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 6 months ago on Nov 06, 2025
Netblock Company Num of IPs
140.115.0.0/16 National Central University 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 58 IP addresses on this ASN.

IP Address Domain Domains on this IP
140.115.37.34 ██████ 3
140.115.62.215 ██████████ 2
140.115.95.98 ██████████ 2
140.115.120.175 ██████████ 2
140.115.35.138 ████████ 2
140.115.110.54 ██████████ 2
140.115.107.224 ██████████ 2
140.115.65.172 ███████ 2
140.115.53.64 ██████████ 1
140.115.60.11 ██████████ 1

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Useful for Cybersecurity

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
140.115.53.120 AS18420 National Central University 2.78ms from Taipei, TW
140.115.89.254 AS18420 National Central University 2.85ms from Taipei, TW
140.115.27.254 AS18420 National Central University 2.97ms from Taipei, TW
140.115.157.254 AS18420 National Central University 3.33ms from Taipei, TW
140.115.149.254 AS18420 National Central University 3.23ms from Taipei, TW
140.115.119.254 AS18420 National Central University 3.25ms from Taipei, TW
140.115.212.19 AS18420 National Central University 2.94ms from Taipei, TW
140.115.169.254 AS18420 National Central University 3.21ms from Taipei, TW
140.115.165.70 AS18420 National Central University 2.93ms from Taipei, TW
140.115.207.254 AS18420 National Central University 3.09ms from Taipei, TW
140.115.114.254 AS18420 National Central University 3.09ms from Taichung, TW
140.115.98.254 AS18420 National Central University 3.21ms from Taipei, TW
140.115.55.127 AS18420 National Central University 2.82ms from Taipei, TW
140.115.92.254 AS18420 National Central University 2.87ms from Taipei, TW
140.115.62.27 AS18420 National Central University 2.74ms from Taipei, TW
140.115.67.154 AS18420 National Central University 2.84ms from Taipei, TW
140.115.80.21 AS18420 National Central University 2.85ms from Taipei, TW
140.115.17.71 AS18420 National Central University 2.78ms from Taipei, TW
140.115.174.254 AS18420 National Central University 3.15ms from Taipei, TW
140.115.10.254 AS18420 National Central University 2.87ms from Taipei, TW
140.115.216.10 AS18420 National Central University 3.02ms from Taipei, TW
140.115.106.254 AS18420 National Central University 3.27ms from Taipei, TW
140.115.122.254 AS18420 National Central University 2.93ms from Taipei, TW
140.115.232.254 AS18420 National Central University 2.99ms from Taipei, TW
140.115.11.160 AS18420 National Central University 2.82ms 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
108.39.207.196 AS701 Verizon Business 6.49ms from Ashburn, US
134.58.1.132 AS2611 BELNET 0.88ms from Brussels, BE
62.235.0.68 AS5432 Proximus NV 2.11ms from Brussels, BE
34.252.109.100 AS16509 Amazon.com, Inc. 0.19ms from Dublin, IE
86.154.98.212 AS2856 British Telecommunications PLC 7.37ms from Erith, GB
196.29.131.4 AS7020 Business Connexion Communications 0.92ms from Johannesburg, ZA
95.179.7.164 AS12389 PJSC Rostelecom 8.47ms from Moscow, RU
68.53.173.36 AS7922 Comcast Cable Communications, LLC 6.33ms from Murfreesboro, US
150.31.56.68 AS2497 Internet Initiative Japan Inc. 12.31ms from Osaka, JP
64.181.252.68 AS31898 Oracle Corporation 0.20ms from San Jose, US
168.138.164.180 AS31898 Oracle Corporation 0.14ms from Singapore, SG
161.117.73.244 AS45102 Alibaba (US) Technology Co., Ltd. 0.80ms from Singapore, SG
13.49.13.20 AS16509 Amazon.com, Inc. 0.12ms from Stockholm, SE
156.67.202.100 AS31510 Innsbrucker Kommunalbetriebe AG 8.44ms from Vienna, AT
13.93.77.52 AS8075 Microsoft Corporation 0.24ms from Amsterdam, NL
157.85.97.116 AS56309 Siamdata Communication Co.,Ltd. 1.00ms from Bangkok, TH
44.238.208.100 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
104.22.63.36 AS13335 Cloudflare, Inc. 1.05ms from Chicago, US
130.232.179.164 AS1741 CSC - Tieteen tietotekniikan keskus Oy 7.62ms from Helsinki, FI
60.217.55.68 AS4837 CHINA UNICOM China169 Backbone 6.82ms from Jinan, CN
196.35.1.68 AS3741 Dimension Data 2.85ms from Johannesburg, ZA
112.141.233.4 AS9443 Vocus Retail 2.97ms from Melbourne, AU
176.193.117.4 AS12714 PJSC MegaFon 2.07ms from Moscow, RU
193.251.180.116 AS3215 Orange S.A. 2.81ms from Paris, FR
3.234.122.116 AS14618 Amazon.com, Inc. 0.27ms from Reston, US

Traceroute

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

$
traceroute -a -n -q1 -f4 140.115.34.254
traceroute to 140.115.34.254 (140.115.34.254): 64 hops max, 52 byte packets
4 [AS3491] 63.223.9.226 337.502 ms
5 *
6 *
7 [AS4780] 139.175.58.209 338.445 ms
8 [AS4780] 139.175.57.106 329.189 ms
9 [AS4780] 192.72.251.38 329.23 ms
10 [AS18185] 211.76.255.201 331.937 ms
11 [AS18420] 140.115.34.254 332.393 ms
Measurement taken from IPinfo ProbeNet in Accra, GH
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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