IP Subnet

51.101.0.0/16

66K addresses  ·  Unknown Organization  ·  ARIN

Parent Range All IP Ranges

CIDR Block

51.101.0.0/16

Prefix Length

/16

Total IPs

66K

Network Addr

51.101.0.0

Broadcast

51.101.255.255

Subnet Mask

255.255.0.0

Child /24 Ranges

Showing 256 entries

Showing 256 entries for 51.101.0.0/16

Subnet Details

CIDR Notation 51.101.0.0/16
Prefix Length /16
Subnet Mask 255.255.0.0
Network Address 51.101.0.0
Broadcast Address 51.101.255.255
First Usable IP 51.101.0.1
Last Usable IP 51.101.255.254
Total Addresses 65,536
Usable Addresses 65,534

Binary Representation

51

00110011

101

01100101

0

00000000

0

00000000

00110011.01100101.00000000.00000000/16

Allocation Information

Registry ARIN
Organization Unknown Organization
Status Allocated
Allocation Date 1995-01-01
Last Updated 2024-03-15
Country United States

BGP Routing

BGP Origin AS12345
BGP Peers 3 upstream providers
Route Status Active
Last Seen 2 minutes ago

API Endpoints

https://api.hostinfo.com/v2/ip/subnet?range=51.101.0.0%2F16
https://api.hostinfo.com/v2/ip/subnet/children?range=51.101.0.0%2F16
https://api.hostinfo.com/v2/ip/subnet/ips?range=51.101.0.0%2F16

Code Example

curl -s -H "Authorization: Bearer YOUR_TOKEN" \
  https://api.hostinfo.com/v2/ip/subnet?range=51.101.0.0%2F16

# Response
{
  "range": "51.101.0.0/16",
  "prefix": 16,
  "address_count": 65536,
  "allocation": {
    "registry": "ARIN",
    "status": "allocated"
  }
}

Subnet Information

CIDR 51.101.0.0/16
Prefix /16
Addresses 66K
Type /16 Block
Registry ARIN

Navigate

51.0.0.0/8 All IP Ranges

Sibling Ranges

51.97.0.0/16 51.98.0.0/16 51.99.0.0/16 51.100.0.0/16 51.102.0.0/16 51.103.0.0/16 51.104.0.0/16 51.105.0.0/16

IP Subnet API

Query this subnet programmatically. Get child ranges, IP details, and routing data.

/v2/ip/subnet?range=51.101.0.0%2F16 View API Docs