210.123.45.0/24

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

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

IP Address	ASN	Details
210.123.45.203	AS18176 KOOKMIN UNIVERSITY	`2.36ms` 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
87.195.2.8	AS12414 Solcon Internetdiensten B.V.	`1.31ms` from Amsterdam, NL
192.225.26.104	AS19215 PES Energize	`10.49ms` from Atlanta, US
107.172.130.248	AS36352 HostPapa	`0.09ms` from Buffalo, US
23.119.168.72	AS7018 AT&T Enterprises, LLC	`6.51ms` from Dallas, US
208.90.229.40	AS5056 Aureon Network Services	`12.36ms` from Des Moines, US
40.104.52.136	AS8075 Microsoft Corporation	`3.56ms` from Dubai, AE
54.228.23.72	AS16509 Amazon.com, Inc.	`0.19ms` from Dublin, IE
177.107.110.88	AS262323 STAR CONECT TELECOM LTDA	`14.81ms` from Joao Pessoa, BR
104.174.16.8	AS20001 Charter Communications Inc	`4.30ms` from Los Angeles, US
38.12.223.104	AS398823 PEG TECH INC	`0.34ms` from Los Angeles, US
13.120.116.8	AS36351 IBM Cloud	`0.47ms` from Madrid, ES
179.73.164.56	AS26615 TIM S/A	`1.96ms` from Osasco, BR
39.85.22.216	AS4837 CHINA UNICOM China169 Backbone	`5.89ms` from Qingdao, CN
120.154.75.168	AS1221 Telstra Limited	`4.80ms` from Sydney, AU
82.81.108.56	AS8551 Bezeq International Ltd.	`3.46ms` from Tel Aviv, IL
202.5.205.40	AS10076 ERDEMNET Mongolian National Research and Education Network	`0.44ms` from Ulan Bator, MN
20.232.231.24	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
222.153.229.248	AS4771 Spark New Zealand Trading Ltd.	`3.34ms` from Auckland, NZ
100.0.180.152	AS701 Verizon Business	`1.16ms` from Boston, US
84.3.97.248	AS5483 Magyar Telekom Plc.	`6.34ms` from Budapest, HU
76.49.31.216	AS11426 Charter Communications Inc	`2.12ms` from Charlotte, US
18.185.131.248	AS16509 Amazon.com, Inc.	`0.48ms` from Frankfurt am Main, DE
157.240.24.136	AS32934 Facebook, Inc.	`1.61ms` from Houston, US
184.186.235.232	AS22773 Cox Communications Inc.	`3.60ms` from Los Angeles, US
88.36.130.248	AS3269 Telecom Italia S.p.A.	`3.54ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -m5 210.123.45.155

traceroute to 210.123.45.155 (210.123.45.155): 5 hops max, 52 byte packets

1 [AS31898] 140.91.214.59 0.087 ms

2 [AS3786] 211.118.152.142 0.813 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On August 29th 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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