203.240.221.0/24

AS4670 · Shinbiro

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS4670
Parent Range	203.240.192.0/18
Registry	KRNIC
ID	203.240.221.0-203.240.221.255

WHOIS Details

inetnum:            203.240.221.0 - 203.240.221.255
descr:              SEJONG NETWORKS
network-type:       INFRA
address:            12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
zip-code:           13840
created:            1995-10-26
admin:              GENERATED-KRNIC-IP-MANAGER-IP
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-IP
person:             IP Manager
name:               IP Manager
phone:              +82-2-3281-3453
e-mail:             ip@haion.net
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 203.240.221.0/24

Range	ASN	Company	Num of IPs
203.240.192.0/18	AS4670	SEJONG NETWORKS	16,384

Nearby Ranges

BGP prefixes that overlap with 203.240.0.0/16

Range	ASN	Company	Num of IPs
203.240.192.0/18	AS4670	SEJONG NETWORKS	16,384
203.240.128.0/19	AS4670	SEJONG NETWORKS	8,192
203.240.128.0/19	AS9848	SEJONG NETWORKS	8,192
203.240.238.0/23	AS4670	SEJONG NETWORKS	512
203.240.209.0/24	AS4670	SEJONG NETWORKS	256
203.240.222.0/24	AS4670	SEJONG NETWORKS	256
203.240.234.0/24	AS4670	SEJONG NETWORKS	256
203.240.235.0/24	AS4670	SEJONG NETWORKS	256
203.240.236.0/24	AS4670	SEJONG NETWORKS	256
203.240.253.0/24	AS4670	SEJONG NETWORKS	256
203.240.128.0/24	AS9645	HYUNDAI International Merchant Bank	256
203.240.132.0/24	AS9848	SEJONG NETWORKS	256
203.240.148.0/24	AS9848	SEJONG NETWORKS	256
203.240.244.0/24	AS9848	SEJONG NETWORKS	256
203.240.191.0/24	AS3786	Korea Internet Security Agency	256
203.240.159.0/24	AS9980	Hyundai Information Technology Co. Ltd.	256
203.240.149.0/24	AS45977	Canon Korea Business Solution	256
203.240.193.0/24	AS4670	SEJONG NETWORKS	256
203.240.208.0/24	AS4670	SEJONG NETWORKS	256

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

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

IP Address	ASN	Details
203.240.221.157	AS4670 Shinbiro	`1.13ms` 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
44.203.73.88	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
141.148.51.248	AS31898 Oracle Corporation	`0.34ms` from Ashburn, US
154.57.12.200	AS200736 MEDIANET INVEST AE	`0.90ms` from Athens, GR
45.30.36.72	AS7018 AT&T Enterprises, LLC	`12.68ms` from Atlanta, US
31.59.194.104	AS48678 PENTECH BILISIM TEKNOLOJILERI SANAYI VE TICARET LIMITED SIRKETi	`0.16ms` from Bursa, TR
206.255.7.120	AS53508 Cablelynx	`13.70ms` from Houston, US
136.165.254.248	AS1657 University of Louisville	`4.97ms` from Indianapolis, US
16.79.28.120	AS16509 Amazon.com, Inc.	`0.44ms` from Jakarta, ID
121.138.128.216	AS4766 Korea Telecom	`1.24ms` from Seoul, KR
143.198.86.56	AS14061 DigitalOcean, LLC	`0.21ms` from Singapore, SG
167.103.57.216	AS53813 ZSCALER, INC.	`0.61ms` from Singapore, SG
219.89.66.184	AS4771 Spark New Zealand Trading Ltd.	`9.93ms` from Auckland, NZ
116.181.3.248	AS133119 China Unicom IP network	`3.99ms` from Beijing, CN
96.178.85.184	AS36377 Comcast Cable Communications, LLC	`0.93ms` from Chicago, US
109.185.114.200	AS8926 Moldtelecom SA	`1.72ms` from Chisinau, MD
35.184.151.248	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
186.101.229.152	AS27947 Telconet S.A	`1.17ms` from Guayaquil, EC
72.182.50.184	AS11427 Charter Communications Inc	`10.01ms` from Houston, US
85.43.33.232	AS3269 Telecom Italia S.p.A.	`4.73ms` from Milan, IT
37.78.200.88	AS12389 PJSC Rostelecom	`16.45ms` from Moscow, RU
60.176.167.40	AS4134 CHINANET-BACKBONE	`5.60ms` from Ningbo, CN
150.112.68.248	AS36351 IBM Cloud	`0.86ms` from Paris, FR
95.54.61.8	AS12389 PJSC Rostelecom	`2.23ms` from Saint Petersburg, RU
103.107.56.152	AS16509 Amazon.com, Inc.	`0.27ms` from Singapore, SG
13.158.123.104	AS16509 Amazon.com, Inc.	`0.22ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f3 203.240.221.99

traceroute to 203.240.221.99 (203.240.221.99): 64 hops max, 52 byte packets

3 [AS23764] 5.154.154.229 9.23 ms

4 *

5 *

6 *

7 [AS9848] 211.239.201.162 232.318 ms

8 [AS9848] 211.239.201.182 234.378 ms

9 [AS9848] 211.115.199.30 233.828 ms

10 [AS4670] 61.110.9.1 237.757 ms

11 *

12 [AS4670] 203.240.221.99 263.653 ms

Measurement taken from

IPinfo ProbeNet in Luxembourg, LU

On March 13th 2026

What are IP address ranges?

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