my %hash = $VAR1 = {
          '900000001' => {
                           'Network1' => [
                                              'Not used',
                                              'Not used',
                                              'Not used',
                                              'Not used'
                                            ],
                           'Network1 ENV' => [
                                                   '2020-09-09T18:36:50.000Z',
                                                   '2020-09-09T18:36:50.000Z'
                                                 ],
                           'NETOWORK2' => [
                                              '2021-03-10T18:15:54.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2021-03-10T18:15:54.000Z'
                                            ]
                         },
          '266000003' => {
                           'Network1 ENV' => [
                                                   '2021-03-08T13:34:59.000Z'
                                                 ]
                         },
          '566000003' => {
                           'Network1 ENV' => [
                                                   '2020-09-09T18:36:50.000Z',
                                                   '2020-09-09T18:36:50.000Z',
                                                   '2020-09-09T18:36:50.000Z'
                                                 ],
                           'NETOWORK2' => [
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2021-03-10T18:15:54.000Z',
                                              '2021-03-10T18:15:54.000Z',
                                              '2020-12-17T19:36:21.000Z',
                                              '2021-03-10T18:15:54.000Z'
                                            ],
                           'Network1' => [
                                              'Not used',
                                              'Not used'
                                            ]
                         }
        };