121.144.142.0/23

AS9870 · DONG-EUI UNIVERSITY

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Summary

Country	South Korea
Domain	kt.com
ASN	AS9870
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.144.142.0-121.144.142.255

WHOIS Details

inetnum:            121.144.142.0 - 121.144.142.255
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 121.144.142.0/23

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

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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
70.100.148.87	AS5650 Frontier Communications of America, Inc.	`14.39ms` from Chicago, US
24.127.79.215	AS7922 Comcast Cable Communications, LLC	`9.59ms` from Chicago, US
68.235.136.231	AS11650 Pioneer Long Distance Inc.	`6.82ms` from Dallas, US
79.171.78.7	AS44212 Adelphi Net1 Ltd	`2.98ms` from Dublin, IE
86.156.48.215	AS2856 British Telecommunications PLC	`2.95ms` from Erith, GB
178.38.46.103	AS6730 Sunrise GmbH	`1.94ms` from Geneve, CH
91.130.40.119	AS1257 Tele2 Sverige AB	`1.20ms` from Goeteborg, SE
178.206.202.119	AS28840 PJSC TATTELECOM	`6.24ms` from Kazan, RU
136.52.107.55	AS16591 Google Fiber Inc.	`1.73ms` from Los Angeles, US
6.6.117.231	AS668 United States Department of Defense (DoD)	`1.76ms` from Los Angeles, US
49.51.198.87	AS132203 Tencent Building, Kejizhongyi Avenue	`0.28ms` from San Jose, US
144.195.109.167	AS30103 Zoom Video Communications, Inc	`0.69ms` from San Jose, US
67.180.221.167	AS7922 Comcast Cable Communications, LLC	`3.53ms` from San Jose, US
206.0.39.215	AS264681 Sociedad de Telecomunicaciones Netsouth SPA	`16.43ms` from Santiago, CL
124.54.50.167	AS17858 LG POWERCOMM	`6.80ms` from Seoul, KR
121.182.23.119	AS4766 Korea Telecom	`4.56ms` from Seoul, KR
58.250.172.135	AS17623 China Unicom Shenzen network	`3.87ms` from Shenzhen, CN
213.91.101.55	AS57869 MISS.NET d.o.o.	`4.01ms` from Zagreb, HR
181.69.189.231	AS27831 Colombia Móvil	`1.76ms` from Bogota, CO
172.176.200.7	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
60.11.245.119	AS4837 CHINA UNICOM China169 Backbone	`15.93ms` from Changchun, CN
139.213.134.199	AS4837 CHINA UNICOM China169 Backbone	`7.35ms` from Changchun, CN
134.130.156.135	AS47610 RWTH Aachen University	`4.25ms` from Frankfurt am Main, DE
41.220.11.103	AS36901 DATANET.COM LLC	`8.61ms` from Kampala, UG
13.135.21.151	AS16509 Amazon.com, Inc.	`0.18ms` 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 -m4 121.144.142.105

traceroute to 121.144.142.105 (121.144.142.105): 4 hops max, 52 byte packets

1 [AS34689] 185.75.243.1 0.121 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Tirana, AL

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.

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