210.103.55.0/24

AS45400  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS45400
Registry APNIC
ID KORNET-KR

WHOIS Details

inetnum:        210.103.52.0 - 210.103.55.255
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:        210.103.52.0 - 210.103.55.255
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

Pingable IPs

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

IP Address ASN Details
210.103.55.33 AS45400 Korea Telecom 3.48ms 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
54.202.6.200 AS16509 Amazon.com, Inc. 0.10ms from Boardman, US
44.245.100.248 AS16509 Amazon.com, Inc. 0.52ms from Boardman, US
190.210.62.200 AS16814 NSS S.A. 0.55ms from Buenos Aires, AR
172.183.177.120 AS8075 Microsoft Corporation 0.47ms from Chicago, US
79.238.125.40 AS3320 Deutsche Telekom AG 7.26ms from Frankfurt am Main, DE
77.187.34.104 AS6805 Telefonica Germany GmbH & Co.OHG 4.44ms from Frankfurt am Main, DE
36.66.173.232 AS7713 PT Telekomunikasi Indonesia 6.42ms from Jakarta, ID
64.33.137.88 AS11796 Airstream Communications, LLC 3.37ms from Minneapolis, US
5.164.22.56 AS52207 JSC "ER-Telecom Holding" 3.50ms from Moscow, RU
3.6.96.232 AS16509 Amazon.com, Inc. 0.17ms from Mumbai, IN
87.229.211.120 AS3216 PJSC "Vimpelcom" 0.32ms from Samara, RU
125.191.1.40 AS17858 LG POWERCOMM 2.00ms from Seoul, KR
18.254.209.136 AS8987 Amazon Data Services Ireland Ltd 0.83ms from Columbus, US
146.86.156.104 AS398203 MidSouth Fiber 6.29ms from Dallas, US
9.234.114.120 AS8075 Microsoft Corporation 0.18ms from Des Moines, US
14.190.182.216 AS45899 VNPT Corp 2.75ms from Hanoi, VN
31.216.196.24 AS5391 Hrvatski Telekom d.d. 12.68ms from Ljubljana, SI
79.158.136.104 AS3352 TELEFONICA DE ESPANA S.A.U. 8.69ms from Madrid, ES
76.18.6.72 AS7922 Comcast Cable Communications, LLC 2.67ms from Miami, US
71.95.83.168 AS20115 Charter Communications LLC 10.19ms from Minneapolis, US
149.119.139.120 AS174 Cogent Communications, LLC 0.81ms from New York City, US
84.247.63.8 AS31169 Sognenett AS 6.20ms from Sandefjord, NO
69.91.148.104 AS33659 Comcast Cable Communications, LLC 1.82ms from Secaucus, US
211.228.97.56 AS4766 Korea Telecom 9.91ms from Seoul, KR
176.205.253.8 AS5384 Emirates Internet 11.06ms from Al Fujairah City, AE

Traceroute

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

$
traceroute -a -n -q1 -f2 210.103.55.1
traceroute to 210.103.55.1 (210.103.55.1): 64 hops max, 52 byte packets
2 [AS749] 11.73.7.213 0.258 ms
3 *
4 *
6 *
7 *
8 [AS3786] 182.162.36.14 2.523 ms
9 *
10 [AS3786] 182.162.36.5 2.714 ms
11 [AS3786] 1.213.147.81 1.957 ms
12 [AS3786] 210.107.53.198 2.846 ms
13 *
14 *
15 *
16 [] 211.255.110.2 2.431 ms
17 [] 211.255.110.14 3.262 ms
18 [] 211.255.120.70 3.205 ms
19 *
20 [AS45400] 210.103.55.1 3.963 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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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