103.157.158.0/24

AS23579 · Seoul Metropolitan Office Of Education

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Summary

Country	South Korea
Domain	sen.go.kr
ASN	AS23579
Registry	APNIC
ID	SERIICENTER

WHOIS Details

inetnum:        103.157.158.0 - 103.157.159.255
netname:        SERIICENTER
descr:          SEOUL EDUCATION RESEARCH INFORMATION INSTITUTE
admin-c:        IM939-AP
tech-c:         IM939-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-irt:        IRT-KRNIC-KR
mnt-by:         MNT-KRNIC-AP
mnt-lower:      MNT-KRNIC-AP
last-modified:  2020-11-02T00:38:55Z
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:        Seoul Jung-gu Sopa-ro
country:        KR
phone:          +82-2-6973-9985
e-mail:         center@sen.go.kr
nic-hdl:        IM939-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-11-18T01:58:02Z
source:         APNIC

inetnum:        103.157.158.0 - 103.157.159.255
netname:        SERIICENTER-KR
descr:          Seoul Education Research Information Institute
country:        KR
admin-c:        IM3375-KR
tech-c:         IM3375-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:        Seoul Jung-gu Sopa-ro
address:        Seoul Education Research Information Institute
country:        KR
phone:          +82-2-6973-9985
e-mail:         center@sen.go.kr
nic-hdl:        IM3375-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Hosted domains

There are 17 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
103.157.158.110	hansei.hs.kr	12
103.157.158.130	serii.re.kr	3
103.157.158.160	jinhak.or.kr	1
103.157.158.134	webzine-serii.re.kr	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
103.157.158.110	AS23579 Seoul Metropolitan Office Of Education	`1.47ms` 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
106.202.194.40	AS24560 Bharti Airtel Ltd., Telemedia Services	`3.27ms` from Ahmedabad, IN
162.221.196.248	AS21859 Zenlayer Inc	`0.65ms` from Frankfurt am Main, DE
14.249.13.56	AS45899 VNPT Corp	`4.88ms` from Hanoi, VN
194.28.70.40	AS34065 Individual Entrepreneur Tetiana Markova	`8.32ms` from Kyiv, UA
104.175.209.104	AS20001 Charter Communications Inc	`5.34ms` from Los Angeles, US
149.28.88.152	AS20473 The Constant Company, LLC	`0.11ms` from Los Angeles, US
195.208.251.8	AS5480 State Educational institution for High professional education 'Southern Federal University'	`16.10ms` from Moscow, RU
37.205.82.8	AS21127 Joint Stock Company TransTeleCom	`9.10ms` from Novosibirsk, RU
71.47.79.120	AS33363 Charter Communications, Inc	`8.45ms` from Orlando, US
75.25.129.248	AS7018 AT&T Enterprises, LLC	`19.86ms` from San Jose, US
85.228.67.152	AS2119 Telenor Norge AS	`5.15ms` from Stockholm, SE
87.120.2.248	AS34577 SKAT TV Ltd.	`2.32ms` from Varna, BG
210.44.210.168	AS4538 China Education and Research Network Center	`9.48ms` from Beijing, CN
104.24.37.72	AS13335 Cloudflare, Inc.	`0.14ms` from Buenos Aires, AR
68.71.74.184	AS20135 Millennium Telcom LLC	`2.06ms` from Dallas, US
167.73.14.88	AS30710 Spectrum Health	`5.46ms` from Detroit, US
84.183.131.104	AS3320 Deutsche Telekom AG	`3.64ms` from Duesseldorf, DE
92.222.117.56	AS16276 OVH SAS	`0.09ms` from Gravelines, FR
8.134.12.248	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.11ms` from Guangzhou, CN
117.68.125.152	AS140527 China Telecom	`6.41ms` from Nanchang, CN
115.68.221.8	AS38700 SMILESERV	`1.50ms` from Seoul, KR
180.71.3.168	AS9318 SK Broadband Co Ltd	`5.65ms` from Seoul, KR
118.220.13.136	AS9318 SK Broadband Co Ltd	`7.12ms` from Seoul, KR
58.91.80.88	AS4713 NTT Communications Corporation	`3.55ms` from Tokyo, JP
153.198.205.216	AS4713 NTT Communications Corporation	`3.15ms` 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 -m5 103.157.158.136

traceroute to 103.157.158.136 (103.157.158.136): 5 hops max, 52 byte packets

1 [AS3920] 77.247.111.17 0.17 ms

2 [AS3920] 77.247.111.129 0.147 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Tallinn, EE

On August 22nd 2025

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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