210.121.134.0/24

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:        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 210.121.134.0/24

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

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

IP Address	ASN	Details
210.121.134.240	AS55627 Dongduk Womens University	`2.11ms` 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
87.209.18.120	AS50266 Odido Netherlands B.V.	`2.98ms` from Amsterdam, NL
23.9.170.232	AS16625 Akamai Technologies, Inc.	`0.18ms` from Ashburn, US
87.154.35.248	AS3320 Deutsche Telekom AG	`5.39ms` from Duesseldorf, DE
91.3.180.200	AS3320 Deutsche Telekom AG	`8.38ms` from Frankfurt am Main, DE
211.176.49.88	AS9318 SK Broadband Co Ltd	`1.01ms` from Incheon, KR
99.124.190.56	AS7018 AT&T Enterprises, LLC	`10.35ms` from Miami, US
168.228.175.248	AS262427 Invista Net Provedor de Acesso Ltda	`5.18ms` from Osasco, BR
4.178.98.184	AS8075 Microsoft Corporation	`0.97ms` from Paris, FR
210.114.12.8	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
126.0.1.72	AS17676 SoftBank Corp.	`2.59ms` from Tokyo, JP
202.229.133.120	AS2514 NTT PC Communications, Inc.	`0.80ms` from Tokyo, JP
86.99.3.136	AS5384 Emirates Internet	`1.65ms` from Al Fujairah City, AE
92.87.211.24	AS9050 Orange Romania S.A.	`0.32ms` from Bucharest, RO
128.205.199.72	AS3685 State University of New York at Buffalo	`0.91ms` from Buffalo, US
117.196.118.8	AS9829 National Internet Backbone	`7.93ms` from Chennai, IN
93.205.13.248	AS3320 Deutsche Telekom AG	`2.18ms` from Frankfurt am Main, DE
198.160.136.200	AS30606 Baptist Health South Florida, Inc.	`1.60ms` from Miami, US
146.247.33.168	AS44507 OJSC Kostroma Municipal Telephone Network	`7.62ms` from Moscow, RU
70.19.75.40	AS701 Verizon Business	`2.61ms` from New York City, US
176.50.245.8	AS12389 PJSC Rostelecom	`10.53ms` from Novosibirsk, RU
159.100.33.152	AS34949 IDLINE SAS	`8.68ms` from Paris, FR
46.191.235.72	AS24955 JSC "Ufanet"	`7.52ms` from Samara, RU
49.171.114.120	AS17858 LG POWERCOMM	`2.96ms` from Seoul, KR
220.142.140.72	AS3462 Data Communication Business Group	`6.04ms` from Taichung, TW
219.139.155.56	AS4134 CHINANET-BACKBONE	`6.43ms` from Wuhan, CN

Traceroute

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

traceroute -a -n -q1 -f10 210.121.134.251

traceroute to 210.121.134.251 (210.121.134.251): 64 hops max, 52 byte packets

10 [AS3786] 1.213.106.234 3.617 ms

11 [AS3786] 1.213.140.22 2.363 ms

12 [AS3786] 118.128.27.234 2.394 ms

13 [AS55627] 210.121.137.5 1.959 ms

14 [AS55627] 210.121.137.3 2.336 ms

15 *

16 [AS55627] 210.121.134.251 2.365 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.

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