121.150.39.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.150.39.0-121.150.39.255

WHOIS Details

inetnum:            121.150.39.0 - 121.150.39.255
descr:              Gyeongbukdaehakgyo
network-type:       CUSTOMER
address:            Hyoryeong-Myeon Gunwi-Gun Gyeongsangbuk-Do
zip-code:           716-820
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 121.150.39.0/24

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.150.0.0/16

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
121.150.39.104	AS4766 Korea Telecom	`5.27ms` 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
140.208.202.104	AS3477 National Oceanic and Atmospheric Administration	`11.74ms` from Ashburn, US
171.61.202.200	AS24560 Bharti Airtel Ltd., Telemedia Services	`9.69ms` from Delhi, IN
179.251.87.72	AS26615 TIM S/A	`10.80ms` from Fortaleza, BR
142.129.174.184	AS20001 Charter Communications Inc	`5.35ms` from Los Angeles, US
74.84.213.8	AS13649 Flexential Colorado Corp.	`7.21ms` from Miami, US
73.228.135.8	AS7922 Comcast Cable Communications, LLC	`2.91ms` from Minneapolis, US
122.192.118.72	AS4837 CHINA UNICOM China169 Backbone	`9.06ms` from Nanjing, CN
54.172.45.168	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
151.76.12.120	AS1267 WIND TRE S.P.A.	`13.33ms` from Rome, IT
190.167.187.120	AS6400 Compañía Dominicana de Teléfonos S. A.	`3.44ms` from Santo Domingo, DO
222.104.22.216	AS4766 Korea Telecom	`5.25ms` from Seoul, KR
116.235.99.184	AS4812 China Telecom (Group)	`2.71ms` from Shanghai, CN
198.180.188.168	AS7773 South Dakota State Government	`5.68ms` from Sioux Falls, US
36.230.197.56	AS3462 Data Communication Business Group	`1.21ms` from Taipei, TW
102.153.80.24	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`12.66ms` from Tunis, TN
77.239.214.24	AS8359 MTS PJSC	`6.12ms` from Yekaterinburg, RU
20.86.168.120	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
186.124.19.40	AS7303 Telecom Argentina S.A.	`16.91ms` from Buenos Aires, AR
74.131.173.56	AS10796 Charter Communications Inc	`17.25ms` from Cleveland, US
62.54.184.104	AS6805 Telefonica Germany GmbH & Co.OHG	`0.63ms` from Hamburg, DE
223.16.100.200	AS9304 HGC Global Communications Limited	`1.44ms` from Hong Kong, HK
35.178.178.8	AS16509 Amazon.com, Inc.	`0.56ms` from London, GB
89.81.167.152	AS5410 Bouygues Telecom SA	`1.22ms` from Lyon, FR
179.14.17.24	AS27831 Colombia Móvil	`13.59ms` from Medellin, CO
167.60.141.216	AS6057 Administracion Nacional de Telecomunicaciones	`1.70ms` from Montevideo, UY

Traceroute

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

traceroute -a -n -q1 121.150.39.111

traceroute to 121.150.39.111 (121.150.39.111): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.43 0.108 ms

2 *

3 *

4 *

5 [AS4766] 112.174.116.94 5.801 ms

6 *

7 *

8 [AS4766] 121.181.228.98 10.762 ms

9 [AS4766] 121.150.39.111 5.977 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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