192.168.0.0/16 — the home-network block
192.168.0.0/16 is the smallest of the three RFC 1918 private ranges and by far the most familiar: 65,536 addresses, 192.168.0.0 through 192.168.255.255. If you have ever typed 192.168.1.1 into a browser to reach your router, you have used it — virtually every consumer router on the planet hands out addresses from this block.
Where 10.0.0.0/8 gets subnetted into thousands of pieces by enterprises, this /16 is almost always consumed one /24 at a time: 192.168.0.0/24 here, 192.168.1.0/24 there, 256 addresses per household — more than enough.
| Network address | 192.168.0.0 |
| Subnet mask | 255.255.0.0 |
| Wildcard mask | 0.0.255.255 |
| Broadcast address | 192.168.255.255 |
| First usable | 192.168.0.1 |
| Last usable | 192.168.255.254 |
| Total addresses | 65,536 |
| Usable hosts | 65,534 |
Why consumer gear landed on 192.168.x
When RFC 1918 was written in 1996, this range sat in the old "Class C" portion of the address space — the class historically meant for small networks. Vendors building the first mass-market broadband routers in the late 1990s picked it because it matched the classful intuition, and once Linksys, Netgear and D-Link shipped with 192.168 defaults, the convention ossified.
There is no technical reason a home network could not run on 10.x — some do. But the 192.168 convention is now load-bearing folklore: manuals, support scripts and ISP helpdesks all assume it, so manufacturers keep shipping it.
Carving /24s out of the /16
A /16 holds 256 subnets of /24 size. Households typically occupy exactly one — 192.168.1.0/24 is the most common — while power users run several: a main LAN, a guest network on 192.168.2.0/24, an IoT VLAN on 192.168.30.0/24. One segment per /24 keeps broadcast domains small and firewall rules readable.
When 192.168 collides
Popularity is this block's one real downside. VPN into an office that also uses 192.168.1.0/24 and your routes overlap; the usual fix is renumbering one side to an obscure subnet like 192.168.87.0/24. The same clash appears in double-NAT setups, when an ISP's modem-router and your own router both default to the same 192.168.x range.
CIDR Calculator
Run the math on 192.168.0.0/16 — or any other block
Frequently asked questions
Is 192.168.0.0/16 private or public?
Private. It is one of the three RFC 1918 ranges, so it never routes on the public Internet — every home and small office can use it simultaneously without conflict.
How many addresses are in 192.168.0.0/16?
65,536 (2^16), spanning 192.168.0.0 to 192.168.255.255 — enough for 256 subnets of /24 size.
What is the difference between 192.168.0.0/16 and 192.168.0.0/24?
The /16 is the entire private block of 65,536 addresses. The /24 is one 256-address slice at the bottom of it — 192.168.0.0 to 192.168.0.255 — which is what a router actually assigns on a single LAN.
Can two houses both use 192.168.1.0/24?
Yes, and nearly all of them do. The ranges only conflict if the two networks get directly joined — over a VPN, for instance — because NAT otherwise keeps them invisible to each other.