210.123.71.0/24

AS17845 · Gyeonggi Technopark

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17845
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.123.0.0 - 210.123.127.255
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:        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 210.123.0.0/16

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

IP Address	ASN	Details
210.123.71.1	AS17845 Gyeonggi Technopark	`1.79ms` 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
66.243.206.248	AS32645 Fidium	`11.16ms` from Boston, US
156.222.116.104	AS8452 TE-AS	`4.30ms` from Cairo, EG
66.10.206.136	AS7018 AT&T Enterprises, LLC	`2.11ms` from Dallas, US
77.186.152.248	AS6805 Telefonica Germany GmbH & Co.OHG	`2.65ms` from Frankfurt am Main, DE
203.232.20.168	AS4766 Korea Telecom	`5.78ms` from Incheon, KR
213.43.75.232	AS16135 Turkcell A.S.	`14.85ms` from Izmir, TR
117.195.119.232	AS9829 National Internet Backbone	`7.15ms` from Kolkata, IN
176.100.3.104	AS12963 "SCIENTIFIC-INDUSTRIAL FIRM "VOLZ" LIMITED LIABILITY COMPANY	`0.46ms` from Kyiv, UA
27.116.29.56	AS17940 CYBER LINKS Co.,Ltd.	`1.58ms` from Osaka, JP
52.52.44.120	AS16509 Amazon.com, Inc.	`0.15ms` from San Jose, US
142.104.133.24	AS16462 University of Victoria	`3.20ms` from Seattle, US
121.129.28.40	AS4766 Korea Telecom	`1.10ms` from Seoul, KR
68.105.166.24	AS22773 Cox Communications Inc.	`11.00ms` from Atlanta, US
140.179.247.72	AS9808 China Mobile Communications Group Co., Ltd.	`3.55ms` from Beijing, CN
68.75.72.168	AS7018 AT&T Enterprises, LLC	`1.71ms` from Dallas, US
37.49.63.104	AS3209 Vodafone GmbH	`9.28ms` from Frankfurt am Main, DE
107.151.103.72	AS132839 POWER LINE DATACENTER	`1.08ms` from Hong Kong, HK
61.77.70.120	AS4766 Korea Telecom	`1.83ms` from Incheon, KR
13.42.70.248	AS16509 Amazon.com, Inc.	`0.20ms` from London, GB
81.187.135.200	AS20712 Andrews & Arnold Ltd	`1.85ms` from London, GB
88.22.186.72	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.22ms` from Madrid, ES
97.146.141.184	AS6167 Verizon Business	`17.74ms` from Manassas, US
108.75.195.40	AS7018 AT&T Enterprises, LLC	`3.10ms` from Miami, US
79.215.94.120	AS3320 Deutsche Telekom AG	`5.36ms` from Nuernberg, DE
70.127.180.216	AS33363 Charter Communications, Inc	`8.66ms` from Orlando, US

Traceroute

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

traceroute -a -n -q1 -f4 210.123.71.1

traceroute to 210.123.71.1 (210.123.71.1): 64 hops max, 52 byte packets

4 [AS4766] 112.174.99.254 1.827 ms

5 *

6 *

7 *

8 [AS17845] 210.123.71.1 2.802 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On March 28th 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.

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