Autonomous System details

AS45400

Korea Telecom · kt.com

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AS45400 – Korea Telecom

Field	Value
Country	South Korea
Website	kt.com
Hosted domains	108
IPv4 addresses	25,344
IPv6 addresses	0
ASN type	ISP
Registry	apnic
Updated	5 years ago on Sep 07, 2021

Netblock	Company	Num of IPs
211.46.92.0/23	Korea Telecom	512
180.92.241.0/24	Korea Telecom	256
180.92.248.0/24	Korea Telecom	256
180.92.250.0/24	Korea Telecom	256
180.92.251.0/24	Korea Telecom	256
180.92.254.0/24	Korea Telecom	256
203.242.5.0/24	Korea Telecom	256
203.254.123.0/24	Korea Telecom	256
210.90.6.0/24	Korea Telecom	256
210.90.80.0/24	Korea Telecom	256
210.90.82.0/24	Korea Telecom	256
210.90.191.0/24	Korea Telecom	256
210.90.199.0/24	Korea Telecom	256
210.90.214.0/24	Korea Telecom	256
210.95.12.0/24	Korea Telecom	256
210.95.19.0/24	Korea Telecom	256
210.96.31.0/24	Korea Telecom	256
210.96.84.0/24	Korea Telecom	256
210.96.115.0/24	Korea Telecom	256
210.96.121.0/24	Korea Telecom	256
210.97.6.0/24	Korea Telecom	256
210.97.119.0/24	Korea Telecom	256
210.99.10.0/24	Korea Telecom	256
210.99.158.0/24	Korea Telecom	256
210.99.159.0/24	Korea Telecom	256
210.99.168.0/24	Korea Telecom	256
210.100.136.0/24	Korea Telecom	256
210.100.168.0/24	Korea Telecom	256
210.100.214.0/24	Korea Telecom	256
210.103.55.0/24	Korea Telecom	256
210.103.111.0/24	Korea Telecom	256
210.103.115.0/24	Korea Telecom	256
210.104.8.0/24	Korea Telecom	256
210.104.9.0/24	Korea Telecom	256
210.104.10.0/24	Korea Telecom	256
210.104.11.0/24	Korea Telecom	256
210.104.12.0/24	Korea Telecom	256
210.104.13.0/24	Korea Telecom	256
210.104.14.0/24	Korea Telecom	256
210.104.15.0/24	Korea Telecom	256
210.104.20.0/24	Korea Telecom	256
210.104.22.0/24	Korea Telecom	256
210.104.26.0/24	Korea Telecom	256
210.104.27.0/24	Korea Telecom	256
210.104.28.0/24	Korea Telecom	256
210.104.44.0/24	Korea Telecom	256
210.104.102.0/24	Korea Telecom	256
210.104.123.0/24	Korea Telecom	256
210.104.138.0/24	Korea Telecom	256
210.104.218.0/24	Korea Telecom	256
210.104.237.0/24	Korea Telecom	256
210.117.195.0/24	KISTI	256
210.117.199.0/24	KISTI	256
210.178.187.0/24	Korea Telecom	256
210.179.87.0/24	Korea Telecom	256
210.179.88.0/24	Korea Telecom	256
210.179.140.0/24	Korea Telecom	256
210.179.141.0/24	Korea Telecom	256
210.179.159.0/24	Korea Telecom	256
210.179.218.0/24	Korea Telecom	256
210.179.219.0/24	Korea Telecom	256
210.204.213.0/24	Korea Telecom	256
210.204.226.0/24	Korea Telecom	256
210.204.227.0/24	Korea Telecom	256
210.211.1.0/24	Korea Telecom	256
210.211.15.0/24	Korea Telecom	256
211.34.114.0/24	Korea Telecom	256
211.34.115.0/24	Korea Telecom	256
211.34.147.0/24	Korea Telecom	256
211.34.174.0/24	Korea Telecom	256
211.43.142.0/24	Korea Telecom	256
211.46.94.0/24	Korea Telecom	256
211.46.95.0/24	Korea Telecom	256
211.46.125.0/24	Korea Telecom	256
211.57.43.0/24	Korea Telecom	256
211.114.15.0/24	Korea Telecom	256
211.114.27.0/24	Korea Telecom	256
211.114.36.0/24	Korea Telecom	256
211.114.101.0/24	Korea Telecom	256
211.114.171.0/24	Korea Telecom	256
211.184.16.0/24	Korea Telecom	256
211.185.244.0/24	Korea Telecom	256
211.185.245.0/24	Korea Telecom	256
211.236.67.0/24	Korea Telecom	256
211.236.106.0/24	Korea Telecom	256
211.236.118.0/24	Korea Telecom	256
211.236.120.0/24	Korea Telecom	256
211.236.123.0/24	Korea Telecom	256
211.236.124.0/24	Korea Telecom	256
211.252.223.0/24	Korea Telecom	256
211.252.239.0/24	Korea Telecom	256
211.253.65.0/24	Korea Telecom	256
211.253.67.0/24	Korea Telecom	256
211.253.149.0/24	Korea Telecom	256
211.253.150.0/24	Korea Telecom	256
211.253.250.0/24	Korea Telecom	256
211.255.123.0/24	Korea Telecom	256
221.145.178.0/24	Korea Telecom	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS45400
                                                OrgID:          AS45400
                                                ASName:         AS45400
                                                ASNumber:       AS45400
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 108 domain names hosted across 44 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
211.46.92.199	██████████	20
211.46.95.27	██████████	10
211.236.124.44	██████████	10
211.236.124.196	██████████	7
211.236.124.197	█████████	7
211.46.94.13	██████████	6
211.46.95.85	██████████	6
211.236.124.111	██████████	4
211.236.124.96	██████████	4
211.236.124.97	█████████	3

