218.159.128.0/21

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	218.152.0.0/13
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        218.152.0.0 - 218.159.255.255
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

Overlapping Ranges

BGP prefixes that contain 218.159.128.0/21

Range	ASN	Company	Num of IPs
218.152.0.0/13	AS131095	Korea Telecom	524,288
218.152.0.0/13	AS17859	Korea Telecom	524,288
218.152.0.0/13	AS17862	Korea Telecom	524,288
218.152.0.0/13	AS18023	Korea Telecom	524,288
218.152.0.0/13	AS38124	Korea Telecom	524,288
218.152.0.0/13	AS38390	Korea Telecom	524,288
218.152.0.0/13	AS38394	Korea Telecom	524,288
218.152.0.0/13	AS38395	Korea Telecom	524,288
218.152.0.0/13	AS38399	Korea Telecom	524,288
218.152.0.0/13	AS38412	Korea Telecom	524,288
218.152.0.0/13	AS38422	Korea Telecom	524,288
218.152.0.0/13	AS38431	Korea Telecom	524,288
218.152.0.0/13	AS4766	Korea Telecom	524,288
218.152.0.0/13	AS4790	Korea Telecom	524,288
218.152.0.0/13	AS9647	Korea Telecom	524,288
218.152.0.0/13	AS9776	Korea Telecom	524,288

Nearby Ranges

BGP prefixes that overlap with 218.159.0.0/16

Range	ASN	Company	Num of IPs
218.152.0.0/13	AS131095	Korea Telecom	524,288
218.152.0.0/13	AS17859	Korea Telecom	524,288
218.152.0.0/13	AS17862	Korea Telecom	524,288
218.152.0.0/13	AS18023	Korea Telecom	524,288
218.152.0.0/13	AS38124	Korea Telecom	524,288
218.152.0.0/13	AS38390	Korea Telecom	524,288
218.152.0.0/13	AS38394	Korea Telecom	524,288
218.152.0.0/13	AS38395	Korea Telecom	524,288
218.152.0.0/13	AS38399	Korea Telecom	524,288
218.152.0.0/13	AS38412	Korea Telecom	524,288
218.152.0.0/13	AS38422	Korea Telecom	524,288
218.152.0.0/13	AS38431	Korea Telecom	524,288
218.152.0.0/13	AS4766	Korea Telecom	524,288
218.152.0.0/13	AS4790	Korea Telecom	524,288
218.152.0.0/13	AS9647	Korea Telecom	524,288
218.152.0.0/13	AS9776	Korea Telecom	524,288

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
218.159.133.45	AS4766 Korea Telecom	`2.88ms` 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
40.70.77.229	AS8075 Microsoft Corporation	`0.34ms` from Boydton, US
35.206.168.117	AS15169 Google LLC	`0.18ms` from Brussels, BE
41.75.215.5	AS37133 Airtel Tanzania	`0.61ms` from Dar es Salaam, TZ
103.166.171.101	AS142124 Shubas Broadband Internet Service	`0.64ms` from Dhaka, BD
86.23.149.53	AS5089 Virgin Media Limited	`10.22ms` from Dublin, IE
84.132.192.53	AS3320 Deutsche Telekom AG	`5.50ms` from Frankfurt am Main, DE
190.95.152.229	AS27947 Telconet S.A	`1.25ms` from Guayaquil, EC
92.79.214.101	AS3209 Vodafone GmbH	`0.64ms` from Hamburg, DE
60.175.134.37	AS4134 CHINANET-BACKBONE	`9.39ms` from Huai'an, CN
182.71.233.85	AS9498 BHARTI Airtel Ltd.	`0.69ms` from Mumbai, IN
108.41.38.69	AS701 Verizon Business	`2.83ms` from New York City, US
52.147.66.181	AS8075 Microsoft Corporation	`0.17ms` from Osaka, JP
20.97.57.197	AS8075 Microsoft Corporation	`0.20ms` from San Antonio, US
69.191.81.85	AS10361 Bloomberg, LP	`3.18ms` from Secaucus, US
112.160.125.149	AS4766 Korea Telecom	`0.84ms` from Seoul, KR
4.217.218.117	AS8075 Microsoft Corporation	`0.49ms` from Seoul, KR
104.69.170.133	AS16625 Akamai Technologies, Inc.	`0.31ms` from Singapore, SG
209.171.122.69	AS852 TELUS Communications Inc.	`0.78ms` from Toronto, CA
34.65.198.229	AS396982 Google LLC	`0.12ms` from Zuerich, CH
75.136.242.53	AS20115 Charter Communications LLC	`6.19ms` from Atlanta, US
97.67.137.165	AS7029 Windstream Communications LLC	`5.31ms` from Atlanta, US
13.246.40.197	AS16509 Amazon.com, Inc.	`0.11ms` from Cape Town, ZA
136.112.57.101	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
179.248.5.229	AS26615 TIM S/A	`12.53ms` from Fortaleza, BR
96.39.107.69	AS20115 Charter Communications LLC	`12.95ms` from Herndon, US

Traceroute

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

traceroute -a -n -q1 -f5 218.159.133.45

traceroute to 218.159.133.45 (218.159.133.45): 64 hops max, 52 byte packets

5 [AS9286] 121.78.63.149 1.283 ms

6 [AS9957] 203.246.169.173 1.364 ms

7 *

8 *

9 [AS4766] 112.174.27.62 2.029 ms

10 *

11 [AS4766] 211.231.190.166 2.856 ms

12 *

13 *

14 *

15 [AS4766] 218.159.133.45 3.118 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On October 30th 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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