158.203.0.0/16

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

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Summary

Country	Japan
Domain	nic.ad.jp
ASN	AS2907
Registry	APNIC
ID	JPNIC-NET-JP-ERX

WHOIS Details

inetnum:        158.198.0.0 - 158.215.255.255
netname:        JPNIC-NET-JP-ERX
descr:          Japan Network Information Center
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
abuse-c:        AJ382-AP
status:         ALLOCATED PORTABLE
remarks:        JPNIC Allocation Block
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
mnt-by:         APNIC-HM
mnt-lower:      MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
last-modified:  2020-07-23T04:25:29Z
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:  2025-09-04T01:00:00Z
source:         APNIC

role:           ABUSE JPNICJP
country:        ZZ
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, japan
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         hostmaster@nic.ad.jp
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
nic-hdl:        AJ382-AP
remarks:        Generated from irt object IRT-JPNIC-JP
remarks:        hostmaster@nic.ad.jp was validated on 2024-11-27
abuse-mailbox:  hostmaster@nic.ad.jp
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-23T00:15:35Z
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:         hostmaster@nic.ad.jp
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 158.0.0.0/8

Range	ASN	Company	Num of IPs
158.252.0.0/15	AS16509	Amazon Data Services UAE	131,072
158.8.0.0/16	AS5180	DoD Network Information Center	65,536
158.111.0.0/16	AS13611	U.S. Center For Disease Control and Prevention	65,536
158.83.0.0/16	AS398655	Pennsylvania Western University	65,536
158.18.0.0/16	AS5180	DoD Network Information Center	65,536
158.232.0.0/16	AS28810	World Health Organization	65,536
158.148.0.0/16	AS16232	Telecom Italia S.p.A.	65,536
158.194.0.0/16	AS2852	Univerzita Palackeho	65,536
158.145.0.0/16	AS3724	State of Alaska	65,536
158.93.0.0/16	AS398060	Augusta University	65,536
158.112.0.0/16	AS49278	IKT-KAPASITETER	65,536
158.74.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.193.0.0/16	AS2607	University of Zilina	65,536
158.196.0.0/16	AS2852	VSB - Technical University	65,536
158.170.0.0/16	AS27897	SEGIC USACH LTDA	65,536
158.72.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.57.0.0/16	AS1932	Consolidated Edison Co. of New York, Inc.	65,536
158.114.0.0/16	AS1906	Northrop Grumman Corp.	65,536
158.154.0.0/16	AS297	National Aeronautics and Space Administration	65,536
158.70.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.251.0.0/16	AS16742	Universidad Catolica de Valparaiso	65,536
158.197.0.0/16	AS2607	P.J.Safarik University in Kosice	65,536
158.217.0.0/16	AS18276	Japan Network Information Center	65,536
158.135.0.0/16	AS33187	Sam Houston State University	65,536
158.74.0.0/16	AS19050	U.S. Dept. of Health and Human Services	65,536
158.141.0.0/16	AS16509	Amazon Technologies Inc.	65,536
158.73.0.0/16	AS19050	U.S. Dept. of Health and Human Services	65,536
158.138.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.200.0.0/16	AS2522	Japan Network Information Center	65,536
158.64.0.0/16	AS2602	Reseau Teleinformatique de l'Education Nationale	65,536
158.104.0.0/16	AS29984	Willamette University	65,536
158.40.0.0/16	AS141468	Department of the Prime Minister and Cabinet	65,536
158.110.0.0/16	AS137	Universita' degli Studi di Udine	65,536
158.151.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.109.0.0/16	AS13041	Xarxa Informatica de la	65,536
158.52.0.0/16	AS11757	Whirlpool Corporation	65,536
158.132.0.0/16	AS4616	The Hong Kong Polytechnic University	65,536
158.221.0.0/16	AS16509	Amazon Technologies Inc.	65,536
158.248.0.0/16	AS29695	Altibox AS	65,536
158.227.0.0/16	AS15488	Universidad del Pais Vasco / Euskal Herriko Unibertsitatea	65,536
158.121.0.0/16	AS1968	University of Massachusetts at Boston	65,536
158.56.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.96.0.0/16	AS1226	California Department of Technology	65,536
158.16.0.0/16	AS1540	Headquarters, USAISC	65,536
158.195.0.0/16	AS2607	Comenius University Bratislava	65,536
158.160.0.0/16	AS200350	Yandex.Cloud LLC	65,536
158.100.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.161.0.0/16	AS133875	Brunei Shell Petroleum Company Sendirian Berhad	65,536
158.69.0.0/16	AS16276	OVH Hosting, Inc.	65,536
158.130.0.0/16	AS55	University of Pennsylvania	65,536

