128.190.82.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address

128.190.82.64

Broadcast Address

128.190.82.95

Subnet Mask

255.255.255.224

Usable Hosts

First Usable IP

128.190.82.65

Last Usable IP

128.190.82.94

Total IPs

Prefix Length

/27

Network address — the base address of the block (128.190.82.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 128.190.82.95 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	128.190.82.64/27
Network Address	128.190.82.64
Broadcast Address	128.190.82.95
Subnet Mask	255.255.255.224
Wildcard Mask	0.0.0.31
Prefix Length	/27
IP Address Class	Class B
Total IP Addresses	32
Usable Host Addresses	30
First Usable IP	128.190.82.65
Last Usable IP	128.190.82.94
Network (Hex)	0x80BE5240
Broadcast (Hex)	0x80BE525F
Address Type	Public / Globally Routable

Binary Representation

Network Address

10000000.10111110.01010010 10000000.10111110.01010010.01000000

Subnet Mask

11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 128.190.82.64/27 into 2 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.190.82.64/28	128.190.82.64	128.190.82.65	128.190.82.78	128.190.82.79	14
2	128.190.82.80/28	128.190.82.80	128.190.82.81	128.190.82.94	128.190.82.95	14

Split 128.190.82.64/27 into 4 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.190.82.64/29	128.190.82.64	128.190.82.65	128.190.82.70	128.190.82.71	6
2	128.190.82.72/29	128.190.82.72	128.190.82.73	128.190.82.78	128.190.82.79	6
3	128.190.82.80/29	128.190.82.80	128.190.82.81	128.190.82.86	128.190.82.87	6
4	128.190.82.88/29	128.190.82.88	128.190.82.89	128.190.82.94	128.190.82.95	6

Split 128.190.82.64/27 into 8 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.190.82.64/30	128.190.82.64	128.190.82.65	128.190.82.66	128.190.82.67	2
2	128.190.82.68/30	128.190.82.68	128.190.82.69	128.190.82.70	128.190.82.71	2
3	128.190.82.72/30	128.190.82.72	128.190.82.73	128.190.82.74	128.190.82.75	2
4	128.190.82.76/30	128.190.82.76	128.190.82.77	128.190.82.78	128.190.82.79	2
5	128.190.82.80/30	128.190.82.80	128.190.82.81	128.190.82.82	128.190.82.83	2
6	128.190.82.84/30	128.190.82.84	128.190.82.85	128.190.82.86	128.190.82.87	2
7	128.190.82.88/30	128.190.82.88	128.190.82.89	128.190.82.90	128.190.82.91	2
8	128.190.82.92/30	128.190.82.92	128.190.82.93	128.190.82.94	128.190.82.95	2

IP Address Sample

Showing first 16 of 32 total IPs.

128.190.82.64 net

128.190.82.65

128.190.82.66

128.190.82.67

128.190.82.68

128.190.82.69

128.190.82.70

128.190.82.71

128.190.82.72

128.190.82.73

128.190.82.74

128.190.82.75

128.190.82.76

128.190.82.77

128.190.82.78

128.190.82.79

… 16 more IPs …

/27 Subnet Reference

Total IPs 32

Usable Hosts 30

Subnet Mask 255.255.255.224

Wildcard 0.0.0.31

Full /27 reference →

Related Ranges

Parent /26 block 128.190.82.64/26 Sibling /27 block 128.190.82.96/27

Adjacent Prefix Sizes

/25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts /29 6 hosts