121.135.55.0/24

AS38697 · Hankyong National Univercity

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Summary

Country	South Korea
Domain	kt.com
ASN	AS38697
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.135.55.0-121.135.55.255

WHOIS Details

inetnum:            121.135.55.0 - 121.135.55.255
descr:              Hangyeongdaehakgyo
network-type:       CUSTOMER
address:            Seokjeong-Dong Anseong-Si Gyeonggi-Do
zip-code:           456-240
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:              +82-2-500-6631
e-mail:             kornet_ip@kt.com
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 121.135.55.0/24

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 121.135.0.0/16

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
121.135.56.0/24	AS38697	Hangyeongdaehakgyo	256
121.135.147.0/24	AS46002	(ju)pyeonghwaijeu	256
121.135.148.0/24	AS46002	(ju)pyeonghwaijeu	256
121.135.246.0/24	AS9696	Korea Telecom	256
121.135.53.0/24	AS38697	Hangyeongdaehakgyo	256
121.135.54.0/24	AS38697	Hangyeongdaehakgyo	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

25 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.135.55.185	AS38697 Hankyong National Univercity	`2.44ms` from Seoul, KR

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
118.144.179.104	AS4808 China Unicom Beijing Province Network	`4.45ms` from Beijing, CN
73.78.179.200	AS7922 Comcast Cable Communications, LLC	`9.51ms` from Denver, US
177.159.223.56	AS18881 TELEFÔNICA BRASIL S.A	`10.00ms` from Fortaleza, BR
137.205.160.168	AS201773 University of Warwick	`5.58ms` from London, GB
74.70.90.56	AS11351 Charter Communications Inc	`12.56ms` from New York City, US
123.199.60.8	AS10066 LG HelloVision Corp.	`7.98ms` from Seoul, KR
211.250.109.120	AS4766 Korea Telecom	`1.47ms` from Seoul, KR
183.97.105.200	AS4766 Korea Telecom	`1.53ms` from Seoul, KR
1.157.227.120	AS1221 Telstra Limited	`1.84ms` from Sydney, AU
102.26.252.120	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`12.27ms` from Tunis, TN
96.228.37.184	AS701 Verizon Business	`4.60ms` from Ashburn, US
177.67.142.104	AS52663 Turbo BSB Tecnologias em Rede Ltda.	`0.33ms` from Brasilia, BR
37.81.114.8	AS3320 Deutsche Telekom AG	`16.04ms` from Duesseldorf, DE
69.136.132.8	AS7922 Comcast Cable Communications, LLC	`8.57ms` from Flint, US
84.248.138.200	AS1759 Telia Finland Oyj	`4.81ms` from Helsinki, FI
116.114.103.72	AS4837 CHINA UNICOM China169 Backbone	`7.32ms` from Hohhot, CN
206.206.225.88	AS2900 Arizona Tri University Network	`8.53ms` from Los Angeles, US
37.15.95.248	AS12479 Orange Espagne SA	`8.23ms` from Madrid, ES
2.97.207.184	AS13285 TalkTalk Communications Limited	`6.61ms` from Manchester, GB
131.202.43.24	AS611 NB-PEI Educational Computer Network	`15.71ms` from Montreal, CA
95.220.4.136	AS12714 PJSC MegaFon	`1.78ms` from Moscow, RU
86.229.219.216	AS3215 Orange S.A.	`6.76ms` from Paris, FR
221.161.228.200	AS4766 Korea Telecom	`8.39ms` from Seoul, KR
118.33.118.216	AS4766 Korea Telecom	`1.12ms` from Seoul, KR
180.2.135.88	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.64ms` 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 -f2 121.135.55.23

traceroute to 121.135.55.23 (121.135.55.23): 64 hops max, 52 byte packets

2 [AS4766] 218.145.32.254 1.078 ms

3 *

4 *

5 [AS4766] 112.174.57.254 1.661 ms

6 *

7 *

8 [AS4766] 59.13.175.186 5.275 ms

9 [AS4766] 121.135.57.60 2.885 ms

10 *

11 *

12 [AS38697] 121.135.55.23 2.811 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 9th 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.

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