I can't speak for aptum, but I'm curious as to why this is important to you?
4.2.3.7. Registration
ISPs are required to demonstrate efficient use of IP address space allocations by providing appropriate documentation, including but not limited to assignment histories, showing their efficient use.
4.2.3.7.1. Reassignment and Reallocation Information
Each IPv4 reassignment or reallocation containing a /29 or more addresses shall be registered via SWIP or a directory services system which meets the standards set forth in section 3.2.
Reassignment registrations must include each customer name, except where specifically exempted by this policy. Reassignment registrations shall only include point of contact (POC) information if either: (1) requested by the customer; or (2) the reassigned block is intended to be routed and announced outside of the provider’s network.
Reallocation registrations must contain the customer’s organization name and appropriate point of contact (POC) information.
6.5.5.1. Reassignment Information
Each static IPv6 reassignment or reallocation containing a /47 or more addresses, or subdelegation of any size that will be individually announced, shall be registered in the WHOIS directory via SWIP or a distributed service which meets the standards set forth in section 3.2. Reassignment and reallocation registrations shall include each client’s organizational information, except where specifically exempted by this policy.