210.121.140.0/24

AS55627 · Dongduk Womens University

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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:        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

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

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
210.121.140.1	AS55627 Dongduk Womens University	`2.15ms` 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
79.107.111.248	AS25472 Nova Telecommunications & Media Single Member S.A	`8.82ms` from Athens, GR
186.141.110.168	AS22927 Telefonica de Argentina	`11.54ms` from Buenos Aires, AR
34.240.144.232	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
43.100.106.56	AS45102 Alibaba (US) Technology Co., Ltd.	`0.63ms` from Hong Kong, HK
99.88.37.56	AS7018 AT&T Enterprises, LLC	`2.12ms` from Houston, US
3.83.77.232	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
49.254.83.104	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
221.148.183.168	AS4766 Korea Telecom	`1.58ms` from Seoul, KR
118.50.10.232	AS4766 Korea Telecom	`1.64ms` from Seoul, KR
40.112.9.104	AS8075 Microsoft Corporation	`1.75ms` from Singapore, SG
1.75.151.8	AS9605 NTT DOCOMO, INC.	`2.69ms` from Tokyo, JP
197.2.33.8	AS37705 TOPNET	`2.14ms` from Tunis, TN
36.133.214.232	AS9808 China Mobile Communications Group Co., Ltd.	`1.41ms` from Zhengzhou, CN
158.94.119.104	AS7029 Windstream Communications LLC	`0.78ms` from Ashburn, US
188.136.162.104	AS24631 Tose'h Fanavari Ertebabat Pasargad Arian Co. PJS	`19.63ms` from Baku, AZ
52.247.33.8	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US
98.121.15.216	AS11426 Charter Communications Inc	`8.63ms` from Charlotte, US
47.83.204.216	AS45102 Alibaba (US) Technology Co., Ltd.	`0.48ms` from Hong Kong, HK
98.151.109.72	AS20001 Charter Communications Inc	`10.72ms` from Honolulu, US
14.55.217.24	AS4766 Korea Telecom	`6.15ms` from Incheon, KR
45.61.151.8	AS14956 RouterHosting LLC	`0.26ms` from Las Vegas, US
151.71.150.8	AS1267 WIND TRE S.P.A.	`8.91ms` from Milan, IT
185.31.134.200	AS47440 BUSINESS SYSTEM TELEHOUSE, OOO	`1.04ms` from Moscow, RU
101.1.182.136	AS7522 STNet, Incorporated	`4.89ms` from Osaka, JP
125.4.222.104	AS9617 JCOM Co., Ltd.	`6.84ms` from Osaka, 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 210.121.140.1

traceroute to 210.121.140.1 (210.121.140.1): 64 hops max, 52 byte packets

2 [AS16509] 52.93.141.184 62.714 ms

3 [AS16509] 99.83.90.181 60.949 ms

4 [AS3786] 1.208.115.253 60.975 ms

5 [AS3786] 1.208.148.97 219.183 ms

6 *

7 *

8 [AS3786] 1.208.114.166 206.317 ms

9 [AS3786] 1.213.140.22 208.654 ms

10 [AS3786] 118.128.27.234 205.675 ms

11 [AS55627] 210.121.137.5 210.525 ms

12 [AS55627] 210.121.137.3 208.712 ms

13 *

14 *

15 [AS55627] 210.121.140.1 209.022 ms

Measurement taken from

IPinfo ProbeNet in Reston, US

On January 30th 2026

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