210.121.135.0/24

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 210.121.135.0/24

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
210.121.135.191	AS55627 Dongduk Womens University	`2.06ms` 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
92.64.84.120	AS1136 KPN B.V.	`0.50ms` from Amsterdam, NL
176.102.98.24	AS57547 WIRIX, s.r.o.	`0.66ms` from Bratislava, SK
45.141.56.168	AS213373 IP Connect Inc	`0.18ms` from Dronten, NL
24.65.26.120	AS6327 Shaw Communications	`8.48ms` from Edmonton, CA
45.225.37.8	AS266921 Mundial Station	`12.38ms` from Fortaleza, BR
92.131.2.200	AS3215 Orange S.A.	`6.23ms` from Frankfurt am Main, DE
93.67.30.120	AS30722 Fastweb SpA	`4.50ms` from Frosinone, IT
176.38.193.8	AS39608 Lanet Network Ltd	`0.77ms` from Kyiv, UA
98.225.66.136	AS7922 Comcast Cable Communications, LLC	`15.05ms` from Los Angeles, US
101.65.160.184	AS4837 CHINA UNICOM China169 Backbone	`10.73ms` from Ningbo, CN
114.161.101.24	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.24ms` from Osaka, JP
179.218.44.24	AS28573 Claro NXT Telecomunicacoes Ltda	`1.78ms` from Rio de Janeiro, BR
76.178.140.136	AS10838 Charter Communications Inc	`15.04ms` from Seattle, US
113.239.200.88	AS4837 CHINA UNICOM China169 Backbone	`11.88ms` from Tieling, CN
124.142.151.248	AS9824 JCOM Co., Ltd.	`13.36ms` from Tokyo, JP
5.8.154.8	AS31126 SODETEL S.A.L.	`3.34ms` from Tripoli, LB
4.175.86.120	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
41.141.247.136	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.06ms` from Casablanca, MA
136.112.228.24	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
85.204.27.184	AS50840 Marek Bajerski trading as HITME.PL	`0.12ms` from Gdynia, PL
36.71.222.136	AS7713 PT Telekomunikasi Indonesia	`1.52ms` from Jakarta, ID
145.232.230.248	AS15675 Direction des Systemes d'Information, Etat de Vaud	`2.02ms` from Lausanne, CH
82.34.194.200	AS5089 Virgin Media Limited	`14.48ms` from Maidenhead, GB
93.39.128.40	AS12874 Fastweb SpA	`1.14ms` from Milan, IT
68.195.115.152	AS6128 Cablevision Systems Corp.	`8.73ms` from Morris Plains, US

Traceroute

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

traceroute -a -n -q1 210.121.135.248

traceroute to 210.121.135.248 (210.121.135.248): 64 hops max, 52 byte packets

1 [AS15169] 72.14.236.39 187.798 ms

2 *

3 *

4 [AS3786] 61.42.202.93 226.12 ms

5 [AS3786] 1.208.112.166 195.896 ms

6 *

7 [AS3786] 1.208.144.46 196.027 ms

8 [AS3786] 1.208.140.50 223.034 ms

9 [AS3786] 118.128.27.234 196.602 ms

10 [AS55627] 210.121.137.5 223.003 ms

11 [AS55627] 210.121.137.3 224.164 ms

12 *

13 *

14 [AS55627] 210.121.135.248 220 ms

Measurement taken from

IPinfo ProbeNet in Toronto, CA

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.

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