELECOM	TDS TELECOM	256
24.54.136.0/22	AS4181	TDS TELECOM	TDS TELECOM	1024
217.143.0.0/16	AS4181	TDS TELECOM	TDS TELECOM	65536
134.215.106.0/24	AS4181	TDS TELECOM	TDS TELECOM	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:       4181
ASName:         TDS-AS
ASHandle:       AS4181
RegDate:        1994-12-16
Updated:        2019-07-03    
Ref:            https://rdap.arin.net/registry/autnum/4181


OrgName:        TDS TELECOM
OrgId:          TDST-Z
Address:        525 Junction Rd.
City:           Madison
StateProv:      WI
PostalCode:     53717
Country:        US
RegDate:        2019-04-23
Updated:        2019-04-23
Ref:            https://rdap.arin.net/registry/entity/TDST-Z


OrgTechHandle: INO44-ARIN
OrgTechName:   IP Network Operations
OrgTechPhone:  +1-800-358-3648 
OrgTechEmail:  ispadmin@tdstelecom.com
OrgTechRef:    https://rdap.arin.net/registry/entity/INO44-ARIN

OrgTechHandle: SERVI6-ARIN
OrgTechName:   Service Activation
OrgTechPhone:  +1-800-358-3648 
OrgTechEmail:  serviceactivation@tdstelecom.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SERVI6-ARIN

OrgTechHandle: INE14-ARIN
OrgTechName:   IP Network Engineering
OrgTechPhone:  +1-800-358-3648 
OrgTechEmail:  IPRequests@tdstelecom.com
OrgTechRef:    https://rdap.arin.net/registry/entity/INE14-ARIN

OrgAbuseHandle: ABUSE163-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-800-358-3648 
OrgAbuseEmail:  abuse@tds.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE163-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
AS668	United States Department of Defense (DoD)	US
AS11062	MTCO Communications	US
AS394330	LTD Broadband LLC	US
AS38880	Micron21 Datacentre Pty Ltd	AU
AS53766	Avago Technologies U.S. Inc.	US
AS11964	Air Wisconsin Airlines Corporation	US
AS215724	Edgevana, Inc.	US
AS6079	RCN	US
AS11852	White House Custom Colour, Inc	US
AS46261	QuickPacket, LLC	US

Upstreams

AS Number	Description	Country
AS9304	HGC Global Communications Limited	HK
AS7195	EDGEUNO S.A.S	CO
AS9505	Chunghwa Telecom Co., Ltd.	TW
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS286	GTT Communications Inc.	US
AS64289	Macarne.com	US
AS32621	Twin City VoIP, Inc.	US
AS37468	Angola Cables	AO
AS2497	Internet Initiative Japan Inc.	JP

Downstreams

AS Number	Description	Country
AS31778	Cascade Medical Imaging	US
AS54248	School Board of Gadsden County	US
AS22582	Luminex Corporation	US
AS54519	US Signal Company, L.L.C.	US
AS32889	Southwestern Wireless, Inc.	US
AS16568	PROMEGA CORPORATION	US
AS40559	CROSSCOM NATIONAL, LLC	US
AS11964	Air Wisconsin Airlines Corporation	US
AS15285	Cash Depot	US
AS55083	Numerex Corp	US