203.253.236.0/24

AS1237  ·  KISTI

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Summary

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

WHOIS Details

inetnum:        203.253.236.0 - 203.253.236.255
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:  2025-11-03T07:48:10Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
nic-hdl:        IM702-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2022-01-11T12:18:02Z
source:         APNIC

route:          203.253.236.0/24
origin:         AS1237
descr:          Korea Internet & Security Agency (KISA) Seocho-ro 398, Seocho-gu, Seoul, Korea
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-06-09T05:33:59Z
source:         APNIC

inetnum:        203.253.236.0 - 203.253.236.255
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:         [email protected]
nic-hdl:        IA18-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:         [email protected]
nic-hdl:        IM18-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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 203.253.0.0/16

Range ASN Company Num of IPs
203.253.192.0/19 AS18026 JEJU NATIONAL UNIVERSITY 8,192
203.253.96.0/20 AS1237 KISTI 4,096
203.253.64.0/20 AS9572 Hankuk University of Foreign Studies Computer Center 4,096
203.253.80.0/20 AS9572 Hankuk University of Foreign Studies Computer Center 4,096
203.253.32.0/20 AS4766 KONGJU NATIONAL UNIVERSITY 4,096
203.253.240.0/21 AS9637 Korea Basic Science Institute 2,048
203.253.128.0/22 AS4766 Korea Telecom 1,024
203.253.132.0/23 AS2385 KISTI 512
203.253.134.0/24 AS2385 KISTI 256
203.253.232.0/24 AS17576 National Research Foundation of Korea 256
203.253.135.0/24 AS1237 KISTI 256
203.253.237.0/24 AS9275 Korea Astronomy Observatory 256

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

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
76.150.66.184 AS7922 Comcast Cable Communications, LLC 4.19ms from Chicago, US
20.150.43.168 AS8075 Microsoft Corporation 0.61ms from Des Moines, US
108.136.53.104 AS16509 Amazon.com, Inc. 0.45ms from Jakarta, ID
83.41.117.40 AS3352 TELEFONICA DE ESPANA S.A.U. 10.88ms from Madrid, ES
23.62.104.72 AS16625 Akamai Technologies, Inc. 0.42ms from New York City, US
125.113.227.216 AS4134 CHINANET-BACKBONE 5.38ms from Ningbo, CN
76.137.152.136 AS7922 Comcast Cable Communications, LLC 10.23ms from Santa Clara, US
75.174.122.200 AS209 CenturyLink Communications, LLC 10.99ms from Seattle, US
118.51.8.24 AS4766 Korea Telecom 2.88ms from Seoul, KR
100.42.124.40 AS46518 Cloud Provider USA, LLC. 0.35ms from Boston, US
105.196.207.168 AS24835 Vodafone Data 9.29ms from Cairo, EG
98.16.39.168 AS7029 Windstream Communications LLC 13.53ms from Chicago, US
206.204.117.104 AS5009 REV 13.61ms from Dallas, US
20.108.92.136 AS8075 Microsoft Corporation 0.20ms from London, GB
84.190.69.248 AS3320 Deutsche Telekom AG 6.75ms from Nuernberg, DE
177.72.234.168 AS52892 COPREL TELECOM LTDA 8.75ms from Porto Alegre, BR
112.81.75.88 AS4837 CHINA UNICOM China169 Backbone 4.94ms from Shanghai, CN
118.211.63.184 AS7545 TPG Telecom Limited 5.17ms from Sydney, AU
210.254.17.40 AS4725 SoftBank Corp. 13.12ms from Tokyo, JP
108.142.1.200 AS8075 Microsoft Corporation 0.21ms from Amsterdam, NL
110.255.158.8 AS4837 CHINA UNICOM China169 Backbone 9.01ms from Beijing, CN
197.48.150.216 AS8452 TE-AS 5.89ms from Cairo, EG
76.139.70.56 AS7922 Comcast Cable Communications, LLC 13.79ms from Chicago, US
14.236.228.8 AS45899 VNPT Corp 3.96ms from Da Nang, VN
113.166.84.8 AS45899 VNPT Corp 5.05ms from Da Nang, VN

Traceroute

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

$
traceroute -a -n -q1 -f3 -m11 203.253.236.8
traceroute to 203.253.236.8 (203.253.236.8): 11 hops max, 52 byte packets
3 [] 185.1.192.197 19.629 ms
4 [AS24482] 124.6.32.66 199.155 ms
5 [AS24482] 124.6.32.67 265.173 ms
6 *
7 [AS17579] 134.75.103.121 265.423 ms
8 [AS1237] 134.75.5.102 255.688 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Madrid, ES
On

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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