211.236.123.0/24

AS45400 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS45400
Parent Range	211.236.64.0/18
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.236.64.0 - 211.236.127.255
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

Overlapping Ranges

BGP prefixes that contain 211.236.123.0/24

Range	ASN	Company	Num of IPs
211.236.64.0/18	AS45400	Korea Telecom	16,384
211.236.64.0/18	AS45999	Korea Telecom	16,384
211.236.64.0/18	AS4766	Korea Telecom	16,384

Nearby Ranges

BGP prefixes that overlap with 211.236.0.0/16

Range	ASN	Company	Num of IPs
211.236.64.0/18	AS45999	Korea Telecom	16,384
211.236.64.0/18	AS4766	Korea Telecom	16,384
211.236.64.0/18	AS45400	Korea Telecom	16,384
211.236.224.0/19	AS131866	SEJONG NETWORKS	8,192
211.236.192.0/19	AS18313	LG HelloVision Corp.	8,192
211.236.224.0/19	AS9848	SEJONG NETWORKS	8,192
211.236.128.0/19	AS18313	LG HelloVision Corp.	8,192
211.236.168.0/21	AS38661	abcle	2,048
211.236.184.0/21	AS38661	abcle	2,048
211.236.236.0/22	AS9848	dewsystem	1,024
211.236.236.0/22	AS131866	dewsystem	1,024
211.236.160.0/22	AS38661	abcle	1,024
211.236.180.0/22	AS38661	abcle	1,024
211.236.241.0/24	AS131866	Sysone	256
211.236.242.0/24	AS131866	Sysone	256
211.236.240.0/24	AS131866	Sysone	256

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
5.194.158.72	AS5384 Emirates Internet	`6.51ms` from Al Fujairah City, AE
97.84.178.40	AS20115 Charter Communications LLC	`9.67ms` from Chicago, US
198.203.148.120	AS33372 Spartan Stores Inc.	`8.30ms` from Flint, US
221.124.114.200	AS9304 HGC Global Communications Limited	`1.34ms` from Hong Kong, HK
90.39.254.216	AS3215 Orange S.A.	`1.33ms` from Lyon, FR
84.47.172.216	AS216235 LIMITED LIABILITY COMPANY CYBERPROTECT	`0.87ms` from Moscow, RU
172.236.167.184	AS63949 Akamai Connected Cloud	`0.40ms` from Mumbai, IN
68.202.6.88	AS33363 Charter Communications, Inc	`5.33ms` from Orlando, US
191.204.246.8	AS26599 TELEFÔNICA BRASIL S.A	`4.38ms` from Osasco, BR
180.235.237.72	AS9597 KDDI Web Communications Inc.	`0.82ms` from Tokyo, JP
184.148.91.216	AS577 Bell Canada	`1.16ms` from Toronto, CA
182.119.33.40	AS4837 CHINA UNICOM China169 Backbone	`1.32ms` from Zhengzhou, CN
125.47.149.248	AS4837 CHINA UNICOM China169 Backbone	`4.86ms` from Zhengzhou, CN
20.25.30.184	AS8075 Microsoft Corporation	`0.47ms` from Ashburn, US
79.238.245.232	AS3320 Deutsche Telekom AG	`3.42ms` from Frankfurt am Main, DE
14.170.228.72	AS45899 VNPT Corp	`2.69ms` from Hanoi, VN
59.62.201.152	AS4134 CHINANET-BACKBONE	`7.22ms` from Nanchang, CN
112.31.198.88	AS9808 China Mobile Communications Group Co., Ltd.	`9.00ms` from Nanjing, CN
122.1.57.104	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.91ms` from Osaka, JP
88.89.128.104	AS2119 Telenor Norge AS	`8.12ms` from Oslo, NO
27.217.173.152	AS4837 CHINA UNICOM China169 Backbone	`6.49ms` from Qingdao, CN
186.6.137.120	AS6400 Compañía Dominicana de Teléfonos S. A.	`3.24ms` from Santo Domingo, DO
4.193.129.248	AS8075 Microsoft Corporation	`0.61ms` from Singapore, SG
179.95.128.232	AS18881 TELEFÔNICA BRASIL S.A	`19.00ms` from São Paulo, BR
114.44.17.24	AS3462 Data Communication Business Group	`1.05ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -m6 211.236.123.114

traceroute to 211.236.123.114 (211.236.123.114): 6 hops max, 52 byte packets

1 [AS59187] 154.221.35.1 64.702 ms

2 *

3 [AS9583] 1.7.50.236 2.711 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Mumbai, IN

On January 18th 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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