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
157.82.236.181 AS2501 The University of Tokyo 3.84ms from Tokyo, JP
133.11.21.20 AS2501 The University of Tokyo 2.07ms from Tokyo, JP
157.82.153.223 AS2501 The University of Tokyo 2.97ms from Tokyo, JP
157.82.197.193 AS2501 The University of Tokyo 5.79ms from Tokyo, JP
157.82.171.15 AS2501 The University of Tokyo 2.77ms from Tokyo, JP
133.11.16.44 AS2501 The University of Tokyo 1.98ms from Tokyo, JP
133.11.55.130 AS2501 The University of Tokyo 1.23ms from Tokyo, JP
157.82.36.4 AS2501 The University of Tokyo 2.95ms from Tokyo, JP
157.82.240.139 AS2501 The University of Tokyo 2.58ms from Tokyo, JP
157.82.247.31 AS2501 The University of Tokyo 2.62ms from Tokyo, JP
157.82.172.129 AS2501 The University of Tokyo 3.05ms from Tokyo, JP
133.11.144.12 AS2501 The University of Tokyo 2.15ms from Tokyo, JP
157.82.8.97 AS2501 The University of Tokyo 2.08ms from Tokyo, JP
130.69.250.103 AS2501 The University of Tokyo 1.90ms from Tokyo, JP
130.69.125.21 AS2501 The University of Tokyo 1.95ms from Tokyo, JP
133.11.130.202 AS2501 The University of Tokyo 1.33ms from Tokyo, JP
133.11.124.27 AS2501 The University of Tokyo 1.20ms from Tokyo, JP
133.11.40.73 AS2501 The University of Tokyo 2.19ms from Tokyo, JP
133.11.218.101 AS2501 The University of Tokyo 2.12ms from Tokyo, JP
133.11.1.39 AS2501 The University of Tokyo 2.09ms from Tokyo, JP
133.11.159.129 AS2501 The University of Tokyo 2.66ms from Tokyo, JP
133.11.38.125 AS2501 The University of Tokyo 1.99ms from Tokyo, JP
157.82.46.83 AS2501 The University of Tokyo 2.02ms from Tokyo, JP
157.82.104.81 AS2501 The University of Tokyo 45.32ms from Tokyo, JP
133.11.140.131 AS2501 The University of Tokyo 2.00ms 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
40.136.120.245 AS7029 Windstream Communications LLC 0.31ms from Ashburn, US
79.202.55.85 AS3320 Deutsche Telekom AG 2.40ms from Berlin, DE
201.206.84.165 AS11830 Instituto Costarricense de Electricidad y Telecom. 2.42ms from Curridabat, CR
185.192.57.37 AS136796 CORELINK JAPAN 0.29ms from Frankfurt am Main, DE
211.179.113.53 AS9318 SK Broadband Co Ltd 1.08ms from Incheon, KR
81.78.180.117 AS5378 Vodafone Limited 3.99ms from London, GB
98.53.85.165 AS7922 Comcast Cable Communications, LLC 9.98ms from Miami, US
217.112.103.229 AS49605 Digital Telecommunication Services S.r.l. 12.62ms from Milan, IT
212.134.3.117 AS6838 Christopher Luke 0.24ms from New York City, US
77.137.228.69 AS49902 SOCIETE REUNIONNAISE DU RADIOTELEPHONE SCS 2.45ms from Saint-Denis, RE
23.44.245.229 AS16625 Akamai Technologies, Inc. 0.10ms from Seattle, US
211.113.251.101 AS4670 Shinbiro 6.15ms from Seoul, KR
211.38.232.165 AS4766 Korea Telecom 5.96ms from Seoul, KR
8.49.209.5 AS3356 Level 3 Parent, LLC 0.31ms from Singapore, SG
221.233.30.197 AS4134 CHINANET BACKBONE 4.70ms from Wuhan, CN
46.251.160.69 AS12479 Orange Espagne SA 5.73ms from Zaragoza, ES
20.123.184.149 AS8075 Microsoft Corporation 0.25ms from Amsterdam, NL
195.12.113.21 AS15549 National Information Technologies Joint-Stock Company 2.40ms from Astana, KZ
106.12.160.213 AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd. 4.04ms from Beijing, CN
24.12.11.69 AS7922 Comcast Cable Communications, LLC 5.47ms from Chicago, US
50.207.139.165 AS7922 Comcast Cable Communications, LLC 1.00ms from Chicago, US
98.243.195.165 AS7922 Comcast Cable Communications, LLC 11.27ms from Flint, US
83.3.66.69 AS5617 Orange Polska Spolka Akcyjna 7.89ms from Gdansk, PL
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

Traceroute

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

$
traceroute -a -n -q1 -f2 -m11 133.11.172.245
traceroute to 133.11.172.245 (133.11.172.245): 11 hops max, 52 byte packets
3 [] 210.171.224.150 33.765 ms
4 [AS2907] 150.99.11.32 34.089 ms
5 [AS2907] 150.99.190.98 34.011 ms
6 [AS2501] 133.11.206.154 34.365 ms
7 [AS2501] 133.11.206.149 34.416 ms
8 [AS2501] 133.11.130.114 34.114 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Chang-hua, TW
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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