210.121.140.0/24

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:        hostmaster@nic.or.kr 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:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 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:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 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 210.121.140.0/24

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

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

IP Address	ASN	Details
210.121.140.240	AS55627 Dongduk Womens University	`2.21ms` from Incheon, 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
51.222.211.56	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
50.105.74.56	AS5650 Frontier Communications of America, Inc.	`10.17ms` from Chicago, US
77.179.173.216	AS6805 Telefonica Germany GmbH & Co.OHG	`2.54ms` from Frankfurt am Main, DE
1.247.181.136	AS9318 SK Broadband Co Ltd	`2.68ms` from Incheon, KR
118.218.49.200	AS9318 SK Broadband Co Ltd	`1.16ms` from Incheon, KR
175.243.89.248	AS4766 Korea Telecom	`6.96ms` from Seoul, KR
61.129.65.120	AS4811 China Telecom (Group)	`2.39ms` from Shanghai, CN
13.237.254.216	AS16509 Amazon.com, Inc.	`0.16ms` from Sydney, AU
122.202.9.152	AS45838 Anticlockwise Pty Ltd	`0.78ms` from Sydney, AU
20.89.133.8	AS8075 Microsoft Corporation	`0.16ms` from Tokyo, JP
109.242.96.248	AS25472 Nova Telecommunications & Media Single Member S.A	`10.04ms` from Volos, GR
84.147.43.136	AS3320 Deutsche Telekom AG	`4.58ms` from Duesseldorf, DE
94.72.172.152	AS15943 wilhelm.tel GmbH	`0.45ms` from Hamburg, DE
43.100.106.56	AS45102 Alibaba (US) Technology Co., Ltd.	`0.58ms` from Hong Kong, HK
172.91.141.56	AS20001 Charter Communications Inc	`6.38ms` from Los Angeles, US
195.40.166.24	AS212238 Datacamp Limited	`0.14ms` from Madrid, ES
13.202.152.88	AS16509 Amazon.com, Inc.	`0.12ms` from Mumbai, IN
98.2.245.120	AS11351 Charter Communications Inc	`12.71ms` from New York City, US
188.232.234.216	AS41843 JSC ER-Telecom Holding	`8.86ms` from Novosibirsk, RU
160.8.243.24	AS14340 Salesforce.com, Inc.	`0.53ms` from Paris, FR
76.138.151.40	AS7922 Comcast Cable Communications, LLC	`2.01ms` from Portland, US
195.114.167.104	AS12741 Netia SA	`17.73ms` from Poznan, PL
79.53.146.232	AS3269 Telecom Italia S.p.A.	`2.28ms` from Rome, IT
66.183.163.8	AS852 TELUS Communications Inc.	`8.14ms` from Seattle, US
188.214.233.120	AS5065 Bunny Communications	`0.49ms` from Singapore, SG

Traceroute

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

traceroute -a -n -q1 -f4 -m16 210.121.140.35

traceroute to 210.121.140.35 (210.121.140.35): 16 hops max, 52 byte packets

4 [] 193.239.117.168 9.229 ms

5 *

6 *

7 *

8 *

9 [AS3786] 1.213.107.98 208.212 ms

10 [AS3786] 1.213.141.10 201.144 ms

11 [AS3786] 118.128.27.234 206.665 ms

12 [AS55627] 210.121.137.5 202.73 ms

13 [AS55627] 210.121.137.3 206.238 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Paris, FR

On January 19th 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