157.82.0.0/16

AS2501 · The University of Tokyo

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Summary

Country	Japan
Domain	u-tokyo.ac.jp
ASN	AS2501
Registry	APNIC
ID	UTNET

WHOIS Details

inetnum:        157.82.0.0 - 157.82.255.255
netname:        UTNET
descr:          University of Tokyo
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        Authoritative information regarding assignments and
remarks:        allocations made from within this block can also be
remarks:        queried at whois.nic.ad.jp. To obtain an English
remarks:        output query whois -h whois.nic.ad.jp x.x.x.x/e
country:        JP
mnt-by:         MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
status:         ALLOCATED PORTABLE
last-modified:  2016-05-11T01:21:56Z
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, japan
e-mail:         [email protected]
abuse-mailbox:  [email protected]
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2024-11-27
mnt-by:         MAINT-JPNIC
last-modified:  2025-09-04T01:00:00Z
source:         APNIC

role:           Japan Network Information Center
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         [email protected]
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2022-01-05T03:04:02Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 157.0.0.0/8

Range	ASN	Company	Num of IPs
157.32.0.0/12	AS55836	Reliance Jio Infocomm Limited	1,048,576
157.48.0.0/14	AS55836	Reliance Jio Infocomm Limited	262,144
157.28.0.0/15	AS8968	Mediaset Com	131,072
157.19.0.0/16	AS2907	National University Corporation Muroran Institute of Technology	65,536
157.135.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.1.0.0/16	AS2907	Research Organization of Information and Systems, National Institute of Informatics	65,536
157.114.0.0/16	AS2907	Institue National Colleges of Technology, Japan	65,536
157.13.0.0/16	AS2907	Kindai Univercity,	65,536
157.127.0.0/16	AS1906	Northrop Grumman Corp.	65,536
157.193.0.0/16	AS2611	Research network University of Ghent	65,536
157.178.0.0/16	AS15337	William Rainey Harper College	65,536
157.242.0.0/16	AS25789	Loyola Marymount University	65,536
157.174.0.0/16	AS26298	Florida Blue	65,536
157.105.0.0/16	AS2907	National University Corporation Tokyo Gakugei University	65,536
157.150.0.0/16	AS2647	United Nations	65,536
157.102.0.0/16	AS2907	Teikyo University	65,536
157.123.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.210.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.142.0.0/16	AS16922	University of Oklahoma HSC	65,536
157.148.0.0/16	AS136958	China Unicom Guangdong province network	65,536
157.255.0.0/16	AS136958	China Unicom Guangdong province network	65,536
157.8.0.0/16	AS18071	Panasonic Information Systems Co., Ltd	65,536
157.147.0.0/16	AS2527	Sony Network Communications Inc.	65,536
157.200.0.0/16	AS16086	Finnair Oy	65,536
157.90.0.0/16	AS24940	Hetzner Online GmbH	65,536
157.159.0.0/16	AS2094	SCES COMMUNS IMT BUSINESS SCHOOL TELECOM SUD PARIS	65,536
157.139.0.0/16	AS20252	Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University	65,536
157.94.0.0/16	AS16086	Elenia Oy	65,536
157.136.0.0/16	AS2200	Centre National de la Recherche Scientifique	65,536
157.25.0.0/16	AS12912	T-Mobile Polska S.A.	65,536
157.141.0.0/16	AS27064	Navy Network Information Center (NNIC)	65,536
157.111.0.0/16	AS2907	National Institutes for Quantum and Radiological Science and Technology	65,536
157.255.0.0/16	AS135061	China Unicom Guangdong province network	65,536
157.89.0.0/16	AS13327	Eastern Kentucky University	65,536
157.0.0.0/16	AS140717	China Unicom Jiangsu province network	65,536
157.152.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.175.0.0/16	AS16509	Amazon Data Services Bahrain	65,536
157.241.0.0/16	AS16509	Amazon Data Services Bahrain	65,536
157.243.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.182.0.0/16	AS12118	West Virginia University	65,536
157.122.0.0/16	AS136958	China Unicom Guangdong province network	65,536
157.122.0.0/16	AS134543	China Unicom Guangdong province network	65,536
157.148.0.0/16	AS134543	China Unicom Guangdong province network	65,536
157.255.0.0/16	AS134543	China Unicom Guangdong province network	65,536
157.190.0.0/16	AS1213	Munster Technological University	65,536
157.155.0.0/16	AS17983	Coles Supermarkets Australia Pty Ltd	65,536
157.27.0.0/16	AS137	UNI-Verona	65,536
157.229.0.0/16	AS122	UPMC	65,536
157.192.0.0/16	AS138384	Rakuten Mobile, Inc.	65,536

Hosted domains

There are 18 domain names hosted across 16 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
157.82.142.107	hklab.org	2
157.82.13.216	hongo-kioku.tokyo	2
157.82.236.29	ipmu.jp	1
157.82.142.124	cw503.net	1
157.82.133.212	orthoscope.jp	1
157.82.80.126	irj.co.jp	1
157.82.77.33	rcast.jp	1
157.82.81.107	inami-agent.com	1
157.82.13.215	manseibashi.com	1
157.82.157.21	kitsuregawa.com	1
157.82.212.80	cyberforest.jp	1
157.82.80.253	imaq.net	1
157.82.29.70	jboli.org	1
157.82.227.176	tacmi-suggest.jp	1
157.82.238.86	utgenome.org	1
157.82.238.55	personal-genome.jp	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

