Is 255.255.255.0 the same as 24?
Asked by: Dimitri Nikolaus | Last update: January 28, 2026Score: 4.1/5 (33 votes)
Yes, 255.255.255.0 is the dotted-decimal equivalent of /24 in CIDR notation, meaning the first 24 bits of an IP address are used for the network portion, leaving 8 bits for hosts, which results in 256 total IP addresses in that subnet (2⁸).
Is 255.255.255.0 equal to 24?
The subnet mask 255.255. 255.0 is 11111111.11111111. 11111111.00000000 in binary. This adds up to 24 consecutive ones, or /24 (pronounced “slash twenty-four”).
How many IP addresses are in a 24?
As a result, even though there are 256 possible values for an 8-bit number, there are only 254 allowed host addresses in a /24 subnet.
What does 192.168 1.1 24 mean?
A CIDR address looks something like this: 192.168. 1.1/24. The part before the slash is the IP address, and the part after the slash (24 in this case) is the subnet mask represented in CIDR notation.
What does 192.168 0.0 24 mean?
The /24 signifies the number of bits used for the network portion of the address. Specifically: IPv4 addresses are 32 bits in total. The /24 means that the first 24 bits are used for the network address.
IPv4 - Why is 255.255.255.0 the most common subnet mask?
What does network 24 cover?
The notation /24 is part of CIDR (Classless Inter-Domain Routing) and represents how many bits of the IP address are reserved for the network portion. In this case, 24 out of 32 bits are used for the network, leaving 8 bits for hosts.
What means 24 after IP?
The /24 means 24 bits out of the 32 bits will be used by the network. The remaining 8 bits will be used by the host. To determine the total amount of addresses we can use the formula 28 = 256. In a standard network the first address and last address is reserved.
What is the difference between a subnet and a VLAN?
VLAN: VLAN utilizes MAC addresses to identify devices and operates at the OSI model's data connection layer (layer 2). Subnet: Subnet utilizes IP addresses to identify devices and operates at layer 3 of the OSI model, which is the network layer.
What IP address starts with 24?
A /24 refers to a subnet of 256 IP addresses assigned to the customers company by ARIN. A /24 is the smallest network that Internet Carriers will exchange. Silverline can announces any number of /24s as necessary for the customer. A /24 address is also known as Class C Internet address space.
How many IP addresses are in a 24 block?
Formula: Total IPs = 2^(32 – subnet prefix) Total IPs = 2^(32 – 24) = 2^8 = 256.
How many 24 networks could you have in that subnet?
Class C IP Addresses
255.255 , with a default subnet mask of 255.255. 255.0 (or /24 in CIDR). Class C translates to 2,097,152 (221) networks and 254 (28-2) usable addresses per network.
How many IP addresses are in 10.0 0.0 24?
An IP address in CIDR notation looks like this: 10.0. 0.0/24 with the CIDR part being the /24 . So what does that mean? Well it represents the 256 addresses 10.0.
What is 255.255 255.0 in subnet?
A subnet mask of 255.255. 255.0 means that the device can connect with any other device on the network with an IP address containing identical values in the first three octets. 255 means that the value of that octet must be identical.
How many users are possible from the subnet mask of 255.255.255.224 of Class C IP?
So five bits can hold values 0 through 31 (1+2+4+8+16=31). The last address in a range is the broadcast address and can't be used to assign to a node, and the first is typically used to talk about the entire subnet and typically should not be used to assign to a node. So you have 30 useable addresses.
What are the three types of VLANs?
Key Takeaways
- Default VLAN is only for initial setup—move user ports away.
- Data VLAN carries everyday traffic; split large groups into separate IDs.
- Voice VLAN ensures call quality via QoS tagging.
- Management VLAN protects switches and routers from user subnet attacks.
Can you have a VLAN without a subnet?
No, VLANs don't require different subnets. Different subnets require different subnet addresses if they ever need to be able to route and/or talk to each other) and by extension if one VLAN wants to talk to a different VLAN it must use different addresses so we can make a routing decision to the right place.
What's the difference between a subnet and a subnet mask?
A subnet mask is a number that distinguishes the network address and the host address within an IP address. A subnet is a smaller network within a network that requires a subnet mask. Subnetting is the process of dividing a network into two or more subnets.
Is 255.255 255.0 a 24?
In contrast, CIDR (Classless Inter-Domain Routing) notation represents the subnet mask with a slash followed by the number of bits in the network portion, such as /24 for a subnet mask of 255.255. 255.0.
How many IP's are in a 24?
The /24 subnet will be assigned to the Internet Access Service used by your equipment. In case of multiple services, you will need to select on which one you will be use it. Out of all 256 IPs in this /24 subnet, only 253 can be used. The first IP address from this subnet (ex: .
What does 24 mean in 192.168 1.0 24?
The /24 after 192.168.1.100 (written as 192.168.1.100/24) means it uses a subnet mask where the first 24 bits define the network, leaving the last 8 bits for hosts, which is equivalent to the traditional mask 255.255.255.0, creating a local network (subnet) for devices from 192.168.1.0 to 192.168.1.255. This CIDR notation simplifies network configuration by combining the IP address and its subnet mask into one short form, defining the network size and range.
Why is subnet mask 24?
The '/24' subnet mask is mostly used because most of the networks take the address 255.255. 255.0 as the mask and the total of 1's in the address is 24, its significance is that it makes it easier to configure networks.
What is the difference between IPv4 and IPv6?
IPv4 supports one-to-one (unicast), one-to-all (broadcast), and one-to-many (multicast) addressing with multi-packet routing. Alternately, IPv6 supports unicast, multicast, and anycast addressing with multi-packet routing.
What is the 24 block in IPv4?
/24 – The Internet's Smallest Block. IPv4. GLOBAL's marketplace and auction platform filters scores of open auctions in several ways. One is by block size where the smallest block is a /24 (256 IPv4 addresses).