133.58.0.0/16

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
133.114.0.0/16	AS2527	Sony Network Communications Inc.	65,536
133.18.0.0/16	AS24282	KAGOYA JAPAN Inc.	65,536
133.163.0.0/16	AS2510	FUJITSU LIMITED	65,536
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536
133.137.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.159.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.123.0.0/16	AS7522	STNet, Incorporated	65,536
133.218.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.236.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.112.0.0/16	AS2522	Japan Network Information Center	65,536
133.142.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.110.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
133.175.0.0/16	AS2519	ARTERIA Networks Corporation	65,536
133.125.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.167.0.0/16	AS9371	SAKURA Internet Inc.	65,536
133.242.0.0/16	AS7684	SAKURA Internet Inc.	65,536
133.186.128.0/17	AS45974	NHN Cloud Japan Corporation	32,768
133.130.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
133.232.128.0/17	AS2514	NTT PC Communications,Inc.	32,768
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
133.247.0.0/18	AS131918	SHONAN CABLE NETWORK	16,384
133.165.192.0/18	AS17534	NSK Co.,Ltd.	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
133.165.128.0/18	AS2527	Sony Network Communications Inc.	16,384
133.238.64.0/18	AS131958	TAMA CABLE NETWORK CO., LTD.	16,384
133.32.0.0/18	AS2519	ARTERIA Networks Corporation	16,384
133.149.128.0/18	AS4677	Marubeni OKI Network Solutions Inc.	16,384
133.226.96.0/19	AS9997	CTY Co.,Ltd.	8,192
133.232.0.0/19	AS7682	DMG MORI Digital Co., LTD.	8,192
133.232.64.0/19	AS2514	INTERLINK Co.,LTD	8,192
133.226.64.0/19	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	8,192
133.238.32.0/19	AS2497	IIJ Internet	8,192
133.32.224.0/19	AS2519	ARTERIA Networks Corporation	8,192
133.238.16.0/20	AS2497	IIJ Internet	4,096
133.32.208.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.186.0.0/20	AS10010	TOKAI Communications Corporation	4,096
133.247.144.0/20	AS131949	General Incorporated Foundation Aso Telework Center	4,096
133.226.0.0/20	AS131934	ICC Corporation	4,096
133.232.96.0/20	AS2514	INTERLINK Co.,LTD	4,096
133.226.144.0/20	AS24279	SENDAI CATV CO.,LTD.	4,096
133.32.80.0/20	AS131918	SHONAN CABLE NETWORK	4,096
133.232.112.0/20	AS2514	INTERLINK Co.,LTD	4,096
133.32.128.0/20	AS2519	ARTERIA Networks Corporation	4,096
133.226.16.0/20	AS23624	Chukai Television Co,.Ltd.	4,096
133.117.112.0/20	AS18283	Chupicom Inc.	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
133.247.240.0/20	AS131923	MCAT Ltd.	4,096

Hosted domains

There are 4 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
133.58.120.110	radonpydb.com	3
133.58.39.13	ism.ac.jp	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
133.58.39.207	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.26ms` from Tokyo, JP
133.58.20.17	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.72ms` from Tokyo, JP
133.58.32.254	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.72ms` from Tokyo, JP
133.58.120.40	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.72ms` 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
84.2.209.112	AS5483 Magyar Telekom Plc.	`0.81ms` from Budapest, HU
87.61.255.64	AS3292 TDC Holding A/S	`0.98ms` from Copenhagen, DK
86.137.202.112	AS2856 British Telecommunications PLC	`5.25ms` from Erith, GB
63.179.59.176	AS16509 Amazon.com, Inc.	`0.34ms` from Frankfurt am Main, DE
47.229.54.112	AS20115 Charter Communications LLC	`3.41ms` from Los Angeles, US
203.13.171.240	AS135569 NTT Data Global Delivery Services Private Limited	`13.09ms` from Mumbai, IN
182.90.192.128	AS4837 CHINA UNICOM China169 Backbone	`3.73ms` from Nanning, CN
88.165.204.160	AS12322 Free SAS	`7.21ms` from Paris, FR
104.90.86.112	AS16625 Akamai Technologies, Inc.	`0.15ms` from Philadelphia, US
143.109.60.160	AS61317 Hivelocity LLC	`0.26ms` from Sao Paulo, BR
128.95.83.16	AS73 University of Washington	`0.67ms` from Seattle, US
116.122.189.0	AS9318 SK Broadband Co Ltd	`1.56ms` from Seoul, KR
124.112.179.192	AS4134 CHINANET-BACKBONE	`10.61ms` from Wuhan, CN
203.158.200.96	AS37932 Rajamangala University of Technology Isan	`8.19ms` from Bangkok, TH
125.124.126.112	AS58461 CT-HangZhou-IDC	`5.29ms` from Hangzhou, CN
50.93.59.80	AS16509 Amazon.com, Inc.	`0.16ms` from Milan, IT
217.70.185.80	AS29169 GANDI SAS	`0.21ms` from Paris, FR
20.83.66.128	AS8075 Microsoft Corporation	`0.29ms` from Quincy, US
54.165.147.96	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
18.232.64.208	AS14618 Amazon.com, Inc.	`0.59ms` from Reston, US
108.249.168.32	AS7018 AT&T Enterprises, LLC	`3.83ms` from San Antonio, US
115.22.35.240	AS4766 Korea Telecom	`6.26ms` from Seoul, KR
220.74.248.160	AS4766 Korea Telecom	`2.34ms` from Seoul, KR
119.112.203.128	AS4837 CHINA UNICOM China169 Backbone	`9.29ms` from Tieling, CN
42.125.178.192	AS10010 TOKAI Communications Corporation	`3.81ms` from Tokyo, JP

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 133.58.77.47

traceroute to 133.58.77.47 (133.58.77.47): 9 hops max, 52 byte packets

5 [] 103.246.232.150 46.055 ms

6 [AS2907] 150.99.11.134 46.194 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On April 13th 2026

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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