Autonomous System details

AS18420

National Central University  ·  ncu.edu.tw

Taiwan

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AS18420 – National Central University

Field Value
Country Taiwan
Website ncu.edu.tw
Hosted domains 64
IPv4 addresses 65,536
IPv6 addresses 0
ASN type Education
Registry apnic
Updated 4 months ago on Nov 06, 2025

IP Ranges

Netblock Company Num of IPs
140.115.0.0/16 Ministry of Education Computer Center 65,536

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS18420
                                                OrgID:          AS18420
                                                ASName:         AS18420
                                                ASNumber:       AS18420
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 64 domain names hosted across 58 IP addresses on this ASN.

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IP Address Domain Domains on this IP
140.115.37.34 ██████ 3
140.115.95.98 ██████████ 2
140.115.120.175 ██████████ 2
140.115.126.191 ██████████ 2
140.115.35.138 ████████ 2
140.115.65.172 ██████ 2
140.115.110.54 ██████████ 2
140.115.16.181 ███████ 1
140.115.54.250 ██████████ 1
140.115.127.147 ██████████ 1

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Peers

There are 2 peers for this ASN.

Peers Name
AS18185 NTCU
AS7539 National Center for High-performance Computing
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS18185 NTCU
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
140.115.99.254 AS18420 National Central University 3.07ms from Taichung, TW
140.115.49.254 AS18420 National Central University 2.83ms from Taipei, TW
140.115.224.11 AS18420 National Central University 2.84ms from Taipei, TW
140.115.71.131 AS18420 National Central University 2.83ms from Taipei, TW
140.115.77.103 AS18420 National Central University 2.80ms from Taipei, TW
140.115.108.215 AS18420 National Central University 2.79ms from Taipei, TW
140.115.104.254 AS18420 National Central University 3.15ms from Taipei, TW
140.115.225.2 AS18420 National Central University 2.87ms from Taipei, TW
140.115.65.54 AS18420 National Central University 2.83ms from Taipei, TW
140.115.115.37 AS18420 National Central University 2.79ms from Taipei, TW
140.115.179.254 AS18420 National Central University 3.33ms from Taipei, TW
140.115.175.254 AS18420 National Central University 3.30ms from Taichung, TW
140.115.114.254 AS18420 National Central University 2.95ms from Taipei, TW
140.115.106.254 AS18420 National Central University 3.66ms from Taipei, TW
140.115.231.254 AS18420 National Central University 3.07ms from Taipei, TW
140.115.58.2 AS18420 National Central University 3.09ms from Taipei, TW
140.115.6.232 AS18420 National Central University 2.86ms from Taipei, TW
140.115.19.99 AS18420 National Central University 2.85ms from Taipei, TW
140.115.113.254 AS18420 National Central University 3.19ms from Taipei, TW
140.115.164.254 AS18420 National Central University 2.83ms from Taipei, TW
140.115.57.254 AS18420 National Central University 3.23ms from Taipei, TW
140.115.183.217 AS18420 National Central University 2.77ms from Taipei, TW
140.115.60.14 AS18420 National Central University 2.84ms from Taipei, TW
140.115.94.254 AS18420 National Central University 3.05ms from Taichung, TW
140.115.169.254 AS18420 National Central University 3.25ms from Taichung, TW

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
35.82.241.212 AS16509 Amazon.com, Inc. 0.22ms from Boardman, US
81.182.142.20 AS5483 Magyar Telekom Plc. 0.65ms from Budapest, HU
196.138.0.116 AS24835 Vodafone Data 6.74ms from Cairo, EG
112.19.215.4 AS9808 China Mobile Communications Group Co., Ltd. 14.59ms from Chengdu, CN
34.71.78.52 AS396982 Google LLC 0.12ms from Council Bluffs, US
70.170.8.132 AS22773 Cox Communications Inc. 6.24ms from Los Angeles, US
98.58.78.196 AS7922 Comcast Cable Communications, LLC 7.21ms from Miami, US
31.188.93.148 AS24608 WIND TRE S.P.A. 12.08ms from Milan, IT
20.118.159.148 AS8075 Microsoft Corporation 0.55ms from Phoenix, US
170.39.61.180 AS394752 Avative Fiber 1.79ms from Salt Lake City, US
69.112.197.52 AS6128 Cablevision Systems Corp. 7.40ms from Secaucus, US
223.32.47.68 AS9644 SK Telecom 8.78ms from Seoul, KR
50.71.174.20 AS6327 Shaw Communications 4.33ms from Winnipeg, CA
200.166.24.100 AS4230 CLARO S.A. 11.45ms from Fortaleza, BR
91.11.3.100 AS3320 Deutsche Telekom AG 7.52ms from Frankfurt am Main, DE
27.155.138.180 AS4134 CHINANET-BACKBONE 2.97ms from Fuzhou, CN
47.154.182.132 AS5650 Frontier Communications of America, Inc. 2.68ms from Los Angeles, US
201.206.146.212 AS11830 Instituto Costarricense de Electricidad y Telecom. 1.48ms from San Pedro, CR
36.39.206.4 AS17577 LG HelloVision Corp. 6.64ms from Seoul, KR
118.172.135.180 AS23969 TOT Public Company Limited 8.55ms from Bangkok, TH
152.136.151.36 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.71ms from Beijing, CN
188.125.38.84 AS8374 Polkomtel Sp. z o.o. 13.67ms from Berlin, DE
73.73.224.180 AS7922 Comcast Cable Communications, LLC 5.34ms from Chicago, US
14.226.141.164 AS45899 VNPT Corp 2.69ms from Da Nang, VN
176.39.9.196 AS202103 Lanet Network Ltd 5.32ms from Kyiv, UA

Traceroute

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

$
traceroute -a -n -q1 -f3 -m12 140.115.147.144
traceroute to 140.115.147.144 (140.115.147.144): 12 hops max, 52 byte packets
4 [AS9002] 87.245.234.187 178.481 ms
5 [AS9002] 87.245.251.209 178.615 ms
6 [AS4780] 139.175.58.91 178.552 ms
7 [AS4780] 139.175.57.106 178.827 ms
8 [AS4780] 192.72.251.38 177.107 ms
9 [AS18185] 211.76.255.201 178.968 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Bucharest, RO
On

Related Networks

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 AS18420 at robtex.

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