210.121.106.0/24

AS45374 · CCS

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS45374
Parent Range	210.121.0.0/17
Registry	APNIC
ID	SHINBIRO

WHOIS Details

inetnum:        210.121.0.0 - 210.121.127.255
netname:        SEJONG
descr:          SEJONG NETWORKS
country:        KR
admin-c:        IM686-AP
tech-c:         IM686-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2024-09-10T08:50:08Z
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:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IM686-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-09-10T08:42:02Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.121.106.0/24

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

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

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Pingable IPs

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

IP Address	ASN	Details
210.121.106.114	AS45374 CCS	`4.58ms` 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
139.213.39.200	AS4837 CHINA UNICOM China169 Backbone	`3.68ms` from Changchun, CN
103.197.33.88	AS134260 ZERONE Networks pvt ltd	`9.60ms` from Chennai, IN
5.100.10.136	AS28876 suec // dacor GmbH	`3.73ms` from Frankfurt am Main, DE
187.246.238.200	AS13999 Mega Cable, S.A. de C.V.	`1.29ms` from Guadalajara, MX
58.77.224.232	AS3786 LG DACOM Corporation	`1.77ms` from Incheon, KR
73.88.189.56	AS7922 Comcast Cable Communications, LLC	`7.16ms` from Murfreesboro, US
180.214.229.168	AS10000 Nagasaki Cable Media Inc.	`9.14ms` from Osaka, JP
125.149.21.136	AS4766 Korea Telecom	`2.76ms` from Seoul, KR
182.19.171.104	AS55430 Starhub Ltd	`1.13ms` from Singapore, SG
54.84.147.56	AS14618 Amazon.com, Inc.	`0.51ms` from Ashburn, US
181.71.129.200	AS27831 Colombia Móvil	`11.85ms` from Bogota, CO
94.44.80.8	AS21334 One Hungary Ltd.	`14.71ms` from Budapest, HU
24.64.97.56	AS6327 Shaw Communications	`4.49ms` from Calgary, CA
187.62.116.56	AS270245 Master Serviços de Comunicação Multimidia LTDA	`2.67ms` from Curitiba, BR
86.243.181.216	AS3215 Orange S.A.	`6.66ms` from Frankfurt am Main, DE
79.206.46.120	AS3320 Deutsche Telekom AG	`6.78ms` from Frankfurt am Main, DE
166.67.209.104	AS7046 Verizon Business	`9.88ms` from Herndon, US
117.111.170.88	AS9316 DACOM-PUBNETPLUS	`2.25ms` from Incheon, KR
185.40.101.120	AS39405 Eurofiber France SAS	`5.79ms` from Marseille, FR
212.239.37.8	AS3313 BT Italia S.p.A.	`1.34ms` from Milan, IT
113.155.112.216	AS18126 Chubu Telecommunications Company, Inc.	`4.06ms` from Osaka, JP
157.22.69.8	AS44559 IT HOSTLINE LTD	`0.21ms` from Sao Paulo, BR
207.23.200.136	AS11105 Simon Fraser University	`5.93ms` from Seattle, US
51.20.131.104	AS16509 Amazon.com, Inc.	`0.13ms` from Stockholm, SE
200.217.147.232	AS7738 V tal	`2.08ms` from São Paulo, BR

Traceroute

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

traceroute -a -n -q1 210.121.106.143

traceroute to 210.121.106.143 (210.121.106.143): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 249.119 ms

2 *

3 [AS9457] 211.61.135.2 270.379 ms

4 [AS45374] 210.124.212.30 280.699 ms

5 *

6 *

7 *

8 [AS45374] 210.121.106.143 282.229 ms

Measurement taken from

IPinfo ProbeNet in Berlin, DE

On March 13th 2026

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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