16904: Filter = DENY covered more specifics

  206.188.238.0/24     4777 2516 3257 16904 - Withdrawn - matching aggregate 206.188.224.0/19 4777 2516 3257 16904
  216.27.128.0/20      4777 2516 3257 16904 - Withdrawn - aggregated with 216.27.144.0/20 (4777 2516 3257 16904)
  216.27.144.0/20      4777 2516 3257 16904 - Withdrawn - aggregated with 216.27.128.0/20 (4777 2516 3257 16904)
as-report v4.4 (gih) 24/02/14