| Serial | Label | Owner key | Owner | Description |
|---|---|---|---|---|
| 1665057615 (2022-10-06) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | PF-DN42 | |
| 1538911791 (2018-10-07) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | PF-DN42 | |
| 1516140077 (2018-01-16) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | ZEROHEATH-DN42 | Heath Net |
| 1512579642 (2017-12-06) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | ZEROHEATH-DN42 | Heath Net |
| 1507388447 (2017-10-07) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | ZEROHEATH-DN42 | Heath Net |
| 1499882413 (2017-07-12) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | ZEROHEATH-DN42 | Heath Net |
| 1498881676 (2017-07-01) | IPv4 network 172.21.74.0/27 | cb2d7f7227 | ZEROHEATH-DN42 | Heath Net |