203.250.192.0/18

AS1237 · KISTI

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Summary

Country	South Korea
Domain	kreonet.net
ASN	AS1237
Registry	APNIC
ID	KREONET

WHOIS Details

inetnum:        203.250.128.0 - 203.250.255.255
netname:        KREONet
descr:          KISTI
country:        KR
admin-c:        IM702-AP
tech-c:         IM702-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T07:48:08Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
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:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Daejeon Yuseong-gu Daehak-ro 245
country:        KR
phone:          +82-42-869-0707
e-mail:         noc@kreonet.net
nic-hdl:        IM702-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2022-01-11T12:18:02Z
source:         APNIC

inetnum:        203.250.128.0 - 203.250.255.255
netname:        KREONet-KR
descr:          KISTI
country:        KR
admin-c:        IA18-KR
tech-c:         IM18-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Daejeon Yuseong-gu Daehak-ro 245
address:        KISTI
country:        KR
phone:          +82-42-869-0707
e-mail:         noc@kreonet.net
nic-hdl:        IA18-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Daejeon Yuseong-gu Daehak-ro 245
address:        KISTI
country:        KR
phone:          +82-42-869-0707
e-mail:         noc@kreonet.net
nic-hdl:        IM18-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 203.250.0.0/16

Range	ASN	Company	Num of IPs
203.250.0.0/19	AS1237	KISTI	8,192
203.250.120.0/21	AS9708	Pukyong National University	2,048
203.250.160.0/21	AS1237	KISTI	2,048
203.250.188.0/22	AS9982	Pai Chai University	1,024
203.250.168.0/22	AS17595	Korea Institute of Nuclear Safety	1,024
203.250.148.0/23	AS9769	Sejong University	512
203.250.111.0/24	AS55589	Korea Institute of Industrial Technology	256
203.250.183.0/24	AS1237	KRISO	256
203.250.182.0/24	AS1237	KRISO	256

Hosted domains

There are 59 domain names hosted across 30 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.250.218.54	scienceon.info	7
203.250.218.56	koar.kr	7
203.250.218.77	kesli.net	6
203.250.198.114	jast.kr	5
203.250.215.81	ndsl.pe.kr	5
203.250.218.61	jbees.or.kr	3
203.250.215.56	doi.or.kr	2
203.250.215.48	xn--2e0bz9u5mj.kr	2
203.250.198.112	iksfc.or.kr	2
203.250.198.116	e-star.or.kr	2
203.250.218.22	koreascience.or.kr	2
203.250.216.136	epops.kr	2
203.250.241.37	kpea.or.kr	1
203.250.217.95	smartk2c.or.kr	1
203.250.216.95	smartk2c.or.kr	1
203.250.215.49	kisti.re.kr	1
203.250.218.86	starvalue.or.kr	1
203.250.213.32	eliahdb.org	1
203.250.218.76	nktech.net	1
203.250.216.173	busansti.net	1

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

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

IP Address	ASN	Details
203.250.196.12	AS1237 KISTI	`3.10ms` from Seoul, KR
203.250.213.61	AS1237 KISTI	`3.12ms` from Seoul, KR
203.250.218.57	AS1237 KISTI	`23.18ms` from Seoul, KR
203.250.203.160	AS1237 KISTI	`4.37ms` from Seoul, KR
203.250.200.1	AS1237 KISTI	`6.57ms` from Seoul, KR
203.250.237.121	AS1237 KISTI	`23.75ms` from Seoul, KR
203.250.197.12	AS1237 KISTI	`3.09ms` from Seoul, KR
203.250.233.81	AS1237 KISTI	`2.87ms` from Seoul, KR
203.250.216.149	AS1237 KISTI	`3.21ms` from Seoul, KR
203.250.215.77	AS1237 KISTI	`23.14ms` from Seoul, KR
203.250.207.16	AS1237 KISTI	`23.43ms` from Seoul, KR
203.250.248.74	AS1237 KISTI	`6.26ms` from Seoul, KR
203.250.217.149	AS1237 KISTI	`3.16ms` from Seoul, KR
203.250.241.40	AS1237 KISTI	`23.18ms` from Seoul, KR
203.250.214.61	AS1237 KISTI	`3.15ms` from Seoul, KR
203.250.202.124	AS1237 KISTI	`4.77ms` from Seoul, KR
203.250.240.153	AS1237 KISTI	`3.08ms` from Seoul, KR
203.250.198.22	AS1237 KISTI	`3.19ms` from Seoul, KR
203.250.224.10	AS1237 KISTI	`3.25ms` 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
92.71.199.146	AS1136 KPN B.V.	`3.03ms` from Amsterdam, NL
105.26.64.18	AS37100 SEACOM Limited	`0.47ms` from Amsterdam, NL
52.24.116.226	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
186.213.221.98	AS18881 TELEFÔNICA BRASIL S.A	`3.40ms` from Brasilia, BR
200.253.16.114	AS4230 CLARO S.A.	`3.34ms` from Brasilia, BR
18.221.96.98	AS16509 Amazon.com, Inc.	`0.13ms` from Columbus, US
34.70.20.34	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
38.67.11.82	AS174 Cogent Communications, LLC	`0.09ms` from Dallas, US
146.88.106.178	AS33070 Rackspace Hosting	`0.91ms` from Dallas, US
3.77.78.130	AS16509 Amazon.com, Inc.	`0.12ms` from Frankfurt am Main, DE
213.30.253.162	AS8881 1&1 Versatel GmbH	`3.13ms` from Frankfurt am Main, DE
195.15.226.2	AS29222 Infomaniak Network SA	`0.67ms` from Geneve, CH
97.78.24.114	AS33363 Charter Communications, Inc	`9.96ms` from Los Angeles, US
80.17.104.2	AS3269 Telecom Italia S.p.A.	`5.19ms` from Milan, IT
14.10.162.162	AS2516 KDDI CORPORATION	`3.05ms` from Osaka, JP
62.145.187.34	AS13170 Kaisanet Oy	`2.81ms` from Oulu, FI
3.220.72.18	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
165.225.46.2	AS22616 ZSCALER, INC.	`0.94ms` from San Jose, US
211.223.81.178	AS4766 Korea Telecom	`6.65ms` from Seoul, KR
197.11.178.2	AS328880 STE INTERNET SMART SOLUTIONS	`1.88ms` from Tunis, TN
111.170.23.34	AS151185 China Telecom	`5.17ms` from Wuhan, CN
109.191.94.34	AS8369 Intersvyaz-2 JSC	`3.62ms` from Yekaterinburg, RU
216.145.65.2	AS22792 MOUNTAINET	`12.42ms` from Ashburn, US
212.121.149.226	AS8220 COLT Technology Services Group Limited	`1.62ms` from Berlin, DE
54.71.20.178	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US

Traceroute

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

traceroute -a -n -q1 -m11 203.250.245.87

traceroute to 203.250.245.87 (203.250.245.87): 11 hops max, 52 byte packets

1 [AS15169] 108.170.235.191 248.826 ms

2 *

3 *

4 [AS17579] 134.75.103.121 272.045 ms

5 [AS1237] 134.75.8.30 278.04 ms

6 [AS1237] 203.250.174.131 281.011 ms

7 [AS1237] 203.250.174.129 274.131 ms

8 [AS1237] 203.250.174.131 281.759 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Milan, IT

On January 9th 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.

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