101.55.23.0/24

AS21859 · Zenlayer Inc

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Summary

Country	South Korea
Domain	itkdata.kr
ASN	AS21859
Registry	APNIC
ID	KDATA

WHOIS Details

inetnum:        101.55.23.0 - 101.55.23.255
netname:        KDATA
descr:          KOREA DATA
country:        KR
admin-c:        IM562-AP
tech-c:         IM562-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-lower:      MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2020-09-02T02:55:37Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Paldal-gu, Suwon-si Gyeongsu-daero 438
country:        KR
phone:          +82-31-234-0445
e-mail:         [email protected]
nic-hdl:        IM562-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-09T00:10:04Z
source:         APNIC

route:          101.55.23.0/24
origin:         AS21859
descr:          Korea Internet & Security Agency (KISA) Seocho-ro 398, Seocho-gu, Seoul, Korea
mnt-by:         MNT-KRNIC-AP
last-modified:  2023-11-22T00:18:52Z
source:         APNIC

inetnum:        101.55.23.0 - 101.55.23.255
netname:        KDATA-KR
descr:          KOREA DATA
country:        KR
admin-c:        LS1001-KR
tech-c:         LY1001-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        [email protected] 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 Paldal-gu, Suwon-si Gyeongsu-daero 438
address:        Hyundai Heel 325
country:        KR
phone:          +82-31-234-0445
e-mail:         [email protected]
nic-hdl:        LS1001-KR
mnt-by:         MNT-KRNIC-AP
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 Paldal-gu, Suwon-si Gyeongsu-daero 438
address:        Hyundai Heel 325
country:        KR
phone:          +82-31-234-0445
e-mail:         [email protected]
nic-hdl:        LY1001-KR
mnt-by:         MNT-KRNIC-AP
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

Nearby Ranges

BGP prefixes that overlap with 101.55.0.0/16

Range	ASN	Company	Num of IPs
101.55.192.0/19	AS2519	RAT Co.,Ltd.	8,192
101.55.240.0/20	AS9614	Oita Cable Telecom Co.,Ltd.	4,096
101.55.232.0/21	AS18260	EHIME CATV CO.,LTD.	2,048
101.55.49.0/24	AS138195	KOREA DATA	256
101.55.9.0/24	AS138195	KOREA DATA	256
101.55.67.0/24	AS141159	KOREA DATA	256
101.55.82.0/24	AS141159	KOREA DATA	256
101.55.21.0/24	AS149304	KOREA DATA	256
101.55.0.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.11.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.59.0/24	AS133448	KOREA DATA	256
101.55.17.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.19.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.20.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.22.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.38.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.5.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.58.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.6.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.66.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.8.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.83.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.16.0/24	AS9318	KOREA DATA	256
101.55.14.0/24	AS55592	Korea Data Telecommunication Co., Ltd.	256
101.55.10.0/24	AS138195	KOREA DATA	256
101.55.18.0/24	AS138195	KOREA DATA	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
101.55.23.54	AS21859 Zenlayer Inc	`21.55ms` 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
104.232.212.120	AS62874 Web2Objects LLC	`0.49ms` from Ashburn, US
20.81.25.72	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
73.95.142.168	AS7922 Comcast Cable Communications, LLC	`15.09ms` from Denver, US
20.216.35.152	AS8075 Microsoft Corporation	`1.21ms` from Dubai, AE
178.23.29.8	AS43566 tyntec GmbH	`3.18ms` from Duesseldorf, DE
178.74.254.72	AS49223 EVEREST TV AND RADIO COMPANY LLC	`2.98ms` from Kyiv, UA
38.38.213.104	AS398823 PEG TECH INC	`0.32ms` from Los Angeles, US
2.194.198.104	AS16232 Telecom Italia S.p.A.	`16.67ms` from Milan, IT
174.89.237.248	AS577 Bell Canada	`1.34ms` from Montreal, CA
76.76.0.56	AS205157 Daniel Cid	`0.11ms` from Paris, FR
201.182.200.40	AS267532 CONEXAO BR MAIS SERVICOS DE COMUNICACAO LTDA	`2.18ms` from Porto Alegre, BR
54.164.162.168	AS14618 Amazon.com, Inc.	`0.16ms` from Reston, US
3.224.224.152	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
187.235.190.216	AS8151 UNINET	`4.77ms` from Santiago de Queretaro, MX
191.209.93.120	AS26599 TELEFÔNICA BRASIL S.A	`2.95ms` from Sao Paulo, BR
112.151.254.56	AS17858 LG POWERCOMM	`2.99ms` from Seoul, KR
52.74.16.216	AS16509 Amazon.com, Inc.	`0.10ms` from Singapore, SG
153.196.78.136	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.94ms` from Tokyo, JP
99.232.236.56	AS812 Rogers Communications Canada Inc.	`3.70ms` from Toronto, CA
31.161.16.120	AS1136 KPN B.V.	`0.46ms` from Amsterdam, NL
24.126.228.120	AS7922 Comcast Cable Communications, LLC	`2.31ms` from Atlanta, US
3.137.191.232	AS16509 Amazon.com, Inc.	`0.69ms` from Columbus, US
91.20.163.104	AS3320 Deutsche Telekom AG	`2.87ms` from Frankfurt am Main, DE
88.68.108.104	AS3209 Vodafone GmbH	`4.73ms` from Hamburg, DE
174.137.20.72	AS31875 Jackson County Rural Electric Membership Corporation	`4.37ms` from Indianapolis, US

Traceroute

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

traceroute -a -n -q1 101.55.23.52

traceroute to 101.55.23.52 (101.55.23.52): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.021 ms

2 [AS9286] 121.78.63.69 1.14 ms

3 *

4 *

5 *

6 [AS21859] 101.55.23.52 22.128 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

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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