1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.233.0.0/16
  4. AS1237  | 203.233.156.0/24

203.233.156.0/24

AS1237  ·  KISTI

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Summary

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

WHOIS Details

inetnum:        203.233.156.0 - 203.233.156.255
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:  2025-11-03T07:48:06Z
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:          203.233.156.0/24
origin:         AS1237
descr:          Korea Internet & Security Agency (KISA) Seocho-ro 398, Seocho-gu, Seoul, Korea
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-06-09T03:07:05Z
source:         APNIC

inetnum:        203.233.156.0 - 203.233.156.255
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 203.233.0.0/16

Range ASN Company Num of IPs
203.233.0.0/17 AS17841 LG DACOM Corporation 32,768
203.233.0.0/17 AS3786 LG DACOM Corporation 32,768
203.233.0.0/17 AS38707 LG DACOM Corporation 32,768
203.233.0.0/17 AS9693 LG DACOM Corporation 32,768
203.233.0.0/17 AS38428 LG DACOM Corporation 32,768
203.233.0.0/17 AS9684 LG DACOM Corporation 32,768
203.233.192.0/19 AS7557 Korea Trade Network 8,192
203.233.224.0/20 AS7557 Korea Trade Network 4,096
203.233.74.0/24 AS38428 LG Uplus 256
203.233.85.0/24 AS9968 Kyobo Life Insurance Co. 256
203.233.43.0/24 AS18295 LG Uplus 256
203.233.44.0/24 AS18295 LG Uplus 256
203.233.9.0/24 AS18373 KOOKMIN BANK 256
203.233.22.0/24 AS23573 LG Uplus 256
203.233.128.0/24 AS3786 Korea Internet Security Agency 256
203.233.165.0/24 AS3786 Korea Internet Security Agency 256
203.233.72.0/24 AS38428 LG Uplus 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
Read more

Pingable IPs

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

IP Address ASN Details
203.233.156.97 AS1237 KISTI 0.92ms 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
94.166.28.248 AS1267 WIND TRE S.P.A. 16.48ms from Frosinone, IT
61.5.26.184 AS7713 PT Telekomunikasi Indonesia 2.00ms from Jakarta, ID
35.215.46.120 AS15169 Google LLC 0.10ms from Montreal, CA
86.206.209.200 AS3215 Orange S.A. 14.23ms from Paris, FR
122.169.73.72 AS24560 Bharti Airtel Ltd., Telemedia Services 2.04ms from Pune, IN
34.95.169.168 AS396982 Google LLC 0.11ms from Sao Paulo, BR
61.98.7.200 AS9318 SK Broadband Co Ltd 1.83ms from Seoul, KR
216.26.242.152 AS200373 3xK Tech GmbH 0.12ms from Toronto, CA
52.20.73.56 AS14618 Amazon.com, Inc. 0.55ms from Ashburn, US
69.134.136.152 AS7843 Charter Communications Inc 14.60ms from Dallas, US
197.101.171.232 AS20011 Dimension Data 2.03ms from Durban, ZA
18.159.252.72 AS16509 Amazon.com, Inc. 0.34ms from Frankfurt am Main, DE
91.1.244.40 AS3320 Deutsche Telekom AG 7.17ms from Frankfurt am Main, DE
1.29.27.24 AS4837 CHINA UNICOM China169 Backbone 13.08ms from Harbin, CN
94.11.21.120 AS5607 Sky UK Limited 7.07ms from London, GB
76.176.46.168 AS20001 Charter Communications Inc 9.87ms from Los Angeles, US
178.120.179.104 AS6697 Republican Unitary Telecommunication Enterprise Beltelecom 6.39ms from Minsk, BY
153.203.65.200 AS4713 NTT DOCOMO BUSINESS,Inc. 2.67ms from Osaka, JP
49.62.108.232 AS4766 Korea Telecom 3.44ms from Seoul, KR
59.29.228.40 AS4766 Korea Telecom 1.23ms from Seoul, KR
20.94.78.24 AS8075 Microsoft Corporation 0.24ms from Boydton, US
68.43.179.136 AS7922 Comcast Cable Communications, LLC 10.27ms from Chicago, US
104.54.59.184 AS7018 AT&T Enterprises, LLC 3.66ms from Dallas, US
92.244.39.56 AS9141 P4 Sp. z o.o. 1.70ms from Gdynia, PL
175.164.210.232 AS4837 CHINA UNICOM China169 Backbone 9.63ms from Harbin, CN

Traceroute

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

$
traceroute -a -n -q1 203.233.156.97
traceroute to 203.233.156.97 (203.233.156.97): 64 hops max, 52 byte packets
2 [] 139.150.100.233 14.663 ms
3 [] 139.150.100.129 1.446 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
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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