Solution California
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California IP Variation Manager
Scalable IP allocation for ~100 million users | Base: 51.0.0.0/5 ("Fiveo1")
Private simulation ranges – no geo-IP guarantee
Overview: This tool allocates contiguous IPv4 subnets from 51.0.0.0/5 (51.0.0.0 – 55.255.255.255) to California regions. Estimated 100,000,000 users. Each region gets a subnet with enough capacity. Los Angeles is further divided into 16 neighborhoods with dedicated subnets.
Major California Regions & IP Ranges
Region Est. Users Allocated IP Range CIDR Capacity Sample User IP
Los Angeles Metro 68,700,000 56.0.0.0 – 63.255.255.255 56.0.0.0/5 134,217,728 59.205.67.55
San Francisco Bay Area 7,800,000 64.0.0.0 – 64.127.255.255 64.0.0.0/9 8,388,608 64.76.116.190
San Diego 3,300,000 64.128.0.0 – 64.191.255.255 64.128.0.0/10 4,194,304 64.165.186.152
Orange County 3,200,000 64.192.0.0 – 64.255.255.255 64.192.0.0/10 4,194,304 64.252.188.49
Inland Empire 4,600,000 65.0.0.0 – 65.127.255.255 65.0.0.0/9 8,388,608 65.49.4.236
Central Valley 6,500,000 65.128.0.0 – 65.255.255.255 65.128.0.0/9 8,388,608 65.225.162.213
Sacramento Area 2,400,000 66.0.0.0 – 66.63.255.255 66.0.0.0/10 4,194,304 66.56.177.100
Central Coast 1,500,000 66.64.0.0 – 66.95.255.255 66.64.0.0/11 2,097,152 66.73.175.153
North Coast / Redwoods 800,000 66.96.0.0 – 66.111.255.255 66.96.0.0/12 1,048,576 66.107.135.4
Sierra Nevada / Gold Country 1,200,000 66.128.0.0 – 66.159.255.255 66.128.0.0/11 2,097,152 66.138.55.194
Los Angeles Neighborhoods (Detailed)
Neighborhood ZIP Codes Est. Users IP Range Sample IP
Downtown Los Angeles 90012, 90013, 90014, 90015, 90017 450,000 / 91.80.87.19
Hollywood 90027, 90028, 90038, 90046 350,000 / 99.58.134.66
Beverly Hills 90210, 90211, 90212 150,000 / 14.85.107.249
West Los Angeles 90024, 90025, 90064 280,000 / 242.80.90.128
Venice 90291 80,000 / 123.162.108.146
Santa Monica 90401, 90402, 90403, 90404, 90405 120,000 / 225.140.15.72
South Los Angeles 90001, 90002, 90003, 90011, 90044 520,000 / 37.145.193.42
East Los Angeles 90022, 90023, 90063 310,000 / 63.28.232.74
San Pedro 90731, 90732 90,000 / 37.206.99.187
North Hollywood 91601, 91602, 91603, 91604, 91605 … 210,000 / 33.38.41.242
Encino 91316 90,000 / 49.89.206.124
Woodland Hills 91364, 91367 100,000 / 111.42.169.176
Van Nuys 91401, 91405, 91406, 91411 190,000 / 44.86.164.64
Sherman Oaks 91403, 91423 130,000 / 106.99.179.131
Chatsworth 91311 85,000 / 48.15.159.37
Pacific Palisades 90272 45,000 / 159.105.236.184
PHP Variable Ranges (Code Integration)
'51.0.0.0/5',
'total_users' => 100000000,
'regions' => [
'Los Angeles Metro' => ['start'=>'56.0.0.0','end'=>'63.255.255.255','prefix'=>5,'users'=>68700000], 'San Francisco Bay Area' => ['start'=>'64.0.0.0','end'=>'64.127.255.255','prefix'=>9,'users'=>7800000], 'San Diego' => ['start'=>'64.128.0.0','end'=>'64.191.255.255','prefix'=>10,'users'=>3300000], 'Orange County' => ['start'=>'64.192.0.0','end'=>'64.255.255.255','prefix'=>10,'users'=>3200000], 'Inland Empire' => ['start'=>'65.0.0.0','end'=>'65.127.255.255','prefix'=>9,'users'=>4600000], 'Central Valley' => ['start'=>'65.128.0.0','end'=>'65.255.255.255','prefix'=>9,'users'=>6500000], 'Sacramento Area' => ['start'=>'66.0.0.0','end'=>'66.63.255.255','prefix'=>10,'users'=>2400000], 'Central Coast' => ['start'=>'66.64.0.0','end'=>'66.95.255.255','prefix'=>11,'users'=>1500000], 'North Coast / Redwoods' => ['start'=>'66.96.0.0','end'=>'66.111.255.255','prefix'=>12,'users'=>800000], 'Sierra Nevada / Gold Country' => ['start'=>'66.128.0.0','end'=>'66.159.255.255','prefix'=>11,'users'=>1200000]
],
'la_neighborhoods' => [
'Downtown Los Angeles' => ['start'=>'','prefix'=>0,'users'=>450000], 'Hollywood' => ['start'=>'','prefix'=>0,'users'=>350000], 'Beverly Hills' => ['start'=>'','prefix'=>0,'users'=>150000], 'West Los Angeles' => ['start'=>'','prefix'=>0,'users'=>280000], 'Venice' => ['start'=>'','prefix'=>0,'users'=>80000], 'Santa Monica' => ['start'=>'','prefix'=>0,'users'=>120000], 'South Los Angeles' => ['start'=>'','prefix'=>0,'users'=>520000], 'East Los Angeles' => ['start'=>'','prefix'=>0,'users'=>310000], 'San Pedro' => ['start'=>'','prefix'=>0,'users'=>90000], 'North Hollywood' => ['start'=>'','prefix'=>0,'users'=>210000], 'Encino' => ['start'=>'','prefix'=>0,'users'=>90000], 'Woodland Hills' => ['start'=>'','prefix'=>0,'users'=>100000], 'Van Nuys' => ['start'=>'','prefix'=>0,'users'=>190000], 'Sherman Oaks' => ['start'=>'','prefix'=>0,'users'=>130000], 'Chatsworth' => ['start'=>'','prefix'=>0,'users'=>85000], 'Pacific Palisades' => ['start'=>'','prefix'=>0,'users'=>45000]
]
];
function getUserIp($regionKey, $userId, $rangesArray) {
$region = $rangesArray['regions'][$regionKey] ?? null;
if (!$region) return null;
$startLong = ip2long($region['start']);
$blockSize = pow(2, 32 - $region['prefix']);
$offset = $userId % $blockSize;
return long2ip($startLong + $offset);
}
?>
Usage example:
require 'california_ip.php';
$userIp = getUserIp('Los Angeles Metro', 12345678, $californiaIpRanges);
echo "User IP: $userIp"; // e.g., 51.12.78.201
Note: All IPs are simulated from the 51.x.x.x range. The allocation ensures no overlap and covers the estimated 100 million users with room for growth.
California IP Variation Manager – Simulated IPv4 ranges for development & testing. Base "Fiveo1" = 51.0.0.0/5.
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