84.0.0.0/7

Public

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

Network Address

84.0.0.0

Broadcast Address

85.255.255.255

Subnet Mask

254.0.0.0

Usable Hosts

33,554,430

First Usable IP

84.0.0.1

Last Usable IP

85.255.255.254

Total IPs

33,554,432

Prefix Length

Network address — the base address of the block (84.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 85.255.255.255 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	84.0.0.0/7
Network Address	84.0.0.0
Broadcast Address	85.255.255.255
Subnet Mask	254.0.0.0
Wildcard Mask	1.255.255.255
Prefix Length	/7
IP Address Class	Class A
Total IP Addresses	33,554,432
Usable Host Addresses	33,554,430
First Usable IP	84.0.0.1
Last Usable IP	85.255.255.254
Network (Hex)	0x54000000
Broadcast (Hex)	0x55FFFFFF
Address Type	Public / Globally Routable

Binary Representation

Network Address

010101 01010100.00000000.00000000.00000000

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 84.0.0.0/7 into 2 equal /8 subnets (16,777,214 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	84.0.0.0/8	84.0.0.0	84.0.0.1	84.255.255.254	84.255.255.255	16,777,214
2	85.0.0.0/8	85.0.0.0	85.0.0.1	85.255.255.254	85.255.255.255	16,777,214

Split 84.0.0.0/7 into 4 equal /9 subnets (8,388,606 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	84.0.0.0/9	84.0.0.0	84.0.0.1	84.127.255.254	84.127.255.255	8,388,606
2	84.128.0.0/9	84.128.0.0	84.128.0.1	84.255.255.254	84.255.255.255	8,388,606
3	85.0.0.0/9	85.0.0.0	85.0.0.1	85.127.255.254	85.127.255.255	8,388,606
4	85.128.0.0/9	85.128.0.0	85.128.0.1	85.255.255.254	85.255.255.255	8,388,606

Split 84.0.0.0/7 into 8 equal /10 subnets (4,194,302 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	84.0.0.0/10	84.0.0.0	84.0.0.1	84.63.255.254	84.63.255.255	4,194,302
2	84.64.0.0/10	84.64.0.0	84.64.0.1	84.127.255.254	84.127.255.255	4,194,302
3	84.128.0.0/10	84.128.0.0	84.128.0.1	84.191.255.254	84.191.255.255	4,194,302
4	84.192.0.0/10	84.192.0.0	84.192.0.1	84.255.255.254	84.255.255.255	4,194,302
5	85.0.0.0/10	85.0.0.0	85.0.0.1	85.63.255.254	85.63.255.255	4,194,302
6	85.64.0.0/10	85.64.0.0	85.64.0.1	85.127.255.254	85.127.255.255	4,194,302
7	85.128.0.0/10	85.128.0.0	85.128.0.1	85.191.255.254	85.191.255.255	4,194,302
8	85.192.0.0/10	85.192.0.0	85.192.0.1	85.255.255.254	85.255.255.255	4,194,302

Split 84.0.0.0/7 into 16 equal /11 subnets (2,097,150 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	84.0.0.0/11	84.0.0.0	84.0.0.1	84.31.255.254	84.31.255.255	2,097,150
2	84.32.0.0/11	84.32.0.0	84.32.0.1	84.63.255.254	84.63.255.255	2,097,150
3	84.64.0.0/11	84.64.0.0	84.64.0.1	84.95.255.254	84.95.255.255	2,097,150
4	84.96.0.0/11	84.96.0.0	84.96.0.1	84.127.255.254	84.127.255.255	2,097,150
5	84.128.0.0/11	84.128.0.0	84.128.0.1	84.159.255.254	84.159.255.255	2,097,150
6	84.160.0.0/11	84.160.0.0	84.160.0.1	84.191.255.254	84.191.255.255	2,097,150
7	84.192.0.0/11	84.192.0.0	84.192.0.1	84.223.255.254	84.223.255.255	2,097,150
8	84.224.0.0/11	84.224.0.0	84.224.0.1	84.255.255.254	84.255.255.255	2,097,150
9	85.0.0.0/11	85.0.0.0	85.0.0.1	85.31.255.254	85.31.255.255	2,097,150
10	85.32.0.0/11	85.32.0.0	85.32.0.1	85.63.255.254	85.63.255.255	2,097,150
11	85.64.0.0/11	85.64.0.0	85.64.0.1	85.95.255.254	85.95.255.255	2,097,150
12	85.96.0.0/11	85.96.0.0	85.96.0.1	85.127.255.254	85.127.255.255	2,097,150
13	85.128.0.0/11	85.128.0.0	85.128.0.1	85.159.255.254	85.159.255.255	2,097,150
14	85.160.0.0/11	85.160.0.0	85.160.0.1	85.191.255.254	85.191.255.255	2,097,150
15	85.192.0.0/11	85.192.0.0	85.192.0.1	85.223.255.254	85.223.255.255	2,097,150
16	85.224.0.0/11	85.224.0.0	85.224.0.1	85.255.255.254	85.255.255.255	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 84.0.0.0/6 Sibling /7 block 86.0.0.0/7

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