210.121.133.0/24

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 210.121.133.0/24

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

22 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	`1.96ms` 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
96.37.6.184	AS20115 Charter Communications LLC	`4.88ms` from Atlanta, US
194.144.203.232	AS12969 Vodafone Iceland	`1.33ms` from Hafnarfjoerdur, IS
14.169.88.152	AS45899 VNPT Corp	`1.25ms` from Ho Chi Minh City, VN
154.201.255.8	AS132839 POWER LINE DATACENTER	`1.16ms` from Hong Kong, HK
49.130.179.200	AS17924 SmarTone Mobile Communications Ltd	`11.63ms` from Hong Kong, HK
104.62.139.8	AS7018 AT&T Enterprises, LLC	`2.59ms` from Kansas City, US
74.210.245.24	AS11290 Cogeco Connexion inc	`8.24ms` from Montreal, CA
31.6.126.120	AS59815 Kompeatelecom Ltd.	`17.28ms` from Moscow, RU
220.219.114.200	AS9997 Suzuka Cable Co.,Ltd	`5.43ms` from Osaka, JP
34.201.239.24	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
60.133.0.40	AS17676 SoftBank Corp.	`7.41ms` from Tokyo, JP
102.38.11.72	AS328539 Giga for Telecommunication and Technology Limited	`2.49ms` from Tripoli, LY
83.22.150.168	AS5617 Orange Polska Spolka Akcyjna	`6.70ms` from Warsaw, PL
149.156.80.8	AS8267 Academic Computer Centre CYFRONET AGH	`10.00ms` from Warsaw, PL
112.213.46.152	AS18159 Netspeed Data Ltd	`15.65ms` from Auckland, NZ
18.236.245.184	AS16509 Amazon.com, Inc.	`0.32ms` from Boardman, US
187.152.150.24	AS8151 UNINET	`15.93ms` from Cancún, MX
18.252.95.8	AS8987 Amazon Data Services Ireland Ltd	`0.83ms` from Columbus, US
185.70.221.232	AS3209 Vodafone GmbH	`7.65ms` from Frankfurt am Main, DE
94.5.12.232	AS5607 Sky UK Limited	`4.84ms` from London, GB
83.211.47.232	AS3302 Retelit Digital Services S.p.A.	`1.02ms` from Milan, IT
123.1.102.72	AS18126 Chubu Telecommunications Company, Inc.	`7.65ms` from Osaka, JP
45.201.202.120	AS131178 EZECOM CO., LTD.	`1.00ms` from Phnom Penh, KH
82.193.74.184	AS24651 JSC BALTICOM	`0.72ms` from Riga, LV
179.152.141.56	AS28573 Claro NXT Telecomunicacoes Ltda	`6.01ms` from Rio de Janeiro, BR

Traceroute

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

traceroute -a -n -q1 -f3 210.121.133.240

traceroute to 210.121.133.240 (210.121.133.240): 64 hops max, 52 byte packets

3 [AS9002] 87.245.239.26 26.08 ms

4 *

5 [] 80.81.193.16 53.548 ms

6 *

7 *

8 *

9 *

10 [AS3786] 1.213.114.166 232.237 ms

11 [AS3786] 1.208.141.26 229.512 ms

12 [AS3786] 118.128.27.234 229.304 ms

13 [AS55627] 210.121.137.5 228.382 ms

14 [AS55627] 210.121.137.4 230.534 ms

15 *

16 *

17 [AS55627] 210.121.133.240 230.826 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On January 30th 2026

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