210.99.75.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	APNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.99.72.0 - 210.99.75.255
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:  2025-11-03T08:14:18Z
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:        210.99.72.0 - 210.99.75.255
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 210.99.0.0/16

Range	ASN	Company	Num of IPs
210.99.177.0/24	AS4766	Korea Telecom	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.99.75.203	2ksystem.co.kr	1
210.99.75.40	hidb.re.kr	1

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

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

IP Address	ASN	Details
210.99.75.61	AS4766 Korea Telecom	`5.02ms` 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
69.174.240.40	AS13768 Aptum Technologies	`0.49ms` from Ashburn, US
3.85.236.24	AS14618 Amazon.com, Inc.	`0.50ms` from Ashburn, US
184.19.116.24	AS5650 Frontier Communications of America, Inc.	`7.39ms` from Ashburn, US
96.37.215.40	AS20115 Charter Communications LLC	`9.38ms` from Atlanta, US
84.192.14.8	AS6848 Telenet BV	`5.92ms` from Brussels, BE
20.9.33.56	AS8075 Microsoft Corporation	`0.17ms` from Des Moines, US
102.117.151.248	AS23889 Mauritius Telecom Ltd	`1.64ms` from Ebene, MU
103.244.150.216	AS135357 HONG KONG KOWLOON TELECOMMUNICATIONS CO.,LIMITED	`0.79ms` from Hong Kong, HK
68.92.49.104	AS7018 AT&T Enterprises, LLC	`1.46ms` from Houston, US
81.214.13.120	AS9121 Turk Telekomunikasyon Anonim Sirketi	`18.45ms` from Istanbul, TR
142.197.67.232	AS33363 Charter Communications, Inc	`5.37ms` from Orlando, US
178.68.163.24	AS12389 PJSC Rostelecom	`4.62ms` from Saint Petersburg, RU
131.108.232.72	AS262234 ASOCIACION DE SERVICIO DE INTERNET S. DE RL.	`1.13ms` from San Pedro Sula, HN
101.183.81.8	AS1221 Telstra Limited	`2.94ms` from Sydney, AU
220.146.183.24	AS4685 Asahi Net	`2.00ms` from Tokyo, JP
65.95.147.56	AS577 Bell Canada	`8.51ms` from Toronto, CA
81.190.141.216	AS21021 Multimedia Polska Sp. z o.o.	`13.44ms` from Warsaw, PL
46.176.181.40	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.13ms` from Athens, GR
99.172.23.184	AS7018 AT&T Enterprises, LLC	`16.58ms` from Atlanta, US
175.34.123.136	AS4804 Microplex PTY LTD	`2.35ms` from Brisbane, AU
37.184.66.136	AS5432 Proximus NV	`14.72ms` from Brussels, BE
156.216.43.168	AS8452 TE-AS	`5.51ms` from Cairo, EG
174.111.10.8	AS11426 Charter Communications Inc	`8.99ms` from Charlotte, US
98.228.51.216	AS7922 Comcast Cable Communications, LLC	`8.95ms` from Chicago, US
35.156.25.72	AS16509 Amazon.com, Inc.	`0.14ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -f5 210.99.75.53

traceroute to 210.99.75.53 (210.99.75.53): 64 hops max, 52 byte packets

5 [AS4766] 112.174.17.30 7.081 ms

6 [AS4766] 112.190.198.74 6.404 ms

7 *

8 [AS4766] 210.99.75.53 7.188 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On March 21st 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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