210.121.0.0/17

AS9848 · SEJONG NETWORKS

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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

5,104 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
210.121.14.13	AS45374 CCS	`4.63ms` from Seoul, KR
210.121.7.1	AS45374 CCS	`4.41ms` from Seoul, KR
210.121.17.1	AS45374 CCS	`7.30ms` from Seoul, KR
210.121.6.19	AS45374 CCS	`4.51ms` from Seoul, KR
210.121.11.1	AS45374 CCS	`4.28ms` from Seoul, KR
210.121.22.139	AS45374 CCS	`4.69ms` from Seoul, KR
210.121.15.19	AS45374 CCS	`5.11ms` from Seoul, KR
210.121.9.243	AS45374 CCS	`5.30ms` from Seoul, KR
210.121.10.144	AS45374 CCS	`4.44ms` from Seoul, KR
210.121.2.1	AS45374 CCS	`5.16ms` from Seoul, KR
210.121.8.7	AS45374 CCS	`4.63ms` from Seoul, KR
210.121.20.195	AS45374 CCS	`4.95ms` from Seoul, KR
210.121.18.1	AS45374 CCS	`4.13ms` from Seoul, KR
210.121.4.108	AS45374 CCS	`4.64ms` from Seoul, KR
210.121.3.64	AS45374 CCS	`4.13ms` from Seoul, KR
210.121.21.152	AS45374 CCS	`4.66ms` 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
210.121.102.1	AS45374 CCS	`4.91ms` from Seoul, KR
210.121.81.165	AS45374 CCS	`4.18ms` from Seoul, KR
210.121.94.20	AS45374 CCS	`4.58ms` from Seoul, KR
210.121.125.171	AS45374 CCS	`4.82ms` from Seoul, KR
210.121.122.144	AS45374 CCS	`3.97ms` from Seoul, KR
210.121.84.1	AS45374 CCS	`4.59ms` from Seoul, KR
210.121.100.1	AS45374 CCS	`5.50ms` 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
74.112.200.17	AS11288 InfraDMS	`2.53ms` from Ashburn, US
76.5.231.1	AS19901 Brightspeed	`3.95ms` from Ashburn, US
98.169.205.1	AS22773 Cox Communications Inc.	`1.83ms` from Ashburn, US
78.87.198.65	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`5.37ms` from Athens, GR
85.214.67.17	AS6724 Strato GmbH	`0.47ms` from Berlin, DE
41.137.120.225	AS36884 Wana Corporate	`4.56ms` from Casablanca, MA
66.56.230.81	AS11426 Charter Communications Inc	`15.38ms` from Charlotte, US
117.139.201.1	AS9808 China Mobile Communications Group Co., Ltd.	`3.36ms` from Chengdu, CN
38.18.239.193	AS174 Cogent Communications, LLC	`0.41ms` from Chicago, US
111.10.191.1	AS9808 China Mobile Communications Group Co., Ltd.	`2.42ms` from Chongqing, CN
201.2.249.1	AS8167 V tal	`8.11ms` from Curitiba, BR
103.152.41.17	AS134294 R P World Telecom Pvt Ltd	`1.98ms` from Delhi, IN
20.233.82.33	AS8075 Microsoft Corporation	`0.92ms` from Dubai, AE
52.213.42.81	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE
84.178.209.177	AS3320 Deutsche Telekom AG	`4.06ms` from Duesseldorf, DE
91.89.62.1	AS3209 Vodafone GmbH	`3.54ms` from Frankfurt am Main, DE
113.98.28.129	AS4134 CHINANET-BACKBONE	`3.12ms` from Guangzhou, CN
171.245.97.145	AS7552 Viettel Group	`2.84ms` from Hanoi, VN
156.233.233.1	AS401701 cognetcloud INC	`0.31ms` from Hong Kong, HK
180.249.148.1	AS7713 PT Telekomunikasi Indonesia	`5.51ms` from Jakarta, ID
111.14.104.129	AS24444 Shandong Mobile Communication Company Limited	`0.72ms` from Jinan, CN
60.235.44.49	AS4134 CHINANET-BACKBONE	`7.94ms` from Jinan, CN
197.89.121.1	AS20011 Dimension Data	`1.12ms` from Johannesburg, ZA
216.169.82.1	AS26253 South Central Communications, Inc.	`9.54ms` from Las Vegas, US
213.91.95.129	AS21107 # BLIC.NET AS peering info	`9.64ms` from Ljubljana, SI

Traceroute

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

traceroute -a -n -q1 210.121.80.158

traceroute to 210.121.80.158 (210.121.80.158): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 145.519 ms

2 *

3 [AS9457] 211.61.135.2 174.878 ms

4 [AS45374] 210.124.212.14 178.792 ms

5 *

6 *

7 [AS45374] 210.121.80.158 183.985 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

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.

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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