210.123.40.0/24

AS18176 · KOOKMIN UNIVERSITY

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	South Korea
Domain	kt.com
ASN	AS18176
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.123.0.0 - 210.123.127.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-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 210.123.0.0/16

No nearby ranges found.

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

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

IP Address	ASN	Details
210.123.40.209	AS18176 KOOKMIN UNIVERSITY	`1.73ms` from Incheon, 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
92.68.102.120	AS1136 KPN B.V.	`2.52ms` from Amsterdam, NL
200.16.135.216	AS10834 Telefonica de Argentina	`0.61ms` from Buenos Aires, AR
98.227.49.168	AS7922 Comcast Cable Communications, LLC	`6.67ms` from Chicago, US
90.101.31.40	AS3215 Orange S.A.	`9.90ms` from Frankfurt am Main, DE
84.152.34.232	AS3320 Deutsche Telekom AG	`4.74ms` from Frankfurt am Main, DE
197.94.213.88	AS20011 Dimension Data	`0.91ms` from Johannesburg, ZA
91.243.18.40	AS41911 Lanet Network Ltd	`8.90ms` from Kyiv, UA
81.84.66.136	AS2860 NOS COMUNICACOES, S.A.	`9.99ms` from Lisbon, PT
89.243.191.184	AS13285 TalkTalk Communications Limited	`5.66ms` from Manchester, GB
38.213.90.136	AS984 OCTOPUS WEB SOLUTION INC	`0.26ms` from Mexico City, MX
5.104.57.136	AS59815 Kompeatelecom Ltd.	`15.63ms` from Moscow, RU
14.32.32.184	AS4766 Korea Telecom	`1.31ms` from Seoul, KR
201.43.109.184	AS27699 TELEFÔNICA BRASIL S.A	`8.12ms` from São Paulo, BR
218.160.30.24	AS3462 Data Communication Business Group	`14.36ms` from Taipei, TW
133.130.106.8	AS7506 GMO Internet Group, Inc.	`0.30ms` from Tokyo, JP
142.112.163.120	AS577 Bell Canada	`1.43ms` from Toronto, CA
110.251.90.216	AS4837 CHINA UNICOM China169 Backbone	`5.27ms` from Beijing, CN
3.248.124.232	AS16509 Amazon.com, Inc.	`0.29ms` from Dublin, IE
93.209.72.8	AS3320 Deutsche Telekom AG	`4.32ms` from Duesseldorf, DE
80.133.11.168	AS3320 Deutsche Telekom AG	`8.11ms` from Frankfurt am Main, DE
104.56.62.200	AS7018 AT&T Enterprises, LLC	`4.84ms` from Houston, US
119.162.82.24	AS4837 CHINA UNICOM China169 Backbone	`3.22ms` from Jinan, CN
176.101.28.232	AS198193 Television por Cable Santa Pola SL	`6.96ms` from Madrid, ES
83.51.20.168	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.50ms` from Madrid, ES
61.86.157.88	AS18081 Kintetsu Cable Network Co., Ltd.	`1.37ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 210.123.40.146

traceroute to 210.123.40.146 (210.123.40.146): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.42 0.076 ms

2 [AS3786] 211.118.152.142 9.86 ms

3 *

4 *

5 *

6 *

7 [AS3786] 115.89.206.242 2.597 ms

8 *

9 [AS18176] 210.123.40.146 2.45 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 19th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales