IP subnetting

IPv4 subnetting calculator

IPv4 subnetting questions

Videos

CCENT Subnetting Part 1 of 2

CCENT Subnetting Part 2 of 2

Solve a VLSM subnet problem Cisco CCNA

Subnetting made easy subnet 101 Only 16 minutes to become Subnet Guru!

IP Subnetting – Cheatsheet

Quick Subnetting Review

Subnetting Table 
Network Bits Subnet Mask Number of Subnets Number of Hosts
 /8  255.0.0.0  0  16777214
 /9  255.128.0.0  2 (0)  8388606
 /10  255.192.0.0  4 (2)  4194302
 /11  255.224.0.0  8 (6) 2097150
 /12  255.240.0.0  16 (14)  1048574
 /13  255.248.0.0  32 (30)  524286
 /14  255.252.0.0  64 (62)  262142
 /15  255.254.0.0  128 (126)  131070
 /16  255.255.0.0  256 (254)  65534
 /17  255.255.128.0  512 (510)  32766
 /18  255.255.192.0  1024 (1022)  16382
 /19  255.255.224.0  2048 (2046)  8190
 /20  255.255.240.0  4096 (4094)  4094
 /21  255.255.248.0  8192 (8190)  2046
 /22  255.255.252.0  16384 (16382)  1022
 /23  255.255.254.0  32768 (32766)  510
 /24  255.255.255.0  65536 (65534)  254
 /25  255.255.255.128  131072 (131070)  126
 /26  255.255.255.192 262144 (262142)  62
 /27  255.255.255.224  524288 (52486)  30
 /28  255.255.255.240  1048576 (1048574)  14
 /29  255.255.255.248  2097152 (2097150)  6
 /30  255.255.255.252  4194304 (4194302)  2

a

Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *