210.100.204.0/24

AS9528 · Chungcheongbuk-do Education Research and Information Institute

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Summary

Country	South Korea
Domain	kt.com
ASN	AS9528
Registry	APNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.100.204.0 - 210.100.207.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:14:21Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr 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 Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        210.100.204.0 - 210.100.207.255
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
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

Nearby Ranges

BGP prefixes that overlap with 210.100.0.0/16

Range	ASN	Company	Num of IPs
210.100.0.0/17	AS4766	Korea Telecom	32,768
210.100.192.0/21	AS4766	Korea Telecom	2,048
210.100.212.0/23	AS10176	Daejeongyoyukjeongbowon	512
210.100.214.0/24	AS45400	Korea Telecom	256

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

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

IP Address	ASN	Details
210.100.204.27	AS9528 Chungcheongbuk-do Education Research and Information Institute	`3.73ms` 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
57.153.89.104	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
177.43.62.56	AS18881 TELEFÔNICA BRASIL S.A	`5.65ms` from Curitiba, BR
173.175.15.200	AS11427 Charter Communications Inc	`6.87ms` from Dallas, US
3.251.39.40	AS16509 Amazon.com, Inc.	`0.15ms` from Dublin, IE
123.233.209.248	AS4837 CHINA UNICOM China169 Backbone	`3.10ms` from Jinan, CN
112.114.7.120	AS4134 CHINANET-BACKBONE	`8.09ms` from Kunming, CN
15.217.6.120	AS16509 Amazon.com, Inc.	`5.58ms` from Madrid, ES
2.112.221.168	AS3269 Telecom Italia S.p.A.	`3.44ms` from Milan, IT
73.178.35.72	AS7922 Comcast Cable Communications, LLC	`8.89ms` from New York City, US
54.233.6.120	AS16509 Amazon.com, Inc.	`0.17ms` from Osasco, BR
13.37.166.72	AS16509 Amazon.com, Inc.	`0.12ms` from Paris, FR
69.5.100.24	AS18516 Molalla Communications Systems Inc.	`1.25ms` from Portland, US
186.237.183.152	AS263018 Zapelini & Cia. Ltda.	`7.90ms` from Porto Alegre, BR
166.147.154.136	AS6167 Verizon Business	`18.21ms` from Santa Clara, US
86.125.189.248	AS8708 DIGI ROMANIA S.A.	`1.40ms` from Timisoara, RO
1.73.77.152	AS9605 NTT DOCOMO, INC.	`6.77ms` from Tokyo, JP
27.30.1.40	AS4134 CHINANET-BACKBONE	`3.74ms` from Wuhan, CN
89.140.15.104	AS6739 Vodafone ONO AS	`3.83ms` from Barcelona, ES
83.192.36.152	AS3215 Orange S.A.	`4.04ms` from Frankfurt am Main, DE
113.187.236.152	AS45899 VNPT Corp	`6.40ms` from Ho Chi Minh City, VN
105.169.187.72	AS37119 UNITEL SA	`0.68ms` from Luanda, AO
82.54.236.136	AS3269 Telecom Italia S.p.A.	`9.30ms` from Milan, IT
31.198.122.152	AS3269 Telecom Italia S.p.A.	`7.64ms` from Milan, IT
117.71.249.136	AS4134 CHINANET-BACKBONE	`13.67ms` from Nanchang, CN
190.231.200.152	AS7303 Telecom Argentina S.A.	`15.35ms` from Rosario, AR

Traceroute

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

traceroute -a -n -q1 210.100.204.19

traceroute to 210.100.204.19 (210.100.204.19): 64 hops max, 52 byte packets

1 [AS15169] 72.14.236.39 236.009 ms

2 *

3 *

4 [AS3786] 61.42.202.57 271.133 ms

5 *

6 [AS3786] 1.213.104.2 248.195 ms

7 [AS3786] 211.53.88.166 264.433 ms

8 [AS3786] 1.215.61.34 269.084 ms

9 [AS9316] 211.42.66.34 270.235 ms

10 [AS9316] 61.108.9.69 256.793 ms

11 *

12 [AS9528] 210.100.204.19 261.271 ms

Measurement taken from

IPinfo ProbeNet in Paris, FR

On March 20th 2026

What are IP address ranges?

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