201.82.3.0/25

Public

Class C — /25 prefix — 126 usable hosts

Network Address

201.82.3.0

Broadcast Address

201.82.3.127

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

201.82.3.1

Last Usable IP

201.82.3.126

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (201.82.3.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 201.82.3.127 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	201.82.3.0/25
Network Address	201.82.3.0
Broadcast Address	201.82.3.127
Subnet Mask	255.255.255.128
Wildcard Mask	0.0.0.127
Prefix Length	/25
IP Address Class	Class C
Total IP Addresses	128
Usable Host Addresses	126
First Usable IP	201.82.3.1
Last Usable IP	201.82.3.126
Network (Hex)	0xC9520300
Broadcast (Hex)	0xC952037F
Address Type	Public / Globally Routable

Binary Representation

Network Address

11001001.01010010.00000011 11001001.01010010.00000011.00000000

Subnet Mask

11111111.11111111.11111111.10000000

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

Split into Equal Subnets

Split 201.82.3.0/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	201.82.3.0/26	201.82.3.0	201.82.3.1	201.82.3.62	201.82.3.63	62
2	201.82.3.64/26	201.82.3.64	201.82.3.65	201.82.3.126	201.82.3.127	62

Split 201.82.3.0/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	201.82.3.0/27	201.82.3.0	201.82.3.1	201.82.3.30	201.82.3.31	30
2	201.82.3.32/27	201.82.3.32	201.82.3.33	201.82.3.62	201.82.3.63	30
3	201.82.3.64/27	201.82.3.64	201.82.3.65	201.82.3.94	201.82.3.95	30
4	201.82.3.96/27	201.82.3.96	201.82.3.97	201.82.3.126	201.82.3.127	30

Split 201.82.3.0/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	201.82.3.0/28	201.82.3.0	201.82.3.1	201.82.3.14	201.82.3.15	14
2	201.82.3.16/28	201.82.3.16	201.82.3.17	201.82.3.30	201.82.3.31	14
3	201.82.3.32/28	201.82.3.32	201.82.3.33	201.82.3.46	201.82.3.47	14
4	201.82.3.48/28	201.82.3.48	201.82.3.49	201.82.3.62	201.82.3.63	14
5	201.82.3.64/28	201.82.3.64	201.82.3.65	201.82.3.78	201.82.3.79	14
6	201.82.3.80/28	201.82.3.80	201.82.3.81	201.82.3.94	201.82.3.95	14
7	201.82.3.96/28	201.82.3.96	201.82.3.97	201.82.3.110	201.82.3.111	14
8	201.82.3.112/28	201.82.3.112	201.82.3.113	201.82.3.126	201.82.3.127	14

Split 201.82.3.0/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	201.82.3.0/29	201.82.3.0	201.82.3.1	201.82.3.6	201.82.3.7	6
2	201.82.3.8/29	201.82.3.8	201.82.3.9	201.82.3.14	201.82.3.15	6
3	201.82.3.16/29	201.82.3.16	201.82.3.17	201.82.3.22	201.82.3.23	6
4	201.82.3.24/29	201.82.3.24	201.82.3.25	201.82.3.30	201.82.3.31	6
5	201.82.3.32/29	201.82.3.32	201.82.3.33	201.82.3.38	201.82.3.39	6
6	201.82.3.40/29	201.82.3.40	201.82.3.41	201.82.3.46	201.82.3.47	6
7	201.82.3.48/29	201.82.3.48	201.82.3.49	201.82.3.54	201.82.3.55	6
8	201.82.3.56/29	201.82.3.56	201.82.3.57	201.82.3.62	201.82.3.63	6
9	201.82.3.64/29	201.82.3.64	201.82.3.65	201.82.3.70	201.82.3.71	6
10	201.82.3.72/29	201.82.3.72	201.82.3.73	201.82.3.78	201.82.3.79	6
11	201.82.3.80/29	201.82.3.80	201.82.3.81	201.82.3.86	201.82.3.87	6
12	201.82.3.88/29	201.82.3.88	201.82.3.89	201.82.3.94	201.82.3.95	6
13	201.82.3.96/29	201.82.3.96	201.82.3.97	201.82.3.102	201.82.3.103	6
14	201.82.3.104/29	201.82.3.104	201.82.3.105	201.82.3.110	201.82.3.111	6
15	201.82.3.112/29	201.82.3.112	201.82.3.113	201.82.3.118	201.82.3.119	6
16	201.82.3.120/29	201.82.3.120	201.82.3.121	201.82.3.126	201.82.3.127	6

IP Address Sample

Showing first 16 of 128 total IPs.

201.82.3.0 net

201.82.3.1

201.82.3.2

201.82.3.3

201.82.3.4

201.82.3.5

201.82.3.6

201.82.3.7

201.82.3.8

201.82.3.9

201.82.3.10

201.82.3.11

201.82.3.12

201.82.3.13

201.82.3.14

201.82.3.15

… 112 more IPs …

/25 Subnet Reference

Total IPs 128

Usable Hosts 126

Subnet Mask 255.255.255.128

Wildcard 0.0.0.127

Full /25 reference →

Related Ranges

Parent /24 block 201.82.3.0/24 Sibling /25 block 201.82.3.128/25

Adjacent Prefix Sizes

/23 510 hosts /24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts