157.102.0.0/16

AS2907 · Research Organization of Information and Systems, National Institute of Informatics

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Summary

Country	Japan
Domain	teikyo-u.ac.jp
ASN	AS2907
Registry	APNIC
ID	TUC-NET

WHOIS Details

inetnum:        157.102.0.0 - 157.102.255.255
netname:        TUC-NET
descr:          Teikyo University
country:        JP
admin-c:        SS4467-AP
tech-c:         TM1242-AP
tech-c:         TS1288-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
last-modified:  2025-11-28T07:28:02Z
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

person:         Shigeru Sasaki
nic-hdl:        SS4467-AP
e-mail:         [email protected]
address:        1-1 Toyosatodai, Utsunomiya-shi, TOCHIGI
phone:          +81-286277308
fax-no:         +81-286277308
country:        JP
mnt-by:         MAINT-JPNIC
last-modified:  2025-11-28T07:18:02Z
source:         APNIC

person:         Takuo Mori
nic-hdl:        TM1242-AP
e-mail:         [email protected]
address:        1-1,Toyosatodai,Utsunomiya-shi.TOCHIGI 320-8551 JAPAN
phone:          +81-28-627-7228
fax-no:         +81-28-627-7183
country:        JP
mnt-by:         MAINT-JPNIC
last-modified:  2025-11-28T07:18:02Z
source:         APNIC

