121.144.144.0/23

AS9870 · DONG-EUI UNIVERSITY

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	AS9870
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.144.144.0-121.144.144.255

WHOIS Details

inetnum:            121.144.144.0 - 121.144.144.255
descr:              Donguidaehakgyo
network-type:       CUSTOMER
address:            Gaya1-Dong Busanjin-Gu Busangwangyeok-Si
zip-code:           614-011
created:            2015-03-17
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:             [email protected]
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 121.144.144.0/23

Range	ASN	Company	Num of IPs
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	AS9647	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.144.0.0/16

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	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
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.144.249.0/24	AS18023	Haeyangdaehakgyo	256
121.144.250.0/24	AS18023	Haeyangdaehakgyo	256
121.144.149.0/24	AS9870	Donguidaehakgyo	256
121.144.148.0/24	AS9870	Donguidaehakgyo	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
51.124.88.199	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
73.12.54.183	AS7922 Comcast Cable Communications, LLC	`9.24ms` from Ashburn, US
175.6.239.7	AS63838 Hengyang	`2.44ms` from Chenzhou, CN
49.131.228.39	AS17924 SmarTone Mobile Communications Ltd	`11.69ms` from Hong Kong, HK
23.219.190.215	AS23693 PT. Telekomunikasi Selular	`1.22ms` from Jakarta, ID
180.130.150.247	AS4837 CHINA UNICOM China169 Backbone	`6.01ms` from Kunming, CN
128.119.213.247	AS1249 University of Massachusetts - AMHERST	`8.79ms` from New York City, US
78.193.23.23	AS12322 Free SAS	`1.38ms` from Paris, FR
213.100.182.7	AS1257 Tele2 Sverige AB	`14.11ms` from Riga, LV
75.169.1.167	AS209 CenturyLink Communications, LLC	`3.03ms` from Salt Lake City, US
52.53.150.167	AS16509 Amazon.com, Inc.	`0.13ms` from San Jose, US
67.121.15.39	AS7018 AT&T Enterprises, LLC	`4.83ms` from San Jose, US
98.237.187.135	AS7922 Comcast Cable Communications, LLC	`6.57ms` from Seattle, US
5.138.223.71	AS12389 PJSC Rostelecom	`14.21ms` from Tbilisi, GE
126.203.211.167	AS17676 SoftBank Corp.	`3.23ms` from Tokyo, JP
99.74.207.167	AS7018 AT&T Enterprises, LLC	`1.99ms` from Atlanta, US
104.102.47.39	AS16625 Akamai Technologies, Inc.	`0.34ms` from Frankfurt am Main, DE
81.154.78.199	AS2856 British Telecommunications PLC	`3.71ms` from London, GB
82.152.15.183	AS3257 GTT Communications Inc.	`0.80ms` from London, GB
176.144.156.71	AS5410 Bouygues Telecom SA	`7.99ms` from Marseille, FR
122.196.202.87	AS9617 JCOM Co., Ltd.	`9.15ms` from Osaka, JP
83.159.226.199	AS12322 Free SAS	`12.91ms` from Paris, FR
118.219.52.23	AS9318 SK Broadband Co Ltd	`1.60ms` from Seoul, KR
13.115.182.167	AS16509 Amazon.com, Inc.	`0.20ms` from Tokyo, JP
124.219.156.103	AS2527 Sony Network Communications Inc.	`2.27ms` 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 121.144.144.253

traceroute to 121.144.144.253 (121.144.144.253): 7 hops max, 52 byte packets

3 [AS9002] 87.245.232.217 15.255 ms

4 [] 193.188.137.175 14.044 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Kyiv, UA

On November 28th 2025

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