| Serial | Label | Owner key | Owner | Description |
|---|---|---|---|---|
| 1456660871 (2016-02-28) | IPv4 network 172.23.76.64/26 | cb2d7f7227 | ZUMM-DN42 | Hassium ipv4 block |
| 1454972410 (2016-02-08) | IPv4 network 172.23.76.64/26 | cb2d7f7227 | ZUMM-DN42 | Hassium ipv4 block |
| 1426068010 (2015-03-11) | IPv4 network 172.23.76.64/26 | cb2d7f7227 | ZUMM-DN42 | Hassium ipv4 block |
| 1425834010 (2015-03-08) | IPv4 network 172.23.76.64/26 | cb2d7f7227 | ZUMM-DN42 | Hassium ipv4 block |