# ./ip6calc.py 2001:0000:0000:0000:0202:c2ff:fe1e:1918
Address:
  (Compressed)  2001::202:c2ff:fe1e:1918
    (Exploded)  2001:0000:0000:0000:0202:c2ff:fe1e:1918
      (Binary)  0010000000000001:0000000000000000:0000000000000000:0000000000000000:0000001000000010:1100001011111111:1111111000011110:0001100100011000

Address type is: global unicast

This address might have been autogenerated by an host with MAC address: 00:02:c2:1e:19:18

# ./ip6calc.py 2001:0000:fedc:8000::/50
Address:
  (Compressed)  2001:0:fedc:8000::/50
    (Exploded)  2001:0000:fedc:8000:0000:0000:0000:0000/50
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1000000000000000:0000000000000000:0000000000000000:0000000000000000:0000000000000000/50

Address type is: global unicast

Netmask:
  (Compressed)  ffff:ffff:ffff:c000::
    (Exploded)  ffff:ffff:ffff:c000:0000:0000:0000:0000
      (Binary)  1111111111111111:1111111111111111:1111111111111111:1100000000000000:0000000000000000:0000000000000000:0000000000000000:0000000000000000

First address assignable: 
  (Compressed)  2001:0:fedc:8000::
    (Exploded)  2001:0000:fedc:8000:0000:0000:0000:0000
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1000000000000000:0000000000000000:0000000000000000:0000000000000000:0000000000000000

Last address assignable: 
  (Compressed)  2001:0:fedc:bfff:ffff:ffff:ffff:ffff
    (Exploded)  2001:0000:fedc:bfff:ffff:ffff:ffff:ffff
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1011111111111111:1111111111111111:1111111111111111:1111111111111111:1111111111111111

Total number of addresses: 302231454903657293676544 (2^78 or 3e+23)



First address assignable (excluding "subnet-router anycast" of RFC 2526):
  (Compressed)  2001:0:fedc:8000::1
    (Exploded)  2001:0000:fedc:8000:0000:0000:0000:0001
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1000000000000000:0000000000000000:0000000000000000:0000000000000000:0000000000000001

Total number of addresses (Excluding "reserved" addresses): 302231454903657293676543 (3e+23)


This prefix can contain one of the following:
   * 16384 (2^14 or 1.6e+04) subnets /64
   * 64 (2^6 or 64) subnets /56

# ./ip6calc.py 2001:0000:fedc:abcd::/64
Address:
  (Compressed)  2001:0:fedc:abcd::/64
    (Exploded)  2001:0000:fedc:abcd:0000:0000:0000:0000/64
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1010101111001101:0000000000000000:0000000000000000:0000000000000000:0000000000000000/64

Address type is: global unicast

Netmask:
  (Compressed)  ffff:ffff:ffff:ffff::
    (Exploded)  ffff:ffff:ffff:ffff:0000:0000:0000:0000
      (Binary)  1111111111111111:1111111111111111:1111111111111111:1111111111111111:0000000000000000:0000000000000000:0000000000000000:0000000000000000

First address assignable: 
  (Compressed)  2001:0:fedc:abcd::
    (Exploded)  2001:0000:fedc:abcd:0000:0000:0000:0000
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1010101111001101:0000000000000000:0000000000000000:0000000000000000:0000000000000000

Last address assignable: 
  (Compressed)  2001:0:fedc:abcd:ffff:ffff:ffff:ffff
    (Exploded)  2001:0000:fedc:abcd:ffff:ffff:ffff:ffff
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1010101111001101:1111111111111111:1111111111111111:1111111111111111:1111111111111111

Total number of addresses: 18446744073709551616 (2^64 or 1.8e+19)



First address assignable (excluding "subnet-router anycast" of RFC 2526):
  (Compressed)  2001:0:fedc:abcd::1
    (Exploded)  2001:0000:fedc:abcd:0000:0000:0000:0001
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1010101111001101:0000000000000000:0000000000000000:0000000000000000:0000000000000001

Last address assignable (Excluding "reserved" addresses of RFC 2526): 
  (Compressed)  2001:0:fedc:abcd:ffff:ffff:ffff:ff7f
    (Exploded)  2001:0000:fedc:abcd:ffff:ffff:ffff:ff7f
      (Binary)  0010000000000001:0000000000000000:1111111011011100:1010101111001101:1111111111111111:1111111111111111:1111111111111111:1111111101111111

Total number of addresses (Excluding "reserved" addresses): 18446744073709551487 (1.8e+19)