121.55.128.0/18

AS9781 · GREEN CABLE TELEVISION STATION

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Summary

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

WHOIS Details

inetnum:        121.55.128.0 - 121.55.191.255
netname:        GCS
descr:          GREEN CABLE TELEVISION STATION
country:        KR
admin-c:        IM706-AP
tech-c:         IM706-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T06:34:05Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
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:  2025-09-04T01:00:01Z
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:        121.55.128.0 - 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.
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
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.
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
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.
source:         KRNIC

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
121.55.64.0/18	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

4,345 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.55.166.0	AS9781 GREEN CABLE TELEVISION STATION	`5.94ms` from Seoul, KR
121.55.161.1	AS9781 GREEN CABLE TELEVISION STATION	`5.41ms` from Seoul, KR
121.55.150.255	AS9781 GREEN CABLE TELEVISION STATION	`5.82ms` from Seoul, KR
121.55.190.230	AS9781 GREEN CABLE TELEVISION STATION	`5.72ms` from Seoul, KR
121.55.158.255	AS9781 GREEN CABLE TELEVISION STATION	`5.91ms` from Seoul, KR
121.55.144.0	AS9781 GREEN CABLE TELEVISION STATION	`5.99ms` from Seoul, KR
121.55.170.1	AS9781 GREEN CABLE TELEVISION STATION	`6.08ms` from Seoul, KR
121.55.191.25	AS9781 GREEN CABLE TELEVISION STATION	`5.55ms` from Seoul, KR
121.55.134.0	AS9781 GREEN CABLE TELEVISION STATION	`5.57ms` from Seoul, KR
121.55.174.1	AS9781 GREEN CABLE TELEVISION STATION	`6.25ms` from Seoul, KR
121.55.187.60	AS9781 GREEN CABLE TELEVISION STATION	`5.62ms` from Seoul, KR
121.55.153.1	AS9781 GREEN CABLE TELEVISION STATION	`5.90ms` from Seoul, KR
121.55.175.1	AS9781 GREEN CABLE TELEVISION STATION	`6.86ms` from Seoul, KR
121.55.177.142	AS9781 GREEN CABLE TELEVISION STATION	`6.33ms` from Seoul, KR
121.55.172.0	AS9781 GREEN CABLE TELEVISION STATION	`6.23ms` from Seoul, KR
121.55.173.71	AS9781 GREEN CABLE TELEVISION STATION	`6.20ms` from Seoul, KR
121.55.145.255	AS9781 GREEN CABLE TELEVISION STATION	`5.90ms` from Seoul, KR
121.55.160.0	AS9781 GREEN CABLE TELEVISION STATION	`5.96ms` from Seoul, KR
121.55.179.26	AS9781 GREEN CABLE TELEVISION STATION	`5.79ms` from Seoul, KR
121.55.151.0	AS9781 GREEN CABLE TELEVISION STATION	`6.18ms` from Seoul, KR
121.55.169.255	AS9781 GREEN CABLE TELEVISION STATION	`6.21ms` from Seoul, KR
121.55.132.1	AS9781 GREEN CABLE TELEVISION STATION	`5.83ms` from Seoul, KR
121.55.168.1	AS9781 GREEN CABLE TELEVISION STATION	`5.84ms` from Seoul, KR
121.55.185.141	AS9781 GREEN CABLE TELEVISION STATION	`6.00ms` from Seoul, KR
121.55.129.1	AS9781 GREEN CABLE TELEVISION STATION	`5.44ms` 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
154.246.28.114	AS36947 Telecom Algeria	`13.03ms` from Algiers, DZ
1.89.80.2	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`9.81ms` from Beijing, CN
72.70.52.18	AS701 Verizon Business	`2.04ms` from Boston, US
86.106.168.2	AS31609 SC Teleson SRL	`6.64ms` from Bucharest, RO
87.123.45.162	AS8881 1&1 Versatel GmbH	`5.71ms` from Frankfurt am Main, DE
116.71.118.82	AS17557 Pakistan Telecommunication Company Limited	`6.37ms` from Islamabad, PK
78.129.130.130	AS20860 IOMART CLOUD SERVICES LIMITED	`1.11ms` from London, GB
81.110.105.66	AS5089 Virgin Media Limited	`9.41ms` from London, GB
2.219.92.34	AS5607 Sky UK Limited	`4.70ms` from London, GB
95.250.159.178	AS3269 Telecom Italia S.p.A.	`5.05ms` from Naples, IT
209.222.247.34	AS46841 Fork Networking, LLC	`0.80ms` from Portland, US
96.76.105.50	AS7922 Comcast Cable Communications, LLC	`5.88ms` from Portland, US
76.187.65.114	AS11427 Charter Communications Inc	`4.80ms` from Richardson, US
85.192.133.82	AS12389 PJSC Rostelecom	`14.61ms` from Samara, RU
187.224.238.18	AS8151 UNINET	`3.97ms` from Santiago de Queretaro, MX
119.223.28.2	AS4766 Korea Telecom	`5.46ms` from Seoul, KR
2.69.249.242	AS44034 Hi3G Access AB	`6.79ms` from Stockholm, SE
153.142.235.82	AS4713 NTT DOCOMO BUSINESS,Inc.	`4.46ms` from Tokyo, JP
48.210.5.194	AS8075 Microsoft Corporation	`0.17ms` from Tokyo, JP
62.220.98.2	AS21341 Soroush Rasanheh Company Ltd	`16.79ms` from Yerevan, AM
90.95.19.178	AS8953 Orange Romania S.A.	`1.61ms` from Bucharest, RO
67.141.142.2	AS7029 Windstream Communications LLC	`0.70ms` from Dallas, US
212.53.145.82	AS8893 Artfiles New Media GmbH	`0.51ms` from Hamburg, DE
136.185.214.82	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.71ms` from Hyderabad, IN
60.165.54.178	AS4134 CHINANET-BACKBONE	`2.15ms` from Lanzhou, CN

Traceroute

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

traceroute -a -n -q1 121.55.179.92

traceroute to 121.55.179.92 (121.55.179.92): 64 hops max, 52 byte packets

1 [AS31898] 140.91.230.13 0.071 ms

2 [AS9318] 39.120.201.122 0.546 ms

3 [AS9318] 39.120.201.121 3.213 ms

4 *

5 *

6 *

7 [AS9318] 116.120.104.82 7.988 ms

8 [AS9781] 121.55.64.210 8.269 ms

9 *

10 [AS9781] 121.55.179.92 8.122 ms

Measurement taken from

IPinfo ProbeNet in Chuncheon, KR

On November 15th 2025

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