210.121.138.0/24

AS55627 · Dongduk Womens 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	AS55627
Parent Range	210.121.128.0/17
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.121.128.0 - 210.121.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC


person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         [email protected]
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         [email protected]
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 210.121.138.0/24

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768

Nearby Ranges

BGP prefixes that overlap with 210.121.0.0/16

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.0.0/17	AS45374	SEJONG NETWORKS	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.0.0/17	AS9848	SEJONG NETWORKS	32,768

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

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

IP Address	ASN	Details
210.121.138.11	AS55627 Dongduk Womens University	`2.21ms` 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
24.27.69.248	AS11427 Charter Communications Inc	`3.64ms` from Dallas, US
54.216.20.8	AS16509 Amazon.com, Inc.	`0.26ms` from Dublin, IE
220.201.235.152	AS4837 CHINA UNICOM China169 Backbone	`5.95ms` from Harbin, CN
50.39.15.24	AS5650 Frontier Communications of America, Inc.	`10.61ms` from Los Angeles, US
158.158.61.136	AS8075 Microsoft Corporation	`0.14ms` from Madrid, ES
90.104.99.40	AS3215 Orange S.A.	`8.24ms` from Paris, FR
39.89.25.40	AS4837 CHINA UNICOM China169 Backbone	`1.63ms` from Qingdao, CN
209.121.10.8	AS852 TELUS Communications Inc.	`3.49ms` from Seattle, US
69.206.47.216	AS12271 Charter Communications Inc	`7.70ms` from Secaucus, US
163.44.42.24	AS2514 NTT PC Communications, Inc.	`2.23ms` from Tokyo, JP
41.104.230.88	AS36947 Telecom Algeria	`13.67ms` from Valencia, ES
71.135.81.136	AS7018 AT&T Enterprises, LLC	`6.86ms` from Atlanta, US
194.29.234.216	AS20647 IPB Internet Provider in Berlin GmbH	`0.33ms` from Berlin, DE
102.162.69.40	AS30999 EMTEL LIMITED	`15.58ms` from Ebene, MU
135.220.33.40	AS8075 Microsoft Corporation	`0.21ms` from Frankfurt am Main, DE
103.127.250.248	AS138527 ADC GROUP CO.,LIMITED	`0.90ms` from Hong Kong, HK
47.240.10.216	AS45102 Alibaba (US) Technology Co., Ltd.	`0.96ms` from Hong Kong, HK
98.199.163.8	AS7922 Comcast Cable Communications, LLC	`6.63ms` from Houston, US
59.62.6.56	AS4134 CHINANET-BACKBONE	`6.17ms` from Nanchang, CN
202.226.241.104	AS7679 QTnet,Inc.	`7.32ms` from Osaka, JP
91.168.132.72	AS12322 Free SAS	`7.97ms` from Paris, FR
94.92.50.152	AS3269 Telecom Italia S.p.A.	`4.04ms` from Rome, IT
23.213.21.56	AS16625 Akamai Technologies, Inc.	`0.14ms` from Seattle, US
183.106.90.184	AS4766 Korea Telecom	`6.47ms` from Seoul, KR
113.205.1.24	AS4837 CHINA UNICOM China169 Backbone	`1.22ms` from Chongqing, CN

Traceroute

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

traceroute -a -n -q1 -f2 210.121.138.11

traceroute to 210.121.138.11 (210.121.138.11): 64 hops max, 52 byte packets

2 [AS15694] 46.229.157.217 3.677 ms

3 [] 193.239.117.168 213.823 ms

4 *

5 [AS3786] 1.208.167.37 253.923 ms

6 *

7 *

8 [AS3786] 1.213.107.98 235.658 ms

9 [AS3786] 1.208.141.26 379.363 ms

10 [AS3786] 118.128.27.234 248.232 ms

11 [AS55627] 210.121.137.5 234.072 ms

12 [AS55627] 210.121.137.4 239.08 ms

13 *

14 [AS55627] 210.121.138.11 230.076 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On December 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