Hosted domains

There are 7 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
158.203.31.145	bosai-contest.jp	6
158.203.31.242	info-bosai.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

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

IP Address	ASN	Details
158.203.239.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.48ms` from Tokyo, JP
158.203.12.250	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.54ms` from Tokyo, JP
158.203.1.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.47ms` from Tokyo, JP
158.203.2.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.50ms` from Tokyo, JP
158.203.31.176	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.56ms` from Tokyo, JP
158.203.29.4	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.58ms` 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
34.86.166.16	AS396982 Google LLC	`0.14ms` from Ashburn, US
190.24.39.64	AS19429 ETB - Colombia	`0.94ms` from Bogota, CO
107.12.177.96	AS11426 Charter Communications Inc	`14.67ms` from Charlotte, US
43.255.164.0	AS135817 ESTO MEDIA PRIVATE LIMITED	`7.46ms` from Delhi, IN
5.2.65.160	AS60404 The Infrastructure Group B.V.	`0.21ms` from Dronten, NL
37.136.15.224	AS16086 DNA Oyj	`6.01ms` from Helsinki, FI
39.104.221.208	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.14ms` from Hohhot, CN
67.11.115.144	AS11427 Charter Communications Inc	`8.25ms` from Houston, US
82.28.223.144	AS5089 Virgin Media Limited	`5.58ms` from London, GB
84.122.126.160	AS6739 VODAFONE ONO, S.A.	`13.90ms` from Madrid, ES
79.38.170.0	AS3269 Telecom Italia S.p.A.	`2.57ms` from Milan, IT
212.67.12.176	AS198610 Beget LLC	`9.64ms` from Moscow, RU
31.130.41.80	AS49583 Kom lan Ltd	`0.98ms` from Moscow, RU
67.205.139.16	AS14061 DigitalOcean, LLC	`0.20ms` from New York City, US
160.86.169.32	AS2527 Sony Network Communications Inc.	`1.67ms` from Osaka, JP
98.167.165.32	AS22773 Cox Communications Inc.	`4.21ms` from Phoenix, US
44.10.4.64	AS209864 Naive Network	`0.29ms` from Piscataway, US
83.179.172.48	AS1257 Tele2 Sverige AB	`0.64ms` from Stockholm, SE
182.123.194.48	AS4837 CHINA UNICOM China169 Backbone	`7.35ms` from Zhengzhou, CN
123.57.159.128	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.58ms` from Beijing, CN
200.103.2.32	AS8167 V tal	`4.99ms` from Brasilia, BR
95.13.103.96	AS9121 Turk Telekomunikasyon Anonim Sirketi	`13.20ms` from Bursa, TR
170.248.173.16	AS18546 Accenture LLP	`6.11ms` from Houston, US
223.239.123.192	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`15.50ms` from Kolkata, IN
92.24.223.128	AS13285 TalkTalk Communications Limited	`2.55ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -m21 158.203.35.188

traceroute to 158.203.35.188 (158.203.35.188): 21 hops max, 52 byte packets

1 [AS51540] 46.31.144.193 1.06 ms

2 *

3 *

4 *

5 *

6 *

7 *

8 *

9 [AS9121] 81.212.216.50 1.608 ms

10 *

11 [AS9121] 212.156.101.230 35.352 ms

12 *

13 [AS2497] 58.138.83.174 224.951 ms

14 *

15 *

16 *

17 *

18 [AS2907] 150.99.189.130 313.765 ms

19 *

20 *

21 *

Measurement taken from

IPinfo ProbeNet in Istanbul, TR

On December 6th 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.

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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