133.81.0.0/16

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:        133.0.0.0 - 133.255.255.255
netname:        JPNIC-NET-JP-ERX
descr:          Japan Network Information Center
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
abuse-c:        AJ382-AP
remarks:        133/8 block is an ERX range which transfered from
remarks:        ARIN to APNIC on 2009-10-30
remarks:        The original allocation date was 1997-03-01
remarks:        Please search  whois.nic.ad.jp for more information
remarks:        about this range
remarks:        % whois -h whois.nic.ad.jp ***.***.***.***/e
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
last-modified:  2022-11-01T04:33:10Z
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:           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:         [email protected]
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
nic-hdl:        AJ382-AP
remarks:        Generated from irt object IRT-JPNIC-JP
remarks:        [email protected] was validated on 2024-11-27
abuse-mailbox:  [email protected]
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:         [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 133.0.0.0/8

Range	ASN	Company	Num of IPs
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536
133.125.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.123.0.0/16	AS7522	STNet, Incorporated	65,536
133.114.0.0/16	AS2527	Sony Network Communications Inc.	65,536
133.236.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.142.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.175.0.0/16	AS2519	ARTERIA Networks Corporation	65,536
133.242.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.163.0.0/16	AS2510	FUJITSU LIMITED	65,536
133.167.0.0/16	AS9371	SAKURA Internet Inc.	65,536
133.112.0.0/16	AS2522	Japan Network Information Center	65,536
133.218.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.159.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.137.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.110.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.18.0.0/16	AS24282	KAGOYA JAPAN Inc.	65,536
133.155.128.0/17	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	32,768
133.130.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
133.155.0.0/17	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	32,768
133.186.128.0/17	AS45974	NHN Cloud Japan Corporation	32,768
133.232.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
133.165.192.0/18	AS17534	NSK Co.,Ltd.	16,384
133.32.0.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.247.0.0/18	AS131918	SHONAN CABLE NETWORK	16,384
133.165.128.0/18	AS2527	Sony Network Communications Inc.	16,384
133.149.192.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.186.64.0/18	AS131915	Hamamatsu Cable Television .Inc	16,384
133.238.64.0/18	AS131958	TAMA CABLE NETWORK CO., LTD.	16,384
133.149.128.0/18	AS4677	Marubeni OKI Network Solutions Inc.	16,384
133.232.64.0/19	AS2514	INTERLINK Co.,LTD	8,192
133.226.96.0/19	AS9997	CTY Co.,Ltd.	8,192
133.32.224.0/19	AS2519	ARTERIA Networks Corporation	8,192
133.238.32.0/19	AS2497	IIJ Internet	8,192
133.226.64.0/19	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	8,192
133.232.0.0/19	AS7682	DMG MORI Digital Co., LTD.	8,192
133.186.0.0/20	AS10010	TOKAI Communications Corporation	4,096
133.32.80.0/20	AS131918	SHONAN CABLE NETWORK	4,096
133.247.144.0/20	AS131949	General Incorporated Foundation Aso Telework Center	4,096
133.232.96.0/20	AS2514	INTERLINK Co.,LTD	4,096
133.226.0.0/20	AS131934	ICC Corporation	4,096
133.238.16.0/20	AS2497	IIJ Internet	4,096
133.32.128.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.226.144.0/20	AS24279	SENDAI CATV CO.,LTD.	4,096
133.117.64.0/20	AS58791	GMO Internet Group, Inc.	4,096
133.226.16.0/20	AS23624	Chukai Television Co,.Ltd.	4,096
133.226.160.0/20	AS17958	Kasaoka Cable Vision LIMITED	4,096
133.117.80.0/20	AS18094	Tokyo Cable Network.,Inc.	4,096
133.88.48.0/20	AS23778	IMIZU CABLE NETWORK CO.,LTD.	4,096
133.88.32.0/20	AS18281	Chitahanto Cable Network Corp.	4,096
133.232.112.0/20	AS2514	INTERLINK Co.,LTD	4,096

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
133.81.74.97	painsurancebrokers.in	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

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

IP Address	ASN	Details
133.81.126.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.57ms` from Osaka, JP
133.81.135.98	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.82ms` from Osaka, JP
133.81.152.66	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.78ms` from Osaka, JP
133.81.146.36	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.79ms` from Osaka, JP
133.81.136.28	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.82ms` from Osaka, JP
133.81.161.37	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.74ms` from Osaka, JP
133.81.157.250	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.60ms` from Osaka, JP
133.81.166.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`12.85ms` from Osaka, 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
20.8.232.160	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
52.27.13.128	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
50.37.48.240	AS5650 Frontier Communications of America, Inc.	`12.22ms` from Chicago, US
174.182.19.160	AS7922 Comcast Cable Communications, LLC	`12.54ms` from Chicago, US
37.156.107.160	AS206206 Kurdistan Net Company for Computer and Internet Ltd.	`1.82ms` from Erbil, IQ
45.61.178.176	AS53667 FranTech Solutions	`0.21ms` from Las Vegas, US
6.15.85.64	AS668 United States Department of Defense (DoD)	`1.77ms` from Los Angeles, US
47.63.157.48	AS12430 VODAFONE ESPANA S.A.U.	`1.82ms` from Madrid, ES
73.121.240.96	AS7922 Comcast Cable Communications, LLC	`15.10ms` from Murfreesboro, US
187.106.124.208	AS28573 Claro NXT Telecomunicacoes Ltda	`8.66ms` from Sao Paulo, BR
220.83.121.176	AS4766 Korea Telecom	`4.51ms` from Seoul, KR
20.18.55.112	AS8075 Microsoft Corporation	`0.61ms` from Tokyo, JP
178.46.152.144	AS12389 PJSC Rostelecom	`5.39ms` from Yekaterinburg, RU
91.84.103.112	AS216071 SERVERS TECH FZCO	`0.56ms` from Amsterdam, NL
73.44.186.192	AS7922 Comcast Cable Communications, LLC	`7.20ms` from Chicago, US
46.95.196.128	AS3320 Deutsche Telekom AG	`7.49ms` from Frankfurt am Main, DE
34.159.88.64	AS396982 Google LLC	`0.10ms` from Frankfurt am Main, DE
78.51.167.224	AS6805 Telefonica Germany GmbH & Co.OHG	`2.43ms` from Frankfurt am Main, DE
87.28.60.0	AS3269 Telecom Italia S.p.A.	`0.40ms` from Milan, IT
89.86.155.160	AS5410 Bouygues Telecom SA	`7.30ms` from Paris, FR
76.116.146.192	AS7922 Comcast Cable Communications, LLC	`6.60ms` from Piscataway, US
98.89.32.96	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
95.251.51.48	AS3269 Telecom Italia S.p.A.	`2.67ms` from Rome, IT
125.178.81.16	AS17858 LG POWERCOMM	`1.74ms` from Seoul, KR
122.252.206.0	AS38133 CMB	`3.77ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f5 -m11 133.81.198.28

traceroute to 133.81.198.28 (133.81.198.28): 11 hops max, 52 byte packets

5 [] 210.173.184.25 0.8 ms

6 [AS2907] 150.99.20.148 12.666 ms

7 [AS2907] 150.99.189.118 13.013 ms

8 [AS2907] 133.81.126.254 13.835 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On December 20th 2025

What are IP address ranges?

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