147.157.0.0/17

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

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Summary

Country	Japan
Domain	tsukuba-tech.ac.jp
ASN	AS2907
Registry	APNIC
ID	TCNET

WHOIS Details

inetnum:        147.157.0.0 - 147.157.255.255
netname:        TCNET
descr:          Tsukuba College of Technology
country:        JP
admin-c:        TCoT1-AP
tech-c:         TCoT1-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
last-modified:  2015-12-01T22:24:38Z
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:         hostmaster@nic.ad.jp
abuse-mailbox:  hostmaster@nic.ad.jp
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
remarks:        hostmaster@nic.ad.jp was validated on 2024-11-27
mnt-by:         MAINT-JPNIC
last-modified:  2025-04-10T11:04:13Z
source:         APNIC

person:         Tsukuba College of Technology
address:        4-12-7 Kasuga Tsukuba, 3050821
country:        JP
phone:          +81-298-52-2890
e-mail:         masaji@k.tsukuba-tech.ac.jp
nic-hdl:        TCoT1-AP
remarks:        ----------
remarks:        imported from ARIN object:
remarks:        
remarks:        poc-handle:  ZT23-ARIN
remarks:        is-role:     Y
remarks:        last-name:   Tsukuba College of Technology
remarks:        street:      4-12-7 Kasuga Tsukuba, 3050821
remarks:        country:     JP
remarks:        mailbox:     masaji@k.tsukuba-tech.ac.jp
remarks:        bus-phone:   +81-298-52-2890
remarks:        reg-date:    2000-04-13
remarks:        changed:     hostmaster@arin.poc 20000413
remarks:        source:      ARIN
remarks:        
remarks:        ----------
notify:         masaji@k.tsukuba-tech.ac.jp
mnt-by:         MNT-ERX-TSUKUBACOLTECH-NON-JP
last-modified:  2008-09-04T07:29:34Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 147.157.0.0/17

Range	ASN	Company	Num of IPs
147.157.85.0/24	AS2907	Tsukuba College of Technology	256

Nearby Ranges

BGP prefixes that overlap with 147.157.0.0/16

Range	ASN	Company	Num of IPs
147.157.128.0/17	AS2907	Tsukuba College of Technology	32,768
147.157.85.0/24	AS2907	Tsukuba College of Technology	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
147.157.1.247	298tech.jp	1
147.157.1.101	ntut-braille-net.org	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

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

IP Address	ASN	Details
147.157.1.101	AS2907 Research Organization of Information and Systems, National Institute of Informatics	2.49ms from Tokyo, JP
147.157.68.22	AS2907 Research Organization of Information and Systems, National Institute of Informatics	2.85ms from Tokyo, JP
147.157.2.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	2.52ms from Tokyo, JP
147.157.8.10	AS2907 Research Organization of Information and Systems, National Institute of Informatics	2.49ms 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
62.1.222.161	AS1241 Forthnet	1.90ms from Athens, GR
81.92.62.241	AS25472 Nova Telecommunications & Media Single Member S.A	1.72ms from Athens, GR
216.237.231.97	AS22709 North State Telephone, LLC	7.90ms from Atlanta, US
123.124.23.1	AS4808 China Unicom Beijing Province Network	5.49ms from Beijing, CN
176.79.10.1	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	0.68ms from Braga, PT
97.78.110.1	AS33363 Charter Communications, Inc	9.29ms from Chicago, US
12.208.202.129	AS7018 AT&T Enterprises, LLC	6.83ms from Chicago, US
54.46.21.225	AS16509 Amazon.com, Inc.	0.11ms from Hong Kong, HK
117.197.176.1	AS9829 National Internet Backbone	0.90ms from Kolkata, IN
46.65.188.17	AS5607 Sky UK Limited	7.94ms from London, GB
98.203.74.1	AS7922 Comcast Cable Communications, LLC	1.54ms from Miami, US
78.107.18.113	AS8402 PJSC "Vimpelcom"	1.32ms from Moscow, RU
65.194.183.49	AS701 Verizon Business	0.79ms from Philadelphia, US
205.196.217.33	AS26347 New Dream Network, LLC	0.26ms from Portland, US
193.179.141.193	AS13036 T-Mobile Czech Republic a.s.	5.85ms from Prague, CZ
59.25.61.161	AS4766 Korea Telecom	5.01ms from Seoul, KR
49.142.0.225	AS7562 HCN Dongjak	0.56ms from Seoul, KR
211.44.210.1	AS9318 SK Broadband Co Ltd	0.88ms from Seoul, KR
1.252.147.1	AS9318 SK Broadband Co Ltd	7.00ms from Seoul, KR
223.12.95.1	AS4134 CHINANET-BACKBONE	0.97ms from Taiyuan, CN
80.178.106.97	AS12400 Partner Communications Ltd.	1.96ms from Tel Aviv, IL
61.21.248.1	AS9824 JCOM Co., Ltd.	2.81ms from Tokyo, JP
24.138.128.1	AS11260 EastLink	6.11ms from Toronto, CA
66.199.7.209	AS3549 Level 3 Parent, LLC	0.44ms from Atlanta, US
69.254.218.65	AS7922 Comcast Cable Communications, LLC	9.30ms from Atlanta, US

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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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