Autonomous System details

AS18305

POSCO DX · poscoict.com

South Korea

BitTorrent

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AS18305 – POSCO DX

Field	Value
Country	South Korea
Website	poscoict.com
Hosted domains	70
IPv4 addresses	74,752
IPv6 addresses	0
ASN type	Business
Registry	apnic
Updated	2 years ago on Sep 05, 2023

Netblock	Company	Num of IPs
203.245.128.0/17	POSCO Engineering Construction Co.,Ltd	32,768
203.241.0.0/19	POSCO DX	8,192
203.244.32.0/19	POSCO DAEWOO	8,192
203.244.64.0/19	POSCO DAEWOO	8,192
203.238.192.0/21	POSCO DX	2,048
203.238.200.0/22	POSCO DX	1,024
203.238.220.0/22	POSCO DX	1,024
1.209.29.0/24	LG Uplus	256
1.209.181.0/24	LG Uplus	256
1.209.182.0/24	LG Uplus	256
1.209.183.0/24	POSCO ICT	256
1.209.185.0/24	POSCO ICT	256
39.121.111.0/24	POSCOICT	256
116.123.216.0/24	POSCO ICT	256
116.124.169.0/24	POSCO ICT	256
116.127.24.0/24	POSCO ICT	256
118.129.142.0/24	POSCO DX	256
118.129.143.0/24	POSCO DX	256
119.202.117.0/24	(ju)poseukoaissiti	256
175.202.208.0/24	Korea Telecom	256
175.202.211.0/24	Korea Telecom	256
175.202.213.0/24	Korea Telecom	256
203.231.144.0/24	POSCO ICT	256
203.231.146.0/24	POSCO ICT	256
203.231.147.0/24	POSCO ICT	256
203.231.148.0/24	POSCO ICT	256
203.231.149.0/24	POSCO ICT	256
203.231.151.0/24	POSCO ICT	256
203.238.204.0/24	POSCO DX	256
203.238.205.0/24	POSCO DX	256
203.238.206.0/24	POSCO DX	256
203.238.207.0/24	POSCO DX	256
203.238.210.0/24	POSCO DX	256
203.238.219.0/24	POSCO DX	256
203.238.221.0/24	POSCO DX	256
203.246.184.0/24	POSCO DX	256
203.246.185.0/24	POSCO DX	256
203.246.186.0/24	POSCO DX	256
203.246.187.0/24	POSCO DX	256
203.246.188.0/24	POSCO DX	256
203.246.189.0/24	POSCO DX	256
210.105.154.0/24	Korea Telecom	256
210.108.50.0/24	LG DACOM Corporation	256
210.108.199.0/24	LG DACOM Corporation	256
210.109.175.0/24	POSCO ICT	256
210.113.156.0/24	(ju)poseukoaissiti	256
210.113.157.0/24	(ju)poseukoaissiti	256
211.32.161.0/24	POSCO ICT	256
211.32.162.0/24	POSCO ICT	256
211.32.165.0/24	POSCO ICT	256
211.60.10.0/24	POSCO ICT	256
211.169.135.0/24	POSCO ICT	256
211.171.31.0/24	LG Uplus	256
211.171.182.0/24	LG Uplus	256
211.171.185.0/24	POSCO ICT	256
211.171.186.0/24	POSCO ICT	256
211.171.187.0/24	POSCO ICT	256
211.229.145.0/24	(ju)poseukoaissiti	256
222.104.91.0/24	(ju)poseukoaissiti	256
222.104.92.0/24	(ju)poseukoaissiti	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS18305
                                                OrgID:          AS18305
                                                ASName:         AS18305
                                                ASNumber:       AS18305
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 70 domain names hosted across 37 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
1.209.183.128	██████████	10
1.209.29.67	██████████	6
211.32.165.52	██████████	4
1.209.185.136	██████████	4
203.231.146.3	█████████	4
203.238.219.7	██████████	3
211.171.185.202	██████████	3
203.245.200.32	██████████	2
116.123.216.21	██████████	2
116.123.216.77	██████████	2

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Peers

There are 4 peers for this ASN.

Peers	Name
AS3786	LG DACOM Corporation
AS4766	Korea Telecom
AS9318	SK Broadband Co Ltd
AS9848	SEJONG NETWORKS

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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams	Name
AS3786	LG DACOM Corporation
AS4766	Korea Telecom
AS9318	SK Broadband Co Ltd
AS9848	SEJONG NETWORKS

