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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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
157.82.8.166 AS2501 The University of Tokyo 1.99ms from Tokyo, JP
157.82.141.1 AS2501 The University of Tokyo 2.99ms from Tokyo, JP
133.11.49.116 AS2501 The University of Tokyo 2.09ms from Tokyo, JP
157.82.121.65 AS2501 The University of Tokyo 3.47ms from Tokyo, JP
133.11.182.44 AS2501 The University of Tokyo 2.07ms from Tokyo, JP
133.11.143.206 AS2501 The University of Tokyo 10.94ms from Tokyo, JP
157.82.236.181 AS2501 The University of Tokyo 3.90ms from Tokyo, JP
157.82.161.12 AS2501 The University of Tokyo 2.78ms from Tokyo, JP
157.82.92.116 AS2501 The University of Tokyo 2.84ms from Tokyo, JP
133.11.178.1 AS2501 The University of Tokyo 1.36ms from Tokyo, JP
157.82.212.80 AS2501 The University of Tokyo 2.63ms from Tokyo, JP
133.11.222.2 AS2501 The University of Tokyo 2.11ms from Tokyo, JP
157.82.152.46 AS2501 The University of Tokyo 2.89ms from Tokyo, JP
157.82.228.129 AS2501 The University of Tokyo 15.57ms from Tokyo, JP
157.82.150.197 AS2501 The University of Tokyo 2.89ms from Tokyo, JP
157.82.104.81 AS2501 The University of Tokyo 45.32ms from Tokyo, JP
133.11.53.23 AS2501 The University of Tokyo 2.17ms from Tokyo, JP
133.11.144.17 AS2501 The University of Tokyo 1.95ms from Tokyo, JP
157.82.216.1 AS2501 The University of Tokyo 2.57ms from Tokyo, JP
157.82.158.65 AS2501 The University of Tokyo 2.76ms from Tokyo, JP
133.11.125.202 AS2501 The University of Tokyo 1.30ms from Tokyo, JP
2404:d540:1:589:3:1:1:1 AS2501 The University of Tokyo 0.97ms from Tokyo, JP
157.82.254.226 AS2501 The University of Tokyo 2.16ms from Tokyo, JP
133.11.205.90 AS2501 The University of Tokyo 1.25ms from Tokyo, JP
157.82.145.22 AS2501 The University of Tokyo 2.88ms 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
69.84.193.165 AS394089 Google LLC 0.12ms from Ashburn, US
71.31.150.149 AS7029 Windstream Communications LLC 2.79ms from Atlanta, US
183.90.170.213 AS132300 NIPA TECHNOLOGY CO., LTD 0.24ms from Bangkok, TH
168.93.138.37 AS16399 First Communications LLC 1.39ms from Chicago, US
35.224.233.229 AS396982 Google LLC 0.13ms from Council Bluffs, US
171.49.184.197 AS24560 Bharti Airtel Ltd., Telemedia Services 9.15ms from Delhi, IN
180.211.177.213 AS45588 Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider. 3.96ms from Dhaka, BD
23.196.240.37 AS16625 Akamai Technologies, Inc. 0.30ms from Duesseldorf, DE
92.117.159.213 AS8881 1&1 Versatel GmbH 2.74ms from Duesseldorf, DE
3.126.247.85 AS16509 Amazon.com, Inc. 0.18ms from Frankfurt am Main, DE
91.59.153.53 AS3320 Deutsche Telekom AG 2.21ms from Frankfurt am Main, DE
150.129.218.149 AS134365 Ansheng Network Technology Co., Limited 1.64ms from Hong Kong, HK
73.77.36.245 AS7922 Comcast Cable Communications, LLC 6.85ms from Houston, US
200.151.91.69 AS7738 V tal 19.54ms from Joao Pessoa, BR
81.145.98.197 AS2856 British Telecommunications PLC 6.10ms from London, GB
81.46.208.101 AS16371 acens AS 1.15ms from Madrid, ES
190.185.106.165 AS52438 PLANISYS S.A. 0.17ms from Miami, US
182.166.157.21 AS17511 OPTAGE Inc. 2.32ms from Osaka, JP
3.226.37.245 AS14618 Amazon.com, Inc. 0.42ms from Reston, US
18.205.186.117 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
210.250.129.117 AS2516 KDDI CORPORATION 1.80ms from Sapporo, JP
101.35.155.245 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.40ms from Shanghai, CN
99.212.212.213 AS812 Rogers Communications Canada Inc. 16.97ms from Toronto, CA
5.3.116.117 AS41682 JSC "ER-Telecom Holding" 12.64ms from Yekaterinburg, RU
213.19.196.133 AS3356 Level 3 Parent, LLC 0.36ms from Amsterdam, NL

Traceroute

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

$
traceroute -a -n -q1 -f5 -m13 157.82.6.165
traceroute to 157.82.6.165 (157.82.6.165): 13 hops max, 52 byte packets
5 [] 103.246.232.150 43.99 ms
6 [AS2907] 150.99.11.34 46.024 ms
7 [AS2907] 150.99.190.98 47.83 ms
8 *
9 [AS2501] 133.11.206.149 51.029 ms
10 [AS2501] 133.11.130.114 52.558 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
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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