204.15.56.0/23

AS4181 · TDS TELECOM

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Summary

Country	United States
Domain	tdstelecom.com
ASN	AS4181
Parent Range	204.15.56.0/21
Registry	ARIN
ID	NETBLK-TDSNET-BEND

WHOIS Details

NetHandle:      NET-204-15-56-0-1
OrgID:          TDST
Parent:         NET-204-0-0-0-0
NetName:        NETBLK-TDSNET-BEND
NetRange:       204.15.56.0 - 204.15.63.255
NetType:        allocation
RegDate:        2011-03-28
Updated:        2019-07-10
Source:         ARIN


OrgID:          TDST
OrgName:        TDS TELECOM
CanAllocate:    
Street:         525 Junction Rd.
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53717
Comment:        http://www.tdstelecom.com
RegDate:        1994-12-16
Updated:        2024-11-25
OrgAdminHandle: INE14-ARIN
OrgTechHandle:  INE14-ARIN
OrgTechHandle:  INO44-ARIN
OrgTechHandle:  SERVI6-ARIN
OrgAbuseHandle: ABUSE163-ARIN
Source:         ARIN


POCHandle:      SERVI6-ARIN
IsRole:         Y
LastName:       Service Activation
FirstName:      
Street:         525 Junction Rd.
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53717
RegDate:        2004-10-19
Updated:        2022-07-18
OfficePhone:    +1-800-358-3648
Mailbox:        serviceactivation@tdstelecom.com
Source:         ARIN


POCHandle:      ABUSE163-ARIN
IsRole:         Y
LastName:       abuse
FirstName:      
Street:         525 Junction Rd
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53717
RegDate:        2003-01-03
Updated:        2025-11-05
OfficePhone:    +1-800-358-3648
Mailbox:        abuse@tds.net
Source:         ARIN


POCHandle:      INO44-ARIN
IsRole:         Y
LastName:       IP Network Operations
FirstName:      
Street:         525 Junction Road
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53717
RegDate:        2012-01-12
Updated:        2025-11-05
OfficePhone:    +1-800-358-3648
Mailbox:        ispadmin@tdstelecom.com
Source:         ARIN


POCHandle:      INE14-ARIN
IsRole:         Y
LastName:       IP Network Engineering
FirstName:      
Street:         525 Junction Road
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53717
RegDate:        2012-01-12
Updated:        2025-02-20
OfficePhone:    +1-800-358-3648
Mailbox:        IPRequests@tdstelecom.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 204.15.56.0/23

Range	ASN	Company	Num of IPs
204.15.56.0/21	AS4181	TDS TELECOM	2,048

Nearby Ranges

BGP prefixes that overlap with 204.15.0.0/16

Range	ASN	Company	Num of IPs
204.15.24.0/21	AS46262	ResTech Services LLC	2,048
204.15.8.0/21	AS13331	MetaPeer	2,048
204.15.152.0/21	AS4497	Upsala Co-operative Telephone Association	2,048
204.15.72.0/21	AS16509	Amazon.com, Inc.	2,048
204.15.248.0/21	AS46562	Performive LLC	2,048
204.15.56.0/21	AS4181	TDS TELECOM	2,048
204.15.184.0/21	AS398649	SwitchWorks Technologies Inc.	2,048
204.15.192.0/21	AS30176	Priority Colo Inc	2,048
204.15.144.0/21	AS30526	NeptunoMedia Inc.	2,048
204.15.120.0/21	AS33398	Miva Merchant, Inc.	2,048
204.15.100.0/22	AS17378	TierPoint, LLC	1,024
204.15.132.0/22	AS33322	Network Data Center Host, Inc.	1,024
204.15.220.0/22	AS31915	Mojo Broadband	1,024
204.15.48.0/22	AS33606	TekLinks, Inc.	1,024
204.15.164.0/22	AS35937	MarquisNet	1,024
204.15.176.0/22	AS19609	M&A Technology, Inc	1,024
204.15.84.0/22	AS13415	FirstDigital Communications, LLC	1,024
204.15.4.0/22	AS200598	Lunarnaut, LLC	1,024
204.15.232.0/22	AS14712	One Step Consulting, Inc.	1,024
204.15.52.0/22	AS15204	INTERSTATE TELECOMMUNICATIONS COOPERATIVE, INC.	1,024
204.15.96.0/22	AS29765	DataChambers, LLC	1,024
204.15.20.0/22	AS32934	Facebook, Inc.	1,024
204.15.40.0/23	AS133120	Hosted Network Pty Ltd	512
204.15.44.0/23	AS16942	Citizens Telephone Cooperative	512
204.15.32.0/23	AS33361	THE WIRE INC.	512
204.15.110.0/23	AS53597	Hoyos Consulting LLC	512
204.15.43.0/24	AS399347	Simple Fiber, LLC	256
204.15.42.0/24	AS400716	Redmond Hosting	256
204.15.46.0/24	AS17378	Galls	256
204.15.171.0/24	AS137544	Bullhorn International Inc.	256
204.15.41.0/24	AS133120	HN	256
204.15.40.0/24	AS133120	HN	256
204.15.169.0/24	AS53699	Panamax Inc	256
204.15.207.0/24	AS174	GRAYCOM, L.C.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

