121.134.234.0/24

AS18333 · at(Korea Argo-Fisheries Food Trade Corporation)

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Summary

Country	South Korea
Domain	kt.com
ASN	AS18333
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 121.134.234.0/24

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 121.134.0.0/16

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

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
83.212.9.24	AS5408 National Infrastructures for Research and Technology S.A.	`1.37ms` from Athens, GR
187.157.63.216	AS8151 UNINET	`15.48ms` from Cancún, MX
204.38.48.168	AS237 Merit Network Inc.	`12.14ms` from Chicago, US
81.49.74.184	AS3215 Orange S.A.	`9.00ms` from Paris, FR
125.242.51.120	AS17858 LG POWERCOMM	`2.11ms` from Seoul, KR
162.133.76.152	AS36351 IBM Cloud	`0.62ms` from Tokyo, JP
157.107.37.152	AS4685 Asahi Net	`2.37ms` from Tokyo, JP
146.148.7.232	AS396982 Google LLC	`0.15ms` from Brussels, BE
197.51.238.72	AS8452 TE-AS	`8.19ms` from Cairo, EG
3.65.208.152	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
80.147.210.56	AS3320 Deutsche Telekom AG	`3.20ms` from Frankfurt am Main, DE
203.195.158.72	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.96ms` from Guangzhou, CN
42.194.225.232	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.19ms` from Guangzhou, CN
116.126.118.88	AS9318 SK Broadband Co Ltd	`2.69ms` from Incheon, KR
111.16.216.40	AS24444 Shandong Mobile Communication Company Limited	`6.49ms` from Jinan, CN
81.132.232.248	AS2856 British Telecommunications PLC	`3.90ms` from London, GB
38.63.241.216	AS398823 PEG TECH INC	`8.30ms` from Los Angeles, US
15.161.20.232	AS16509 Amazon.com, Inc.	`0.17ms` from Milan, IT
179.97.141.136	AS19182 TELEFÔNICA BRASIL S.A	`2.31ms` from Osasco, BR
119.162.36.136	AS4837 CHINA UNICOM China169 Backbone	`6.30ms` from Qingdao, CN
63.192.185.8	AS7018 AT&T Enterprises, LLC	`6.47ms` from Redding, US
177.54.112.40	AS53142 Friburgo Online LTDA ME	`2.19ms` from Rio de Janeiro, BR
190.100.235.88	AS22047 VTR BANDA ANCHA S.A.	`1.10ms` from Santiago, CL
116.121.109.72	AS9318 SK Broadband Co Ltd	`3.65ms` from Seoul, KR
60.112.202.184	AS17676 SoftBank Corp.	`3.07ms` 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 -f3 -m7 121.134.234.120

traceroute to 121.134.234.120 (121.134.234.120): 7 hops max, 52 byte packets

3 [AS12570] 212.96.178.177 1.096 ms

4 [AS12570] 212.96.178.38 1.483 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brno, CZ

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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