1.179.18.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address

1.179.18.0

Broadcast Address

1.179.18.127

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

1.179.18.1

Last Usable IP

1.179.18.126

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (1.179.18.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 1.179.18.127 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	1.179.18.0/25
Network Address	1.179.18.0
Broadcast Address	1.179.18.127
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	1.179.18.1
Last Usable IP	1.179.18.126
Network (Hex)	0x01B31200
Broadcast (Hex)	0x01B3127F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00000001.10110011.00010010 00000001.10110011.00010010.00000000

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 1.179.18.0/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	1.179.18.0/26	1.179.18.0	1.179.18.1	1.179.18.62	1.179.18.63	62
2	1.179.18.64/26	1.179.18.64	1.179.18.65	1.179.18.126	1.179.18.127	62

Split 1.179.18.0/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	1.179.18.0/27	1.179.18.0	1.179.18.1	1.179.18.30	1.179.18.31	30
2	1.179.18.32/27	1.179.18.32	1.179.18.33	1.179.18.62	1.179.18.63	30
3	1.179.18.64/27	1.179.18.64	1.179.18.65	1.179.18.94	1.179.18.95	30
4	1.179.18.96/27	1.179.18.96	1.179.18.97	1.179.18.126	1.179.18.127	30

Split 1.179.18.0/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	1.179.18.0/28	1.179.18.0	1.179.18.1	1.179.18.14	1.179.18.15	14
2	1.179.18.16/28	1.179.18.16	1.179.18.17	1.179.18.30	1.179.18.31	14
3	1.179.18.32/28	1.179.18.32	1.179.18.33	1.179.18.46	1.179.18.47	14
4	1.179.18.48/28	1.179.18.48	1.179.18.49	1.179.18.62	1.179.18.63	14
5	1.179.18.64/28	1.179.18.64	1.179.18.65	1.179.18.78	1.179.18.79	14
6	1.179.18.80/28	1.179.18.80	1.179.18.81	1.179.18.94	1.179.18.95	14
7	1.179.18.96/28	1.179.18.96	1.179.18.97	1.179.18.110	1.179.18.111	14
8	1.179.18.112/28	1.179.18.112	1.179.18.113	1.179.18.126	1.179.18.127	14

Split 1.179.18.0/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	1.179.18.0/29	1.179.18.0	1.179.18.1	1.179.18.6	1.179.18.7	6
2	1.179.18.8/29	1.179.18.8	1.179.18.9	1.179.18.14	1.179.18.15	6
3	1.179.18.16/29	1.179.18.16	1.179.18.17	1.179.18.22	1.179.18.23	6
4	1.179.18.24/29	1.179.18.24	1.179.18.25	1.179.18.30	1.179.18.31	6
5	1.179.18.32/29	1.179.18.32	1.179.18.33	1.179.18.38	1.179.18.39	6
6	1.179.18.40/29	1.179.18.40	1.179.18.41	1.179.18.46	1.179.18.47	6
7	1.179.18.48/29	1.179.18.48	1.179.18.49	1.179.18.54	1.179.18.55	6
8	1.179.18.56/29	1.179.18.56	1.179.18.57	1.179.18.62	1.179.18.63	6
9	1.179.18.64/29	1.179.18.64	1.179.18.65	1.179.18.70	1.179.18.71	6
10	1.179.18.72/29	1.179.18.72	1.179.18.73	1.179.18.78	1.179.18.79	6
11	1.179.18.80/29	1.179.18.80	1.179.18.81	1.179.18.86	1.179.18.87	6
12	1.179.18.88/29	1.179.18.88	1.179.18.89	1.179.18.94	1.179.18.95	6
13	1.179.18.96/29	1.179.18.96	1.179.18.97	1.179.18.102	1.179.18.103	6
14	1.179.18.104/29	1.179.18.104	1.179.18.105	1.179.18.110	1.179.18.111	6
15	1.179.18.112/29	1.179.18.112	1.179.18.113	1.179.18.118	1.179.18.119	6
16	1.179.18.120/29	1.179.18.120	1.179.18.121	1.179.18.126	1.179.18.127	6

IP Address Sample

Showing first 16 of 128 total IPs.

1.179.18.0 net

1.179.18.1

1.179.18.2

1.179.18.3

1.179.18.4

1.179.18.5

1.179.18.6

1.179.18.7

1.179.18.8

1.179.18.9

1.179.18.10

1.179.18.11

1.179.18.12

1.179.18.13

1.179.18.14

1.179.18.15

… 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 1.179.18.0/24 Sibling /25 block 1.179.18.128/25

Adjacent Prefix Sizes

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