210.121.133.0/24

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 210.121.133.0/24

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

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

IP Address	ASN	Details
210.121.133.240	AS55627 Dongduk Womens University	`1.94ms` 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
197.204.149.248	AS36947 Telecom Algeria	`18.52ms` from Algiers, DZ
24.62.206.136	AS7922 Comcast Cable Communications, LLC	`8.68ms` from Boston, US
20.12.72.104	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
97.70.241.120	AS33363 Charter Communications, Inc	`9.08ms` from Chicago, US
97.209.243.104	AS6167 Verizon Business	`16.40ms` from Chicago, US
113.207.70.8	AS4837 CHINA UNICOM China169 Backbone	`0.34ms` from Chongqing, CN
35.194.49.200	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
123.100.227.8	AS16276 OVH SAS	`0.15ms` from Erith, GB
43.216.90.184	AS16509 Amazon.com, Inc.	`0.84ms` from Kuala Lumpur, MY
2.122.76.8	AS5607 Sky UK Limited	`0.91ms` from London, GB
18.154.143.248	AS16509 Amazon.com, Inc.	`0.30ms` from Los Angeles, US
217.29.167.120	AS3302 Retelit Digital Services S.p.A.	`0.31ms` from Milan, IT
66.110.172.40	AS852 TELUS Communications Inc.	`4.23ms` from Montreal, CA
72.68.208.40	AS701 Verizon Business	`2.80ms` from New York City, US
122.236.9.136	AS4134 CHINANET-BACKBONE	`4.63ms` from Ningbo, CN
222.109.171.136	AS4766 Korea Telecom	`1.33ms` from Seoul, KR
200.93.122.8	AS8048 CANTV Servicios, Venezuela	`10.29ms` from Willemstad, CW
36.99.83.200	AS137687 Luoyang, Henan Province, P.R.China.	`3.37ms` from Zhengzhou, CN
86.93.132.72	AS1136 KPN B.V.	`3.25ms` from Amsterdam, NL
24.1.2.56	AS7922 Comcast Cable Communications, LLC	`6.00ms` from Chicago, US
107.10.46.40	AS10796 Charter Communications Inc	`5.73ms` from Cleveland, US
97.139.194.168	AS6167 Verizon Business	`7.21ms` from Denver, US
112.92.46.8	AS17816 China Unicom IP network China169 Guangdong province	`12.18ms` from Guangzhou, CN
223.6.183.56	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`8.04ms` from Hangzhou, CN
36.84.134.184	AS7713 PT Telekomunikasi Indonesia	`1.43ms` from Jakarta, ID

Traceroute

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

traceroute -a -n -q1 -f10 210.121.133.83

traceroute to 210.121.133.83 (210.121.133.83): 64 hops max, 52 byte packets

10 [AS3786] 1.213.106.234 3.008 ms

11 [AS3786] 1.208.140.50 2.142 ms

12 [AS3786] 118.128.27.234 2.854 ms

13 [AS55627] 210.121.137.5 2.333 ms

14 [AS55627] 210.121.137.3 2.907 ms

15 *

16 *

17 [AS55627] 210.121.133.83 2.42 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

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