133.236.0.0/16

AS2497 · Internet Initiative Japan Inc.

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Summary

Country	Japan
Domain	iij.ad.jp
ASN	AS2497
Registry	JPNIC
ID	IIJ-CIDR-BLK-JP

WHOIS Details

inetnum:        133.236.0.0 - 133.236.255.255
netname:        IIJ-CIDR-BLK-JP
descr:          Internet Initiative Japan Inc.
remarks:        Email address for spam or abuse complaints : abuse-contact@iij.ad.jp
country:        JP
admin-c:        JP00010080
tech-c:         JP00010080
last-modified:  2014-08-01T02:13:21Z
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
source:         JPNIC

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
133.142.0.0/16	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 are 2 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
133.236.3.157	0x00.info	1
133.236.48.2	anritsu.co.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

Read more

Pingable IPs

1,838 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
133.236.246.226	AS2497 Internet Initiative Japan Inc.	`27.89ms` from Osaka, JP
133.236.228.247	AS2497 Internet Initiative Japan Inc.	`26.08ms` from Osaka, JP
133.236.245.122	AS2497 Internet Initiative Japan Inc.	`25.76ms` from Osaka, JP
133.236.199.190	AS2497 Internet Initiative Japan Inc.	`23.64ms` from Tokyo, JP
133.236.212.232	AS2497 Internet Initiative Japan Inc.	`26.89ms` from Tokyo, JP
133.236.247.117	AS2497 Internet Initiative Japan Inc.	`29.09ms` from Osaka, JP
133.236.236.120	AS2497 Internet Initiative Japan Inc.	`29.48ms` from Osaka, JP
133.236.196.112	AS2497 Internet Initiative Japan Inc.	`25.99ms` from Tokyo, JP
133.236.215.146	AS2497 Internet Initiative Japan Inc.	`19.38ms` from Tokyo, JP
133.236.249.155	AS2497 Internet Initiative Japan Inc.	`25.16ms` from Osaka, JP
133.236.251.201	AS2497 Internet Initiative Japan Inc.	`23.94ms` from Osaka, JP
133.236.205.36	AS2497 Internet Initiative Japan Inc.	`16.53ms` from Tokyo, JP
133.236.44.249	AS2497 Internet Initiative Japan Inc.	`0.94ms` from Tokyo, JP
133.236.216.137	AS2497 Internet Initiative Japan Inc.	`21.75ms` from Tokyo, JP
133.236.231.183	AS2497 Internet Initiative Japan Inc.	`25.24ms` from Osaka, JP
133.236.244.199	AS2497 Internet Initiative Japan Inc.	`25.00ms` from Osaka, JP
133.236.203.6	AS2497 Internet Initiative Japan Inc.	`30.34ms` from Tokyo, JP
133.236.211.207	AS2497 Internet Initiative Japan Inc.	`28.44ms` from Tokyo, JP
133.236.224.33	AS2497 Internet Initiative Japan Inc.	`21.82ms` from Osaka, JP
133.236.210.129	AS2497 Internet Initiative Japan Inc.	`25.08ms` from Tokyo, JP
133.236.221.61	AS2497 Internet Initiative Japan Inc.	`29.16ms` from Tokyo, JP
133.236.225.242	AS2497 Internet Initiative Japan Inc.	`25.06ms` from Osaka, JP
133.236.201.136	AS2497 Internet Initiative Japan Inc.	`31.96ms` from Tokyo, JP
133.236.235.225	AS2497 Internet Initiative Japan Inc.	`31.97ms` from Tokyo, JP
133.236.255.45	AS2497 Internet Initiative Japan Inc.	`19.39ms` 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
20.221.33.16	AS8075 Microsoft Corporation	`0.35ms` from Des Moines, US
14.215.58.128	AS4134 CHINANET-BACKBONE	`5.29ms` from Guangzhou, CN
183.128.223.16	AS4134 CHINANET-BACKBONE	`6.70ms` from Hangzhou, CN
67.241.33.144	AS11351 Charter Communications Inc	`19.07ms` from New York City, US
88.181.231.80	AS12322 Free SAS	`11.59ms` from Paris, FR
201.138.241.160	AS8151 UNINET	`8.04ms` from Santiago de Queretaro, MX
58.12.44.16	AS17506 ARTERIA Networks Corporation	`4.16ms` from Tokyo, JP
202.215.188.240	AS2519 ARTERIA Networks Corporation	`2.33ms` from Tokyo, JP
34.84.179.48	AS396982 Google LLC	`0.14ms` from Tokyo, JP
70.48.21.16	AS577 Bell Canada	`6.06ms` from Toronto, CA
52.179.156.128	AS8075 Microsoft Corporation	`0.23ms` from Boydton, US
87.239.59.240	AS29148 SURANY.NET s.r.o.	`2.73ms` from Bratislava, SK
97.84.239.80	AS20115 Charter Communications LLC	`18.77ms` from Chicago, US
79.192.12.192	AS3320 Deutsche Telekom AG	`1.66ms` from Duesseldorf, DE
27.78.37.128	AS7552 Viettel Group	`0.98ms` from Ho Chi Minh City, VN
58.220.38.64	AS146966 China Telecom	`4.23ms` from Huai'an, CN
159.0.34.192	AS25019 Saudi Telecom Company JSC	`5.81ms` from Jeddah, SA
190.89.166.0	AS270377 Ana Rita Rodrigues Pereira	`14.68ms` from Joao Pessoa, BR
86.24.167.48	AS5089 Virgin Media Limited	`4.82ms` from London, GB
86.13.209.192	AS5089 Virgin Media Limited	`8.64ms` from London, GB
45.166.49.0	AS267952 HILINK TECNOLOGIA E COMUNICACAO LTDA	`0.21ms` from Rio de Janeiro, BR
38.89.192.176	AS174 Cogent Communications, LLC	`1.42ms` from San Jose, US
76.126.235.128	AS7922 Comcast Cable Communications, LLC	`10.19ms` from San Jose, US
61.247.151.16	AS10036 DLIVE	`1.69ms` from Seoul, KR
87.233.189.176	AS15703 TrueServer BV AS number	`0.50ms` from Amsterdam, NL

Traceroute

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

traceroute -a -n -q1 -m6 133.236.21.255

traceroute to 133.236.21.255 (133.236.21.255): 6 hops max, 52 byte packets

1 [AS15169] 74.125.37.114 156.045 ms

2 *

3 [AS2497] 58.138.101.213 150.603 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Delhi, IN

On December 28th 2025

What are IP address ranges?

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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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