person:         Takashi Suzuki
nic-hdl:        TS1288-AP
e-mail:         [email protected]
address:        4-11-14, Kamitomatsuri Utsunomiya, Tochigi 320-0058, JAPAN
phone:          +81-28-624-6083
fax-no:         +81-28-601-8233
country:        JP
mnt-by:         MAINT-JPNIC
last-modified:  2025-11-28T07:18:03Z
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
157.129.0.0/16	AS41701	Board of Customs	65,536
157.206.0.0/16	AS36291	Sanofi	65,536
157.235.0.0/16	AS33442	Zebra Technologies Corporation	65,536
157.88.0.0/16	AS44593	Universidad de Valladolid	65,536
157.98.0.0/16	AS3527	National Institute of Environmental Health Sciences	65,536
157.149.0.0/16	AS3464	Alabama State Department of Education	65,536
157.201.0.0/16	AS33281	BRIGHAM YOUNG UNIVERSITY - IDAHO	65,536
157.63.0.0/16	AS2907	Teikyo University of Science	65,536
157.92.0.0/16	AS3449	Universidad Nacional de Buenos Aires	65,536
157.99.0.0/16	AS29110	Institut Pasteur	65,536
157.80.0.0/16	AS2907	Ibaraki University	65,536
157.159.0.0/16	AS2094	SCES COMMUNS IMT BUSINESS SCHOOL TELECOM SUD PARIS	65,536
157.152.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.6.0.0/16	AS2907	Fukui Prefectural University	65,536
157.150.0.0/16	AS2647	United Nations	65,536
157.105.0.0/16	AS2907	National University Corporation Tokyo Gakugei University	65,536
157.19.0.0/16	AS2907	National University Corporation Muroran Institute of Technology	65,536
157.114.0.0/16	AS2907	Institue National Colleges of Technology, Japan	65,536
157.231.0.0/16	AS31655	Gamma Telecom Limited	65,536
157.249.0.0/16	AS224	Meteorologisk institutt, Oslo	65,536
157.188.0.0/16	AS22252	The City of New York	65,536
157.159.0.0/16	AS2263	SCES COMMUNS IMT BUSINESS SCHOOL TELECOM SUD PARIS	65,536
157.125.0.0/16	AS31655	Gamma Telecom Limited	65,536
157.82.0.0/16	AS2501	University of Tokyo	65,536
157.94.0.0/16	AS16086	Elenia Oy	65,536
157.200.0.0/16	AS16086	Finnair Oy	65,536
157.76.0.0/16	AS2907	Ube Frontier University	65,536
157.135.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.241.0.0/16	AS16509	Amazon Data Services Bahrain	65,536
157.210.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.175.0.0/16	AS16509	Amazon Data Services Bahrain	65,536
157.243.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.142.0.0/16	AS16922	University of Oklahoma HSC	65,536
157.193.0.0/16	AS2611	Research network University of Ghent	65,536
157.174.0.0/16	AS26298	Florida Blue	65,536
157.181.0.0/16	AS2012	Eotvos Lorand University of Sciences	65,536
157.233.0.0/16	AS20001	Val Verde Unified School District	65,536
157.1.0.0/16	AS2907	Research Organization of Information and Systems, National Institute of Informatics	65,536
157.111.0.0/16	AS2907	National Institutes for Quantum and Radiological Science and Technology	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
157.16.0.0/16	AS2907	University Public Corporation Osaka	65,536
157.13.0.0/16	AS2907	Kindai Univercity,	65,536
157.178.0.0/16	AS15337	William Rainey Harper College	65,536
157.123.0.0/16	AS16509	Amazon.com, Inc.	65,536
157.136.0.0/16	AS2200	Centre National de la Recherche Scientifique	65,536
157.242.0.0/16	AS25789	Loyola Marymount University	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
157.102.11.92	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.59ms` from Tokyo, JP
157.102.3.3	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.11ms` from Tokyo, JP
157.102.2.98	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.01ms` from Tokyo, JP
157.102.37.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.93ms` from Tokyo, JP
157.102.34.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.95ms` from Tokyo, JP
157.102.45.103	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.13ms` from Tokyo, JP
157.102.1.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.92ms` from Tokyo, JP
157.102.7.165	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.01ms` 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
23.200.173.144	AS16625 Akamai Technologies, Inc.	`0.18ms` from Ashburn, US
12.154.72.32	AS7018 AT&T Enterprises, LLC	`9.98ms` from Ashburn, US
191.104.53.32	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`5.72ms` from Bogotá, CO
70.72.93.80	AS6327 Shaw Communications	`1.69ms` from Calgary, CA
52.148.11.224	AS8075 Microsoft Corporation	`3.27ms` from Denver, US
34.150.7.64	AS396982 Google LLC	`0.11ms` from Hong Kong, HK
195.42.148.80	AS197161 Ciril Group SAS	`0.84ms` from Lyon, FR
115.46.90.64	AS4837 CHINA UNICOM China169 Backbone	`7.84ms` from Nanning, CN
87.17.139.112	AS3269 Telecom Italia S.p.A.	`4.73ms` from Rome, IT
75.197.61.192	AS6167 Verizon Business	`13.16ms` from Secaucus, US
103.173.104.0	AS146969 SB Technology Corp.	`0.90ms` from Tokyo, JP
180.222.77.16	AS9597 KDDI Web Communications Inc.	`0.60ms` from Tokyo, JP
46.46.43.0	AS44724 Octopusnet LTD	`1.18ms` from Vladivostok, RU
97.89.97.112	AS20115 Charter Communications LLC	`9.82ms` from Atlanta, US
89.195.140.16	AS8011 MongoDB, Inc.	`0.12ms` from Boardman, US
66.181.114.144	AS11847 GoNetSpeed	`12.86ms` from Boston, US
99.159.11.176	AS7018 AT&T Enterprises, LLC	`10.56ms` from Dallas, US
187.84.90.144	AS52850 Oxente.net Soluções Tecnológicas Eireli	`9.85ms` from Fortaleza, BR
14.183.208.240	AS45899 VNPT Corp	`2.95ms` from Ho Chi Minh City, VN
116.49.153.112	AS4760 HKT Limited	`1.00ms` from Hong Kong, HK
23.220.53.144	AS16625 Akamai Technologies, Inc.	`0.25ms` from Kuala Lumpur, MY
162.10.247.16	AS55256 Netskope Inc	`0.12ms` from Lagos, NG
69.69.108.64	AS17402 CenturyLink Communications, LLC	`2.29ms` from Minneapolis, US
62.76.154.48	AS60818 Scientific-production Association Telemetry LLC	`5.63ms` from Moscow, RU
95.247.213.160	AS3269 Telecom Italia S.p.A.	`2.51ms` from Rome, IT

Traceroute

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

traceroute -a -n -q1 -f2 -m11 157.102.201.31

traceroute to 157.102.201.31 (157.102.201.31): 11 hops max, 52 byte packets

2 [AS3257] 74.199.182.145 1.652 ms

3 [AS3257] 63.141.200.114 1.272 ms

4 *

5 [AS2497] 58.138.112.105 103.87 ms

6 [AS2497] 202.232.6.18 100.947 ms

7 [AS2907] 150.99.8.158 106.124 ms

8 [AS2907] 150.99.186.206 106.655 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in San Jose, US

On December 14th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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