210.103.83.0/24

AS17841 · NATIONAL INFORMATION RESOURCES SERVICE

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17841
Registry	APNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.103.80.0 - 210.103.87.255
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:  2025-11-03T08:14:24Z
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:        210.103.80.0 - 210.103.87.255
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 210.103.0.0/16

Range	ASN	Company	Num of IPs
210.103.128.0/17	AS23593	SEJONG NETWORKS	32,768
210.103.128.0/17	AS9848	SEJONG NETWORKS	32,768
210.103.187.0/24	AS131866	Its-in	256
210.103.152.0/24	AS38676	FLEXNET	256
210.103.137.0/24	AS131866	Its-in	256
210.103.154.0/24	AS38676	FLEXNET	256
210.103.155.0/24	AS38676	FLEXNET	256
210.103.176.0/24	AS38676	FLEXNET	256
210.103.153.0/24	AS38676	FLEXNET	256
210.103.138.0/24	AS131866	Its-in	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

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

IP Address	ASN	Details
210.103.83.113	AS17841 NATIONAL INFORMATION RESOURCES SERVICE	`9.16ms` 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
34.208.78.40	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
87.64.18.136	AS5432 Proximus NV	`1.95ms` from Brussels, BE
109.131.19.216	AS5432 Proximus NV	`2.90ms` from Brussels, BE
142.147.188.248	AS62874 Web2Objects LLC	`0.28ms` from Dallas, US
52.165.149.24	AS8075 Microsoft Corporation	`0.33ms` from Des Moines, US
187.64.51.88	AS28573 Claro NXT Telecomunicacoes Ltda	`14.66ms` from Fortaleza, BR
193.26.118.8	AS8426 ClaraNET LTD	`0.30ms` from Frankfurt am Main, DE
213.192.66.24	AS12831 Technical University of Gdansk, Academic Computer Center TASK	`0.42ms` from Gdansk, PL
157.148.135.40	AS134543 China Unicom Guangdong IP network	`2.79ms` from Guangzhou, CN
14.229.31.136	AS45899 VNPT Corp	`1.88ms` from Hanoi, VN
108.212.93.72	AS7018 AT&T Enterprises, LLC	`3.78ms` from Kansas City, US
94.4.181.56	AS5607 Sky UK Limited	`8.65ms` from London, GB
91.230.66.8	AS3215 Orange S.A.	`1.44ms` from Lyon, FR
77.226.234.168	AS12430 VODAFONE ESPANA S.A.U.	`0.87ms` from Madrid, ES
168.91.120.56	AS9009 M247 Europe SRL	`0.05ms` from Madrid, ES
121.82.77.40	AS17511 OPTAGE Inc.	`3.01ms` from Osaka, JP
179.116.50.200	AS26599 TELEFÔNICA BRASIL S.A	`1.79ms` from Osasco, BR
71.209.146.104	AS209 CenturyLink Communications, LLC	`1.73ms` from Phoenix, US
20.116.79.120	AS8075 Microsoft Corporation	`0.16ms` from Toronto, CA
31.178.147.104	AS9141 P4 Sp. z o.o.	`15.52ms` from Warsaw, PL
154.251.62.168	AS36947 Telecom Algeria	`12.02ms` from Algiers, DZ
40.87.25.168	AS8075 Microsoft Corporation	`0.47ms` from Ashburn, US
73.122.174.136	AS7922 Comcast Cable Communications, LLC	`4.95ms` from Atlanta, US
71.169.191.24	AS13977 Fidium	`3.26ms` from Boston, US
80.201.143.216	AS5432 Proximus NV	`3.09ms` from Brussels, BE

Traceroute

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

traceroute -a -n -q1 -f2 210.103.83.241

traceroute to 210.103.83.241 (210.103.83.241): 64 hops max, 52 byte packets

2 [AS9286] 121.78.63.73 4.688 ms

3 *

4 [] 139.150.100.124 11.774 ms

5 *

6 *

7 *

8 *

9 [AS17841] 210.103.83.114 11.143 ms

10 [AS17841] 210.103.83.241 10.638 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 30th 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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