210.123.33.0/24

AS18176 · KOOKMIN UNIVERSITY

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Summary

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

WHOIS Details

inetnum:        210.123.0.0 - 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

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

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

IP Address	ASN	Details
210.123.33.91	AS18176 KOOKMIN UNIVERSITY	`1.96ms` 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
86.90.101.88	AS1136 KPN B.V.	`1.23ms` from Amsterdam, NL
86.87.205.72	AS1136 KPN B.V.	`2.86ms` from Amsterdam, NL
50.41.27.72	AS5650 Frontier Communications of America, Inc.	`9.63ms` from Ashburn, US
4.184.67.120	AS8075 Microsoft Corporation	`0.16ms` from Frankfurt am Main, DE
154.205.111.200	AS9294 GNET INC.	`0.74ms` from Hong Kong, HK
80.5.116.104	AS5089 Virgin Media Limited	`5.96ms` from London, GB
74.116.150.200	AS17151 Vonage Holdings, Inc.	`5.27ms` from Los Angeles, US
69.244.62.200	AS7922 Comcast Cable Communications, LLC	`14.89ms` from Los Angeles, US
71.37.29.168	AS209 CenturyLink Communications, LLC	`2.74ms` from Minneapolis, US
142.119.122.72	AS577 Bell Canada	`1.80ms` from Montreal, CA
218.115.19.168	AS17676 SoftBank Corp.	`4.24ms` from Osaka, JP
153.182.129.136	AS4713 NTT Communications Corporation	`7.35ms` from Osaka, JP
46.212.35.232	AS41164 GET Norway	`2.09ms` from Oslo, NO
123.133.42.152	AS4837 CHINA UNICOM China169 Backbone	`6.81ms` from Qingdao, CN
52.86.247.200	AS14618 Amazon.com, Inc.	`0.13ms` from Reston, US
59.1.52.168	AS4766 Korea Telecom	`6.47ms` from Seoul, KR
60.121.85.184	AS17676 SoftBank Corp.	`3.20ms` from Tokyo, JP
27.143.71.104	AS9824 JCOM Co., Ltd.	`11.85ms` from Tokyo, JP
155.186.221.8	AS20115 Charter Communications LLC	`8.92ms` from Atlanta, US
192.111.214.8	AS393999 AlpineWEB	`10.38ms` from Chicago, US
174.182.6.88	AS7922 Comcast Cable Communications, LLC	`12.07ms` from Chicago, US
61.164.26.24	AS4134 CHINANET-BACKBONE	`4.06ms` from Hangzhou, CN
66.214.171.24	AS20115 Charter Communications LLC	`2.95ms` from Los Angeles, US
34.149.174.8	AS396982 Google LLC	`0.08ms` from Melbourne, AU
47.205.80.248	AS5650 Frontier Communications of America, Inc.	`7.83ms` from Miami, US

Traceroute

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

traceroute -a -n -q1 210.123.33.1

traceroute to 210.123.33.1 (210.123.33.1): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.25 0.085 ms

2 [AS3786] 211.118.152.142 1.362 ms

3 *

4 *

5 *

6 [AS3786] 211.53.88.117 1.369 ms

7 [AS3786] 211.63.37.10 2.488 ms

8 [AS3786] 1.208.146.10 2.126 ms

9 [AS3786] 1.213.140.10 2.169 ms

10 [AS3786] 1.213.141.22 1.766 ms

11 [AS3786] 115.89.206.242 2.538 ms

12 *

13 *

14 *

15 *

16 [AS18176] 210.123.33.1 2.555 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

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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