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	Prefix	Description
	133.40.0.0/16	National Institutes of Natural Sciences

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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]                  63777
b. [AS Name]                    STARCLUSTER
g. [Organization]               National Institutes of Natural Sciences National Astronomical Observatory of JAPAN
m. [Administrative Contact]     JW6891JP
n. [Technical Contact]          JP00174290
q. [Abuse]                      
o. [IMPORT]                     
p. [EXPORT]                     
[Assigned Date]                 2019/03/04
[Last Update]                   2019/03/04 18:00:27(JST)

Last Update: 2025-07-10T00:08:53Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
NTTCOM	as-equinix-ap	2395
RADB	as-equinix-pe	2359
RADB	as-iij	5322
RIPE	as20965:as-from-tein-to-geant	656
RADB	as-equinix-ty	2896
RADB	as-iij6	4693
JPIRR	as-iij	5322
RADB	as-equinix-me	2623
ARIN	as1239:as-customers	4238
JPIRR	as2907:as-sinet	150
JPIRR	as-iij6	4693