Mobile IPs and Their Advantages
An IP address is a unique number that identifies every device on a network — for example, a computer. IP addresses let devices find each other and exchange data.
An IP address is written as four numbers separated by dots, such as 181.36.2.74. Each number falls in the range 0–255, so the full IP address space runs from 0.0.0.0 to 255.255.255.255.
What makes mobile IP addresses special is that there are fewer IPs than there are users connecting to the internet. That means multiple people can share the same IP on the same website at the same time. The underlying technology is called NAT (Network Address Translation). Because mobile users naturally blend in with one another, mobile proxies are a convenient tool for webmasters. On top of that, switching a phone to airplane mode and back causes the carrier to assign a new IP address, making it easy to manage multiple accounts. For more on how IP rotation works, see this article .
IP Address Pool
An IP address pool is the range of IP addresses from which a carrier assigns addresses to users when they connect.
The number of available IP addresses depends on the mobile carrier and the cell tower your SIM card connects to. Different towers in different cities and countries — and different carriers — provide different pool sizes.
Even within a single city, moving around can cause a device to receive an IP from a different pool. Most mobile carriers use DHCP algorithms to manage this.
Dynamic Host Configuration Protocol (DHCP) is a protocol for automatic IP address assignment that distributes addresses to devices dynamically.
Mobile carriers do not publish information about their IP address ranges. Some websites list subnets for various carriers, but this does not give a full picture of the IP pool in any specific area.
A carrier subnet is the first few digits of an IP address. One or more such prefixes are allocated to an ISP by the Internet Assigned Numbers Authority (IANA) and regional internet registries (RIRs). As a result, when your IP changes, only the last digits typically change.
The only reliable way to measure the IP pool for a specific mobile carrier is to run an experiment — for example, observe how many unique IPs are issued over a week with frequent IP rotation every 3–5 minutes.
This spreadsheet contains statistics on the number of unique IP addresses over 7, 30, and 90-day periods.
The IP pool is finite, but the data shows that even with frequent IP rotation you may not exhaust all addresses within a single month — and unique IPs can still appear by the end of the third month of use.
iProxy.online cannot control how a carrier selects IP addresses from its pool. However, the dashboard includes a dedicated feature — Unique IP — that minimizes repeated IPs. When Unique IP is enabled, each rotation checks whether the new address has already been seen within a specified interval (for example, the past 24 hours). If the address is a repeat, the system triggers another IP change automatically. You can enable this feature in the dashboard under the connection settings section “Change IP”: set the lookback interval for checking IP repetition and the number of additional airplane-mode retries.
The maximum number of airplane-mode retries is 10, and the maximum lookback interval is 48 hours. The feature does not completely eliminate IP repetition, but it makes operation as smooth as possible and helps you get unique IP addresses over any given time period.
Based on collected data, the IP pool trends toward a finite number, but unique IPs remain obtainable even after 3 months — they just appear less frequently among the total number of IP changes.
Which Proxies Should You Choose — Large Cities or Smaller Regions?
IP address pools in major cities are typically larger than in small towns or rural areas, primarily because of population density and internet demand.
Logically, it might seem better to choose proxies from large cities in order to blend in with ordinary users. On the other hand, in smaller towns and villages, IP addresses are less likely to have been used on your target sites before, so they may appear “cleaner” — though a sudden spike in mass activity from a small locality could itself look suspicious.
It is also worth noting that IP allocation is a dynamic process, and pool sizes can vary as internet usage grows.
Conclusion
High-quality proxies help in a number of scenarios: bypassing anti-fraud systems on ad platforms, masking your footprint, and protecting accounts — especially when managing many of them.
Mobile proxies are the best choice for this because they are inherently more trustworthy. By analyzing them properly, you can avoid unpleasant surprises and protect the revenue from your ad campaigns.
