210.121.131.0/24

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 210.121.131.0/24

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

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

IP Address	ASN	Details
210.121.131.240	AS55627 Dongduk Womens University	`2.08ms` 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
125.253.24.24	AS38195 Superloop	`0.90ms` from Brisbane, AU
3.254.160.24	AS16509 Amazon.com, Inc.	`0.45ms` from Dublin, IE
87.176.25.248	AS3320 Deutsche Telekom AG	`4.35ms` from Frankfurt am Main, DE
217.43.97.24	AS2856 British Telecommunications PLC	`6.58ms` from London, GB
76.87.73.40	AS20001 Charter Communications Inc	`5.53ms` from Los Angeles, US
138.23.178.72	AS6106 University of California, Riverside	`4.84ms` from Los Angeles, US
88.0.53.200	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.41ms` from Madrid, ES
60.136.50.120	AS17676 SoftBank Corp.	`7.47ms` from Osaka, JP
27.196.112.216	AS4837 CHINA UNICOM China169 Backbone	`8.20ms` from Qingdao, CN
16.15.196.104	AS14618 Amazon.com, Inc.	`0.11ms` from Reston, US
151.53.100.152	AS1267 WIND TRE S.P.A.	`6.64ms` from Rome, IT
171.120.80.40	AS4837 CHINA UNICOM China169 Backbone	`3.46ms` from Taiyuan, CN
153.214.0.24	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.19ms` from Tokyo, JP
8.31.232.40	AS53780 APPRIVER LLC	`0.79ms` from Atlanta, US
89.57.82.8	AS207790 SWN Stadtwerke Neumuenster GmbH	`2.12ms` from Hamburg, DE
92.219.166.24	AS3209 Vodafone GmbH	`7.39ms` from Hamburg, DE
39.152.101.24	AS56044 China Mobile communications corporation	`8.56ms` from Liaoyang, CN
31.190.207.248	AS1267 WIND TRE S.P.A.	`2.08ms` from Milan, IT
180.10.252.24	AS4713 NTT DOCOMO BUSINESS,Inc.	`1.32ms` from Osaka, JP
83.251.40.72	AS1257 Tele2 Sverige AB	`2.08ms` from Stockholm, SE
124.94.170.88	AS4837 CHINA UNICOM China169 Backbone	`0.84ms` from Tieling, CN
102.26.229.184	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`13.29ms` from Tunis, TN
5.181.41.184	AS30633 Leaseweb USA, Inc.	`0.07ms` from Washington, US
185.89.4.88	AS48635 Your Hosting B.V.	`0.25ms` from Amsterdam, NL
206.247.58.40	AS30103 Zoom Video Communications, Inc	`0.17ms` from Ashburn, US

Traceroute

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

traceroute -a -n -q1 -f7 210.121.131.77

traceroute to 210.121.131.77 (210.121.131.77): 64 hops max, 52 byte packets

7 [AS3786] 1.213.106.234 6.01 ms

8 [AS3786] 1.213.140.22 2.35 ms

9 [AS3786] 118.128.27.234 2.565 ms

10 [AS55627] 210.121.137.5 1.933 ms

11 [AS55627] 210.121.137.3 2.351 ms

12 *

13 *

14 *

15 [AS55627] 210.121.131.77 2.534 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 30th 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.

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