121.55.152.0/21

AS9781  ·  GREEN CABLE TELEVISION STATION

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Summary

Country South Korea
Domain gcs.co.kr
ASN AS9781
Parent Range 121.55.128.0/18
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

Overlapping Ranges

BGP prefixes that contain 121.55.152.0/21

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

Pingable IPs

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

IP Address ASN Details
121.55.158.255 AS9781 GREEN CABLE TELEVISION STATION 5.91ms from Seoul, KR
121.55.159.1 AS9781 GREEN CABLE TELEVISION STATION 5.63ms from Seoul, KR
121.55.154.0 AS9781 GREEN CABLE TELEVISION STATION 5.61ms from Seoul, KR
121.55.152.0 AS9781 GREEN CABLE TELEVISION STATION 6.18ms from Seoul, KR
121.55.157.0 AS9781 GREEN CABLE TELEVISION STATION 6.04ms from Seoul, KR
121.55.153.1 AS9781 GREEN CABLE TELEVISION STATION 5.90ms from Seoul, KR
121.55.155.255 AS9781 GREEN CABLE TELEVISION STATION 5.74ms from Seoul, KR
121.55.156.255 AS9781 GREEN CABLE TELEVISION STATION 5.51ms 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
67.204.14.149 AS13876 FiberLight, LLC 0.30ms from Atlanta, US
174.0.199.21 AS6327 Shaw Communications 4.61ms from Calgary, CA
65.114.64.21 AS209 CenturyLink Communications, LLC 1.89ms from Chicago, US
27.252.104.21 AS9500 One New Zealand Group Limited 7.44ms from Christchurch, NZ
98.29.73.149 AS10796 Charter Communications Inc 8.97ms from Columbus, US
176.88.192.213 AS34984 Superonline Iletisim Hizmetleri A.S. 1.18ms from Istanbul, TR
114.110.19.101 AS38769 PT. Bit Technology Nusantara 0.67ms from Jakarta, ID
3.217.14.5 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
12.71.105.21 AS7018 AT&T Enterprises, LLC 3.70ms from San Jose, US
189.149.30.181 AS8151 UNINET 5.09ms from Santiago de Queretaro, MX
47.233.107.117 AS20115 Charter Communications LLC 4.65ms from St. Louis, US
164.70.100.5 AS2514 NTT PC Communications, Inc. 0.81ms from Tokyo, JP
66.234.58.21 AS21949 Beanfield Technologies Inc. 0.61ms from Toronto, CA
197.25.182.5 AS37671 3S INF 1.52ms from Tunis, TN
77.55.220.117 AS15967 Nazwa.pl Sp.z.o.o. 0.61ms from Warsaw, PL
152.22.109.21 AS81 MCNC 10.25ms from Ashburn, US
134.202.5.53 AS54103 MOD Mission Critical, LLC 0.22ms from Atlanta, US
108.84.125.197 AS7018 AT&T Enterprises, LLC 19.16ms from Atlanta, US
182.73.113.181 AS9498 BHARTI Airtel Ltd. 0.95ms from Bengaluru, IN
51.116.24.213 AS8075 Microsoft Corporation 0.97ms from Berlin, DE
189.42.196.37 AS4230 CLARO S.A. 2.83ms from Brasilia, BR
200.25.97.117 AS7195 EDGEUNO S.A.S 0.14ms from Buenos Aires, AR
193.108.101.117 AS204764 INTERNATIONAL BUSINESS MACHINES CORPORATION 1.26ms from Frankfurt am Main, DE
46.223.39.101 AS3209 Vodafone GmbH 8.67ms from Frankfurt am Main, DE
114.107.240.133 AS140527 China Telecom 6.23ms from Huai'an, CN

Traceroute

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

$
traceroute -a -n -q1 121.55.154.34
traceroute to 121.55.154.34 (121.55.154.34): 64 hops max, 52 byte packets
1 [AS15169] 64.233.174.23 85.851 ms
2 *
3 *
4 *
5 *
6 [AS9318] 116.120.104.86 147.637 ms
7 [AS9781] 121.55.64.101 148.466 ms
8 [AS9781] 121.55.154.34 131.382 ms
Measurement taken from IPinfo ProbeNet in Mumbai, IN
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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