133.23.0.0/16

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:         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 133.0.0.0/8

Range	ASN	Company	Num of IPs
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536
133.114.0.0/16	AS2527	Sony Network Communications Inc.	65,536
133.123.0.0/16	AS7522	STNet, Incorporated	65,536
133.125.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.137.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.175.0.0/16	AS2519	ARTERIA Networks Corporation	65,536
133.159.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.112.0.0/16	AS2522	Japan Network Information Center	65,536
133.110.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.218.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.167.0.0/16	AS9371	SAKURA Internet Inc.	65,536
133.142.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.18.0.0/16	AS24282	KAGOYA JAPAN Inc.	65,536
133.163.0.0/16	AS2510	FUJITSU LIMITED	65,536
133.236.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.242.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.155.0.0/17	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	32,768
133.155.128.0/17	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
133.130.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
133.32.0.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.149.192.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.247.0.0/18	AS131918	SHONAN CABLE NETWORK	16,384
133.149.128.0/18	AS4677	Marubeni OKI Network Solutions Inc.	16,384
133.186.64.0/18	AS131915	Hamamatsu Cable Television .Inc	16,384
133.165.192.0/18	AS17534	NSK Co.,Ltd.	16,384
133.238.64.0/18	AS131958	TAMA CABLE NETWORK CO., LTD.	16,384
133.165.128.0/18	AS2527	Sony Network Communications Inc.	16,384
133.226.64.0/19	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	8,192
133.238.32.0/19	AS2497	IIJ Internet	8,192
133.232.64.0/19	AS2514	INTERLINK Co.,LTD	8,192
133.32.224.0/19	AS2519	ARTERIA Networks Corporation	8,192
133.232.0.0/19	AS7682	DMG MORI Digital Co., LTD.	8,192
133.226.96.0/19	AS9997	CTY Co.,Ltd.	8,192
133.226.144.0/20	AS24279	SENDAI CATV CO.,LTD.	4,096
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
133.238.16.0/20	AS2497	IIJ Internet	4,096
133.32.128.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.226.0.0/20	AS131934	ICC Corporation	4,096
133.32.176.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.232.112.0/20	AS2514	INTERLINK Co.,LTD	4,096
133.88.48.0/20	AS23778	IMIZU CABLE NETWORK CO.,LTD.	4,096
133.226.160.0/20	AS17958	Kasaoka Cable Vision LIMITED	4,096
133.88.32.0/20	AS18281	Chitahanto Cable Network Corp.	4,096
133.226.16.0/20	AS23624	Chukai Television Co,.Ltd.	4,096
133.32.208.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.247.240.0/20	AS131923	MCAT Ltd.	4,096

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
133.23.4.82	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.63ms` from Tokyo, JP
133.23.12.17	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.94ms` from Tokyo, JP
133.23.8.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.16ms` from Tokyo, JP
133.23.5.3	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.70ms` from Tokyo, JP
133.23.11.102	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.19ms` from Tokyo, JP
133.23.9.2	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`4.04ms` from Tokyo, JP
133.23.14.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`4.08ms` from Tokyo, JP
133.23.2.250	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.15ms` from Tokyo, JP
133.23.6.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.71ms` from Tokyo, JP
133.23.115.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.85ms` 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
35.167.195.80	AS16509 Amazon.com, Inc.	`0.10ms` from Boardman, US
98.213.159.32	AS7922 Comcast Cable Communications, LLC	`10.40ms` from Chicago, US
78.35.1.208	AS8422 NetCologne Gesellschaft fur Telekommunikation mbH	`1.20ms` from Duesseldorf, DE
151.73.52.16	AS1267 WIND TRE S.P.A.	`6.58ms` from Frosinone, IT
113.180.254.160	AS45899 VNPT Corp	`5.33ms` from Ho Chi Minh City, VN
59.188.41.64	AS17444 HKBN Enterprise Solutions Limited	`2.72ms` from Hong Kong, HK
102.130.122.128	AS328364 Host Africa (Pty) Ltd	`0.26ms` from Johannesburg, ZA
5.81.88.48	AS2856 British Telecommunications PLC	`4.79ms` from London, GB
90.217.102.208	AS5607 Sky UK Limited	`7.42ms` from London, GB
95.249.207.96	AS3269 Telecom Italia S.p.A.	`7.17ms` from Milan, IT
222.190.247.48	AS4134 CHINANET-BACKBONE	`1.64ms` from Nanjing, CN
80.140.96.176	AS3320 Deutsche Telekom AG	`5.16ms` from Nuernberg, DE
31.57.108.176	AS56971 AS56971 Cloud	`0.28ms` from Paris, FR
20.214.187.176	AS8075 Microsoft Corporation	`0.30ms` from Seoul, KR
88.80.114.0	AS39184 UltraNET Ltd	`3.99ms` from Sofia, BG
118.108.69.32	AS2518 BIGLOBE Inc.	`15.53ms` from Tokyo, JP
95.49.40.48	AS5617 Orange Polska Spolka Akcyjna	`5.17ms` from Warsaw, PL
20.81.95.16	AS8075 Microsoft Corporation	`0.62ms` from Ashburn, US
125.34.183.0	AS4808 China Unicom Beijing Province Network	`3.26ms` from Beijing, CN
91.3.249.64	AS3320 Deutsche Telekom AG	`5.26ms` from Berlin, DE
108.89.19.176	AS7018 AT&T Enterprises, LLC	`2.75ms` from Chicago, US
98.21.170.128	AS7029 Windstream Communications LLC	`7.62ms` from Dallas, US
202.82.21.112	AS4515 PCCW IMS Ltd (PCCW Business Internet Access)	`1.20ms` from Hong Kong, HK
174.136.228.224	AS23422 Endstream Communications, LLC	`0.01ms` from New York City, US
87.139.194.112	AS3320 Deutsche Telekom AG	`2.52ms` from Nuernberg, DE

Traceroute

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

traceroute -a -n -q1 -f5 -m9 133.23.38.90

traceroute to 133.23.38.90 (133.23.38.90): 9 hops max, 52 byte packets

5 [] 210.173.184.25 0.692 ms

6 [AS2907] 150.99.14.176 6.82 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On November 14th 2025

What are IP address ranges?

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