6 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
204.15.57.41	AS4181 TDS TELECOM	`13.89ms` from Seattle, US
204.15.56.1	AS4181 TDS TELECOM	`7.09ms` from Seattle, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
183.172.143.135	AS4538 China Education and Research Network Center	`5.40ms` from Beijing, CN
134.255.3.71	AS5483 Magyar Telekom Plc.	`6.13ms` from Budapest, HU
69.130.85.119	AS4181 TDS TELECOM	`2.98ms` from Chicago, US
35.225.83.55	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
87.154.152.215	AS3320 Deutsche Telekom AG	`2.90ms` from Duesseldorf, DE
220.187.182.119	AS4134 CHINANET-BACKBONE	`8.30ms` from Hangzhou, CN
112.180.174.247	AS4766 Korea Telecom	`7.95ms` from Seoul, KR
85.25.147.71	AS29066 velia.net Internetdienste GmbH	`0.32ms` from Strasbourg, FR
34.168.54.247	AS396982 Google LLC	`0.16ms` from The Dalles, US
124.224.252.103	AS4134 CHINANET-BACKBONE	`2.87ms` from Zhongwei, CN
172.73.250.183	AS11426 Charter Communications Inc	`14.46ms` from Charlotte, US
117.247.147.167	AS9829 National Internet Backbone	`17.22ms` from Chennai, IN
31.13.14.215	AS197784 Gibon Ljungby AB	`6.55ms` from Copenhagen, DK
63.33.203.199	AS16509 Amazon.com, Inc.	`0.29ms` from Dublin, IE
221.131.193.103	AS56041 China Mobile communications corporation	`4.97ms` from Hangzhou, CN
79.253.112.119	AS3320 Deutsche Telekom AG	`3.96ms` from Nuernberg, DE
20.163.10.215	AS8075 Microsoft Corporation	`0.24ms` from Phoenix, US
52.242.17.167	AS8075 Microsoft Corporation	`0.18ms` from Quebec, CA
211.34.151.7	AS55615 DOUZONEBIZON	`3.44ms` from Seoul, KR
119.3.55.71	AS55990 Huawei Cloud Service data center	`2.77ms` from Shanghai, CN
106.118.83.71	AS4134 CHINANET-BACKBONE	`9.07ms` from Shijiazhuang, CN
188.22.238.135	AS8447 A1 Telekom Austria AG	`11.78ms` from Vienna, AT
213.109.35.71	AS35745 Provector Sp. z o.o	`8.83ms` from Warsaw, PL
49.0.62.7	AS400318 Versa Networks, Inc.	`0.76ms` from Chennai, IN
20.12.190.71	AS8075 Microsoft Corporation	`0.31ms` from Des Moines, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 204.15.56.1

traceroute to 204.15.56.1 (204.15.56.1): 64 hops max, 52 byte packets

2 [AS917] 170.39.227.2 0.161 ms

3 [] 84.17.33.8 0.528 ms

4 [] 206.81.80.178 13.198 ms

5 [AS4181] 204.15.56.1 7.337 ms

Measurement taken from

IPinfo ProbeNet in Seattle, US

On December 28th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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