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Peers

There are 12 peers for this ASN.

Peers	Name
AS10043	Ministry of Science and ICT
AS10044	Rural Development Administration (RDA)
AS10051	Korea Post Information Center
AS10161	QIA
AS10165	KOREA CUSTOMS SERVICE
AS17574	Seoul Metropolitan Government Computer Center
AS17585	Public Procurement Service The Republic of Korea
AS17841	NATIONAL INFORMATION RESOURCES SERVICE
AS23585	Ministry of Justice
AS23592	Ministry of Food and Drug Safety
AS38102	SCOURTFAMILY
AS38682	National Institute of Environmental Research

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS17841	NATIONAL INFORMATION RESOURCES SERVICE

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ASN API & Database

Downstreams

There are 9 downstreams for this ASN.

Downstreams	Name
AS10043	Ministry of Science and ICT
AS10044	Rural Development Administration (RDA)
AS10051	Korea Post Information Center
AS10161	QIA
AS10165	KOREA CUSTOMS SERVICE
AS17574	Seoul Metropolitan Government Computer Center
AS17585	Public Procurement Service The Republic of Korea
AS23585	Ministry of Justice
AS38102	SCOURTFAMILY

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
210.211.15.129	AS45400 Korea Telecom	`10.32ms` from Incheon, KR
211.184.16.1	AS45400 Korea Telecom	`2.26ms` from Seoul, KR
210.104.8.254	AS45400 Korea Telecom	`6.09ms` from Seoul, KR
211.114.27.62	AS45400 Korea Telecom	`3.00ms` from Seoul, KR
210.204.213.158	AS45400 Korea Telecom	`1.77ms` from Seoul, KR
210.103.55.33	AS45400 Korea Telecom	`3.14ms` from Seoul, KR
210.104.138.126	AS45400 Korea Telecom	`2.34ms` from Seoul, KR
210.100.168.97	AS45400 Korea Telecom	`2.14ms` from Seoul, KR
211.34.174.1	AS45400 Korea Telecom	`7.39ms` from Incheon, KR
210.204.227.253	AS45400 Korea Telecom	`5.77ms` from Seoul, KR
211.46.125.242	AS45400 Korea Telecom	`5.37ms` from Seoul, KR
180.92.254.253	AS45400 Korea Telecom	`4.92ms` from Seoul, KR
210.90.214.242	AS45400 Korea Telecom	`7.04ms` from Seoul, KR
211.114.36.18	AS45400 Korea Telecom	`1.96ms` from Incheon, KR
203.254.123.1	AS45400 Korea Telecom	`7.10ms` from Seoul, KR
180.92.248.4	AS45400 Korea Telecom	`5.71ms` from Seoul, KR
210.103.111.83	AS45400 Korea Telecom	`5.69ms` from Seoul, KR
210.179.88.254	AS45400 Korea Telecom	`4.94ms` from Incheon, KR
211.57.43.254	AS45400 Korea Telecom	`6.84ms` from Seoul, KR
210.96.115.75	AS45400 Korea Telecom	`4.38ms` from Seoul, KR
211.236.124.196	AS45400 Korea Telecom	`5.01ms` from Seoul, KR
210.211.1.18	AS45400 Korea Telecom	`3.91ms` from Incheon, KR
211.252.223.187	AS45400 Korea Telecom	`5.61ms` from Seoul, KR
