Autonomous System details
AS2501
The University of Tokyo — u-tokyo.ac.jp
Summary
| Country |
 Japan
|
| Organization | The University of Tokyo |
| Domain | u-tokyo.ac.jp |
| Number of IPv4 | 200,704 |
| Number of IPv6 | 7.9229× 1028 |
| AS Type | Education |
| Registry | JPNIC |
| Allocated | January 01, 1970 (about 55 years ago) |
| Updated | March 19, 2014 (about 10 years ago) |
IP Ranges
AS2501 announces 4 IPv4 ranges and 2 IPv6 ranges.
That's a total of 200,704 IPv4 addresses and 7.9229× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 130.69.0.0/16 |
University of Tokyo
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 133.11.0.0/16 |
Japan Network Information Center
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 157.82.0.0/16 |
University of Tokyo
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 192.51.208.0/20 |
University of Tokyo
|
4,096 | JPNIC |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2404:d540::/32 |
Japan Network Information Center
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 2404:d540:1::/48 |
THE UNIVERSITY OF TOKYO
|
1.2089× 1024 | JPNIC |
Peers
There is no peer for AS2501.
Downstreams
There is no downstream for AS2501.