154.0.0.0/7

Public

Class B — /7 prefix — 33,554,430 usable hosts

Network Address

154.0.0.0

Broadcast Address

155.255.255.255

Subnet Mask

254.0.0.0

Usable Hosts

33,554,430

First Usable IP

154.0.0.1

Last Usable IP

155.255.255.254

Total IPs

33,554,432

Prefix Length

Network address — the base address of the block (154.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 155.255.255.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 33,554,430 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 254.0.0.0 is the dotted-decimal equivalent of /7. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	154.0.0.0/7
Network Address	154.0.0.0
Broadcast Address	155.255.255.255
Subnet Mask	254.0.0.0
Wildcard Mask	1.255.255.255
Prefix Length	/7
IP Address Class	Class B
Total IP Addresses	33,554,432
Usable Host Addresses	33,554,430
First Usable IP	154.0.0.1
Last Usable IP	155.255.255.254
Network (Hex)	0x9A000000
Broadcast (Hex)	0x9BFFFFFF
Address Type	Public / Globally Routable

Binary Representation

Network Address

100110 10011010.00000000.00000000.00000000

Subnet Mask

11111110.00000000.00000000.00000000

The first 7 bits (1s in the mask) identify the network. The remaining 25 bits identify hosts within the network.

Split into Equal Subnets

Split 154.0.0.0/7 into 2 equal /8 subnets (16,777,214 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	154.0.0.0/8	154.0.0.0	154.0.0.1	154.255.255.254	154.255.255.255	16,777,214
2	155.0.0.0/8	155.0.0.0	155.0.0.1	155.255.255.254	155.255.255.255	16,777,214

Split 154.0.0.0/7 into 4 equal /9 subnets (8,388,606 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	154.0.0.0/9	154.0.0.0	154.0.0.1	154.127.255.254	154.127.255.255	8,388,606
2	154.128.0.0/9	154.128.0.0	154.128.0.1	154.255.255.254	154.255.255.255	8,388,606
3	155.0.0.0/9	155.0.0.0	155.0.0.1	155.127.255.254	155.127.255.255	8,388,606
4	155.128.0.0/9	155.128.0.0	155.128.0.1	155.255.255.254	155.255.255.255	8,388,606

Split 154.0.0.0/7 into 8 equal /10 subnets (4,194,302 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	154.0.0.0/10	154.0.0.0	154.0.0.1	154.63.255.254	154.63.255.255	4,194,302
2	154.64.0.0/10	154.64.0.0	154.64.0.1	154.127.255.254	154.127.255.255	4,194,302
3	154.128.0.0/10	154.128.0.0	154.128.0.1	154.191.255.254	154.191.255.255	4,194,302
4	154.192.0.0/10	154.192.0.0	154.192.0.1	154.255.255.254	154.255.255.255	4,194,302
5	155.0.0.0/10	155.0.0.0	155.0.0.1	155.63.255.254	155.63.255.255	4,194,302
6	155.64.0.0/10	155.64.0.0	155.64.0.1	155.127.255.254	155.127.255.255	4,194,302
7	155.128.0.0/10	155.128.0.0	155.128.0.1	155.191.255.254	155.191.255.255	4,194,302
8	155.192.0.0/10	155.192.0.0	155.192.0.1	155.255.255.254	155.255.255.255	4,194,302

Split 154.0.0.0/7 into 16 equal /11 subnets (2,097,150 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	154.0.0.0/11	154.0.0.0	154.0.0.1	154.31.255.254	154.31.255.255	2,097,150
2	154.32.0.0/11	154.32.0.0	154.32.0.1	154.63.255.254	154.63.255.255	2,097,150
3	154.64.0.0/11	154.64.0.0	154.64.0.1	154.95.255.254	154.95.255.255	2,097,150
4	154.96.0.0/11	154.96.0.0	154.96.0.1	154.127.255.254	154.127.255.255	2,097,150
5	154.128.0.0/11	154.128.0.0	154.128.0.1	154.159.255.254	154.159.255.255	2,097,150
6	154.160.0.0/11	154.160.0.0	154.160.0.1	154.191.255.254	154.191.255.255	2,097,150
7	154.192.0.0/11	154.192.0.0	154.192.0.1	154.223.255.254	154.223.255.255	2,097,150
8	154.224.0.0/11	154.224.0.0	154.224.0.1	154.255.255.254	154.255.255.255	2,097,150
9	155.0.0.0/11	155.0.0.0	155.0.0.1	155.31.255.254	155.31.255.255	2,097,150
10	155.32.0.0/11	155.32.0.0	155.32.0.1	155.63.255.254	155.63.255.255	2,097,150
11	155.64.0.0/11	155.64.0.0	155.64.0.1	155.95.255.254	155.95.255.255	2,097,150
12	155.96.0.0/11	155.96.0.0	155.96.0.1	155.127.255.254	155.127.255.255	2,097,150
13	155.128.0.0/11	155.128.0.0	155.128.0.1	155.159.255.254	155.159.255.255	2,097,150
14	155.160.0.0/11	155.160.0.0	155.160.0.1	155.191.255.254	155.191.255.255	2,097,150
15	155.192.0.0/11	155.192.0.0	155.192.0.1	155.223.255.254	155.223.255.255	2,097,150
16	155.224.0.0/11	155.224.0.0	155.224.0.1	155.255.255.254	155.255.255.255	2,097,150

/7 Subnet Reference

Total IPs 33,554,432

Usable Hosts 33,554,430

Subnet Mask 254.0.0.0

Wildcard 1.255.255.255

Full /7 reference →

Related Ranges

Parent /6 block 152.0.0.0/6 Sibling /7 block 152.0.0.0/7

Adjacent Prefix Sizes

/5 134,217,726 hosts /6 67,108,862 hosts /7 33,554,430 hosts /8 16,777,214 hosts /9 8,388,606 hosts