rangescan

gem install rangescan

$ rangescan
Commands:
  rangescan help [COMMAND]                      # Describe available commands or one specific command
  rangescan scan [IP_WITH_SUBNET_MASK, REGEXP]  # Scan an IP range & filter by a regexp

$ rangescan help scan
Usage:
  rangescan scan [IP_WITH_SUBNET_MASK, REGEXP]

Options:
  [--host=HOST]                      # Host header
  [--port=N]                         # Port
  [--scheme=SCHEME]                  # Scheme (http or https)
  [--timeout=N]                      # Timeout in seconds
  [--user-agent=USER_AGENT]          # User Agent
  [--verify-ssl], [--no-verify-ssl]  # Whether to verify SSL or not
  [--max-concurrency=N]              # Concurrency limit for HTTP requests to scan

Scan an IP range & filter by a regexp (default regexp = .)