121.133.198.0/24

AS38394 · Gyeonggido Seongnam Office of Education

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Summary

Country	South Korea
Domain	kt.com
ASN	AS38394
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.133.198.0-121.133.198.255

WHOIS Details

inetnum:            121.133.198.0 - 121.133.198.255
descr:              Korea Telecom
network-type:       CUSTOMER
address:            KT Corporation jeongja-dong Bundang_gu, Seongnam-si Gyeonggi-do
zip-code:           463711
created:            2016-12-09
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 121.133.198.0/24

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 121.133.0.0/16

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
121.133.209.0/24	AS38412	Korea Telecom	256
121.133.199.0/24	AS38395	Korea Telecom	256
121.133.203.0/24	AS38399	Korea Telecom	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
88.84.156.168	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.47ms` from Amsterdam, NL
52.168.136.40	AS8075 Microsoft Corporation	`0.34ms` from Ashburn, US
39.156.176.40	AS9808 China Mobile Communications Group Co., Ltd.	`0.60ms` from Beijing, CN
50.4.67.40	AS12083 WideOpenWest Finance LLC	`12.89ms` from Chicago, US
43.138.218.72	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.98ms` from Guangzhou, CN
14.226.70.56	AS45899 VNPT Corp	`5.81ms` from Hanoi, VN
125.179.67.40	AS17858 LG POWERCOMM	`2.25ms` from Incheon, KR
211.211.193.56	AS9318 SK Broadband Co Ltd	`7.25ms` from Incheon, KR
151.245.211.184	AS2856 British Telecommunications PLC	`1.80ms` from London, GB
189.136.208.168	AS8151 UNINET	`2.80ms` from Mexico City, MX
34.118.162.72	AS396982 Google LLC	`0.08ms` from Montreal, CA
153.221.244.168	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.84ms` from Osaka, JP
209.184.13.40	AS20035 Broadway National Bank	`3.50ms` from San Antonio, US
125.168.70.168	AS9443 Vocus Retail	`1.92ms` from Adelaide, AU
92.130.64.200	AS3215 Orange S.A.	`18.84ms` from Antananarivo, MG
177.199.4.216	AS26599 TELEFÔNICA BRASIL S.A	`8.94ms` from Brasilia, BR
216.182.132.136	AS25935 Erie 1 BOCES	`1.01ms` from Buffalo, US
144.160.20.152	AS797 AT&T Services, Inc.	`7.83ms` from Chicago, US
76.194.69.72	AS7018 AT&T Enterprises, LLC	`8.46ms` from Dallas, US
15.156.71.104	AS16509 Amazon.com, Inc.	`0.88ms` from Montreal, CA
193.252.9.72	AS3215 Orange S.A.	`2.06ms` from Paris, FR
4.151.177.24	AS8075 Microsoft Corporation	`0.22ms` from San Antonio, US
45.5.30.56	AS265706 WIANET SOLUTIONS	`4.01ms` from San Pedro Sula, HN
119.196.103.8	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
103.3.196.104	AS55871 IRESS Market Technology Ltd	`0.64ms` from Sydney, AU

Traceroute

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

traceroute -a -n -q1 -f2 -m13 121.133.198.196

traceroute to 121.133.198.196 (121.133.198.196): 13 hops max, 52 byte packets

2 [AS3257] 212.222.5.89 0.321 ms

3 [AS3257] 89.149.130.54 149.908 ms

4 *

5 *

6 [AS4766] 112.174.91.221 263.313 ms

7 *

8 *

9 [AS4766] 112.189.143.226 275.396 ms

10 [AS38394] 1.238.16.5 268.572 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On February 7th 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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