The main advantage of mobile proxies over every other type rests on a single network technology — CGNAT. It explains why anti-fraud systems treat mobile IPs more leniently than any other, and why blocking a mobile address is so costly for a platform. In this article we break down how CGNAT works at cellular carriers, what it means for IP reputation, and how it works in favor of multi-accounting and SMS reception.

What CGNAT is

CGNAT (Carrier-Grade NAT) is carrier-level address translation technology. Due to the IPv4 address shortage, a carrier cannot hand each subscriber their own public IP. Instead, thousands of subscribers share a small pool of public addresses, while private addresses are distributed to them inside the network.

How it works step by step

  • Your phone gets a private IP from the carrier's range (for example, from the 100.64.0.0/10 subnet reserved specifically for CGNAT).
  • When going online, the carrier substitutes the private address with one of the public IPs from its pool.
  • The "who is who" mapping is kept in a port-based translation table.
  • One public IP thus serves hundreds and thousands of subscribers at once.

Why CGNAT makes a mobile IP "expensive" to ban

The key takeaway is simple: behind one public mobile IP sits a mass of live people. This changes the entire economics of blocking for a platform.

The cost of a wrongful block

If a platform blocks a mobile IP over a single offender, hundreds of real subscribers of the same carrier who are behind that address at that moment get caught in the net. That's why anti-fraud bans mobile IPs last and very cautiously.

A blurred link between action and user

Since the IP is shared, the platform can't unambiguously tie an action to your device by address alone. This naturally lowers the "weight" of the IP as a suspicion factor for mobile networks.

How mobile proxies leverage this

Mobile proxies from turbon.rent are built on physical SIMs of real carriers in 17 countries via GoIP/Simpool infrastructure. Your outgoing traffic exits through the same CGNAT as the carrier's ordinary subscribers.

What you get in practice

  • Telecom ASN — the IP belongs to a cellular carrier, not a hosting provider.
  • Shared-IP effect — you "dissolve" among the live subscribers of the same address.
  • Rotation within the pool — an IP change via API issues another public address of the same carrier.
  • A real network behavioral profile — latency, routes and channel characteristics like a genuine mobile connection.

CGNAT limitations and nuances

No inbound connections "from outside"

You can't simply port-forward into a SIM behind CGNAT from outside — the subscriber has no personal public IP. For proxies this is not a problem (traffic is initiated from inside), but it explains why a mobile SIM is "invisible" to direct inbound connections.

IP neighbors affect reputation

Since the IP is shared, the behavior of other subscribers behind the same address partly affects its current risk score. That's why rotation and an adequate pool matter.

Changing the IP means changing the session

A new public address is issued when the mobile data session re-establishes. This is a natural cellular-network process, not a proxy "trick".

Frequently asked questions

How does CGNAT differ from regular home NAT?

A home router hides several of your devices behind one public provider IP. CGNAT does the same but at the carrier level — thousands of different subscribers and devices hide behind one public address.

Can a specific subscriber be identified by a mobile IP?

By the public IP alone — no, because it is shared among many subscribers. This is exactly the reason for anti-fraud's "lenient" treatment of mobile networks.

Why doesn't a datacenter IP give the same effect?

A datacenter address is usually tied to a specific server and a hosting ASN. There are no thousands of live subscribers behind one IP there, so blocking such an address costs the platform nothing.

Bottom line: CGNAT is the foundation on which mobile proxies' resistance to bans rests. One public IP, thousands of live subscribers, a telecom ASN — and a block becomes too expensive for the platform. To leverage this effect, connect mobile proxies from turbon.rent on physical SIMs with API rotation, and for account registration on clean numbers use OTP activations from turbon.rent.