| Serial | Label | Owner key | Owner | Description |
|---|---|---|---|---|
| 1648684812 (2022-03-31) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1522537229 (2018-03-31) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1518602429 (2018-02-14) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1516140077 (2018-01-16) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1512579641 (2017-12-06) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1507388447 (2017-10-07) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1492308040 (2017-04-16) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1490659211 (2017-03-28) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR Reserved Network for Hosts |
| 1486299611 (2017-02-05) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR's IPv4 Block |
| 1485838810 (2017-01-31) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR's IPv4 Block |
| 1485820810 (2017-01-31) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | ALLENZ-DN42 | ATR's IPv4 Block |
| 1475024413 (2016-09-28) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | KRSTN-DN42 | |
| 1475010014 (2016-09-27) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | KRSTN-DN42 | |
| 1460062807 (2016-04-07) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | KRSTN-DN42 | |
| 1460055608 (2016-04-07) | IPv4 network 172.20.56.0/25 | cb2d7f7227 | KRSTN-DN42 |