210.123.35.0/24

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:        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

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

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

IP Address	ASN	Details
210.123.35.173	AS18176 KOOKMIN UNIVERSITY	`1.75ms` 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
75.89.122.136	AS7029 Windstream Communications LLC	`0.54ms` from Atlanta, US
35.89.117.56	AS16509 Amazon.com, Inc.	`0.31ms` from Boardman, US
172.9.55.216	AS7018 AT&T Enterprises, LLC	`19.00ms` from Chicago, US
1.6.136.24	AS132215 Powergrid Teleservices Limited	`1.43ms` from Delhi, IN
125.118.117.72	AS4134 CHINANET-BACKBONE	`7.62ms` from Hangzhou, CN
124.90.8.200	AS4837 CHINA UNICOM China169 Backbone	`5.90ms` from Hangzhou, CN
100.1.109.232	AS701 Verizon Business	`1.62ms` from New York City, US
115.204.101.232	AS4134 CHINANET-BACKBONE	`7.56ms` from Ningbo, CN
37.193.194.168	AS31200 Novotelecom Ltd	`1.22ms` from Novosibirsk, RU
91.166.115.200	AS12322 Free SAS	`9.48ms` from Paris, FR
176.182.147.72	AS5410 Bouygues Telecom SA	`8.66ms` from Paris, FR
177.182.80.8	AS28573 Claro NXT Telecomunicacoes Ltda	`9.05ms` from Rio de Janeiro, BR
54.183.87.248	AS16509 Amazon.com, Inc.	`0.14ms` from San Jose, US
181.73.19.184	AS6535 Telmex Servicios Empresariales S.A.	`16.08ms` from Santiago, CL
89.253.87.168	AS33885 Telenor Sverige AB	`0.79ms` from Stockholm, SE
177.191.41.168	AS53006 ALGAR TELECOM S/A	`5.46ms` from Uberlandia, BR
34.28.97.88	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
68.105.51.248	AS22773 Cox Communications Inc.	`14.86ms` from Dallas, US
108.254.233.152	AS7018 AT&T Enterprises, LLC	`2.29ms` from Dallas, US
81.140.61.120	AS2856 British Telecommunications PLC	`5.49ms` from Erith, GB
18.157.141.136	AS16509 Amazon.com, Inc.	`0.20ms` from Frankfurt am Main, DE
206.213.193.200	AS6646 Aetna, Inc.	`8.63ms` from Los Angeles, US
134.17.16.120	AS25106 Mobile TeleSystems JLLC	`1.19ms` from Minsk, BY
13.200.133.216	AS16509 Amazon.com, Inc.	`0.17ms` from Mumbai, IN
27.218.209.88	AS4837 CHINA UNICOM China169 Backbone	`7.69ms` from Qingdao, CN

Traceroute

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

traceroute -a -n -q1 210.123.35.120

traceroute to 210.123.35.120 (210.123.35.120): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.42 0.08 ms

2 [AS3786] 211.118.152.142 0.99 ms

3 *

4 *

5 *

6 *

7 [AS3786] 115.89.206.242 2.591 ms

8 *

9 [AS18176] 210.123.35.120 2.462 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.

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