AS2501 - The University of Tokyo
Detailed information about the Autonomous System AS2501:
IPv4 Prefixes
Currently, there are 4 IPv4 prefixes for AS2501 - The University of Tokyo in
the database.
This amounts to 200,704 IPv4 addresses that are hosted on this ASN.
130.69.0.0/16
133.11.0.0/16
157.82.0.0/16
192.51.208.0/20
IPv6 Prefixes
Currently, there are 2 IPv6 prefixes for AS2501 - The University of Tokyo in
the database.
This amounts to 79,229,371,440,083,950,000,000,000,000 IPv6 addresses that are hosted on this ASN.
2404:d540::/32
2404:d540:1::/48
Raw WHOIS Record - AS2501 - The University of Tokyo
[ 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)