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	Prefix	Description
	130.69.0.0/16	University of Tokyo
	133.11.0.0/16	University of Tokyo
	157.82.0.0/16	University of Tokyo
	192.51.208.0/20	imported inetnum object for JNIC
	2404:d540::/32	Japan Network Information Center
	2404:d540:1::/48	THE UNIVERSITY OF TOKYO

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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	✔	✔
	AS2500	WIDE Project	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2907	Science Information Network	✔	✔
	AS2500	WIDE Project	✔	✘

[ 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]                  2501
b. [AS Name]                    UTnet
g. [Organization]               The University of Tokyo
m. [Administrative Contact]     MN010JP
n. [Technical Contact]          YS7474JP
n. [Technical Contact]          MN010JP
q. [Abuse]                      
o. [IMPORT]                     from AS2500 100 accept ANY
o. [IMPORT]                     from AS2907 100 accept ANY
p. [EXPORT]                     to AS2500 announce AS2501
p. [EXPORT]                     to AS2907 announce AS2501
[Assigned Date]                 
[Last Update]                   2014/03/18 15:59:42(JST)

Last Update: 2024-05-05T21:44:30Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
JPIRR	as2907:as-sinet	150
RIPE	as20965:as-from-tein-to-geant	654
RADB	as-bbix-t	877
JPIRR	as-bbix-t	877
RADB	as-bbix-t-v6	683
RADB	as-iij6	4101
RADB	as-2500-2914	33
RADB	as-wide	52
ARIN	as1239:as-customers	4238
NTTCOM	as-2500arcstar	9
RADB	as-iij	4729
JPIRR	as-apanjp	3
JPIRR	as-iij6	4101
RADB	as-kdddmpeer	192
JPIRR	as-iij	4729
JPIRR	as-bbix-t-v6	683
LEVEL3	as-level3-origins-na	0
RADB	as2500:as-transit	25