2.4.7.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address

2.4.7.0

Broadcast Address

2.4.7.127

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

2.4.7.1

Last Usable IP

2.4.7.126

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (2.4.7.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 2.4.7.127 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	2.4.7.0/25
Network Address	2.4.7.0
Broadcast Address	2.4.7.127
Subnet Mask	255.255.255.128
Wildcard Mask	0.0.0.127
Prefix Length	/25
IP Address Class	Class A
Total IP Addresses	128
Usable Host Addresses	126
First Usable IP	2.4.7.1
Last Usable IP	2.4.7.126
Network (Hex)	0x02040700
Broadcast (Hex)	0x0204077F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00000010.00000100.00000111 00000010.00000100.00000111.00000000

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 2.4.7.0/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	2.4.7.0/26	2.4.7.0	2.4.7.1	2.4.7.62	2.4.7.63	62
2	2.4.7.64/26	2.4.7.64	2.4.7.65	2.4.7.126	2.4.7.127	62

Split 2.4.7.0/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	2.4.7.0/27	2.4.7.0	2.4.7.1	2.4.7.30	2.4.7.31	30
2	2.4.7.32/27	2.4.7.32	2.4.7.33	2.4.7.62	2.4.7.63	30
3	2.4.7.64/27	2.4.7.64	2.4.7.65	2.4.7.94	2.4.7.95	30
4	2.4.7.96/27	2.4.7.96	2.4.7.97	2.4.7.126	2.4.7.127	30

Split 2.4.7.0/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	2.4.7.0/28	2.4.7.0	2.4.7.1	2.4.7.14	2.4.7.15	14
2	2.4.7.16/28	2.4.7.16	2.4.7.17	2.4.7.30	2.4.7.31	14
3	2.4.7.32/28	2.4.7.32	2.4.7.33	2.4.7.46	2.4.7.47	14
4	2.4.7.48/28	2.4.7.48	2.4.7.49	2.4.7.62	2.4.7.63	14
5	2.4.7.64/28	2.4.7.64	2.4.7.65	2.4.7.78	2.4.7.79	14
6	2.4.7.80/28	2.4.7.80	2.4.7.81	2.4.7.94	2.4.7.95	14
7	2.4.7.96/28	2.4.7.96	2.4.7.97	2.4.7.110	2.4.7.111	14
8	2.4.7.112/28	2.4.7.112	2.4.7.113	2.4.7.126	2.4.7.127	14

Split 2.4.7.0/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	2.4.7.0/29	2.4.7.0	2.4.7.1	2.4.7.6	2.4.7.7	6
2	2.4.7.8/29	2.4.7.8	2.4.7.9	2.4.7.14	2.4.7.15	6
3	2.4.7.16/29	2.4.7.16	2.4.7.17	2.4.7.22	2.4.7.23	6
4	2.4.7.24/29	2.4.7.24	2.4.7.25	2.4.7.30	2.4.7.31	6
5	2.4.7.32/29	2.4.7.32	2.4.7.33	2.4.7.38	2.4.7.39	6
6	2.4.7.40/29	2.4.7.40	2.4.7.41	2.4.7.46	2.4.7.47	6
7	2.4.7.48/29	2.4.7.48	2.4.7.49	2.4.7.54	2.4.7.55	6
8	2.4.7.56/29	2.4.7.56	2.4.7.57	2.4.7.62	2.4.7.63	6
9	2.4.7.64/29	2.4.7.64	2.4.7.65	2.4.7.70	2.4.7.71	6
10	2.4.7.72/29	2.4.7.72	2.4.7.73	2.4.7.78	2.4.7.79	6
11	2.4.7.80/29	2.4.7.80	2.4.7.81	2.4.7.86	2.4.7.87	6
12	2.4.7.88/29	2.4.7.88	2.4.7.89	2.4.7.94	2.4.7.95	6
13	2.4.7.96/29	2.4.7.96	2.4.7.97	2.4.7.102	2.4.7.103	6
14	2.4.7.104/29	2.4.7.104	2.4.7.105	2.4.7.110	2.4.7.111	6
15	2.4.7.112/29	2.4.7.112	2.4.7.113	2.4.7.118	2.4.7.119	6
16	2.4.7.120/29	2.4.7.120	2.4.7.121	2.4.7.126	2.4.7.127	6

IP Address Sample

Showing first 16 of 128 total IPs.

2.4.7.0 net

2.4.7.1

2.4.7.2

2.4.7.3

2.4.7.4

2.4.7.5

2.4.7.6

2.4.7.7

2.4.7.8

2.4.7.9

2.4.7.10

2.4.7.11

2.4.7.12

2.4.7.13

2.4.7.14

2.4.7.15

… 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 2.4.7.0/24 Sibling /25 block 2.4.7.128/25

Adjacent Prefix Sizes

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