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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:      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:      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:      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

193 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 2.74ms 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
66.196.109.88 AS26101 Yahoo Holdings Inc. 0.94ms from Buffalo, US
161.47.106.200 AS19994 Rackspace Hosting 1.23ms from Chicago, US
50.50.241.8 AS5650 Frontier Communications of America, Inc. 11.48ms from Chicago, US
112.92.7.8 AS17622 China Unicom Guangzhou network 3.32ms from Guangzhou, CN
115.76.229.104 AS7552 Viettel Group 1.42ms from Ho Chi Minh City, VN
70.123.168.248 AS11427 Charter Communications Inc 7.91ms from Houston, US
23.42.3.56 AS16625 Akamai Technologies, Inc. 0.08ms from Johannesburg, ZA
82.44.15.168 AS5089 Virgin Media Limited 10.76ms from London, GB
75.80.20.104 AS20001 Charter Communications Inc 6.39ms from Los Angeles, US
88.11.52.88 AS3352 TELEFONICA DE ESPANA S.A.U. 11.30ms from Madrid, ES
88.7.138.216 AS3352 TELEFONICA DE ESPANA S.A.U. 7.59ms from Madrid, ES
73.88.20.248 AS7922 Comcast Cable Communications, LLC 9.24ms from Minneapolis, US
80.145.36.88 AS3320 Deutsche Telekom AG 2.12ms from Nuernberg, DE
95.34.60.200 AS2119 Telenor Norge AS 9.94ms from Oslo, NO
157.143.213.216 AS8399 SEWAN SAS 0.73ms from Paris, FR
3.83.110.8 AS14618 Amazon.com, Inc. 0.44ms from Reston, US
179.159.146.40 AS28573 Claro NXT Telecomunicacoes Ltda 8.17ms from Sao Paulo, BR
121.182.150.216 AS4766 Korea Telecom 5.43ms from Seoul, KR
39.108.195.72 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.12ms from Shenzhen, CN
57.180.123.24 AS16509 Amazon.com, Inc. 0.17ms from Tokyo, JP
185.132.53.24 AS211507 Julian Achter 0.36ms from Amsterdam, NL
87.183.189.40 AS3320 Deutsche Telekom AG 6.33ms from Berlin, DE
81.79.224.120 AS5378 Vodafone Limited 2.79ms from Edinburgh, GB
84.180.104.56 AS3320 Deutsche Telekom AG 6.30ms from Frankfurt am Main, DE
189.179.17.184 AS8151 UNINET 11.59ms from Guadalajara, MX

Traceroute

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

$
traceroute -a -n -q1 -f5 50.21.204.39
traceroute to 50.21.204.39 (50.21.204.39): 64 hops max, 52 byte packets
5 [AS4181] 64.50.241.223 0.635 ms
6 [AS4181] 64.50.244.162 3.101 ms
7 [AS4181] 69.130.31.122 3.106 ms
8 [AS4181] 50.21.204.39 9.091 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.

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