| Subnet mask
| Subnet mask bits
| Len
| Available ip-ranges (first=network, last=broadcast)
|
|
|
|
|
|
| 255.255.255.0
| 11111111.11111111.11111111.00000000
| 24
| 0-255
|
|
|
|
|
|
| 255.255.255.128
| 11111111.11111111.11111111.10000000
| 25
| 0-127, 128-255
|
|
|
|
|
|
| 255.255.255.192
| 11111111.11111111.11111111.11000000
| 26
| 0-63, 64-127, 128-191, 192-255
|
|
|
|
|
|
| 255.255.255.224
| 11111111.11111111.11111111.11100000
| 27
| 0-31, 32-63, 64-95, 96-127, 128-159, 160-191, 192-223, 224-255
|
|
|
|
|
|
| 255.255.255.240
| 11111111.11111111.11111111.11110000
| 28
| 0-15, 16-31, 32-47, 48-63, 64-79, 80-95, 96-111, 112-127, 128-143,
|
|
|
|
| 144-159, 160-175, 176-191, 192-207, 208-223, 224-239, 240-255
|
|
|
|
|
|
| 255.255.255.248
| 11111111.11111111.11111111.11111000
| 29
| 0-7, 8-15, 16-23, 24-31, 32-39, 40-47, 48-55, 56-63, 64-71, 72-79,
|
|
|
|
| 80-87, 88-95, 96-103, 104-111, 112-119, 120-127, 128-135, 136-143,
|
|
|
|
| 144-151, 152-159, 160-167, 168-175, 176-183, 184-191, 192-199,
|
|
|
|
| 200-207, 208-215, 216-223, 224-231, 232-239, 240-247, 248-255
|
|
|
|
|
|
| 255.255.255.252
| 11111111.11111111.11111111.11111100
| 30
| 0-3, 4-7, 8-11, 12-15, 16-19, 20-23, 24-27, 28-31, 32-35, 36-39,
|
|
|
|
| 40-43, 44-47, 48-51, 52-55, 56-59, 60-63, 64-67, 68-71, 72-75,
|
|
|
|
| 76-79, 80-83, 84-87, 88-91, 92-95, 96-99, 100-103, 104-107,
|
|
|
|
| 108-111, 112-115, 116-119, 120-123, 124-127, 128-131, 132-135,
|
|
|
|
| 136-139, 140-143, 144-147, 148-151, 152-155, 156-159, 160-163,
|
|
|
|
| 164-167, 168-171, 172-175, 176-179, 180-183, 184-187, 188-191,
|
|
|
|
| 192-195, 196-199, 200-203, 204-207, 208-211, 212-215, 216-219,
|
|
|
|
| 220-223, 224-227, 228-231, 232-235, 236-239, 240-243, 244-247,
|
|
|
|
| 248-251, 252-255
|
|
|
|
|
|
| 255.255.255.254
| 11111111.11111111.11111111.11111110
| 31
|
|
|
|
|
|
|
| 255.255.255.255
| 11111111.11111111.11111111.11111111
| 32
|
|