121.137.89.0/24

AS46009 · YABESK

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Summary

Country	South Korea
Domain	kt.com
ASN	AS46009
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 121.137.89.0/24

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS10040	Korea Telecom	2,097,152
121.128.0.0/11	AS131792	Korea Telecom	2,097,152
121.128.0.0/11	AS152214	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS17834	Korea Telecom	2,097,152
121.128.0.0/11	AS18023	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS23591	Korea Telecom	2,097,152
121.128.0.0/11	AS3786	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS38126	Korea Telecom	2,097,152
121.128.0.0/11	AS38394	Korea Telecom	2,097,152
121.128.0.0/11	AS38395	Korea Telecom	2,097,152
121.128.0.0/11	AS38399	Korea Telecom	2,097,152
121.128.0.0/11	AS38412	Korea Telecom	2,097,152
121.128.0.0/11	AS38697	Korea Telecom	2,097,152
121.128.0.0/11	AS45401	Korea Telecom	2,097,152
121.128.0.0/11	AS45404	Korea Telecom	2,097,152
121.128.0.0/11	AS46002	Korea Telecom	2,097,152
121.128.0.0/11	AS46009	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS4790	Korea Telecom	2,097,152
121.128.0.0/11	AS55592	Korea Telecom	2,097,152
121.128.0.0/11	AS55593	Korea Telecom	2,097,152
121.128.0.0/11	AS55630	Korea Telecom	2,097,152
121.128.0.0/11	AS9273	Korea Telecom	2,097,152
121.128.0.0/11	AS9526	Korea Telecom	2,097,152
121.128.0.0/11	AS9530	Korea Telecom	2,097,152
121.128.0.0/11	AS9638	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.128.0.0/11	AS9684	Korea Telecom	2,097,152
121.128.0.0/11	AS9696	Korea Telecom	2,097,152
121.128.0.0/11	AS9776	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS9862	Korea Telecom	2,097,152
121.128.0.0/11	AS9870	Korea Telecom	2,097,152
121.128.0.0/11	AS9968	Korea Telecom	2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.137.0.0/16

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS10040	Korea Telecom	2,097,152
121.128.0.0/11	AS131792	Korea Telecom	2,097,152
121.128.0.0/11	AS152214	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS17834	Korea Telecom	2,097,152
121.128.0.0/11	AS18023	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS23591	Korea Telecom	2,097,152
121.128.0.0/11	AS3786	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS38126	Korea Telecom	2,097,152
121.128.0.0/11	AS38394	Korea Telecom	2,097,152
121.128.0.0/11	AS38395	Korea Telecom	2,097,152
121.128.0.0/11	AS38399	Korea Telecom	2,097,152
121.128.0.0/11	AS38412	Korea Telecom	2,097,152
121.128.0.0/11	AS38697	Korea Telecom	2,097,152
121.128.0.0/11	AS45401	Korea Telecom	2,097,152
121.128.0.0/11	AS45404	Korea Telecom	2,097,152
121.128.0.0/11	AS46002	Korea Telecom	2,097,152
121.128.0.0/11	AS46009	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS4790	Korea Telecom	2,097,152
121.128.0.0/11	AS55592	Korea Telecom	2,097,152
121.128.0.0/11	AS55593	Korea Telecom	2,097,152
121.128.0.0/11	AS55630	Korea Telecom	2,097,152
121.128.0.0/11	AS9273	Korea Telecom	2,097,152
121.128.0.0/11	AS9526	Korea Telecom	2,097,152
121.128.0.0/11	AS9530	Korea Telecom	2,097,152
121.128.0.0/11	AS9638	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.128.0.0/11	AS9684	Korea Telecom	2,097,152
121.128.0.0/11	AS9696	Korea Telecom	2,097,152
121.128.0.0/11	AS9776	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS9862	Korea Telecom	2,097,152
121.128.0.0/11	AS9870	Korea Telecom	2,097,152
121.128.0.0/11	AS9968	Korea Telecom	2,097,152

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

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

IP Address	ASN	Details
121.137.89.30	AS4766 Korea Telecom	`1.44ms` 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
162.241.239.24	AS19871 Network Solutions, LLC	`0.90ms` from Atlanta, US
73.20.222.56	AS7922 Comcast Cable Communications, LLC	`11.45ms` from Atlanta, US
34.211.81.200	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
66.68.162.200	AS11427 Charter Communications Inc	`5.05ms` from Dallas, US
38.238.127.88	AS134548 DXTL Tseung Kwan O Service	`0.74ms` from Hong Kong, HK
218.57.61.120	AS4837 CHINA UNICOM China169 Backbone	`6.69ms` from Jinan, CN
43.175.255.8	AS139341 ACE	`0.11ms` from Los Angeles, US
173.68.76.104	AS701 Verizon Business	`2.48ms` from New York City, US
27.196.134.184	AS4837 CHINA UNICOM China169 Backbone	`8.36ms` from Qingdao, CN
181.175.154.56	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`6.29ms` from Quito, EC
43.130.56.72	AS132203 Tencent Building, Kejizhongyi Avenue	`0.24ms` from San Jose, US
163.125.180.88	AS17623 China Unicom Shenzen network	`4.95ms` from Shenzhen, CN
162.142.75.72	AS399035 Lambton Communications Limited	`5.66ms` from Toronto, CA
39.101.132.24	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.71ms` from Zhangjiakou, CN
120.12.125.24	AS4837 CHINA UNICOM China169 Backbone	`6.56ms` from Beijing, CN
221.10.172.248	AS4837 CHINA UNICOM China169 Backbone	`6.39ms` from Chengdu, CN
68.50.222.56	AS7922 Comcast Cable Communications, LLC	`9.09ms` from Chicago, US
94.60.210.152	AS12353 Vodafone Portugal	`6.21ms` from Lisbon, PT
92.239.67.248	AS5089 Virgin Media Limited	`6.88ms` from London, GB
150.244.121.216	AS766 RedIRIS Autonomous System	`1.89ms` from Madrid, ES
129.153.220.184	AS31898 Oracle Corporation	`0.24ms` from Phoenix, US
83.21.114.8	AS5617 Orange Polska Spolka Akcyjna	`16.83ms` from Poznan, PL
64.31.3.168	AS46475 Limestone Networks, Inc.	`0.12ms` from Salt Lake City, US
167.234.249.136	AS31898 Oracle Corporation	`0.28ms` from Sao Paulo, BR
178.75.213.200	AS34295 Geo BG Net SPLtd.	`4.79ms` from Sofia, BG

Traceroute

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

traceroute -a -n -q1 121.137.89.30

traceroute to 121.137.89.30 (121.137.89.30): 64 hops max, 52 byte packets

1 [AS15169] 74.125.37.114 223.261 ms

2 *

3 [AS4766] 112.174.84.154 248.718 ms

4 [AS4766] 112.174.47.130 260.099 ms

5 *

6 [AS4766] 59.12.19.210 260.406 ms

7 [AS46009] 121.137.87.2 253.809 ms

8 *

9 [AS46009] 121.137.89.30 256.388 ms

Measurement taken from

IPinfo ProbeNet in Paris, FR

On September 25th 2025

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