Autonomous System details

AS4729

Japan Atomic Energy Agency  ·  jaea.go.jp

Japan
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AS4729 – Japan Atomic Energy Agency

Field Value
Country Japan
Website jaea.go.jp
Hosted domains 2
IPv4 addresses 131,072
IPv6 addresses 0
ASN type Business
Registry jpnic
Updated 3 months ago on Dec 19, 2025

IP Ranges

Netblock Company Num of IPs
133.53.0.0/16 Japan Network Information Center 65,536
133.188.0.0/16 Japan Network Information Center 65,536

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS4729
                                                OrgID:          AS4729
                                                ASName:         AS4729
                                                ASNumber:       AS4729
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 2 domain names hosted across 2 IP addresses on this ASN.

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IP Address Domain Domains on this IP
133.188.68.94 ██████████ 1
133.188.113.250 ██████████ 1

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Peers

There is 1 peer for this ASN.

Peers Name
AS2907 Research Organization of Information and Systems, National Institute of Informatics
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS2907 Research Organization of Information and Systems, National Institute of Informatics
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
133.53.249.33 AS4729 Japan Atomic Energy Agency 3.86ms from Tokyo, JP
133.53.250.251 AS4729 Japan Atomic Energy Agency 3.64ms 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
124.42.68.25 AS4808 China Unicom Beijing Province Network 4.18ms from Beijing, CN
88.249.43.249 AS9121 Turk Telekomunikasyon Anonim Sirketi 13.48ms from Bursa, TR
169.63.25.57 AS36351 IBM Cloud 0.84ms from Dallas, US
132.194.149.89 AS16519 University of Colorado Denver 0.99ms from Denver, US
188.74.33.9 AS39835 goetel GmbH 0.62ms from Frankfurt am Main, DE
39.153.180.217 AS9808 China Mobile Communications Group Co., Ltd. 3.75ms from Hohhot, CN
106.240.160.233 AS3786 LG DACOM Corporation 1.45ms from Incheon, KR
121.189.59.185 AS4766 Korea Telecom 0.96ms from Incheon, KR
66.192.21.185 AS3549 Level 3 Parent, LLC 1.53ms from Murfreesboro, US
202.232.49.201 AS2497 Internet Initiative Japan Inc. 1.97ms from Osaka, JP
77.205.16.121 AS15557 Societe Francaise Du Radiotelephone - SFR SA 19.02ms from Paris, FR
157.55.184.233 AS8075 Microsoft Corporation 0.26ms from San Antonio, US
187.207.114.201 AS8151 UNINET 3.89ms from Santiago de Queretaro, MX
182.252.181.9 AS38661 abcle 1.37ms from Seoul, KR
222.72.94.121 AS4812 China Telecom (Group) 2.53ms from Shanghai, CN
91.129.15.89 AS1257 Tele2 Sverige AB 0.41ms from Stockholm, SE
91.112.70.121 AS8447 A1 Telekom Austria AG 4.92ms from Vienna, AT
80.123.142.169 AS8447 A1 Telekom Austria AG 3.49ms from Vienna, AT
89.72.171.137 AS9141 P4 Sp. z o.o. 9.96ms from Warsaw, PL
86.33.161.249 AS205714 Telemach Hrvatska d.o.o. 8.06ms from Zagreb, HR
4.78.211.41 AS3356 Level 3 Parent, LLC 0.37ms from Atlanta, US
5.28.92.89 AS50436 Tele Columbus AG 5.86ms from Berlin, DE
156.222.39.57 AS8452 TE-AS 5.57ms from Cairo, EG
63.151.250.185 AS209 CenturyLink Communications, LLC 18.60ms from Chicago, US
67.79.15.73 AS11427 Charter Communications Inc 2.65ms from Dallas, US

Traceroute

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

$
traceroute -a -n -q1 -m5 133.188.104.150
traceroute to 133.188.104.150 (133.188.104.150): 5 hops max, 52 byte packets
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Aktau, KZ
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS4729 at robtex.

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