221.154.90.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	221.144.0.0/12
Registry	KRNIC
ID	221.154.90.0-221.154.90.255

WHOIS Details

inetnum:            221.154.90.0 - 221.154.90.255
descr:              Inhagongeopjeonmundaehak
network-type:       CUSTOMER
address:            Yonghyeon-Dong Nam-Gu Incheongwangyeok-Si
zip-code:           402-020
created:            2015-03-17
admin:              GENERATED-KRNIC-IP-MANAGER-KORNETIP
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-KORNETIP
person:             IP Manager
name:               IP Manager
phone:              +82-2-500-6630
e-mail:             kornet_ip@kt.com
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 221.154.90.0/24

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS152232	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576

Nearby Ranges

BGP prefixes that overlap with 221.154.0.0/16

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS152232	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.154.82.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.89.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.85.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.86.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.83.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.88.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.87.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.84.0/24	AS4766	Inhagongeopjeonmundaehak	256

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.154.90.200	itc.kr	2
221.154.90.12	itc.kr	2
221.154.90.11	inhatc.ac.kr	1

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
221.154.90.146	AS4766 Korea Telecom	`0.39ms` 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
70.101.23.200	AS5650 Frontier Communications of America, Inc.	`18.42ms` from Ashburn, US
171.99.188.216	AS7470 TRUE INTERNET Co.,Ltd.	`1.96ms` from Bangkok, TH
201.207.54.152	AS11830 Instituto Costarricense de Electricidad y Telecom.	`0.77ms` from Curridabat, CR
20.174.167.8	AS8075 Microsoft Corporation	`1.54ms` from Dubai, AE
60.187.8.104	AS4134 CHINANET-BACKBONE	`8.18ms` from Hangzhou, CN
20.49.213.232	AS8075 Microsoft Corporation	`0.23ms` from London, GB
151.83.200.40	AS1267 WIND TRE S.P.A.	`4.61ms` from Milan, IT
163.123.12.136	AS11232 Midcontinent Communications	`8.49ms` from Minneapolis, US
178.122.197.72	AS6697 Republican Unitary Telecommunication Enterprise Beltelecom	`1.76ms` from Minsk, BY
115.97.91.216	AS17488 Hathway IP Over Cable Internet	`1.30ms` from Saint Thomas Mount, IN
54.149.22.184	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
129.89.65.136	AS7050 University of Wisconsin - Milwaukee	`3.76ms` from Chicago, US
149.137.221.152	AS12213 Centersquare	`0.63ms` from Denver, US
79.210.108.72	AS3320 Deutsche Telekom AG	`4.06ms` from Duesseldorf, DE
182.189.2.216	AS17557 Pakistan Telecommunication Company Limited	`2.66ms` from Lahore, PK
187.208.154.40	AS8151 UNINET	`1.84ms` from Mexico City, MX
31.15.14.24	AS25234 ACTIVE 24, s.r.o.	`0.36ms` from Prague, CZ
187.154.110.248	AS8151 UNINET	`17.56ms` from Santiago de Queretaro, MX
128.208.98.120	AS73 University of Washington	`0.61ms` from Seattle, US
124.53.86.136	AS17858 LG POWERCOMM	`1.98ms` from Seoul, KR
119.206.239.40	AS4766 Korea Telecom	`1.69ms` from Seoul, KR
13.237.212.232	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
20.76.176.232	AS8075 Microsoft Corporation	`0.26ms` from Amsterdam, NL
81.94.216.168	AS34587 Hillside (Technology) Ltd	`5.02ms` from Chester, GB
74.140.44.56	AS10796 Charter Communications Inc	`9.30ms` from Columbus, US

Traceroute

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

traceroute -a -n -q1 221.154.90.140

traceroute to 221.154.90.140 (221.154.90.140): 64 hops max, 52 byte packets

1 [AS199524] 82.117.226.1 0.158 ms

2 [AS199524] 92.223.1.73 0.106 ms

3 *

4 *

5 [AS4766] 121.172.172.62 0.64 ms

6 *

7 *

8 [AS4766] 221.154.90.140 0.437 ms

Measurement taken from

IPinfo ProbeNet in Incheon, KR

On March 21st 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.

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