121.150.50.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	121.128.0.0/11
Registry	APNIC
ID	KORNET

WHOIS Details

inetnum:        121.128.0.0 - 121.159.255.255
netname:        KORNET
descr:          Korea Telecom
admin-c:        IM667-AP
tech-c:         IM667-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20170203
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Seoul Songpa-gu Jungdae-ro 135
e-mail:         hostmaster@nic.or.kr
abuse-mailbox:  hostmaster@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20150513
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20170328
source:         APNIC

inetnum:        121.128.0.0 - 121.159.255.255
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
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.krnic.net.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
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
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
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
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 121.150.50.0/24

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	AS9856	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	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.150.39.0/24	AS4766	Gyeongbukdaehakgyo	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

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

IP Address	ASN	Details
121.150.50.254	AS4766 Korea Telecom	`5.03ms` 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
146.12.142.40	AS397976 Central Access, Inc.	`7.10ms` from Atlanta, US
142.44.187.232	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
184.59.46.216	AS10796 Charter Communications Inc	`8.54ms` from Chicago, US
65.30.200.40	AS10796 Charter Communications Inc	`6.93ms` from Chicago, US
97.157.184.152	AS6167 Verizon Business	`13.65ms` from Chicago, US
23.219.187.136	AS16625 Akamai Technologies, Inc.	`0.57ms` from Dallas, US
180.70.195.40	AS9318 SK Broadband Co Ltd	`1.67ms` from Incheon, KR
193.148.251.88	AS34927 iFog GmbH	`0.02ms` from Kansas City, US
192.62.225.56	AS22516 Charter Communications LLC	`6.72ms` from Los Angeles, US
122.52.70.216	AS9299 Philippine Long Distance Telephone Company	`0.91ms` from Manila, PH
73.107.184.136	AS7922 Comcast Cable Communications, LLC	`3.97ms` from Miami, US
20.245.139.136	AS8075 Microsoft Corporation	`0.56ms` from San Jose, US
64.184.179.88	AS16713 Northwest Open Access Network	`0.26ms` from Seattle, US
174.163.32.216	AS7922 Comcast Cable Communications, LLC	`5.59ms` from Atlanta, US
186.128.21.200	AS22927 Telefonica de Argentina	`1.92ms` from Buenos Aires, AR
52.209.55.24	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
102.214.100.24	AS37722 Kaldera Ltd	`0.87ms` from Ebene, MU
103.55.189.248	AS3786 LG DACOM Corporation	`1.22ms` from Incheon, KR
112.133.46.104	AS9946 KCTV JEJU BROADCASTING	`9.72ms` from Incheon, KR
4.240.34.152	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
80.36.233.136	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.84ms` from Madrid, ES
106.70.249.200	AS4804 Microplex PTY LTD	`3.22ms` from Melbourne, AU
151.32.193.184	AS1267 WIND TRE S.P.A.	`3.44ms` from Milan, IT
104.159.178.104	AS20115 Charter Communications LLC	`5.64ms` from Minneapolis, US
91.144.166.24	AS34590 JSC ER-Telecom Holding	`16.59ms` from Moscow, RU

Traceroute

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

traceroute -a -n -q1 121.150.50.210

traceroute to 121.150.50.210 (121.150.50.210): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.46 0.071 ms

2 [AS4766] 218.145.32.254 1.099 ms

3 *

4 *

5 [AS4766] 112.174.56.86 5.556 ms

6 *

7 *

8 [AS4766] 121.181.89.198 5.016 ms

9 *

10 [AS4766] 121.150.50.210 7.383 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On April 25th 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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