203.253.238.0/24

AS1237 · KISTI

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Summary

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

WHOIS Details

inetnum:        203.253.238.0 - 203.253.239.255
netname:        KREONet
descr:          KISTI
admin-c:        IM702-AP
tech-c:         IM702-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2017-02-02T07:21:44Z
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:        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:        203.253.238.0 - 203.253.239.255
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.
changed:        hostmaster@nic.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
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
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
203.253.236.0/24	AS1237	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

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Pingable IPs

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

IP Address	ASN	Details
203.253.238.1	AS1237 KISTI	`3.31ms` 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
73.29.74.152	AS7922 Comcast Cable Communications, LLC	`10.70ms` from Allentown, US
77.173.129.24	AS1136 KPN B.V.	`3.28ms` from Amsterdam, NL
96.231.58.8	AS701 Verizon Business	`2.16ms` from Ashburn, US
158.69.251.40	AS16276 OVH SAS	`0.10ms` from Beauharnois, CA
34.217.38.24	AS16509 Amazon.com, Inc.	`0.53ms` from Boardman, US
203.89.151.200	AS142011 Lister Ventures Private Limited	`0.63ms` from Chennai, IN
217.81.164.136	AS3320 Deutsche Telekom AG	`6.26ms` from Frankfurt am Main, DE
47.90.35.56	AS45102 Alibaba (US) Technology Co., Ltd.	`0.62ms` from Hong Kong, HK
119.155.37.152	AS17557 Pakistan Telecommunication Company Limited	`1.69ms` from Lahore, PK
2.124.216.216	AS5607 Sky UK Limited	`3.43ms` from London, GB
194.154.93.152	AS3216 PJSC "Vimpelcom"	`0.64ms` from Moscow, RU
69.113.89.152	AS6128 Cablevision Systems Corp.	`7.93ms` from New York City, US
186.220.24.168	AS28573 Claro NXT Telecomunicacoes Ltda	`5.30ms` from Osasco, BR
75.245.34.184	AS6167 Verizon Business	`17.20ms` from Philadelphia, US
217.209.248.24	AS3301 Telia Company AB	`1.17ms` from Stockholm, SE
95.110.46.152	AS28812 PJSC "Bashinformsvyaz"	`8.93ms` from Yekaterinburg, RU
185.34.12.152	AS31027 GlobalConnect A/S	`6.72ms` from Copenhagen, DK
135.119.52.152	AS8075 Microsoft Corporation	`0.17ms` from Des Moines, US
86.40.17.40	AS5466 Eircom Limited	`1.45ms` from Dublin, IE
90.222.109.72	AS5607 Sky UK Limited	`3.27ms` from Erith, GB
118.220.222.168	AS9318 SK Broadband Co Ltd	`1.25ms` from Incheon, KR
68.102.121.72	AS22773 Cox Communications Inc.	`10.88ms` from Kansas City, US
124.168.201.120	AS7545 TPG Telecom Limited	`1.55ms` from Melbourne, AU
24.228.199.72	AS6128 Cablevision Systems Corp.	`5.83ms` from New York City, US
62.219.143.24	AS8551 Bezeq International Ltd.	`3.93ms` from Petaẖ Tiqva, IL

Traceroute

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

traceroute -a -n -q1 -f4 203.253.238.5

traceroute to 203.253.238.5 (203.253.238.5): 64 hops max, 52 byte packets

4 [AS51346] 91.218.162.141 1.134 ms

5 [] 195.208.209.109 112.08 ms

6 [AS24482] 124.6.32.66 195.158 ms

7 *

8 *

9 [AS17579] 134.75.103.121 359.987 ms

10 [AS1237] 203.253.238.5 361.552 ms

Measurement taken from

IPinfo ProbeNet in Dushanbe, TJ

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.

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