# How operators recover leaked A2P revenue with the right firewall

> Most mobile network operators capture only part of the A2P revenue they are entitled to. The leakage goes to grey routes — and modern firewalls recover it.

- Canonical URL: https://www.broadnet.me/blog/operator-firewall-roi
- Language: en
- Last updated: 2026-10-01
- Publisher: BroadNet (https://www.broadnet.me)

- Published: 2026-03-10
- Author: BroadNet Operator Solutions

A Tier-1 MENA mobile operator carries very large SMS volumes every month, and a substantial share of it is A2P traffic — sent by businesses to subscribers. At A2P interconnect rates, that traffic should be a significant revenue line. In practice, most operators capture only part of it. The difference is grey-route leakage — and the right firewall recovers it.

## Where the leakage comes from

- Aggregators routing A2P traffic as P2P via consumer SIM cards ("SIM box" termination).
- Foreign HLR lookups masking the true source operator.
- SS7 backdoors abused for SMS originator falsification.
- Unmonitored international aggregator agreements without sender-ID enforcement.

## What firewalls do about it

Modern SMS firewalls — including BroadNet's — combine behavioural ML (per-MSISDN baseline, throughput anomalies, sender-ID reputation) with deterministic rules (sender ID registry, content category, route reputation). The result: traffic that bypasses official A2P agreements gets identified, blocked, or routed through a billable A2P path.

## What year one looks like

How much revenue comes back depends on the network. Operators with no firewall have the most grey traffic to convert; those with legacy rule-only firewalls have already closed the easiest categories. BroadNet does not publish a benchmark figure — the recoverable share is measured on your own traffic, in mirror mode, before anything is enforced.