172.16.16.16   !ip !rdap !whois !bl !ptr24 !scan !tr !dnstr !g !gsec
CIDR block	172.16.16.0/23 !cidr !bgp
Range: Network - Broadcast	172.16.16.0 - 172.16.17.255
Netmask	255.255.254.0
Number of IP addresses in the block	512
Network Address: 172.16.16.0   !ip !rdap !whois !bl !ptr24 !scan !tr !dnstr !g !gsec
Broadcast Address: 172.16.17.255   !ip !rdap !whois !bl !ptr24 !scan !tr !dnstr !g !gsec
172.16.0.0/12 - Private-Use 172.16.0.0/12 was allocated on February of 1996. Addresses in 172.16.0.0/12 may be used as the source address of an IP datagram that transits two devices. Addresses in 172.16.0.0/12 may be used as the destination address of an IP datagram that transits two devices. Addresses in 172.16.0.0/12 are forwardable. A router may forward an IP datagram to Addresses in 172.16.0.0/12 between external interfaces Addresses in 172.16.0.0/12 are NOT globally reachable An IP datagram may NOT be forwarded to Addresses in 172.16.0.0/12 beyond a specified administative domain. The 172.16.0.0/12 special purpose address block is set aside for use in private networks. Addresses within 172.16.0.0/12 do not legimately appear on the public Internet. Addresses within 172.16.0.0/12 may be used without any coordination with IANA or an Internet registry. [ RFC1918, ^ ]
!g 172.16.16.16/23

  
  ___________   ______________
             | /
             |/
                           
    |   ____________   |
    |__|  __    __  |__|
    |__| |__|  |__| |__|
       |            |
       |     __     |
       |    |__|    |
       |____________|
       __IPDUHHUDPI__