121.55.144.0/21

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	KRNIC
ID	121.55.144.0-121.55.144.255

WHOIS Details

inetnum:            121.55.144.0 - 121.55.144.255
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 121.55.144.0/21

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

1,148 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.55.149.0	AS9781 GREEN CABLE TELEVISION STATION	`5.67ms` from Seoul, KR
121.55.145.255	AS9781 GREEN CABLE TELEVISION STATION	`6.02ms` from Seoul, KR
121.55.147.0	AS9781 GREEN CABLE TELEVISION STATION	`5.86ms` from Seoul, KR
121.55.146.0	AS9781 GREEN CABLE TELEVISION STATION	`5.54ms` from Seoul, KR
121.55.150.255	AS9781 GREEN CABLE TELEVISION STATION	`5.89ms` from Seoul, KR
121.55.144.1	AS9781 GREEN CABLE TELEVISION STATION	`6.05ms` from Seoul, KR
121.55.151.0	AS9781 GREEN CABLE TELEVISION STATION	`6.23ms` from Seoul, KR
121.55.148.114	AS9781 GREEN CABLE TELEVISION STATION	`6.00ms` 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
103.98.34.21	AS136688 Datamax Technologiespvt Ltd	`2.69ms` from Chennai, IN
94.127.51.69	AS8368 BENESOL BACKBONE	`0.80ms` from Copenhagen, DK
113.172.66.5	AS45899 VNPT Corp	`1.36ms` from Ho Chi Minh City, VN
103.250.28.85	AS150311 LASERTEL PRIVATE LIMITED	`2.96ms` from Lahore, PK
185.249.121.101	AS20860 IOMART CLOUD SERVICES LIMITED	`1.22ms` from London, GB
31.23.13.149	AS12389 PJSC Rostelecom	`16.95ms` from Moscow, RU
148.77.118.53	AS6128 Cablevision Systems Corp.	`1.67ms` from New York City, US
97.222.21.181	AS6167 Verizon Business	`13.37ms` from New York City, US
100.12.103.101	AS701 Verizon Business	`2.38ms` from New York City, US
52.67.71.181	AS16509 Amazon.com, Inc.	`0.16ms` from Osasco, BR
54.235.54.53	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
89.119.208.245	AS8968 BT Italia S.p.A.	`1.36ms` from Rome, IT
137.26.46.197	AS20115 Charter Communications LLC	`4.61ms` from St. Louis, US
110.3.172.101	AS10013 FreeBit Co.,Ltd.	`19.86ms` from Tokyo, JP
112.137.187.5	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.45ms` from Tokyo, JP
67.1.99.149	AS209 CenturyLink Communications, LLC	`15.47ms` from Albuquerque, US
108.82.200.21	AS7018 AT&T Enterprises, LLC	`6.52ms` from Atlanta, US
202.134.19.181	AS45903 CMC Telecom Infrastructure Company	`0.65ms` from Hanoi, VN
78.173.249.181	AS9121 Turk Telekomunikasyon Anonim Sirketi	`2.93ms` from Istanbul, TR
223.237.91.5	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`2.77ms` from Kolkata, IN
192.0.113.101	AS2635 Automattic, Inc	`0.18ms` from Los Angeles, US
86.220.140.165	AS3215 Orange S.A.	`6.70ms` from Marseille, FR
183.207.187.149	AS56046 China Mobile communications corporation	`1.17ms` from Nanjing, CN
95.247.6.53	AS3269 Telecom Italia S.p.A.	`5.13ms` from Naples, IT
125.187.184.165	AS17858 LG POWERCOMM	`1.87ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 121.55.146.0

traceroute to 121.55.146.0 (121.55.146.0): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.111 ms

2 [AS3786] 182.162.208.37 0.712 ms

3 *

4 [AS3786] 211.233.95.49 1.411 ms

5 *

6 *

7 [AS3786] 182.162.36.1 2.73 ms

8 [AS3786] 1.208.104.225 1.036 ms

9 *

10 *

11 *

12 *

13 [AS9781] 121.55.146.0 5.893 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 20th 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.

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