210.121.0.0/21

AS45374 · CCS

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Summary

Country	South Korea
Domain	ccsdirect.net
ASN	AS45374
Parent Range	210.121.0.0/17
Registry	KRNIC
ID	210.121.0.0-210.121.15.255

WHOIS Details

inetnum:            210.121.0.0 - 210.121.15.255
descr:              CCS
network-type:       CUSTOMER
address:            Yongsan-dong Chungju-si Chungcheongbuk-do
zip-code:           27399
created:            2003-09-06
admin:              GENERATED-KRNIC-IP-MANAGER-HANGK21
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-HANGK21
person:             IP Manager
name:               IP Manager
phone:              +82-43-850-7059
e-mail:             [email protected]
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 210.121.0.0/21

Range	ASN	Company	Num of IPs
210.121.0.0/17	AS45374	SEJONG NETWORKS	32,768
210.121.0.0/17	AS9848	SEJONG NETWORKS	32,768

Nearby Ranges

BGP prefixes that overlap with 210.121.0.0/16

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.0.0/17	AS45374	SEJONG NETWORKS	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.0.0/17	AS9848	SEJONG NETWORKS	32,768

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
210.121.4.108	AS45374 CCS	`4.64ms` from Seoul, KR
210.121.6.19	AS45374 CCS	`4.51ms` from Seoul, KR
210.121.7.1	AS45374 CCS	`4.41ms` from Seoul, KR
210.121.1.86	AS45374 CCS	`4.68ms` from Seoul, KR
210.121.5.60	AS45374 CCS	`4.27ms` from Seoul, KR
210.121.2.1	AS45374 CCS	`5.16ms` from Seoul, KR
210.121.3.64	AS45374 CCS	`4.13ms` 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
87.195.148.37	AS12414 Solcon Internetdiensten B.V.	`4.54ms` from Amsterdam, NL
77.183.103.149	AS6805 Telefonica Germany GmbH & Co.OHG	`2.86ms` from Berlin, DE
102.54.235.101	AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.27ms` from Casablanca, MA
91.26.135.85	AS3320 Deutsche Telekom AG	`0.82ms` from Frankfurt am Main, DE
222.77.144.149	AS4134 CHINANET-BACKBONE	`10.76ms` from Fuzhou, CN
222.175.251.229	AS4134 CHINANET-BACKBONE	`5.54ms` from Jinan, CN
64.251.15.37	AS15083 Infolink Global Corporation	`0.57ms` from Miami, US
98.59.122.213	AS7922 Comcast Cable Communications, LLC	`3.48ms` from Minneapolis, US
13.204.8.37	AS16509 Amazon.com, Inc.	`0.17ms` from Mumbai, IN
112.148.108.69	AS17858 LG POWERCOMM	`1.89ms` from Seoul, KR
35.230.232.5	AS396982 Google LLC	`0.07ms` from Seoul, KR
20.167.25.5	AS8075 Microsoft Corporation	`0.71ms` from Sydney, AU
183.182.67.5	AS55547 WOODSNET-PH	`0.66ms` from Taipei, TW
183.201.242.21	AS132510 IDC ShanXi China Mobile communications corporation	`2.96ms` from Taiyuan, CN
153.171.134.229	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.54ms` from Tokyo, JP
104.27.20.181	AS13335 Cloudflare, Inc.	`0.11ms` from Wrocław, PL
196.131.139.101	AS24835 Vodafone Data	`13.82ms` from Cairo, EG
14.142.187.229	AS4755 TATA Communications formerly VSNL is Leading ISP	`0.41ms` from Delhi, IN
75.148.213.181	AS7922 Comcast Cable Communications, LLC	`8.61ms` from Houston, US
203.138.220.101	AS2514 NTT PC Communications, Inc.	`3.07ms` from Osaka, JP
179.82.154.197	AS26599 TELEFÔNICA BRASIL S.A	`14.76ms` from Osasco, BR
39.64.115.69	AS4837 CHINA UNICOM China169 Backbone	`6.12ms` from Qingdao, CN
124.54.84.5	AS17858 LG POWERCOMM	`5.61ms` from Seoul, KR
158.247.225.117	AS20473 The Constant Company, LLC	`0.17ms` from Seoul, KR
24.53.229.21	AS35843 Rogers Communications	`3.70ms` from Toronto, CA

Traceroute

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

traceroute -a -n -q1 210.121.1.121

traceroute to 210.121.1.121 (210.121.1.121): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 241.42 ms

2 *

3 [AS9457] 211.61.140.2 275.671 ms

4 [AS45374] 210.124.212.34 275.74 ms

5 *

6 *

7 [AS45374] 210.121.1.121 278.809 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On December 28th 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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