203.242.5.10	AS45400 Korea Telecom	`2.41ms` from Seoul, KR
211.34.147.200	AS45400 Korea Telecom	`6.00ms` 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
77.169.211.168	AS1136 KPN B.V.	`2.25ms` from Amsterdam, NL
54.204.64.8	AS14618 Amazon.com, Inc.	`0.49ms` from Ashburn, US
146.186.47.136	AS3999 The Pennsylvania State University	`9.47ms` from Ashburn, US
156.192.143.184	AS8452 TE-AS	`8.72ms` from Cairo, EG
73.9.151.152	AS7922 Comcast Cable Communications, LLC	`4.28ms` from Chicago, US
189.14.15.232	AS22689 SERCOMTEL S/A TELECOMUNICACOES	`6.64ms` from Curitiba, BR
80.140.168.72	AS3320 Deutsche Telekom AG	`6.94ms` from Frankfurt am Main, DE
108.137.147.8	AS16509 Amazon.com, Inc.	`0.11ms` from Jakarta, ID
34.36.81.24	AS396982 Google LLC	`0.07ms` from Melbourne, AU
95.165.103.72	AS25513 PJSC Moscow city telephone network	`2.29ms` from Moscow, RU
176.139.22.248	AS5410 Bouygues Telecom SA	`10.47ms` from Paris, FR
205.123.59.88	AS210 Utah Education Network	`6.14ms` from Salt Lake City, US
14.51.242.88	AS4766 Korea Telecom	`1.97ms` from Seoul, KR
121.3.139.72	AS2527 Sony Network Communications Inc.	`2.45ms` from Tokyo, JP
34.193.84.104	AS14618 Amazon.com, Inc.	`0.51ms` from Ashburn, US
75.182.143.40	AS11426 Charter Communications Inc	`16.13ms` from Charlotte, US
104.8.80.168	AS7018 AT&T Enterprises, LLC	`2.91ms` from Houston, US
209.74.224.248	AS16604 HUNTEL.NET	`2.78ms` from Lincoln, US
206.246.66.152	AS54103 MOD Mission Critical, LLC	`0.16ms` from Miami, US
121.112.47.200	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.53ms` from Osaka, JP
106.105.75.24	AS18049 Taiwan Infrastructure Network Technologie	`3.36ms` from Taipei, TW
204.208.46.72	AS5972 United States Department of Defense (DoD)	`2.94ms` from Tokyo, JP
78.88.99.40	AS29314 VECTRA S.A.	`6.97ms` from Warsaw, PL
114.242.51.8	AS4808 China Unicom Beijing Province Network	`4.46ms` from Beijing, CN
89.18.13.200	AS39737 Prime Telecom srl	`0.35ms` from Bucharest, RO

Traceroute

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

traceroute -a -n -q1 -f4 211.253.67.163

traceroute to 211.253.67.163 (211.253.67.163): 64 hops max, 52 byte packets

4 [AS24724] 212.91.9.82 5 ms

5 *

6 *

7 [AS3786] 61.42.202.93 215.323 ms

8 *

9 [AS3786] 211.40.2.250 246.177 ms

10 *

11 *

12 *

13 [] 211.255.110.2 246.78 ms

14 [] 211.255.110.10 244.354 ms

15 [] 211.255.120.22 252.821 ms

16 *

17 [AS45400] 211.253.65.253 251.142 ms

18 [AS45400] 211.253.67.163 251.77 ms

Measurement taken from

IPinfo ProbeNet in Gdansk, PL

On March 13th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS45400 at robtex.

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