121.133.199.0/24

AS38395 · GwangJuHaNam Office of Education

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	South Korea
Domain	kt.com
ASN	AS38395
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.133.199.0-121.133.199.255

WHOIS Details

inetnum:            121.133.199.0 - 121.133.199.255
descr:              Korea Telecom
network-type:       CUSTOMER
address:            90 Buljeongro Bundang-Gu Seongnam-Si Gyeonggi-Do
zip-code:           13606
created:            2024-02-28
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 121.133.199.0/24

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
121.133.198.0/24	AS38394	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

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

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
2.138.124.248	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.33ms` from Madrid, ES
203.220.186.8	AS7545 TPG Telecom Limited	`1.57ms` from Melbourne, AU
189.144.153.216	AS8151 UNINET	`1.03ms` from Mexico City, MX
178.86.233.200	AS25019 Saudi Telecom Company JSC	`2.95ms` from Riyadh, SA
35.216.8.8	AS15169 Google LLC	`0.10ms` from Seoul, KR
31.146.111.24	AS35805 JSC "Silknet"	`5.28ms` from Tbilisi, GE
84.41.184.168	AS33915 Vodafone Libertel B.V.	`1.08ms` from Amsterdam, NL
74.124.156.8	AS15313 Pembroke Telephone Company, Inc.	`5.44ms` from Atlanta, US
216.231.167.168	AS22561 CenturyLink Communications, LLC	`10.92ms` from Atlanta, US
34.45.140.88	AS396982 Google LLC	`0.36ms` from Council Bluffs, US
80.134.5.8	AS3320 Deutsche Telekom AG	`4.15ms` from Duesseldorf, DE
121.203.130.168	AS17924 SmarTone Mobile Communications Ltd	`12.07ms` from Hong Kong, HK
82.110.233.72	AS3257 GTT Communications Inc.	`8.62ms` from London, GB
195.50.103.104	AS3356 Level 3 Parent, LLC	`0.86ms` from London, GB
72.203.27.120	AS22773 Cox Communications Inc.	`9.33ms` from Los Angeles, US
35.204.228.120	AS396982 Google LLC	`0.12ms` from Oudeschip, NL
38.22.56.56	AS174 Cogent Communications, LLC	`0.63ms` from San Diego, US
222.121.150.184	AS4766 Korea Telecom	`2.38ms` from Seoul, KR
211.127.213.216	AS4725 SoftBank Corp.	`4.96ms` from Tokyo, JP
172.105.226.104	AS63949 Akamai Connected Cloud	`0.12ms` from Tokyo, JP
131.214.235.232	AS668 United States Department of Defense (DoD)	`2.70ms` from Ashburn, US
100.6.99.232	AS701 Verizon Business	`6.39ms` from Ashburn, US
16.145.47.184	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
91.21.68.72	AS3320 Deutsche Telekom AG	`3.76ms` from Duesseldorf, DE
212.221.223.56	AS207995 LF Holdco 2 Limited	`2.99ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f4 -m15 121.133.199.11

traceroute to 121.133.199.11 (121.133.199.11): 15 hops max, 52 byte packets

4 [AS3356] 4.68.62.233 1.606 ms

5 *

6 [AS3356] 4.68.37.206 114.288 ms

7 [AS4766] 112.174.87.213 242.538 ms

8 [AS4766] 112.174.91.177 242.589 ms

9 *

10 *

11 [AS4766] 112.189.143.230 251.877 ms

12 [AS38395] 124.138.164.193 249.044 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Quito, EC

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales