133.73.0.0/16

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
133.242.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.175.0.0/16	AS2519	ARTERIA Networks Corporation	65,536
133.142.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.125.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.236.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.218.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.112.0.0/16	AS2522	Japan Network Information Center	65,536
133.163.0.0/16	AS2510	FUJITSU LIMITED	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
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536
133.18.0.0/16	AS24282	KAGOYA JAPAN Inc.	65,536
133.114.0.0/16	AS2527	Sony Network Communications Inc.	65,536
133.159.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.167.0.0/16	AS9371	SAKURA Internet Inc.	65,536
133.123.0.0/16	AS7522	STNet, Incorporated	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
133.232.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
133.186.128.0/17	AS45974	NHN Cloud Japan Corporation	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
133.165.128.0/18	AS2527	Sony Network Communications Inc.	16,384
133.186.64.0/18	AS131915	Hamamatsu Cable Television .Inc	16,384
133.247.0.0/18	AS131918	SHONAN CABLE NETWORK	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
133.149.128.0/18	AS4677	Marubeni OKI Network Solutions Inc.	16,384
133.149.192.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.232.0.0/19	AS7682	DMG MORI Digital Co., LTD.	8,192
133.232.64.0/19	AS2514	INTERLINK Co.,LTD	8,192
133.32.224.0/19	AS2519	ARTERIA Networks Corporation	8,192
133.238.32.0/19	AS2497	IIJ Internet	8,192
133.226.96.0/19	AS9997	CTY Co.,Ltd.	8,192
133.226.64.0/19	AS7524	ITEC Hankyu Hanshin 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
133.73.245.33	d-lounge.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

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

IP Address	ASN	Details
133.73.133.10	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.79ms` from Tokyo, JP
133.73.70.116	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.76ms` from Tokyo, JP
133.73.240.1	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.89ms` from Tokyo, JP
133.73.254.13	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`4.26ms` from Tokyo, JP
133.73.250.15	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.96ms` from Tokyo, JP
133.73.243.40	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.01ms` from Tokyo, JP
133.73.251.25	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.95ms` from Tokyo, JP
133.73.252.41	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.92ms` from Tokyo, JP
133.73.245.32	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.93ms` 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
91.197.143.16	AS43584 Maytech Communications Ltd	`0.74ms` from Amsterdam, NL
173.172.247.80	AS11427 Charter Communications Inc	`16.05ms` from Dallas, US
176.31.47.208	AS16276 OVH SAS	`0.08ms` from Gravelines, FR
178.184.198.112	AS12389 PJSC Rostelecom	`12.82ms` from Krasnoyarsk, RU
66.78.61.192	AS21769 Colocation America Corporation	`0.15ms` from Los Angeles, US
68.122.30.112	AS7018 AT&T Enterprises, LLC	`2.55ms` from Los Angeles, US
50.114.163.240	AS58061 Scalaxy B.V.	`0.26ms` from Meppel, NL
77.57.10.128	AS6730 Sunrise GmbH	`5.66ms` from Zuerich, CH
108.179.248.112	AS19871 Network Solutions, LLC	`0.84ms` from Atlanta, US
177.135.231.144	AS18881 TELEFÔNICA BRASIL S.A	`1.80ms` from Brasilia, BR
34.13.64.176	AS396982 Google LLC	`1.04ms` from Columbus, US
14.212.192.64	AS4134 CHINANET-BACKBONE	`3.61ms` from Guangzhou, CN
222.255.235.80	AS7643 Vietnam Posts and Telecommunications (VNPT)	`0.54ms` from Ho Chi Minh City, VN
39.48.221.144	AS17557 Pakistan Telecommunication Company Limited	`2.27ms` from Karachi, PK
82.106.99.0	AS3269 Telecom Italia S.p.A.	`3.34ms` from Milan, IT
34.17.95.96	AS396982 Google LLC	`2.23ms` from Milan, IT
200.159.158.0	AS27688 Winfnet Telecom Wireless Ltda	`0.71ms` from Rio de Janeiro, BR
202.253.139.48	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`4.41ms` from Tokyo, JP
69.71.89.128	AS26288 Keewaytinook Okimakanak	`7.52ms` from Toronto, CA
185.248.140.144	AS216188 Bieber IT GmbH	`3.69ms` from Berlin, DE
83.251.138.80	AS1257 Tele2 Sverige AB	`8.32ms` from Falkenberg, SE
109.223.245.80	AS3215 Orange S.A.	`12.45ms` from Frankfurt am Main, DE
5.42.137.208	AS41998 NetCom BW GmbH	`8.36ms` from Frankfurt am Main, DE
73.116.253.160	AS7922 Comcast Cable Communications, LLC	`4.16ms` from Fremont, US
160.187.55.0	AS153117 PT Globalindo Solusi Nusantara	`0.38ms` from Jakarta, ID

Traceroute

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

traceroute -a -n -q1 -m7 133.73.58.17

traceroute to 133.73.58.17 (133.73.58.17): 7 hops max, 52 byte packets

1 [AS15169] 66.249.95.81 254.443 ms

2 [AS15169] 108.170.248.242 256.657 ms

3 *

4 [AS2907] 150.99.9.124 270.694 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Hamina, FI

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.

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