Autonomous System details
AS37917
University of Tsukuba — tsukuba.ac.jp
Summary
| Country |
 Japan
|
| Organization | University of Tsukuba |
| Domain | tsukuba.ac.jp |
| Number of IPv4 | 132,096 |
| Number of IPv6 | 0 |
| AS Type | Education |
| Registry | JPNIC |
| Allocated | January 01, 1970 (about 55 years ago) |
| Updated | June 11, 2007 (about 17 years ago) |
IP Ranges
AS37917 announces 3 IPv4 ranges and 0 IPv6 range.
That's a total of 132,096 IPv4 address and 0 IPv6 address.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 130.158.0.0/16 |
University of Tsukuba
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 133.51.0.0/16 |
Japan Network Information Center
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 163.220.252.0/22 |
University of Tsukuba
|
1,024 | APNIC | ALLOCATED PORTABLE |
Peers
There is no peer for AS37917.
Downstreams
There is no downstream for AS37917.