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  2. 50.0.0.0/8
  3. 50.21.0.0/16
  4. AS4181  | 50.21.204.0/24

50.21.204.0/24

AS4181  ·  TDS TELECOM

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Summary

Country United States
Domain tdstelecom.com
ASN AS4181
Parent Range 50.21.192.0/20
Registry ARIN
ID NETBLK-TDSNET-BAJA

WHOIS Details

NetHandle:      NET-50-21-192-0-1
OrgID:          TDST
Parent:         NET-50-0-0-0-0
NetName:        NETBLK-TDSNET-BAJA
NetRange:       50.21.192.0 - 50.21.207.255
NetType:        allocation
RegDate:        2011-02-24
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:      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:      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


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:      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

Overlapping Ranges

BGP prefixes that contain 50.21.204.0/24

Range ASN Company Num of IPs
50.21.192.0/20 AS4181 TDS TELECOM 4,096

Nearby Ranges

BGP prefixes that overlap with 50.21.0.0/16

Range ASN Company Num of IPs
50.21.128.0/20 AS14102 Transvision Reseau Inc. 4,096
50.21.112.0/20 AS19045 Direct Communications Cedar Valley, LLC 4,096
50.21.0.0/20 AS20473 1512 Research, LLC 4,096
50.21.240.0/20 AS22645 Blinn College 4,096
50.21.144.0/20 AS27338 GoNetSpeed 4,096
50.21.160.0/20 AS29909 Metro Optic 4,096
50.21.192.0/20 AS4181 TDS TELECOM 4,096
50.21.176.0/20 AS8560 IONOS Inc. 4,096
50.21.80.0/20 AS9471 ONATI 4,096
50.21.104.0/21 AS397005 Central Virginia Services, INC 2,048
50.21.72.0/21 AS26097 Labyrinth Solutions Inc 2,048
50.21.16.0/21 AS21949 Beanfield Technologies Inc. 2,048
50.21.64.0/21 AS21949 Beanfield Technologies Inc. 2,048
50.21.24.0/22 AS62624 Nucleus 1,024
50.21.28.0/22 AS216306 MAX IT Finance LTD 1,024
50.21.96.0/22 AS397016 Hawkeye Telephone Company 1,024
50.21.224.0/23 AS852 Mascon Cable Systems Inc. 512
50.21.227.0/24 AS852 Mascon Cable Systems Inc. 256
50.21.166.0/24 AS29909 Connect4Clouds 256
50.21.168.0/24 AS29909 Storage Pipe Solutions 256
50.21.169.0/24 AS398216 Sichuun 256
50.21.237.0/24 AS852 Mascon Cable Systems Inc. 256
50.21.226.0/24 AS852 Mascon Cable Systems Inc. 256
50.21.236.0/24 AS852 Mascon Cable Systems Inc. 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

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

IP Address ASN Details
50.21.204.1 AS4181 TDS TELECOM 2.73ms from Denver, 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
170.254.142.88 AS265107 Computers World 3.59ms from Chapeco, BR
152.115.139.248 AS31027 GlobalConnect A/S 0.33ms from Copenhagen, DK
166.169.22.232 AS6167 Verizon Business 17.42ms from Dallas, US
84.180.104.56 AS3320 Deutsche Telekom AG 6.66ms from Frankfurt am Main, DE
195.127.152.200 AS702 Verizon Business 2.79ms from Frankfurt am Main, DE
178.55.157.184 AS16086 DNA Oyj 12.26ms from Helsinki, FI
27.3.226.8 AS45543 SaiGon Tourist cable Televition Company 1.29ms from Ho Chi Minh City, VN
14.179.67.184 AS45899 VNPT Corp 5.87ms from Ho Chi Minh City, VN
68.103.110.248 AS22773 Cox Communications Inc. 12.67ms from Kansas City, US
209.141.41.88 AS53667 FranTech Solutions 0.20ms from Las Vegas, US
2.139.138.40 AS3352 TELEFONICA DE ESPANA S.A.U. 1.45ms from Madrid, ES
83.204.82.40 AS3215 Orange S.A. 9.82ms from Marseille, FR
88.37.193.56 AS3269 Telecom Italia S.p.A. 2.02ms from Milan, IT
119.45.5.200 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.14ms from Nanjing, CN
58.156.106.24 AS17506 ARTERIA Networks Corporation 1.63ms from Osaka, JP
165.85.31.168 AS394089 Google LLC 0.15ms from Sao Paulo, BR
67.170.96.136 AS7922 Comcast Cable Communications, LLC 6.00ms from Seattle, US
119.202.87.56 AS4766 Korea Telecom 6.51ms from Seoul, KR
1.234.26.8 AS9318 SK Broadband Co Ltd 0.93ms from Seoul, KR
18.239.63.184 AS16509 Amazon.com, Inc. 0.35ms from Amsterdam, NL
120.14.218.72 AS4837 CHINA UNICOM China169 Backbone 9.36ms from Beijing, CN
3.139.149.8 AS16509 Amazon.com, Inc. 0.19ms from Columbus, US
84.59.220.216 AS3209 Vodafone GmbH 16.57ms from Frankfurt am Main, DE
213.78.80.8 AS13285 TalkTalk Communications Limited 0.73ms from London, GB
98.224.125.72 AS7922 Comcast Cable Communications, LLC 7.12ms from San Jose, US

Traceroute

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

$
traceroute -a -n -q1 -f5 50.21.204.203
traceroute to 50.21.204.203 (50.21.204.203): 64 hops max, 52 byte packets
5 [AS4181] 64.50.241.223 0.627 ms
6 [AS4181] 64.50.244.162 3.091 ms
7 [AS4181] 69.130.31.118 3.117 ms
Measurement taken from IPinfo ProbeNet in Denver, US
On

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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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