39.166.52.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address

39.166.52.0

Broadcast Address

39.166.52.127

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

39.166.52.1

Last Usable IP

39.166.52.126

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (39.166.52.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 39.166.52.127 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	39.166.52.0/25
Network Address	39.166.52.0
Broadcast Address	39.166.52.127
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	39.166.52.1
Last Usable IP	39.166.52.126
Network (Hex)	0x27A63400
Broadcast (Hex)	0x27A6347F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00100111.10100110.00110100 00100111.10100110.00110100.00000000

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 39.166.52.0/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.166.52.0/26	39.166.52.0	39.166.52.1	39.166.52.62	39.166.52.63	62
2	39.166.52.64/26	39.166.52.64	39.166.52.65	39.166.52.126	39.166.52.127	62

Split 39.166.52.0/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.166.52.0/27	39.166.52.0	39.166.52.1	39.166.52.30	39.166.52.31	30
2	39.166.52.32/27	39.166.52.32	39.166.52.33	39.166.52.62	39.166.52.63	30
3	39.166.52.64/27	39.166.52.64	39.166.52.65	39.166.52.94	39.166.52.95	30
4	39.166.52.96/27	39.166.52.96	39.166.52.97	39.166.52.126	39.166.52.127	30

Split 39.166.52.0/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.166.52.0/28	39.166.52.0	39.166.52.1	39.166.52.14	39.166.52.15	14
2	39.166.52.16/28	39.166.52.16	39.166.52.17	39.166.52.30	39.166.52.31	14
3	39.166.52.32/28	39.166.52.32	39.166.52.33	39.166.52.46	39.166.52.47	14
4	39.166.52.48/28	39.166.52.48	39.166.52.49	39.166.52.62	39.166.52.63	14
5	39.166.52.64/28	39.166.52.64	39.166.52.65	39.166.52.78	39.166.52.79	14
6	39.166.52.80/28	39.166.52.80	39.166.52.81	39.166.52.94	39.166.52.95	14
7	39.166.52.96/28	39.166.52.96	39.166.52.97	39.166.52.110	39.166.52.111	14
8	39.166.52.112/28	39.166.52.112	39.166.52.113	39.166.52.126	39.166.52.127	14

Split 39.166.52.0/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.166.52.0/29	39.166.52.0	39.166.52.1	39.166.52.6	39.166.52.7	6
2	39.166.52.8/29	39.166.52.8	39.166.52.9	39.166.52.14	39.166.52.15	6
3	39.166.52.16/29	39.166.52.16	39.166.52.17	39.166.52.22	39.166.52.23	6
4	39.166.52.24/29	39.166.52.24	39.166.52.25	39.166.52.30	39.166.52.31	6
5	39.166.52.32/29	39.166.52.32	39.166.52.33	39.166.52.38	39.166.52.39	6
6	39.166.52.40/29	39.166.52.40	39.166.52.41	39.166.52.46	39.166.52.47	6
7	39.166.52.48/29	39.166.52.48	39.166.52.49	39.166.52.54	39.166.52.55	6
8	39.166.52.56/29	39.166.52.56	39.166.52.57	39.166.52.62	39.166.52.63	6
9	39.166.52.64/29	39.166.52.64	39.166.52.65	39.166.52.70	39.166.52.71	6
10	39.166.52.72/29	39.166.52.72	39.166.52.73	39.166.52.78	39.166.52.79	6
11	39.166.52.80/29	39.166.52.80	39.166.52.81	39.166.52.86	39.166.52.87	6
12	39.166.52.88/29	39.166.52.88	39.166.52.89	39.166.52.94	39.166.52.95	6
13	39.166.52.96/29	39.166.52.96	39.166.52.97	39.166.52.102	39.166.52.103	6
14	39.166.52.104/29	39.166.52.104	39.166.52.105	39.166.52.110	39.166.52.111	6
15	39.166.52.112/29	39.166.52.112	39.166.52.113	39.166.52.118	39.166.52.119	6
16	39.166.52.120/29	39.166.52.120	39.166.52.121	39.166.52.126	39.166.52.127	6

IP Address Sample

Showing first 16 of 128 total IPs.

39.166.52.0 net

39.166.52.1

39.166.52.2

39.166.52.3

39.166.52.4

39.166.52.5

39.166.52.6

39.166.52.7

39.166.52.8

39.166.52.9

39.166.52.10

39.166.52.11

39.166.52.12

39.166.52.13

39.166.52.14

39.166.52.15

… 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 39.166.52.0/24 Sibling /25 block 39.166.52.128/25

Adjacent Prefix Sizes

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