Is it possible to insert multiple IP addresses in a single entry in a pg_hba.conf file?
The documentation says:


  This field can contain either a host name, an IP address range, or one of the special key words mentioned below.
  
  An IP address range is specified using standard numeric notation for the range's starting address, then a slash (/) and a CIDR mask length.


Your addresses cannot be expressed with a CIDR mask (without also matching the other 125 addresses in the 0…127 range).