1,944 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
157.82.188.1	AS2501 The University of Tokyo	`1.66ms` from Tokyo, JP
157.82.160.214	AS2501 The University of Tokyo	`2.68ms` from Tokyo, JP
157.82.196.174	AS2501 The University of Tokyo	`8.46ms` from Tokyo, JP
157.82.52.63	AS2501 The University of Tokyo	`2.53ms` from Tokyo, JP
157.82.158.73	AS2501 The University of Tokyo	`2.80ms` from Tokyo, JP
157.82.243.250	AS2501 The University of Tokyo	`2.61ms` from Tokyo, JP
157.82.169.1	AS2501 The University of Tokyo	`2.84ms` from Tokyo, JP
157.82.162.17	AS2501 The University of Tokyo	`2.78ms` from Tokyo, JP
157.82.157.56	AS2501 The University of Tokyo	`2.08ms` from Tokyo, JP
157.82.47.7	AS2501 The University of Tokyo	`3.50ms` from Tokyo, JP
157.82.168.86	AS2501 The University of Tokyo	`2.64ms` from Tokyo, JP
157.82.146.10	AS2501 The University of Tokyo	`2.67ms` from Tokyo, JP
157.82.142.31	AS2501 The University of Tokyo	`1.98ms` from Tokyo, JP
157.82.234.2	AS2501 The University of Tokyo	`2.51ms` from Tokyo, JP
157.82.166.38	AS2501 The University of Tokyo	`2.70ms` from Tokyo, JP
157.82.151.14	AS2501 The University of Tokyo	`2.77ms` from Tokyo, JP
157.82.223.1	AS2501 The University of Tokyo	`3.22ms` from Tokyo, JP
157.82.42.174	AS2501 The University of Tokyo	`2.82ms` from Tokyo, JP
157.82.121.131	AS2501 The University of Tokyo	`3.50ms` from Tokyo, JP
157.82.233.5	AS2501 The University of Tokyo	`2.36ms` from Tokyo, JP
157.82.93.36	AS2501 The University of Tokyo	`2.90ms` from Tokyo, JP
157.82.66.61	AS2501 The University of Tokyo	`2.77ms` from Tokyo, JP
157.82.8.95	AS2501 The University of Tokyo	`2.05ms` from Tokyo, JP
157.82.247.31	AS2501 The University of Tokyo	`2.57ms` from Tokyo, JP
157.82.228.135	AS2501 The University of Tokyo	`17.62ms` 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
86.94.140.80	AS1136 KPN B.V.	`1.68ms` from Amsterdam, NL
193.92.253.112	AS1241 Forthnet	`1.76ms` from Athens, GR
98.62.142.128	AS7922 Comcast Cable Communications, LLC	`4.19ms` from Atlanta, US
24.122.227.192	AS11290 Cogeco Connexion inc	`6.65ms` from Beauharnois, CA
198.164.39.224	AS611 NB-PEI Educational Computer Network	`14.32ms` from Beauharnois, CA
34.59.97.80	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
71.90.180.224	AS20115 Charter Communications LLC	`17.96ms` from Dallas, US
71.135.223.96	AS7018 AT&T Enterprises, LLC	`3.34ms` from Los Angeles, US
98.14.47.176	AS12271 Charter Communications Inc	`4.48ms` from New York City, US
115.195.146.144	AS4134 CHINANET-BACKBONE	`5.71ms` from Ningbo, CN
88.190.234.128	AS12322 Free SAS	`3.54ms` from Paris, FR
192.225.61.192	AS32506 Experior Networks LLC	`0.63ms` from Phoenix, US
112.250.57.96	AS4837 CHINA UNICOM China169 Backbone	`5.28ms` from Qingdao, CN
118.47.59.96	AS4766 Korea Telecom	`6.53ms` from Seoul, KR
139.196.112.128	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.49ms` from Shanghai, CN
115.48.44.48	AS4837 CHINA UNICOM China169 Backbone	`7.08ms` from Zhengzhou, CN
154.176.239.96	AS8452 TE-AS	`4.03ms` from Cairo, EG
47.109.55.224	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.45ms` from Chengdu, CN
96.166.137.96	AS393232 Comcast Cable Communications, LLC	`0.05ms` from Chicago, US
50.127.246.32	AS5650 Frontier Communications of America, Inc.	`6.78ms` from Chicago, US
77.187.23.128	AS6805 Telefonica Germany GmbH & Co.OHG	`2.55ms` from Frankfurt am Main, DE
27.36.206.16	AS17816 China Unicom IP network China169 Guangdong province	`4.84ms` from Guangzhou, CN
191.100.175.224	AS27668 ETAPA EP	`6.02ms` from Guayaquil, EC
218.234.188.240	AS9318 SK Broadband Co Ltd	`6.65ms` from Incheon, KR
93.71.166.240	AS30722 Vodafone Italia S.p.A.	`8.83ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f5 157.82.240.1

traceroute to 157.82.240.1 (157.82.240.1): 64 hops max, 52 byte packets

5 [] 210.173.176.94 1.003 ms

6 [AS2907] 150.99.11.32 1.153 ms

7 [AS2907] 150.99.190.98 1.326 ms

8 [AS2501] 133.11.206.154 1.434 ms

9 [AS2501] 133.11.206.149 1.415 ms

10 [AS2501] 133.11.130.114 6.412 ms

11 [AS2501] 133.11.130.217 7.459 ms

12 [AS2501] 133.11.130.169 1.848 ms

13 [AS2501] 157.82.240.1 10.371 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 19th 2026

What are IP address ranges?

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