1. All IP Ranges
  2. 50.0.0.0/8
  3. 50.21.0.0/16
  4. AS4181  | 50.21.203.0/24

50.21.203.0/24

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 50.21.203.0/24

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 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
50.21.203.149 jeppson.org 2

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

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

IP Address ASN Details
50.21.203.1 AS4181 TDS TELECOM 8.45ms from Los Angeles, 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
94.64.64.56 AS6799 Ote SA (Hellenic Telecommunications Organisation) 6.17ms from Athens, GR
192.157.17.72 AS53007 Volvo do Brasil Veículos Ltda. 0.65ms from Curitiba, BR
24.162.152.120 AS11427 Charter Communications Inc 7.00ms from Dallas, US
65.66.135.72 AS7018 AT&T Enterprises, LLC 1.39ms from Kansas City, US
121.120.84.88 AS9534 Binariang Berhad 1.18ms from Kuala Lumpur, MY
65.0.117.56 AS16509 Amazon.com, Inc. 0.32ms from Mumbai, IN
54.83.38.168 AS14618 Amazon.com, Inc. 0.24ms from Reston, US
38.12.189.24 AS54600 PEG TECH INC 0.64ms from San Jose, US
112.180.173.88 AS4766 Korea Telecom 7.73ms from Seoul, KR
221.162.146.104 AS4766 Korea Telecom 7.11ms from Seoul, KR
177.185.147.24 AS270814 ZAAZ PROVEDOR DE INTERNET E TELECOMUNICACOES LTDA 6.76ms from São Paulo, BR
18.65.36.104 AS16509 Amazon.com, Inc. 0.20ms from Amsterdam, NL
20.76.132.200 AS8075 Microsoft Corporation 0.24ms from Amsterdam, NL
130.221.185.152 AS85 The Aerospace Corporation 2.30ms from Ashburn, US
23.123.8.104 AS7018 AT&T Enterprises, LLC 15.02ms from Atlanta, US
186.112.143.232 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 12.97ms from Bogotá, CO
20.79.224.40 AS8075 Microsoft Corporation 0.29ms from Frankfurt am Main, DE
139.159.178.232 AS55990 Huawei Cloud Service data center 1.35ms from Guangzhou, CN
172.87.219.200 AS26658 HT 0.26ms from Los Angeles, US
151.41.48.168 AS1267 WIND TRE S.P.A. 7.48ms from Milan, IT
23.146.136.8 AS398041 XCD Telecom 10.98ms from Montreal, CA
31.189.152.136 AS24608 WIND TRE S.P.A. 11.61ms from Rome, IT
198.41.130.24 AS13335 Cloudflare, Inc. 0.67ms from San Jose, US
66.205.148.24 AS14051 Fidium 5.34ms from San Jose, US
35.230.207.216 AS396982 Google LLC 0.18ms from The Dalles, US

Traceroute

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

$
traceroute -a -n -q1 -f3 50.21.203.44
traceroute to 50.21.203.44 (50.21.203.44): 64 hops max, 52 byte packets
3 [] 206.72.210.140 1.393 ms
4 *
5 [AS4181] 50.21.203.44 14.369 ms
Measurement taken from IPinfo ProbeNet in Los Angeles, 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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