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 65
IPv4 addresses 65,536
IPv6 addresses 0
ASN type Education
Registry apnic
Updated a month 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 65 domain names hosted across 61 IP addresses on this ASN.

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IP Address Domain Domains on this IP
140.115.37.34 ██████ 3
140.115.65.172 ██████ 2
140.115.120.175 ██████████ 2
140.115.110.54 ██████████ 2
140.115.95.98 ██████████ 2
140.115.35.47 ██████████ 1
140.115.53.64 ██████████ 1
140.115.77.249 ██████████ 1
140.115.111.97 ██████████ 1
140.115.59.65 ████████ 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

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

IP Address ASN Details
140.115.119.254 AS18420 National Central University 3.50ms from Taichung, TW
140.115.59.65 AS18420 National Central University 3.04ms from Taipei, TW
140.115.136.254 AS18420 National Central University 3.29ms from Taipei, TW
140.115.145.153 AS18420 National Central University 3.09ms from Taipei, TW
140.115.157.59 AS18420 National Central University 3.50ms from Taipei, TW
140.115.3.233 AS18420 National Central University 3.04ms from Taipei, TW
140.115.120.28 AS18420 National Central University 3.03ms from Taipei, TW
140.115.147.254 AS18420 National Central University 3.52ms from Taipei, TW
140.115.61.232 AS18420 National Central University 3.19ms from Taipei, TW
140.115.165.20 AS18420 National Central University 3.15ms from Taipei, TW
140.115.82.252 AS18420 National Central University 3.08ms from Taipei, TW
140.115.36.105 AS18420 National Central University 3.35ms from Taichung, TW
140.115.233.254 AS18420 National Central University 3.60ms from Taipei, TW
140.115.142.155 AS18420 National Central University 7.87ms from Taipei, TW
140.115.117.22 AS18420 National Central University 3.34ms from Taipei, TW
140.115.46.254 AS18420 National Central University 3.56ms from Taipei, TW
140.115.34.154 AS18420 National Central University 3.04ms from Taipei, TW
140.115.35.2 AS18420 National Central University 3.03ms from Taipei, TW
140.115.149.254 AS18420 National Central University 3.50ms from Taipei, TW
140.115.27.254 AS18420 National Central University 3.23ms from Taipei, TW
140.115.190.254 AS18420 National Central University 3.23ms from Taipei, TW
140.115.29.254 AS18420 National Central University 3.58ms from Taipei, TW
140.115.189.254 AS18420 National Central University 3.54ms from Taipei, TW
140.115.212.19 AS18420 National Central University 3.15ms from Taipei, TW
140.115.183.217 AS18420 National Central University 3.11ms 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
20.4.124.212 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
91.17.147.20 AS3320 Deutsche Telekom AG 5.80ms from Berlin, DE
89.180.77.4 AS2860 NOS COMUNICACOES, S.A. 15.34ms from Braga, PT
160.178.72.20 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 10.53ms from Casablanca, MA
24.51.50.100 AS4474 TCT West, Inc. 9.36ms from Denver, US
51.112.118.164 AS16509 Amazon.com, Inc. 0.08ms from Dubai, AE
87.186.81.196 AS3320 Deutsche Telekom AG 10.49ms from Frankfurt am Main, DE
218.45.102.100 AS17511 OPTAGE Inc. 4.29ms from Osaka, JP
92.220.221.52 AS29695 Altibox AS 11.01ms from Sandefjord, NO
123.143.114.20 AS3786 LG DACOM Corporation 1.79ms from Seoul, KR
71.233.180.116 AS7922 Comcast Cable Communications, LLC 5.26ms from Boston, US
193.190.249.148 AS2611 BELNET 0.92ms from Brussels, BE
105.198.252.100 AS36935 Vodafone Data 8.15ms from Cairo, EG
139.68.113.20 AS398822 Bose Corporation 2.98ms from Chicago, US
92.131.114.148 AS3215 Orange S.A. 4.34ms from Frankfurt am Main, DE
217.86.64.68 AS3320 Deutsche Telekom AG 6.93ms from Frankfurt am Main, DE
79.229.80.132 AS3320 Deutsche Telekom AG 1.70ms from Frankfurt am Main, DE
84.200.176.20 AS44066 firstcolo GmbH 0.50ms from Frankfurt am Main, DE
94.167.60.244 AS1267 WIND TRE S.P.A. 12.98ms from Frosinone, IT
94.122.96.148 AS12978 ANDROMEDA TV DIGITAL PLATFORM ISLETMECILIGI A.S. 12.38ms from Izmir, TR
138.4.119.4 AS766 RedIRIS Autonomous System 0.69ms from Madrid, ES
190.93.88.4 AS274107 INCONET TELECOM, SRL 19.53ms from Miami, US
38.70.104.68 AS40545 Empire Access 8.13ms from New York City, US
73.69.37.196 AS7922 Comcast Cable Communications, LLC 13.36ms from Providence, US
161.202.71.196 AS36351 IBM Cloud 0.59ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 140.115.250.86
traceroute to 140.115.250.86 (140.115.250.86): 6 hops max, 52 byte packets
2 [] 206.81.80.150 16.93 ms
3 [AS9002] 87.245.232.200 142.655 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Calgary, CA
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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