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	`3.74ms` 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
20.120.127.56	AS8075 Microsoft Corporation	`0.36ms` from Ashburn, US
71.72.118.72	AS10796 Charter Communications Inc	`16.50ms` from Columbus, US
23.253.252.120	AS33070 Rackspace Hosting	`0.99ms` from Dallas, US
99.35.207.72	AS7018 AT&T Enterprises, LLC	`12.04ms` from Dallas, US
14.247.167.40	AS45899 VNPT Corp	`2.21ms` from Hanoi, VN
212.174.149.8	AS9121 Turk Telekomunikasyon Anonim Sirketi	`1.33ms` from Istanbul, TR
180.244.45.24	AS7713 PT Telekomunikasi Indonesia	`2.03ms` from Jakarta, ID
85.174.56.248	AS12389 PJSC Rostelecom	`18.67ms` from Moscow, RU
161.35.61.56	AS14061 DigitalOcean, LLC	`0.26ms` from New York City, US
126.119.168.200	AS17676 SoftBank Corp.	`2.17ms` from Osaka, JP
18.230.31.104	AS16509 Amazon.com, Inc.	`0.16ms` from Osasco, BR
104.29.157.8	AS13335 Cloudflare, Inc.	`0.32ms` from Paris, FR
188.175.22.168	AS16246 O2 Czech Republic, a.s.	`8.78ms` from Prague, CZ
49.172.177.120	AS17858 LG POWERCOMM	`1.65ms` from Seoul, KR
183.115.93.232	AS4766 Korea Telecom	`2.85ms` from Seoul, KR
222.234.132.40	AS9318 SK Broadband Co Ltd	`2.44ms` from Seoul, KR
88.85.100.40	AS34772 NEOTEL AD Skopje	`0.58ms` from Skopje, MK
188.74.136.120	AS136787 PacketHub S.A.	`0.34ms` from Vienna, AT
45.27.66.120	AS7018 AT&T Enterprises, LLC	`3.93ms` from Chicago, US
73.158.116.56	AS7922 Comcast Cable Communications, LLC	`6.35ms` from Fremont, US
76.102.109.216	AS7922 Comcast Cable Communications, LLC	`5.97ms` from Fremont, US
37.229.181.136	AS15895 "Kyivstar" PJSC	`8.69ms` from Kyiv, UA
213.177.95.8	AS206610 Mixvoip S.A.	`0.61ms` from Luxembourg, LU
147.171.132.8	AS1942 Renater	`6.73ms` from Marseille, FR
211.91.58.8	AS4837 CHINA UNICOM China169 Backbone	`3.94ms` from Ningbo, CN

Traceroute

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

traceroute -a -n -q1 210.100.204.17

traceroute to 210.100.204.17 (210.100.204.17): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.143 1.219 ms

2 [AS3786] 182.162.216.41 1.242 ms

3 *

4 *

5 [AS3786] 182.162.36.14 2.449 ms

6 *

7 [AS3786] 182.162.36.5 1.822 ms

8 [AS3786] 1.208.173.89 2.149 ms

9 *

10 *

11 *

12 *

13 [AS9528] 210.100.204.17 5.771 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 28th 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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