Autonomous System details

AS18420

National Central University  ·  ncu.edu.tw

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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 3 months ago on Nov 06, 2025
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


                                                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 60 IP addresses on this ASN.

IP Address Domain Domains on this IP
140.115.37.34 ██████ 3
140.115.95.98 ██████████ 2
140.115.120.175 ██████████ 2
140.115.65.172 ███████ 2
140.115.110.54 ██████████ 2
140.115.197.46 █████████ 1
140.115.126.201 ██████████ 1
140.115.53.64 ██████████ 1
140.115.1.72 ██████████ 1
140.115.53.70 █████████ 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

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

IP Address ASN Details
140.115.81.236 AS18420 National Central University 2.84ms from Taipei, TW
140.115.34.5 AS18420 National Central University 2.69ms from Taipei, TW
140.115.124.171 AS18420 National Central University 2.81ms from Taipei, TW
140.115.21.82 AS18420 National Central University 2.70ms from Taipei, TW
140.115.54.250 AS18420 National Central University 2.75ms from Taipei, TW
140.115.62.235 AS18420 National Central University 2.80ms from Taipei, TW
140.115.100.254 AS18420 National Central University 3.28ms from Taipei, TW
140.115.65.220 AS18420 National Central University 2.76ms from Taipei, TW
140.115.104.254 AS18420 National Central University 3.24ms from Taichung, TW
140.115.161.29 AS18420 National Central University 2.83ms from Taipei, TW
140.115.107.107 AS18420 National Central University 2.85ms from Taipei, TW
140.115.42.28 AS18420 National Central University 2.83ms from Taipei, TW
140.115.0.222 AS18420 National Central University 2.78ms from Taipei, TW
140.115.125.254 AS18420 National Central University 3.32ms from Taipei, TW
140.115.10.254 AS18420 National Central University 2.91ms from Taipei, TW
140.115.118.254 AS18420 National Central University 2.89ms from Taipei, TW
140.115.112.248 AS18420 National Central University 2.71ms from Taipei, TW
140.115.110.36 AS18420 National Central University 3.24ms from Taipei, TW
140.115.49.254 AS18420 National Central University 2.91ms from Taipei, TW
140.115.203.254 AS18420 National Central University 3.26ms from Taipei, TW
140.115.191.56 AS18420 National Central University 2.77ms from Taipei, TW
140.115.85.250 AS18420 National Central University 3.04ms from Taipei, TW
140.115.228.254 AS18420 National Central University 3.00ms from Taipei, TW
140.115.66.188 AS18420 National Central University 2.96ms from Taipei, TW
140.115.120.28 AS18420 National Central University 2.72ms from Taipei, 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
171.162.186.36 AS19886 Bank of America, National Association 3.96ms from Ashburn, US
91.126.211.212 AS35699 Adamo Telecom Iberia S.A. 1.12ms from Barcelona, ES
78.99.185.148 AS6855 Slovak Telekom, a.s. 1.66ms from Bratislava, SK
128.211.143.68 AS397511 Purdue University 5.01ms from Chicago, US
36.134.26.164 AS9808 China Mobile Communications Group Co., Ltd. 0.51ms from Chongqing, CN
174.174.232.180 AS7922 Comcast Cable Communications, LLC 9.32ms from Flint, US
104.11.105.180 AS7018 AT&T Enterprises, LLC 7.35ms from Houston, US
125.165.246.4 AS7713 PT Telekomunikasi Indonesia 9.27ms from Jakarta, ID
172.94.105.4 AS137409 GSL Networks Pty LTD 0.18ms from London, GB
27.110.252.116 AS9299 Philippine Long Distance Telephone Company 0.43ms from Manila, PH
60.182.109.4 AS4134 CHINANET-BACKBONE 7.27ms from Ningbo, CN
194.108.158.180 AS13036 T-Mobile Czech Republic a.s. 0.65ms from Prague, CZ
176.229.80.180 AS12400 Partner Communications Ltd. 2.24ms from Rosh Ha‘Ayin, IL
222.114.20.244 AS4766 Korea Telecom 3.04ms from Seoul, KR
20.213.136.116 AS8075 Microsoft Corporation 0.69ms from Sydney, AU
175.149.42.4 AS4837 CHINA UNICOM China169 Backbone 7.66ms from Tieling, CN
23.51.0.116 AS16625 Akamai Technologies, Inc. 0.27ms from Tokyo, JP
99.230.42.4 AS812 Rogers Communications Canada Inc. 3.42ms from Toronto, CA
105.111.180.164 AS36947 Telecom Algeria 12.38ms from Algiers, DZ
82.173.191.84 AS13127 Odido Netherlands B.V. 19.46ms from Amsterdam, NL
125.237.134.84 AS4771 Spark New Zealand Trading Ltd. 12.12ms from Auckland, NZ
87.160.19.4 AS3320 Deutsche Telekom AG 5.77ms from Berlin, DE
134.58.1.132 AS2611 BELNET 1.04ms from Brussels, BE
191.83.237.4 AS22927 Telefonica de Argentina 1.64ms from Buenos Aires, AR
166.149.61.84 AS6167 Verizon Business 16.09ms from Chicago, US

Traceroute

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

$
traceroute -a -n -q1 140.115.168.254
traceroute to 140.115.168.254 (140.115.168.254): 64 hops max, 52 byte packets
3 [] 206.81.80.150 7.951 ms
4 [AS9002] 87.245.232.236 130.162 ms
5 [AS9002] 87.245.251.209 127.894 ms
6 [AS4780] 139.175.58.81 127.982 ms
7 [AS4780] 192.72.124.237 128.206 ms
8 [AS4780] 139.175.57.104 132.616 ms
9 [AS4780] 192.72.251.38 128.154 ms
10 [AS18185] 211.76.255.221 130.143 ms
11 [AS18420] 140.115.168.254 126.414 ms
Measurement taken from IPinfo ProbeNet in Liberty Lake, US
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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