121.55.176.0/20

AS9781 · GREEN CABLE TELEVISION STATION

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Summary

Country	South Korea
Domain	gcs.co.kr
ASN	AS9781
Registry	APNIC
ID	GCS

WHOIS Details

inetnum:        121.55.64.0 - 121.55.191.255
netname:        GCS
descr:          GREEN CABLE TELEVISION STATION
admin-c:        IM706-AP
tech-c:         IM706-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2017-02-02T01:24:38Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-06-15T06:21:49Z
source:         APNIC

person:         IP Manager
address:        Daegu Dalseo-gu Dalgubeol-daero 1611
country:        KR
phone:          +82-53-551-2009
e-mail:         ys0964@gcs.co.kr
nic-hdl:        IM706-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-11-15T08:44:04Z
source:         APNIC

inetnum:        121.55.64.0 - 121.55.191.255
netname:        GCS-KR
descr:          GREEN CABLE TELEVISION STATION
country:        KR
admin-c:        KW472-KR
tech-c:         KD472-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Daegu Dalseo-gu Dalgubeol-daero 1611
address:        gamsamdong
country:        KR
phone:          +82-53-551-2009
e-mail:         ys0964@gcs.co.kr
nic-hdl:        KD472-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Daegu Dalseo-gu Dalgubeol-daero 1611
address:        gamsamdong
country:        KR
phone:          +82-53-551-2009
e-mail:         ys0964@gcs.co.kr
nic-hdl:        KW472-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

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

1,218 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.55.180.89	AS9781 GREEN CABLE TELEVISION STATION	`5.47ms` from Seoul, KR
121.55.191.3	AS9781 GREEN CABLE TELEVISION STATION	`5.35ms` from Seoul, KR
121.55.178.130	AS9781 GREEN CABLE TELEVISION STATION	`5.82ms` from Seoul, KR
121.55.190.200	AS9781 GREEN CABLE TELEVISION STATION	`5.46ms` from Seoul, KR
121.55.183.36	AS9781 GREEN CABLE TELEVISION STATION	`5.96ms` from Seoul, KR
121.55.181.9	AS9781 GREEN CABLE TELEVISION STATION	`5.54ms` from Seoul, KR
121.55.184.33	AS9781 GREEN CABLE TELEVISION STATION	`5.40ms` from Seoul, KR
121.55.188.173	AS9781 GREEN CABLE TELEVISION STATION	`5.45ms` from Seoul, KR
121.55.185.163	AS9781 GREEN CABLE TELEVISION STATION	`5.67ms` from Seoul, KR
121.55.189.91	AS9781 GREEN CABLE TELEVISION STATION	`5.60ms` from Seoul, KR
121.55.177.35	AS9781 GREEN CABLE TELEVISION STATION	`5.83ms` from Seoul, KR
121.55.187.41	AS9781 GREEN CABLE TELEVISION STATION	`5.23ms` from Seoul, KR
121.55.182.22	AS9781 GREEN CABLE TELEVISION STATION	`5.50ms` from Seoul, KR
121.55.186.171	AS9781 GREEN CABLE TELEVISION STATION	`5.80ms` from Seoul, KR
121.55.179.39	AS9781 GREEN CABLE TELEVISION STATION	`5.49ms` 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
101.23.103.180	AS4837 CHINA UNICOM China169 Backbone	`9.57ms` from Beijing, CN
94.132.170.116	AS2860 NOS COMUNICACOES, S.A.	`6.33ms` from Braga, PT
216.220.180.36	AS20130 Depaul University	`1.71ms` from Chicago, US
3.142.58.84	AS16509 Amazon.com, Inc.	`0.74ms` from Columbus, US
40.233.55.84	AS54253 Oracle Corporation	`2.02ms` from Draper, US
187.205.189.36	AS8151 UNINET	`7.44ms` from Guadalajara, MX
116.212.125.4	AS38186 Forewin Telecom Group Limited, ISP at HK	`1.51ms` from Hong Kong, HK
41.100.168.228	AS36947 Telecom Algeria	`16.02ms` from Madrid, ES
124.184.192.132	AS1221 Telstra Limited	`3.95ms` from Melbourne, AU
79.22.120.116	AS3269 Telecom Italia S.p.A.	`5.50ms` from Milan, IT
73.228.131.180	AS7922 Comcast Cable Communications, LLC	`5.15ms` from Minneapolis, US
73.88.190.116	AS7922 Comcast Cable Communications, LLC	`8.89ms` from Murfreesboro, US
78.121.195.68	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`17.03ms` from Paris, FR
96.244.231.36	AS701 Verizon Business	`3.63ms` from Philadelphia, US
35.163.108.116	AS16509 Amazon.com, Inc.	`4.51ms` from Portland, US
4.239.120.4	AS8075 Microsoft Corporation	`0.13ms` from Quebec, CA
182.222.235.228	AS17858 LG POWERCOMM	`2.03ms` from Seoul, KR
144.6.235.212	AS4764 Aussie Broadband	`0.97ms` from Sydney, AU
102.45.107.148	AS8452 TE-AS	`4.39ms` from Cairo, EG
50.31.157.84	AS23352 DEFT.COM	`0.35ms` from Chicago, US
75.196.103.68	AS6167 Verizon Business	`10.31ms` from Chicago, US
68.38.45.116	AS7922 Comcast Cable Communications, LLC	`12.33ms` from Chicago, US
14.241.146.116	AS45899 VNPT Corp	`7.70ms` from Da Nang, VN
68.55.185.164	AS7922 Comcast Cable Communications, LLC	`10.41ms` from Flint, US
93.239.189.116	AS3320 Deutsche Telekom AG	`5.56ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 121.55.187.43

traceroute to 121.55.187.43 (121.55.187.43): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.59 0.071 ms

2 [AS3786] 211.118.152.142 6.431 ms

3 *

4 *

5 *

6 *

7 [AS3786] 1.208.167.94 1.302 ms

8 *

9 [AS3786] 1.208.74.98 5.181 ms

10 [AS3786] 210.207.7.22 5.728 ms

11 [AS9781] 121.55.64.195 5.894 ms

12 *

13 [AS9781] 121.55.187.43 5.843 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On September 11th 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.

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