Autonomous System details

AS2501

The University of Tokyo  ·  u-tokyo.ac.jp

Japan

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AS2501 – The University of Tokyo

Field Value
Country Japan
Website u-tokyo.ac.jp
Hosted domains 109
IPv4 addresses 200,704
IPv6 addresses 79,229,371,440,083,952,629,200,000,000
ASN type Education
Registry jpnic
Updated 12 years ago on Mar 19, 2014

IP Ranges

Netblock Company Num of IPs
130.69.0.0/16 University of Tokyo 65,536
133.11.0.0/16 Japan Network Information Center 65,536
157.82.0.0/16 University of Tokyo 65,536
192.51.208.0/20 University of Tokyo 4,096
Netblock Company
2404:d540::/32 The University of Tokyo
2404:d540:1::/48 THE UNIVERSITY OF TOKYO
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WHOIS Details

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                                                ASHandle:       AS2501
                                                OrgID:          AS2501
                                                ASName:         AS2501
                                                ASNumber:       AS2501
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 109 domain names hosted across 49 IP addresses on this ASN.

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IP Address Domain Domains on this IP
130.69.94.132 ██████████ 27
130.69.94.134 ██████████ 8
130.69.198.127 ██████████ 5
133.11.32.71 ███████ 3
130.69.92.25 █████████ 3
130.69.198.247 ██████████ 3
133.11.86.86 ██████ 2
157.82.13.216 ██████████ 2
133.11.114.10 ██████████ 2
133.11.157.58 ██████████ 2

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Peers

There are 2 peers for this ASN.

Peers Name
AS2500 WIDE Project
AS2907 Research Organization of Information and Systems, National Institute of Informatics
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Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS2500 WIDE Project
AS2907 Research Organization of Information and Systems, National Institute of Informatics
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
157.82.248.233 AS2501 The University of Tokyo 2.49ms from Tokyo, JP
130.69.250.103 AS2501 The University of Tokyo 1.90ms from Tokyo, JP
133.11.119.233 AS2501 The University of Tokyo 1.50ms from Tokyo, JP
133.11.157.38 AS2501 The University of Tokyo 2.17ms from Tokyo, JP
130.69.123.38 AS2501 The University of Tokyo 2.19ms from Tokyo, JP
133.11.36.65 AS2501 The University of Tokyo 2.67ms from Tokyo, JP
130.69.103.1 AS2501 The University of Tokyo 2.65ms from Tokyo, JP
133.11.38.125 AS2501 The University of Tokyo 1.99ms from Tokyo, JP
130.69.125.21 AS2501 The University of Tokyo 1.95ms from Tokyo, JP
133.11.178.1 AS2501 The University of Tokyo 1.38ms from Tokyo, JP
130.69.79.8 AS2501 The University of Tokyo 1.33ms from Tokyo, JP
133.11.230.180 AS2501 The University of Tokyo 2.06ms from Tokyo, JP
157.82.47.7 AS2501 The University of Tokyo 3.30ms from Tokyo, JP
157.82.232.123 AS2501 The University of Tokyo 2.43ms from Tokyo, JP
133.11.101.185 AS2501 The University of Tokyo 1.28ms from Tokyo, JP
157.82.162.1 AS2501 The University of Tokyo 2.86ms from Tokyo, JP
130.69.92.189 AS2501 The University of Tokyo 1.55ms from Tokyo, JP
133.11.1.39 AS2501 The University of Tokyo 2.09ms from Tokyo, JP
130.69.196.204 AS2501 The University of Tokyo 2.07ms from Tokyo, JP
133.11.200.31 AS2501 The University of Tokyo 2.04ms from Tokyo, JP
130.69.244.3 AS2501 The University of Tokyo 2.34ms from Tokyo, JP
157.82.243.180 AS2501 The University of Tokyo 2.49ms from Tokyo, JP
130.69.116.31 AS2501 The University of Tokyo 2.07ms from Tokyo, JP
157.82.145.210 AS2501 The University of Tokyo 2.75ms from Tokyo, JP
133.11.226.173 AS2501 The University of Tokyo 2.15ms from Tokyo, JP

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
47.85.49.245 AS45102 Alibaba (US) Technology Co., Ltd. 0.57ms from Ashburn, US
72.152.162.5 AS8075 Microsoft Corporation 0.60ms from Ashburn, US
101.201.120.229 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.48ms from Beijing, CN
81.0.70.85 AS12301 Invitech ICT Services Kft. 0.73ms from Budapest, HU
198.12.106.165 AS36352 HostPapa 0.17ms from Chicago, US
101.2.166.117 AS38592 Chittagong Online Limited AS38592 AP 6.07ms from Dhaka, BD
27.156.250.53 AS4134 CHINANET BACKBONE 3.11ms from Fuzhou, CN
221.182.196.37 AS9808 China Mobile Communications Group Co., Ltd. 13.51ms from Guangzhou, CN
59.31.176.85 AS4766 Korea Telecom 3.18ms from Incheon, KR
158.143.41.229 AS786 Jisc Services Limited 0.94ms from London, GB
90.116.198.197 AS3215 Orange S.A. 4.48ms from Marseille, FR
82.163.32.229 AS34758 Axera SpA 3.75ms from Milan, IT
13.52.120.101 AS16509 Amazon.com, Inc. 0.15ms from San Jose, US
211.113.251.101 AS4670 Shinbiro 6.15ms from Seoul, KR
3.105.154.149 AS16509 Amazon.com, Inc. 0.11ms from Sydney, AU
63.222.191.5 AS3491 PCCW Global (HK) Ltd. 0.33ms from Sydney, AU
126.235.9.21 AS17676 SoftBank Corp. 3.03ms from Tokyo, JP
177.74.100.5 AS271947 EXODO 20 FIBRA OPTICA S.A.S. 5.44ms from Bogotá, CO
3.150.236.37 AS16509 Amazon.com, Inc. 0.09ms from Columbus, US
91.100.165.5 AS15516 DKTV A/S 0.71ms from Copenhagen, DK
87.156.160.133 AS3320 Deutsche Telekom AG 1.18ms from Frankfurt am Main, DE
183.143.79.101 AS4134 CHINANET BACKBONE 6.48ms from Hangzhou, CN
43.154.233.21 AS132203 Tencent Building, Kejizhongyi Avenue 0.43ms from Hong Kong, HK
118.107.33.213 AS152194 CTG Server Limited 1.17ms from Hong Kong, HK
211.41.128.181 AS9689 SK Broadband Co Ltd 1.16ms from Incheon, KR

Traceroute

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

$
traceroute -a -n -q1 -f2 157.82.113.134
traceroute to 157.82.113.134 (157.82.113.134): 64 hops max, 52 byte packets
2 [AS15169] 108.170.248.180 222.801 ms
3 *
4 [AS2907] 150.99.11.32 252.473 ms
5 [AS2907] 150.99.195.234 237.668 ms
6 *
7 [AS2501] 157.82.113.134 252.475 ms
Measurement taken from IPinfo ProbeNet in Brussels, BE
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 AS2501 at robtex.

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