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
158.132.0.0/16	AS4616	The Hong Kong Polytechnic University	65,536
158.161.0.0/16	AS133875	Brunei Shell Petroleum Company Sendirian Berhad	65,536
158.103.0.0/16	AS33170	Morgan State University	65,536
158.89.0.0/16	AS38327	Woodside Energy Ltd	65,536
158.93.0.0/16	AS398060	Augusta University	65,536
158.110.0.0/16	AS137	Universita' degli Studi di Udine	65,536
158.67.0.0/16	AS21286	European Data Center	65,536
158.74.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.15.0.0/16	AS300	DoD Network Information Center	65,536
158.232.0.0/16	AS28810	World Health Organization	65,536
158.70.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.197.0.0/16	AS2607	P.J.Safarik University in Kosice	65,536
158.150.0.0/16	AS2119	Kristiansand Kommune	65,536
158.72.0.0/16	AS26810	U.S. Dept. of Health and Human Services	65,536
158.102.0.0/16	AS2594	Consorzio per il Sistema Informativo	65,536
158.74.0.0/16	AS19050	U.S. Dept. of Health and Human Services	65,536
158.151.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.121.0.0/16	AS1968	University of Massachusetts at Boston	65,536
158.63.0.0/16	AS22238	DoD Network Information Center	65,536
158.160.0.0/16	AS200350	Yandex.Cloud LLC	65,536
158.65.0.0/16	AS29917	University System of New Hampshire	65,536
158.193.0.0/16	AS2607	University of Zilina	65,536
158.196.0.0/16	AS2852	VSB - Technical University	65,536
158.147.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
158.138.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.195.0.0/16	AS2607	Comenius University Bratislava	65,536
158.100.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.149.0.0/16	AS2119	Oppland Fylkeskommune	65,536
158.217.0.0/16	AS18276	Japan Network Information Center	65,536
158.194.0.0/16	AS2852	Univerzita Palackeho	65,536
158.111.0.0/16	AS13611	U.S. Center For Disease Control and Prevention	65,536
158.221.0.0/16	AS16509	Amazon Technologies Inc.	65,536
158.227.0.0/16	AS15488	Universidad del Pais Vasco / Euskal Herriko Unibertsitatea	65,536
158.52.0.0/16	AS11757	Whirlpool Corporation	65,536
158.109.0.0/16	AS13041	Xarxa Informatica de la	65,536
158.141.0.0/16	AS16509	Amazon Technologies Inc.	65,536
158.40.0.0/16	AS141468	Department of the Prime Minister and Cabinet	65,536
158.135.0.0/16	AS33187	Sam Houston State University	65,536
158.16.0.0/16	AS1540	Headquarters, USAISC	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
158.96.0.0/16	AS1226	California Department of Technology	65,536
158.56.0.0/16	AS16509	Amazon.com, Inc.	65,536
158.251.0.0/16	AS16742	Universidad Catolica de Valparaiso	65,536
158.136.0.0/16	AS27405	University System of New Hampshire	65,536
158.73.0.0/16	AS19050	U.S. Dept. of Health and Human Services	65,536
158.69.0.0/16	AS16276	OVH Hosting, Inc.	65,536
158.148.0.0/16	AS16232	Telecom Italia S.p.A.	65,536
158.61.0.0/16	AS46196	County of Riverside	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	nankai-bosai.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

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Pingable IPs

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

IP Address	ASN	Details
158.203.29.100	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.62ms` from Tokyo, JP
158.203.2.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.58ms` from Tokyo, JP
158.203.31.81	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.60ms` from Tokyo, JP
158.203.239.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.46ms` from Tokyo, JP
158.203.12.250	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.49ms` from Tokyo, JP
158.203.1.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.45ms` 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
81.183.63.240	AS5483 Magyar Telekom Plc.	`6.41ms` from Budapest, HU
186.57.63.96	AS22927 Telefonica de Argentina	`1.90ms` from Buenos Aires, AR
68.226.203.160	AS22773 Cox Communications Inc.	`14.12ms` from Dallas, US
189.70.49.64	AS7738 V tal	`12.43ms` from Fortaleza, BR
115.199.48.160	AS4134 CHINANET-BACKBONE	`5.60ms` from Hangzhou, CN
113.190.182.112	AS45899 VNPT Corp	`1.05ms` from Hanoi, VN
93.123.46.160	AS48014 AlbHost SH.P.K.	`0.08ms` from Kerkrade, NL
82.223.186.96	AS8560 IONOS SE	`0.33ms` from Logrono, ES
89.29.239.0	AS41368 Spotting Brands Technologies S.L.	`7.42ms` from Madrid, ES
15.157.103.192	AS16509 Amazon.com, Inc.	`0.15ms` from Montreal, CA
88.126.44.144	AS12322 Free SAS	`15.85ms` from Paris, FR
51.57.79.160	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US
202.194.9.32	AS4538 China Education and Research Network Center	`5.82ms` from Qingdao, CN
81.204.39.128	AS1136 KPN B.V.	`2.43ms` from Amsterdam, NL
162.239.241.160	AS7018 AT&T Enterprises, LLC	`15.24ms` from Atlanta, US
34.219.63.96	AS16509 Amazon.com, Inc.	`0.11ms` from Boardman, US
74.128.200.160	AS10796 Charter Communications Inc	`8.91ms` from Columbus, US
193.180.214.0	AS44803 Webdock.io ApS	`0.17ms` from Copenhagen, DK
97.121.133.96	AS209 CenturyLink Communications, LLC	`2.74ms` from Denver, US
77.86.243.16	AS29422 Telia Cygate Oy	`0.81ms` from Helsinki, FI
88.12.87.240	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.37ms` from Madrid, ES
120.210.21.96	AS9808 China Mobile Communications Group Co., Ltd.	`9.95ms` from Nanjing, CN
14.11.47.0	AS2516 KDDI CORPORATION	`6.82ms` from Osaka, JP
133.204.136.64	AS2518 BIGLOBE Inc.	`16.12ms` from Osaka, JP
34.227.7.144	AS14618 Amazon.com, Inc.	`0.47ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f4 -m13 158.203.109.202

traceroute to 158.203.109.202 (158.203.109.202): 13 hops max, 52 byte packets

4 [AS6939] 184.105.64.4 8.906 ms

5 *

6 *

7 *

8 *

9 [AS5580] 203.190.230.207 217.504 ms

10 [AS2907] 150.99.8.44 219.27 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Grantham, GB

On November 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.

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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