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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address	ASN	Details
203.244.84.70	AS18305 POSCO DX	`3.21ms` from Incheon, KR
203.241.6.18	AS18305 POSCO DX	`3.25ms` from Incheon, KR
203.245.252.94	AS18305 POSCO DX	`3.28ms` from Incheon, KR
203.238.204.255	AS18305 POSCO DX	`3.15ms` from Incheon, KR
203.244.40.8	AS18305 POSCO DX	`2.95ms` from Seoul, KR
203.245.193.102	AS18305 POSCO DX	`3.37ms` from Seoul, KR
203.231.146.180	AS18305 POSCO DX	`6.76ms` from Seoul, KR
203.244.69.244	AS18305 POSCO DX	`3.13ms` from Seoul, KR
203.245.152.150	AS18305 POSCO DX	`3.24ms` from Seoul, KR
203.245.192.43	AS18305 POSCO DX	`3.23ms` from Incheon, KR
222.104.91.217	AS18305 POSCO DX	`6.35ms` from Incheon, KR
203.245.217.242	AS18305 POSCO DX	`3.57ms` from Incheon, KR
203.241.0.56	AS18305 POSCO DX	`3.49ms` from Incheon, KR
203.245.237.167	AS18305 POSCO DX	`3.27ms` from Incheon, KR
203.245.207.111	AS18305 POSCO DX	`3.38ms` from Seoul, KR
203.244.72.239	AS18305 POSCO DX	`3.20ms` from Seoul, KR
203.241.2.178	AS18305 POSCO DX	`3.68ms` from Seoul, KR
203.238.207.1	AS18305 POSCO DX	`2.99ms` from Seoul, KR
203.244.68.192	AS18305 POSCO DX	`3.00ms` from Seoul, KR
203.245.243.120	AS18305 POSCO DX	`3.38ms` from Seoul, KR
203.245.221.73	AS18305 POSCO DX	`3.38ms` from Seoul, KR
203.241.28.197	AS18305 POSCO DX	`3.68ms` from Incheon, KR
203.244.47.246	AS18305 POSCO DX	`3.16ms` from Seoul, KR
203.245.130.102	AS18305 POSCO DX	`3.31ms` from Seoul, KR
203.244.33.95	AS18305 POSCO DX	`2.94ms` 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
128.172.9.161	AS16643 Virginia Commonwealth University	`4.43ms` from Ashburn, US
174.46.148.177	AS3549 Level 3 Parent, LLC	`2.21ms` from Ashburn, US
96.196.2.1	AS7922 Comcast Cable Communications, LLC	`0.44ms` from Ashburn, US
45.141.168.1	AS984 OCTOPUS WEB SOLUTION INC	`2.09ms` from Bangkok, TH
191.102.21.1	AS262259 StarNetworks	`0.78ms` from Buenos Aires, AR
58.46.20.1	AS4134 CHINANET-BACKBONE	`5.17ms` from Changsha, CN
183.223.208.1	AS9808 China Mobile Communications Group Co., Ltd.	`4.08ms` from Chengdu, CN
74.140.114.97	AS10796 Charter Communications Inc	`13.78ms` from Cleveland, US
165.29.145.1	AS21852 State Of Arkansas, Division of Information Systems	`13.01ms` from Dallas, US
70.177.52.1	AS22773 Cox Communications Inc.	`10.76ms` from Dallas, US
37.210.229.129	AS8781 Ooredoo Q.S.C.	`0.22ms` from Doha, QA
189.53.199.129	AS4230 CLARO S.A.	`10.79ms` from Fortaleza, BR
82.115.117.1	AS12360 KEVAG Telekom GmbH	`2.31ms` from Frankfurt am Main, DE
79.230.58.113	AS3320 Deutsche Telekom AG	`4.65ms` from Frankfurt am Main, DE
112.113.174.1	AS4134 CHINANET-BACKBONE	`16.27ms` from Guiyang, CN
1.58.0.1	AS4837 CHINA UNICOM China169 Backbone	`3.01ms` from Harbin, CN
49.22.128.161	AS4766 Korea Telecom	`9.45ms` from Incheon, KR
212.175.155.33	AS9121 Turk Telekomunikasyon Anonim Sirketi	`1.18ms` from Istanbul, TR
78.170.56.1	AS9121 Turk Telekomunikasyon Anonim Sirketi	`19.07ms` from Istanbul, TR
194.186.112.33	AS3216 PJSC Vimpelcom	`0.45ms` from Khabarovsk, RU
77.101.131.1	AS5089 Virgin Media Limited	`1.27ms` from London, GB
86.26.132.1	AS5089 Virgin Media Limited	`4.59ms` from London, GB
68.5.156.1	AS22773 Cox Communications Inc.	`2.27ms` from Los Angeles, US
205.157.155.193	AS33548 Unwired Broadband, LLC	`9.19ms` from Los Angeles, US
172.95.122.1	AS5650 Frontier Communications of America, Inc.	`2.85ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -f3 203.245.156.114

traceroute to 203.245.156.114 (203.245.156.114): 64 hops max, 52 byte packets

3 [] 176.126.38.47 1.099 ms

4 *

5 *

6 *

7 [AS6939] 184.105.213.138 117.548 ms

8 *

9 [AS6939] 184.104.198.254 175.873 ms

10 [AS6939] 64.71.165.22 177.122 ms

11 [AS4766] 112.174.89.253 773.408 ms

12 [AS4766] 112.174.91.177 304.95 ms

13 [AS4766] 112.174.49.86 309.21 ms

14 [AS4766] 112.188.217.102 316.869 ms

15 [AS4766] 121.191.228.246 308.99 ms

16 [AS18305] 203.245.156.114 310.453 ms

Measurement taken from

IPinfo ProbeNet in Athens, GR

On February 16th 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 AS18305 at robtex.

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