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	Prefix	Description
	133.91.0.0/16

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2907	Science Information Network	✔	✘

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Peers

	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]                  23623
b. [AS Name]                    CHUO-U
g. [Organization]               Chuo University
m. [Administrative Contact]     HH17619JP
n. [Technical Contact]          KI3528JP
q. [Abuse]                      
o. [IMPORT]                     from AS2914 100 accept ANY
o. [IMPORT]                     from AS2907 100 accept ANY
p. [EXPORT]                     to AS2914 announce AS23623
p. [EXPORT]                     to AS2907 announce AS23623
[Assigned Date]                 2003/04/16
[Last Update]                   2013/04/04 14:05:07(JST)

Last Update: 2026-05-07T03:49:46Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-iij6	4488
RADB	as-iij	5135
RIPE	as20965:as-from-tein-to-geant	656
JPIRR	as-iij	5135
JPIRR	as-iij6	4488
LEVEL3	as-level3-origins-na	0
RADB	as-wide	52
JPIRR	as2907:as-sinet	150