121.55.120.0/21

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
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

1,018 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.55.125.1	AS9781 GREEN CABLE TELEVISION STATION	`5.64ms` from Seoul, KR
121.55.121.0	AS9781 GREEN CABLE TELEVISION STATION	`6.11ms` from Seoul, KR
121.55.122.0	AS9781 GREEN CABLE TELEVISION STATION	`5.50ms` from Seoul, KR
121.55.120.1	AS9781 GREEN CABLE TELEVISION STATION	`5.93ms` from Seoul, KR
121.55.124.255	AS9781 GREEN CABLE TELEVISION STATION	`5.44ms` from Seoul, KR
121.55.127.1	AS9781 GREEN CABLE TELEVISION STATION	`5.60ms` from Seoul, KR
121.55.126.255	AS9781 GREEN CABLE TELEVISION STATION	`5.95ms` from Seoul, KR
121.55.123.255	AS9781 GREEN CABLE TELEVISION STATION	`5.41ms` 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
182.69.129.37	AS24560 Bharti Airtel Ltd., Telemedia Services	`3.69ms` from Delhi, IN
115.124.47.21	AS58765 B TEL INTERNET PRIVATE LIMITED	`11.27ms` from Dhaka, BD
82.206.141.133	AS22351 INTELSAT GLOBAL SERVICE CORPORATION	`2.95ms` from Frankfurt am Main, DE
93.254.160.165	AS3320 Deutsche Telekom AG	`11.61ms` from Frankfurt am Main, DE
151.177.151.213	AS1257 Tele2 Sverige AB	`1.25ms` from Goeteborg, SE
217.31.237.197	AS15897 Vodafone Telekomunikasyon A.S.	`2.98ms` from Istanbul, TR
31.52.182.197	AS2856 British Telecommunications PLC	`7.36ms` from London, GB
218.4.207.133	AS4134 CHINANET-BACKBONE	`4.02ms` from Nanjing, CN
38.125.242.197	AS22301 RingSquared CC	`6.63ms` from New York City, US
159.8.65.85	AS36351 IBM Cloud	`0.73ms` from Paris, FR
39.66.84.53	AS4837 CHINA UNICOM China169 Backbone	`6.51ms` from Qingdao, CN
94.30.210.213	AS20910 SIA "BITE Latvija"	`0.54ms` from Riga, LV
144.35.255.213	AS18800 Salt Lake Community College	`0.91ms` from Salt Lake City, US
73.65.241.53	AS7922 Comcast Cable Communications, LLC	`5.72ms` from Salt Lake City, US
69.91.221.101	AS73 University of Washington	`4.93ms` from Seattle, US
68.199.179.181	AS6128 Cablevision Systems Corp.	`8.88ms` from Secaucus, US
14.202.230.181	AS7545 TPG Telecom Limited	`4.13ms` from Sydney, AU
180.56.154.37	AS4713 NTT Communications Corporation	`3.09ms` from Tokyo, JP
70.27.14.181	AS577 Bell Canada	`4.14ms` from Toronto, CA
77.237.119.229	AS12810 A1 Hrvatska d.o.o.	`2.37ms` from Zagreb, HR
195.45.203.149	AS1267 WIND TRE S.P.A.	`17.16ms` from Zuerich, CH
125.63.185.229	AS7474 SingTel Optus Pty Ltd	`0.59ms` from Adelaide, AU
20.127.238.37	AS8075 Microsoft Corporation	`1.02ms` from Ashburn, US
121.91.200.245	AS136907 HUAWEI CLOUDS	`5.63ms` from Bangkok, TH
74.130.135.133	AS10796 Charter Communications Inc	`14.80ms` from Columbus, US

Traceroute

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

traceroute -a -n -q1 121.55.122.221

traceroute to 121.55.122.221 (121.55.122.221): 64 hops max, 52 byte packets

1 [AS52423] 143.202.162.129 0.602 ms

2 *

3 [AS52263] 177.93.31.65 1.67 ms

4 *

5 [AS9781] 121.55.122.221 264.929 ms

Measurement taken from

IPinfo ProbeNet in San Pedro, CR

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.

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