121.55.128.0/21

AS9781 · GREEN CABLE TELEVISION STATION

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	South Korea
Domain	gcs.co.kr
ASN	AS9781
Parent Range	121.55.128.0/18
Registry	KRNIC
ID	121.55.128.0-121.55.128.255

WHOIS Details

inetnum:            121.55.128.0 - 121.55.128.255
descr:              GREEN CABLE TELEVISION STATION
network-type:       INFRA
address:            Daegu Dalseo-gu Dalgubeol-daero 1611
zip-code:           42640
created:            2006-10-02
admin:              GENERATED-KRNIC-IP-MANAGER-YS0964
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-YS0964
person:             IP Manager
name:               IP Manager
phone:              +82-53-551-2009
e-mail:             [email protected]
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 121.55.128.0/21

Range	ASN	Company	Num of IPs
121.55.128.0/18	AS9781	GREEN CABLE TELEVISION STATION	16,384

Nearby Ranges

BGP prefixes that overlap with 121.55.0.0/16

Range	ASN	Company	Num of IPs
121.55.192.0/18	AS3605	Kuentos Communications	16,384
121.55.0.0/18	AS45061	Shanghai Information Network Co.,Ltd.	16,384
121.55.128.0/18	AS9781	GREEN CABLE TELEVISION STATION	16,384
121.55.64.0/18	AS9781	GREEN CABLE TELEVISION STATION	16,384
121.55.192.0/19	AS3605	Kuentos Communications, Inc.	8,192
121.55.224.0/19	AS3605	Kuentos Communications, Inc.	8,192

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

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

IP Address	ASN	Details
121.55.131.0	AS9781 GREEN CABLE TELEVISION STATION	`5.42ms` from Seoul, KR
121.55.129.1	AS9781 GREEN CABLE TELEVISION STATION	`5.46ms` from Seoul, KR
121.55.134.1	AS9781 GREEN CABLE TELEVISION STATION	`5.56ms` from Seoul, KR
121.55.128.255	AS9781 GREEN CABLE TELEVISION STATION	`5.52ms` from Seoul, KR
121.55.132.0	AS9781 GREEN CABLE TELEVISION STATION	`5.16ms` from Seoul, KR
121.55.130.0	AS9781 GREEN CABLE TELEVISION STATION	`5.66ms` from Seoul, KR
121.55.135.1	AS9781 GREEN CABLE TELEVISION STATION	`5.64ms` from Seoul, KR
121.55.133.0	AS9781 GREEN CABLE TELEVISION STATION	`5.45ms` from Seoul, KR

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
130.109.112.229	AS668 United States Department of Defense (DoD)	`0.57ms` from Atlanta, US
113.2.54.101	AS4837 CHINA UNICOM China169 Backbone	`11.81ms` from Changchun, CN
108.240.126.181	AS7018 AT&T Enterprises, LLC	`17.32ms` from Chicago, US
169.48.215.133	AS36351 IBM Cloud	`0.94ms` from Dallas, US
178.203.8.101	AS3209 Vodafone GmbH	`6.58ms` from Frankfurt am Main, DE
174.78.168.5	AS22773 Cox Communications Inc.	`1.84ms` from Los Angeles, US
50.223.58.229	AS7922 Comcast Cable Communications, LLC	`0.59ms` from Los Angeles, US
217.221.199.133	AS8968 BT Italia S.p.A.	`7.23ms` from Milan, IT
45.192.128.5	AS139057 Edgenext Legend Dynasty Pte. Ltd.	`0.47ms` from Moscow, RU
108.190.75.37	AS33363 Charter Communications, Inc	`8.47ms` from Orlando, US
101.141.43.5	AS17511 OPTAGE Inc.	`2.23ms` from Osaka, JP
126.109.186.149	AS17676 SoftBank Corp.	`7.62ms` from Osaka, JP
119.179.42.5	AS4837 CHINA UNICOM China169 Backbone	`7.20ms` from Qingdao, CN
141.96.5.213	AS25367 Proximus Luxembourg S.A.	`7.50ms` from Roubaix, FR
161.0.33.181	AS25607 IBW Communications	`12.87ms` from San Pedro Sula, HN
161.153.201.165	AS31898 Oracle Corporation	`0.19ms` from Santiago, CL
118.25.197.85	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.28ms` from Shanghai, CN
218.1.202.69	AS4812 China Telecom (Group)	`4.26ms` from Shanghai, CN
84.117.103.181	AS12302 Vodafone Romania S.A.	`10.61ms` from Timisoara, RO
118.153.241.213	AS2516 KDDI CORPORATION	`2.32ms` from Tokyo, JP
114.166.229.181	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.23ms` from Tokyo, JP
102.24.5.229	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`11.46ms` from Tunis, TN
213.110.17.85	AS49483 SKAT-Media Ltd.	`6.29ms` from Yekaterinburg, RU
61.50.169.165	AS4808 China Unicom Beijing Province Network	`8.77ms` from Zhangjiakou, CN
65.100.225.165	AS209 CenturyLink Communications, LLC	`1.62ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f4 121.55.131.19

traceroute to 121.55.131.19 (121.55.131.19): 64 hops max, 52 byte packets

4 [AS9848] 211.239.208.139 6.621 ms

5 [AS9848] 203.231.94.198 6.672 ms

6 [AS9781] 121.55.64.250 6.743 ms

7 [AS9781] 121.55.64.100 6.483 ms

8 *

9 *

10 *

11 [AS9781] 121.55.131.19 14.372 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 6th 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.

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

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales