| Serial | Label | Owner key | Owner | Description |
|---|---|---|---|---|
| 1507388447 (2017-10-07) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1505894518 (2017-09-20) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1500037209 (2017-07-14) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1499882413 (2017-07-12) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1499176811 (2017-07-04) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1498100431 (2017-06-22) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1497704408 (2017-06-17) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1497693608 (2017-06-17) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | JRB0001-DN42 | |
| 1496408408 (2017-06-02) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | PDOSTAL-DN42 | Pavel Dostal's PDOSTAL 172.21.100.16/28 block |
| 1496397609 (2017-06-02) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | PDOSTAL-DN42 | Pavel Dostal's PDOSTAL 172.21.100.16/28 block |
| 1467556430 (2016-07-03) | IPv4 network 172.21.100.16/28 | cb2d7f7227 | ORG-FLORIANB |