210.121.0.0/17

AS9848 · SEJONG NETWORKS

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS9848
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

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
210.121.128.0/17	AS4766	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

4,920 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
210.121.20.171	AS45374 CCS	`4.56ms` from Incheon, KR
210.121.87.74	AS45374 CCS	`10.73ms` from Seoul, KR
210.121.11.143	AS45374 CCS	`4.23ms` from Seoul, KR
210.121.14.150	AS45374 CCS	`3.88ms` from Seoul, KR
210.121.92.1	AS45374 CCS	`4.87ms` from Seoul, KR
210.121.103.23	AS45374 CCS	`3.60ms` from Seoul, KR
210.121.7.23	AS45374 CCS	`4.34ms` from Seoul, KR
210.121.90.74	AS45374 CCS	`4.50ms` from Incheon, KR
210.121.123.21	AS45374 CCS	`3.90ms` from Incheon, KR
210.121.83.30	AS45374 CCS	`4.54ms` from Seoul, KR
210.121.109.45	AS45374 CCS	`4.24ms` from Seoul, KR
210.121.94.80	AS45374 CCS	`3.85ms` from Seoul, KR
210.121.36.2	AS9848 SEJONG NETWORKS	`0.78ms` from Seoul, KR
210.121.111.3	AS45374 CCS	`5.08ms` from Incheon, KR
210.121.6.19	AS45374 CCS	`3.70ms` from Seoul, KR
210.121.89.1	AS45374 CCS	`4.37ms` from Seoul, KR
210.121.79.75	AS45374 CCS	`4.12ms` from Incheon, KR
210.121.72.19	AS45374 CCS	`5.12ms` from Incheon, KR
210.121.122.13	AS45374 CCS	`3.32ms` from Seoul, KR
210.121.102.34	AS45374 CCS	`4.70ms` from Incheon, KR
210.121.86.242	AS45374 CCS	`9.64ms` from Seoul, KR
210.121.108.37	AS45374 CCS	`4.52ms` from Seoul, KR
210.121.96.1	AS45374 CCS	`4.59ms` from Seoul, KR
210.121.8.9	AS45374 CCS	`4.80ms` from Seoul, KR
210.121.3.34	AS45374 CCS	`3.71ms` 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
38.21.253.1	AS15153 StarVision, Inc.	`13.90ms` from Ashburn, US
98.174.214.17	AS22773 Cox Communications Inc.	`5.88ms` from Ashburn, US
73.251.113.1	AS7922 Comcast Cable Communications, LLC	`3.65ms` from Ashburn, US
76.106.0.1	AS7922 Comcast Cable Communications, LLC	`5.60ms` from Ashburn, US
96.27.129.1	AS12083 WideOpenWest Finance LLC	`9.95ms` from Atlanta, US
208.161.168.1	AS19901 Brightspeed	`8.80ms` from Atlanta, US
47.39.196.1	AS20115 Charter Communications LLC	`2.98ms` from Atlanta, US
129.66.113.65	AS3464 Alabama Supercomputer Authority	`7.25ms` from Atlanta, US
106.12.171.129	AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd.	`3.39ms` from Beijing, CN
49.233.6.225	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.07ms` from Beijing, CN
112.250.90.1	AS4837 CHINA UNICOM China169 Backbone	`14.33ms` from Beijing, CN
181.52.44.1	AS10620 Telmex Colombia S.A.	`9.03ms` from Bogota, CO
146.115.176.1	AS6079 RCN	`2.54ms` from Boston, US
108.26.203.1	AS701 Verizon Business	`1.21ms` from Boston, US
200.253.83.177	AS4230 CLARO S.A.	`0.89ms` from Brasilia, BR
193.121.49.145	AS5432 Proximus NV	`2.52ms` from Brussels, BE
86.122.114.81	AS8708 DIGI ROMANIA S.A.	`3.94ms` from Bucharest, RO
190.189.148.1	AS7303 Telecom Argentina S.A.	`5.94ms` from Buenos Aires, AR
200.127.35.1	AS7303 Telecom Argentina S.A.	`1.05ms` from Buenos Aires, AR
190.192.5.1	AS7303 Telecom Argentina S.A.	`11.72ms` from Buenos Aires, AR
2.104.176.1	AS3292 TDC Holding A/S	`1.89ms` from Copenhagen, DK
186.211.97.129	AS53062 ALT \| GRUPO BRASIL TECPAR	`6.41ms` from Curitiba, BR
72.183.205.113	AS11427 Charter Communications Inc	`3.35ms` from Dallas, US
74.113.61.65	AS31893 H5 Colo Associates LLC	`1.26ms` from Dallas, US
5.147.60.1	AS3209 Vodafone GmbH	`5.89ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 210.121.97.113

traceroute to 210.121.97.113 (210.121.97.113): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 99.678 ms

2 *

3 [AS9457] 211.61.140.2 133.98 ms

4 *

5 *

6 [AS45374] 210.121.97.113 144.325 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On February 7th 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.

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