210.204.64.0/20

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        210.204.64.0 - 210.204.67.255
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

Nearby Ranges

BGP prefixes that overlap with 210.204.0.0/16

No nearby ranges found.

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

1,471 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
210.204.71.132	AS4766 Korea Telecom	`1.11ms` from Seoul, KR
210.204.69.106	AS4766 Korea Telecom	`1.09ms` from Seoul, KR
210.204.64.141	AS4766 Korea Telecom	`1.08ms` from Seoul, KR
210.204.67.198	AS4766 Korea Telecom	`0.97ms` from Seoul, KR
210.204.66.198	AS4766 Korea Telecom	`1.09ms` from Seoul, KR
210.204.70.100	AS4766 Korea Telecom	`0.93ms` from Seoul, KR
210.204.68.81	AS4766 Korea Telecom	`1.06ms` from Seoul, KR
210.204.65.61	AS4766 Korea Telecom	`1.02ms` 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
92.70.155.36	AS1136 KPN B.V.	`2.83ms` from Amsterdam, NL
34.161.173.180	AS396982 Google LLC	`4.09ms` from Atlanta, US
86.249.125.68	AS3215 Orange S.A.	`10.67ms` from Aubervilliers, FR
50.236.14.228	AS7922 Comcast Cable Communications, LLC	`1.22ms` from Boston, US
103.108.117.20	AS136375 Chl Technology	`1.32ms` from Chennai, IN
71.67.186.244	AS10796 Charter Communications Inc	`14.39ms` from Columbus, US
105.28.32.228	AS37100 SEACOM Limited	`5.25ms` from Dar es Salaam, TZ
93.234.17.244	AS3320 Deutsche Telekom AG	`7.74ms` from Frankfurt am Main, DE
182.156.16.84	AS45820 Tata Teleservices ISP AS	`7.42ms` from Kolkata, IN
104.136.225.148	AS33363 Charter Communications, Inc	`8.87ms` from Orlando, US
180.45.12.36	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.52ms` from Osaka, JP
88.181.55.4	AS12322 Free SAS	`5.58ms` from Paris, FR
128.85.66.4	AS8075 Microsoft Corporation	`0.78ms` from Quincy, US
198.131.145.4	AS292 ESnet	`0.30ms` from San Jose, US
20.66.5.132	AS8075 Microsoft Corporation	`0.63ms` from San Jose, US
188.129.196.180	AS16010 Magticom Ltd.	`0.73ms` from Tbilisi, GE
97.84.180.52	AS20115 Charter Communications LLC	`9.85ms` from Chicago, US
187.60.115.116	AS28652 Telecomunicações Nordeste Ltda.	`14.60ms` from Fortaleza, BR
109.131.192.196	AS5432 Proximus NV	`4.93ms` from Gravelines, FR
78.183.59.68	AS9121 Turk Telekomunikasyon Anonim Sirketi	`17.89ms` from Istanbul, TR
4.213.51.20	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
131.175.66.116	AS137 Consortium GARR	`1.64ms` from Milan, IT
58.70.19.196	AS17511 OPTAGE Inc.	`1.54ms` from Osaka, JP
153.169.162.4	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.25ms` from Osaka, JP
157.136.255.20	AS2200 Renater	`1.56ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f3 -m8 210.204.79.209

traceroute to 210.204.79.209 (210.204.79.209): 8 hops max, 52 byte packets

3 [AS4766] 121.189.3.37 10.858 ms

4 [AS4766] 112.174.88.177 43.223 ms

5 [AS4766] 112.174.91.141 37.014 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Nagano, JP

On October 30th 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.

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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