210.121.158.0/24

AS18176 · KOOKMIN UNIVERSITY

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Summary

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

WHOIS Details

inetnum:        210.121.128.0 - 210.121.255.255
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:        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

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

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

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

IP Address	ASN	Details
210.121.158.184	AS18176 KOOKMIN UNIVERSITY	`2.33ms` 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
94.59.81.24	AS5384 Emirates Internet	`5.08ms` from Al Fujairah City, AE
84.38.192.24	AS41167 REWE digital GmbH	`4.52ms` from Frankfurt am Main, DE
113.191.167.152	AS45899 VNPT Corp	`3.81ms` from Hanoi, VN
146.112.86.104	AS36692 Cisco OpenDNS, LLC	`0.48ms` from Herndon, US
46.158.35.104	AS12389 PJSC Rostelecom	`1.29ms` from Krasnodar, RU
20.198.20.120	AS8075 Microsoft Corporation	`0.30ms` from Lohogaon, IN
148.79.1.120	AS786 Jisc Services Limited	`7.12ms` from London, GB
92.132.238.136	AS3215 Orange S.A.	`6.19ms` from Lyon, FR
92.170.41.200	AS3215 Orange S.A.	`10.68ms` from Paris, FR
77.245.131.200	AS39931 FRANCHE COMTE NET SAS	`17.72ms` from Paris, FR
44.223.170.136	AS14618 Amazon.com, Inc.	`0.16ms` from Reston, US
54.173.227.184	AS14618 Amazon.com, Inc.	`0.27ms` from Reston, US
76.209.79.24	AS7018 AT&T Enterprises, LLC	`3.58ms` from San Antonio, US
220.91.95.72	AS4766 Korea Telecom	`1.86ms` from Seoul, KR
39.172.242.120	AS56041 China Mobile communications corporation	`4.70ms` from Suzhou, CN
77.127.222.152	AS12400 Partner Communications Ltd.	`1.80ms` from Tel Aviv, IL
110.66.142.200	AS2527 Sony Network Communications Inc.	`1.80ms` from Tokyo, JP
27.138.222.56	AS9824 JCOM Co., Ltd.	`8.78ms` from Tokyo, JP
43.143.170.232	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.95ms` from Beijing, CN
70.52.10.136	AS577 Bell Canada	`4.64ms` from Montreal, CA
69.122.87.120	AS6128 Cablevision Systems Corp.	`8.55ms` from New York City, US
51.15.252.120	AS12876 SCALEWAY S.A.S.	`0.68ms` from Paris, FR
44.250.55.104	AS16509 Amazon.com, Inc.	`5.05ms` from Portland, US
13.66.220.184	AS8075 Microsoft Corporation	`0.28ms` from Quincy, US
189.146.131.72	AS8151 UNINET	`3.99ms` from Santiago de Queretaro, MX

Traceroute

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

traceroute -a -n -q1 -m4 210.121.158.239

traceroute to 210.121.158.239 (210.121.158.239): 4 hops max, 52 byte packets

1 [AS150075] 103.169.86.1 0.321 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Indore, IN

On August 28th 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.

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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