121.55.80.0/21

AS9781 · GREEN CABLE TELEVISION STATION

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Summary

Country	South Korea
Domain	gcs.co.kr
ASN	AS9781
Parent Range	121.55.64.0/18
Registry	KRNIC
ID	121.55.80.0-121.55.80.255

WHOIS Details

inetnum:            121.55.80.0 - 121.55.80.255
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 121.55.80.0/21

Range	ASN	Company	Num of IPs
121.55.64.0/18	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

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

IP Address	ASN	Details
121.55.84.255	AS9781 GREEN CABLE TELEVISION STATION	`5.87ms` from Seoul, KR
121.55.87.255	AS9781 GREEN CABLE TELEVISION STATION	`5.99ms` from Seoul, KR
121.55.83.1	AS9781 GREEN CABLE TELEVISION STATION	`5.92ms` from Seoul, KR
121.55.85.255	AS9781 GREEN CABLE TELEVISION STATION	`5.34ms` from Seoul, KR
121.55.82.0	AS9781 GREEN CABLE TELEVISION STATION	`5.81ms` from Seoul, KR
121.55.86.0	AS9781 GREEN CABLE TELEVISION STATION	`6.11ms` from Seoul, KR
121.55.81.1	AS9781 GREEN CABLE TELEVISION STATION	`5.86ms` from Seoul, KR
121.55.80.1	AS9781 GREEN CABLE TELEVISION STATION	`5.96ms` 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
80.231.125.21	AS6453 TATA COMMUNICATIONS (AMERICA) INC	`0.29ms` from Frankfurt am Main, DE
183.245.83.21	AS56041 China Mobile communications corporation	`9.15ms` from Hangzhou, CN
183.247.157.5	AS56041 China Mobile communications corporation	`6.03ms` from Hangzhou, CN
82.11.255.229	AS5089 Virgin Media Limited	`4.74ms` from London, GB
75.134.137.21	AS20115 Charter Communications LLC	`14.86ms` from Minneapolis, US
176.209.238.149	AS12389 PJSC Rostelecom	`5.57ms` from Novosibirsk, RU
87.175.162.53	AS3320 Deutsche Telekom AG	`5.59ms` from Nuernberg, DE
27.217.163.245	AS4837 CHINA UNICOM China169 Backbone	`4.63ms` from Qingdao, CN
98.45.85.69	AS7922 Comcast Cable Communications, LLC	`3.35ms` from San Jose, US
121.148.217.101	AS4766 Korea Telecom	`5.55ms` from Seoul, KR
20.24.42.181	AS8075 Microsoft Corporation	`0.65ms` from Singapore, SG
36.232.54.165	AS3462 Data Communication Business Group	`1.95ms` from Taichung, TW
119.245.207.101	AS2514 NTT PC Communications, Inc.	`0.88ms` from Tokyo, JP
220.150.157.5	AS4685 Asahi Net	`8.18ms` from Tokyo, JP
188.23.172.149	AS8447 A1 Telekom Austria AG	`9.95ms` from Vienna, AT
73.214.182.53	AS7922 Comcast Cable Communications, LLC	`10.69ms` from Ashburn, US
108.66.13.85	AS7018 AT&T Enterprises, LLC	`9.40ms` from Atlanta, US
185.195.53.69	AS8462 Tarr Kft.	`7.79ms` from Budapest, HU
23.238.17.229	AS54290 Hostwinds LLC.	`0.24ms` from Dallas, US
14.160.83.85	AS45899 VNPT Corp	`0.89ms` from Hanoi, VN
159.60.150.213	AS35280 F5 Networks SARL	`0.15ms` from Lisbon, PT
46.73.86.37	AS12714 PJSC MegaFon	`2.66ms` from Moscow, RU
154.66.240.37	AS37662 West Indian Ocean Cable Company	`0.32ms` from Nairobi, KE
35.217.133.197	AS19527 Google LLC	`0.10ms` from Osaka, JP
118.18.27.69	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.75ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f5 121.55.83.1

traceroute to 121.55.83.1 (121.55.83.1): 64 hops max, 52 byte packets

5 [AS4637] 210.176.150.116 1.892 ms

6 *

7 *

8 *

9 *

10 [AS9318] 116.120.104.86 6.503 ms

11 [AS9781] 121.55.83.1 6.373 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 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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