AS4729 Japan Atomic Energy Agency

Japan Atomic Energy Agency

AS Number 4729

Overview
Prefixes
Connectivity
Whois

Registered on: 3 Feb 1997 (29 years old)
Registered to: A91A7381 (apnic)

Network status: Active, Allocated under JPNIC (APNIC)

Network type: Content

Prefixes Originated: 2 IPv4, 0 IPv6

Upstreams

AS2907 - Science Information Network

Rankings

#58 for Originated IPv4 Space in Japan

Prefixes Originated

2 IPv4, 0 IPv6

Addresses Originated

512 /24's of IPv4

0 /48's of IPv6

	Prefix	Description
	133.53.0.0/16	Japan Atomic Energy Agency
	133.188.0.0/16	Japan Atomic Energy Agency

	ASN	Description	IPv4	IPv6
	AS2907	Science Information Network	✔	✘

	ASN	Description	IPv4	IPv6
	AS2907	Science Information Network	✔	✘

[ JPNIC database provides information regarding IP address and ASN. Its use   ]
[ is restricted to network administration purposes. For further information,  ]
[ use 'whois -h whois.nic.ad.jp help'. To only display English output,        ]
[ add '/e' at the end of command, e.g. 'whois -h whois.nic.ad.jp xxx/e'.      ]

Autonomous System Information:
a. [AS Number]                  4729
b. [AS Name]                    JAEA
g. [Organization]               Japan Atomic Energy Agency
m. [Administrative Contact]     TS82120JP
n. [Technical Contact]          TS90843JP
n. [Technical Contact]          IM19500JP
q. [Abuse]                      
o. [IMPORT]                     
p. [EXPORT]                     
[Assigned Date]                 1997/02/03
[Last Update]                   2025/12/19 11:11:02(JST)

Last Update: 2026-02-10T15:17:38Z UTC / (Click here to force a refresh)

Member of the following AS-SETs

-	Member	ASN Count
JPIRR	as2907:as-sinet	150
RADB	as-wide	52
RADB	as-iij	5284
ARIN	as1239:as-customers	4238
JPIRR	as-iij	5284
RADB	as-iij6	4655
JPIRR	as-iij6	4655
RIPE	as20965:as-from-tein-to-geant	656
LEVEL3	as-level3-origins-na	0

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Upstreams

Rankings

Network Policy

Prefixes in selected policy

Upstreams

Peers

Member of the following AS-SETs