Home / AS21821
| RIR | arin |
|---|---|
| Country | US |
| Allocation date | 2017-04-03 |
| Org | Handle | First seen | Last seen |
|---|---|---|---|
| Montefiore Medical Center | AS21821 | 2026-07-13 17:00:05.950000 | 2026-09-01 10:30:05.970000 |
| Prefix | First seen | Last seen |
|---|---|---|
| 216.255.100.0/24 | 2026-06-30 00:00:00 | 2026-08-26 08:00:00 |
| 216.255.101.0/24 | 2026-06-30 00:00:00 | 2026-08-26 08:00:00 |
| 144.121.104.0/24 | 2026-06-30 00:00:00 | 2026-08-26 08:00:00 |
| 144.121.102.0/24 | 2026-06-30 00:00:00 | 2026-08-26 08:00:00 |
| Neighbour ASN | Direction | Power |
|---|---|---|
| AS32787 | left | 270 |
| AS46887 | left | 2 |
| AS54004 | left | 1 |