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Coronium Mobile Proxies
TECHNICAL DEEP DIVE

How to Build a Large Mobile IP Pool with 20+ Ports

CGNAT Math Inside - The Smart Way to Scale

Master the mathematics and engineering behind building massive mobile IP pools. Learn how CGNAT enables true IP diversity for growth teams and scraping operations.

100-500
IPs from 10 modems
20-30x
Port multiplier effect
95%+
Success rate target
2-5 Mbps
Per port bandwidth

CGNAT Architecture Visualization

Mobile Devices

100K-500K devices per carrier

CGNAT Layer

500-5000 IPs pool size

Public Internet

1:100-1:500 sharing ratio

Understanding CGNAT: Your Secret Weapon

Carrier-Grade NAT is the technology that makes mobile proxies undetectable and enables massive IP diversity.

How CGNAT Works

Mobile carriers face IPv4 exhaustion. Their solution? CGNAT - sharing single public IPs among hundreds of users.

The Magic Numbers:

  • 1 Public IP โ†’ 100-500 mobile devices
  • Port ranges: 1024-65535 (64,000+ ports)
  • Typical allocation: 100-200 ports per device

Why This Matters for IP Pools

Undetectable Traffic

Your requests blend with hundreds of real users on the same IP

Natural Port Diversity

Different ports = different user sessions to target servers

Dynamic Pool Changes

CGNAT pools rotate naturally as users connect/disconnect

The 4 Diversity Levers: Multiply Your IP Pool

Stack these techniques to transform a small farm into a massive IP pool

Carrier Selection

High Impact

Different carriers = different CGNAT pools

Multiplier: 2-4x

Port Allocation

Very High Impact

20-30 ports per IP = 20-30 different 'users'

Multiplier: 20-30x

Rotation Timing

High Impact

Smart rotation captures CGNAT pool changes

Multiplier: 3-5x daily

Geographic Distribution

Medium Impact

Different regions = different IP blocks

Multiplier: 1.5-2x

Interactive IP Pool Calculator

10
20
6h
240
Concurrent IP Pool
960
Daily Unique IPs
Port Multiplier: 4.00x | Rotation Bonus: +200%

The Pool Math: Formulas That Matter

Core Formulas

Effective IP Pool Size

Pool = Modems ร— Carriers ร— (Ports/5) ร— RotationFactor
Where RotationFactor = (24 / RotationHours) ร— 0.5

Daily Unique IPs

DailyIPs = BasePool ร— (24 / RotationInterval) ร— CGNATChurn
CGNATChurn typically ranges from 1.2 to 1.8

Concurrent Capacity

Capacity = (Modems ร— Ports) ร— (1 - OverheadFactor)
OverheadFactor = 0.1 to 0.2 for management overhead

Real-World Examples

10 Modem Setup

  • โ€ข Base IPs: 20-40 concurrent
  • โ€ข With 20 ports each: 200 sessions
  • โ€ข Daily unique IPs: 50-200
  • โ€ข Monthly unique IPs: 500-2000
  • โ€ข Investment: $3,000-5,000

Quality Controls: Maintaining Elite Status

>95%

IP Reputation Score

Target:>85%
Critical:>95%
>98%

Rotation Success Rate

Target:>90%
Critical:>98%
>5 Mbps

Bandwidth per Port

Target:>2 Mbps
Critical:>5 Mbps
<1% hourly

Carrier Stability

Target:<5% daily churn
Critical:<1% hourly
>2000 IPs

CGNAT Pool Size

Target:>500 IPs
Critical:>2000 IPs

Monitoring Implementation

terminal
$ curl -X GET 'http://api.ipqualityscore.com/api/json/ip/YOUR_KEY/\$IP'
{'success': true, 'fraud_score': 85, 'proxy': false, 'vpn': false, 'mobile': true}

Automate quality checks every 6 hours. Remove IPs scoring below 85 immediately.

Orchestration Blueprint: Production Architecture

Physical Infrastructure Setup

Hardware Requirements

  • USB hubs: Powered, 10-20 ports each
  • Modems: LTE Cat 4+ minimum
  • Server: 16GB RAM, 8+ cores
  • Cooling: Active ventilation required

Network Architecture

  • Load balancer: HAProxy or nginx
  • Proxy software: 3proxy or Squid
  • Management: Docker containers
  • Orchestration: Kubernetes (optional)
terminal
$ docker run -d --name proxy-manager -p 8080:8080 -v /modems:/modems proxy-orchestrator:latest

CLI Magic: Automation Scripts

Pool Management

#!/bin/bash
# Auto-rotation script
while true; do
for modem in $(list-modems); do
score=$(check-ip-score $modem)
if [[ $score -lt 85 ]]; then
rotate-modem $modem
fi
done
sleep 3600
done

CGNAT Discovery

# Discover CGNAT pool size
curl -s ipinfo.io/ip > current_ip.txt
for i in {1..10}; do
usb_modeswitch -R
sleep 30
curl -s ipinfo.io/ip >> pool.txt
done
sort -u pool.txt | wc -l
# Output: Unique IPs in pool

Frequently Asked Questions

Expert answers to common mobile IP pool questions

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