Our agreed that our strategy is to move away from netbooted Pis.

Pis running Debian 10 LTS or earlier are now unsupported.

42 Raspberry Pi's in the Database, 34 with PI addresses.

Any that are assigned to the COs group are probaby of interest, especially if they've been seen on the network in the last six months. See COs Raspberry Pis.

Net-booted ones are a problem even if not in COs group; fenton (Hunter group) may be the only one. Look in the autoinstaller view and check for netboot being set to "RPi something or other".