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	110
IPv4 addresses	25,600
IPv6 addresses	0
ASN type	Business
Registry	apnic
Updated	4 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
210.178.33.0/24	Korea Telecom	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 110 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
211.236.124.44	██████████	10
211.46.95.27	██████████	10
211.236.124.197	██████████	7
211.236.124.196	██████████	7
211.46.94.13	██████████	6
211.236.124.96	██████████	6
211.46.95.85	██████████	6
211.236.124.97	█████████	4
211.236.124.111	██████████	4

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Peers

There are 9 peers for this ASN.

Peers	Name
AS10043	Ministry of Science and ICT
AS10161	QIA
AS10165	KOREA CUSTOMS SERVICE
AS17574	Seoul Metropolitan Government Computer Center
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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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS17841	NATIONAL INFORMATION RESOURCES SERVICE

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Downstreams

There are 6 downstreams for this ASN.

Downstreams	Name
AS10043	Ministry of Science and ICT
AS10161	QIA
AS10165	KOREA CUSTOMS SERVICE
AS17574	Seoul Metropolitan Government Computer Center
AS23585	Ministry of Justice
AS38102	SCOURTFAMILY

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
221.145.178.1	AS45400 Korea Telecom	`5.22ms` from Incheon, KR
211.253.67.254	AS45400 Korea Telecom	`7.22ms` from Incheon, KR
211.184.16.1	AS45400 Korea Telecom	`2.22ms` from Incheon, KR
211.34.174.1	AS45400 Korea Telecom	`6.94ms` from Incheon, KR
210.211.15.129	AS45400 Korea Telecom	`8.49ms` from Seoul, KR
211.46.125.242	AS45400 Korea Telecom	`5.31ms` from Seoul, KR
211.253.65.254	AS45400 Korea Telecom	`7.58ms` from Seoul, KR
211.46.94.15	AS45400 Korea Telecom	`2.99ms` from Seoul, KR
211.34.147.236	AS45400 Korea Telecom	`6.95ms` from Seoul, KR
210.179.218.54	AS45400 Korea Telecom	`3.86ms` from Seoul, KR
210.211.1.112	AS45400 Korea Telecom	`4.18ms` from Seoul, KR
210.103.55.33	AS45400 Korea Telecom	`3.15ms` from Seoul, KR
210.103.115.139	AS45400 Korea Telecom	`7.65ms` from Seoul, KR
210.204.227.253	AS45400 Korea Telecom	`5.79ms` from Seoul, KR
210.104.138.126	AS45400 Korea Telecom	`2.59ms` from Seoul, KR
211.236.124.50	AS45400 Korea Telecom	`5.45ms` from Seoul, KR
211.236.120.189	AS45400 Korea Telecom	`1.85ms` from Seoul, KR
210.178.187.1	AS45400 Korea Telecom	`9.46ms` from Seoul, KR
210.204.213.126	AS45400 Korea Telecom	`2.05ms` from Incheon, KR
211.253.250.21	AS45400 Korea Telecom	`7.24ms` from Seoul, KR
211.255.123.117	AS45400 Korea Telecom	`2.06ms` from Incheon, KR
210.104.218.254	AS45400 Korea Telecom	`3.24ms` from Seoul, KR
210.117.199.129	AS45400 Korea Telecom	`8.98ms` from Seoul, KR
211.57.43.253	AS45400 Korea Telecom	`7.12ms` from Seoul, KR
211.114.15.254	AS45400 Korea Telecom	`6.87ms` 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
195.121.111.8	AS8737 KPN B.V.	`0.45ms` from Amsterdam, NL
129.190.49.152	AS89 Navy Network Information Center (NNIC)	`2.69ms` from Ashburn, US
35.190.199.56	AS396982 Google LLC	`0.15ms` from Brussels, BE
179.41.26.104	AS22927 Telefonica de Argentina	`2.33ms` from Buenos Aires, AR
51.6.16.72	AS6871 Plusnet	`6.29ms` from Erith, GB
97.202.67.24	AS6167 Verizon Business	`16.54ms` from Los Angeles, US
185.61.88.216	AS31472 VoiceHost Ltd	`2.02ms` from Manchester, GB
180.116.251.88	AS4134 CHINANET-BACKBONE	`6.06ms` from Nanjing, CN
90.29.216.120	AS3215 Orange S.A.	`5.39ms` from Paris, FR
156.67.73.104	AS47583 Hostinger International Limited	`0.61ms` from Phoenix, US
73.79.44.24	AS7922 Comcast Cable Communications, LLC	`11.77ms` from Reston, US
189.130.46.120	AS8151 UNINET	`4.16ms` from Santiago de Queretaro, MX
174.127.182.152	AS11404 Wave Broadband	`0.38ms` from Seattle, US
14.64.39.88	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
210.35.24.136	AS4538 China Education and Research Network Center	`14.33ms` from Wuhan, CN
96.241.111.72	AS701 Verizon Business	`1.93ms` from Ashburn, US
89.18.13.200	AS39737 Prime Telecom srl	`0.37ms` from Bucharest, RO
97.134.53.56	AS6167 Verizon Business	`7.26ms` from Los Angeles, US
185.199.112.104	AS198721 Progetto8 Srl	`2.24ms` from Milan, IT
46.73.114.152	AS12714 PJSC MegaFon	`4.62ms` from Moscow, RU
109.173.82.136	AS42610 PJSC Rostelecom	`1.32ms` from Moscow, RU
93.224.172.216	AS3320 Deutsche Telekom AG	`4.16ms` from Nuernberg, DE
191.254.199.56	AS27699 TELEFÔNICA BRASIL S.A	`1.77ms` from São Paulo, BR
203.72.124.216	AS1659 Taiwan Academic Network (TANet) Information Center	`2.72ms` from Taichung, TW
163.30.207.120	AS1659 Taiwan Academic Network (TANet) Information Center	`3.03ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -m5 210.99.10.194

traceroute to 210.99.10.194 (210.99.10.194): 5 hops max, 52 byte packets

1 [AS16276] 141.227.165.3 0.395 ms

2 [AS16276] 57.128.121.142 0.74 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Vienna, AT

On January 19th 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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