221.154.87.0/24

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	221.154.87.0-221.154.87.255

WHOIS Details

inetnum:            221.154.87.0 - 221.154.87.255
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:             [email protected]
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 221.154.87.0/24

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS131842	Korea Telecom	1,048,576
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	AS131842	Korea Telecom	1,048,576
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
221.154.83.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.84.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.85.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.86.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.88.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.89.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.90.0/24	AS4766	Inhagongeopjeonmundaehak	256
221.154.82.0/24	AS4766	Inhagongeopjeonmundaehak	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
47.38.78.88	AS20115 Charter Communications LLC	`7.93ms` from Atlanta, US
181.189.67.24	AS271350 FSNET PROVEDOR	`5.68ms` from Campina Grande, BR
112.18.202.24	AS9808 China Mobile Communications Group Co., Ltd.	`3.52ms` from Chengdu, CN
79.231.158.248	AS3320 Deutsche Telekom AG	`6.27ms` from Duesseldorf, DE
14.181.220.216	AS45899 VNPT Corp	`2.06ms` from Hanoi, VN
73.77.103.168	AS7922 Comcast Cable Communications, LLC	`6.51ms` from Houston, US
67.241.7.136	AS11351 Charter Communications Inc	`15.42ms` from New York City, US
95.52.63.56	AS12389 PJSC Rostelecom	`17.33ms` from Saint Petersburg, RU
47.88.12.184	AS45102 Alibaba (US) Technology Co., Ltd.	`0.41ms` from Santa Clara, US
177.34.16.24	AS28573 Claro NXT Telecomunicacoes Ltda	`2.24ms` from Sao Paulo, BR
32.221.215.168	AS46690 Southern New England Telephone Company and SNET America, Inc.	`4.16ms` from Secaucus, US
13.55.200.88	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
101.0.120.40	AS55803 Hostopia Australia Web Pty Ltd	`0.18ms` from Sydney, AU
192.249.139.56	AS11666 Nexicom Inc.	`14.49ms` from Toronto, CA
178.74.138.136	AS196991 System Operator of the United Power System, JSC	`0.84ms` from Yekaterinburg, RU
87.128.90.136	AS3320 Deutsche Telekom AG	`11.01ms` from Berlin, DE
88.9.213.216	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.87ms` from Madrid, ES
118.106.200.72	AS18126 Chubu Telecommunications Company, Inc.	`4.12ms` from Osaka, JP
119.47.237.8	AS7679 QTnet,Inc.	`8.89ms` from Osaka, JP
90.23.245.88	AS3215 Orange S.A.	`3.90ms` from Paris, FR
193.202.111.200	AS42467 PLUG AND TEL SARL	`0.34ms` from Paris, FR
90.182.49.40	AS5610 O2 Czech Republic, a.s.	`0.91ms` from Prague, CZ
73.240.55.88	AS7922 Comcast Cable Communications, LLC	`7.31ms` from Seattle, US
220.119.247.40	AS4766 Korea Telecom	`7.20ms` from Seoul, KR
106.178.114.88	AS2516 KDDI CORPORATION	`2.64ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -m9 221.154.87.91

traceroute to 221.154.87.91 (221.154.87.91): 9 hops max, 52 byte packets

1 [AS15169] 74.125.251.95 322.555 ms

2 *

3 [AS4766] 112.174.84.29 398.599 ms

4 [AS4766] 112.174.47.154 422.182 ms

5 *

6 [AS4766] 121.172.172.62 404.433 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Doha, QA

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.

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