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

Read more

Pingable IPs

5 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	`3.14ms` 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
52.88.106.136	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
72.32.167.216	AS33070 Rackspace Hosting	`0.98ms` from Dallas, US
31.117.32.72	AS2856 British Telecommunications PLC	`5.26ms` from London, GB
45.49.209.184	AS20001 Charter Communications Inc	`6.07ms` from Los Angeles, US
81.40.209.232	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.21ms` from Madrid, ES
62.42.155.88	AS6739 VODAFONE ONO, S.A.	`13.93ms` from Madrid, ES
88.191.184.184	AS12322 Free SAS	`5.44ms` from Paris, FR
2.88.109.168	AS25019 Saudi Telecom Company JSC	`1.58ms` from Riyadh, SA
136.47.31.168	AS16591 Google Fiber Inc.	`11.36ms` from Salt Lake City, US
62.11.83.136	AS8070 Microsoft Corporation	`1.46ms` from San Antonio, US
152.243.224.248	AS26599 TELEFÔNICA BRASIL S.A	`2.22ms` from São Paulo, BR
105.209.136.152	AS16637 MTN SA	`3.55ms` from Cape Town, ZA
200.129.48.40	AS1916 Rede Nacional de Ensino e Pesquisa	`0.91ms` from Fortaleza, BR
91.48.223.200	AS3320 Deutsche Telekom AG	`2.87ms` from Frankfurt am Main, DE
217.238.63.104	AS3320 Deutsche Telekom AG	`7.63ms` from Frankfurt am Main, DE
103.175.68.216	AS140822 ANPHATIDC	`0.61ms` from Ho Chi Minh City, VN
82.13.23.104	AS5089 Virgin Media Limited	`4.10ms` from London, GB
90.38.155.184	AS3215 Orange S.A.	`3.50ms` from Lyon, FR
88.12.227.120	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.03ms` from Madrid, ES
95.242.134.136	AS3269 Telecom Italia S.p.A.	`19.16ms` from Milan, IT
46.158.11.232	AS12389 PJSC Rostelecom	`17.07ms` from Moscow, RU
87.228.37.200	AS49505 JSC Selectel	`0.47ms` from Saint Petersburg, RU
189.142.155.56	AS8151 UNINET	`4.83ms` from Santiago de Queretaro, MX
186.204.70.232	AS28573 Claro NXT Telecomunicacoes Ltda	`5.73ms` from Sao Paulo, BR
52.163.242.120	AS8075 Microsoft Corporation	`0.39ms` from Singapore, SG

Traceroute

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

traceroute -a -n -q1 -f4 210.103.55.42

traceroute to 210.103.55.42 (210.103.55.42): 64 hops max, 52 byte packets

4 [AS5603] 193.189.168.101 50.597 ms

5 [AS5603] 95.176.251.11 21.009 ms

6 *

7 *

8 *

9 *

10 [AS9318] 39.120.253.82 284.226 ms

11 *

12 *

13 *

14 *

15 [] 211.255.110.78 280.264 ms

16 *

17 *

18 *

19 [AS45400] 210.103.55.42 288.116 ms

Measurement taken from

IPinfo ProbeNet in Skopje, MK

On March 13th 2026

What are IP address ranges?

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