Direct route vs grey route.
A direct route is an officially commercial A2P path agreed with the destination operator. A grey route is any path that arrives on the operator's network without going through that commercial agreement — usually by tunnelling through a SIM farm, an unsuspecting P2P interconnect or a foreign roaming agreement. Grey routes are cheaper and unstable. Direct routes are more expensive and reliable. In 2026 most operators actively block grey routes via SMS firewalls, and the gap is widening.
12 rows. No hand-waving.
Same criteria, both columns. Where a row genuinely depends on the use case, the table says so. Where one side is clearly the better tool, the table says that too.
| Capability | column a Direct route Officially monetised A2P path | column b Grey route Unauthorised A2P path |
|---|---|---|
Commercial agreement | Yes, with destination MNO | No |
Operator visibility | Full — operator sees A2P labelled as A2P | Operator sees A2P pretending to be P2P or roaming |
Sender ID enforcement | Honoured | Often stripped or replaced |
Delivery receipts | Real DLR from operator SMSC | Fake or fabricated DLR |
Stability over time | Stable | Unstable — firewalls catch up |
Pricing | Per official A2P rate card | Below A2P, often below P2P |
Firewall risk | Low — designed to pass | High — designed to be blocked |
Regulator risk | Low | High — fines and licence revocation |
Brand risk | Low | High — messages may arrive without your sender ID |
Audit posture | Defensible | Indefensible |
Long-term cost | Stable; matches rate card | Hidden costs in incidents and churn |
Operator firewall behaviour | Pass and bill | Block, sometimes after a delay |
Reviewed quarterly · Submit corrections to press@broadnet.me
- Your application
- BroadNet platform
- Operator SMSC
- Subscriber handset
- Your application
- Aggregator
- Reseller
- Unknown hop
- Operator SMSC
- Subscriber handset
Which side fits which workload.
When to pick a direct route
Always, for any traffic that matters. This is one of the few comparisons in telecom where the honest answer is not 'it depends'.
- Any traffic where deliverability matters — OTP, transactional, regulated.
- Any sender that needs the sender ID to actually arrive on the handset.
- Any business with a regulator that might one day audit the messaging stack.
- Any workload where stability over months matters more than savings in cents.
When grey routes are 'tempting'
There is no honest case for sending business-critical traffic via grey routes. The category exists because some aggregators price aggressively and do not always disclose how. If a quote is meaningfully below the operator's A2P rate card, the route is almost certainly grey.
- Never for OTP, transactional, regulated or branded marketing traffic.
- Never if the workload is subject to audit or regulator oversight.
- Never if the sender ID is part of your brand surface.
- If you see pricing below the official A2P floor, ask exactly which operator pays for it.
Where BroadNet sits.
Honest positioning, not a pitch. Sometimes the right answer is to use the other side of this comparison — we will tell you when.
Talk to a telecom expertBroadNet does not knowingly sell grey-route capacity. Our routing engine is built around our 1,000+ direct operator binds, and the few destinations where we do not hold a direct bind are served via a named tier-1 upstream that has the direct agreement instead. Every route in your account ledger discloses the operator and the path.
We also operate the SMS firewall on the other side of this question — the box that sits in front of 60+ MNO SMSCs and identifies grey-route traffic. That structural fact is part of why we will not sell grey: we would be inviting an awkward conversation with the same operator a week later.
The honest framing for buyers: grey routes are not just a compliance risk, they are a deliverability risk. Operators are deploying SMS firewalls aggressively across MENA, Africa and Asia in 2026. A grey route that worked last quarter will not necessarily work this quarter, and the failure mode is silent — messages that 'send' successfully according to your aggregator but never arrive on the handset.
If you have inherited a CPaaS contract with suspiciously low headline pricing, we will help you audit the routes. The test is straightforward: a hundred sends with branded sender ID, then check whether the sender ID actually arrives on the handset. Grey routes often strip it. Direct routes never do.
The questions we get most often.
What is a grey route, technically?
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What is a grey route, technically?
Any A2P SMS path that reaches a mobile subscriber without going through the destination operator's official A2P commercial channel. Common patterns include SIM farms (sending from racks of phones), exploited SS7 interconnect agreements, and unauthorised use of inbound roaming traffic.
Why are grey routes cheaper?
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Why are grey routes cheaper?
Because they do not pay the destination operator their share of the A2P revenue. The operator's normal A2P rate is calibrated to compensate for the network resource the message consumes; grey routes simply do not pay. That is the entire economic basis for the discount.
Are grey routes illegal?
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Are grey routes illegal?
It depends on the jurisdiction and the specific route. In most MENA markets they are explicitly prohibited and carry fines. In many other markets they are at minimum a breach of the operator's terms of service. Either way, they are not a defensible audit position for a regulated enterprise.
How do operators detect grey routes?
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How do operators detect grey routes?
Via SMS firewalls — boxes that inspect inbound SMS traffic and classify it as P2P, A2P or suspicious. Modern firewalls use signature analysis, traffic-pattern detection and content classification. BroadNet builds and operates the firewall in question for 60+ MNOs.
Can BroadNet guarantee zero grey-route exposure?
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Can BroadNet guarantee zero grey-route exposure?
Yes, on routes where we hold the direct operator bind — which is most of our footprint. For destinations served via tier-1 upstream, we name the upstream in your account ledger so the audit trail is complete.
What happens if I keep sending via grey routes?
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What happens if I keep sending via grey routes?
Three things, in order: deliverability drops as firewalls catch up, brand suffers as sender IDs get stripped, and eventually you have a regulator conversation. None of these are theoretical — we see the pattern monthly across MENA markets.
How do I audit my current vendor's routes?
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How do I audit my current vendor's routes?
Ask them to disclose, per destination operator, which commercial agreement the traffic rides on and which DLR code maps to which operator status. Honest vendors will tell you. Vendors that cannot tell you are almost certainly running grey somewhere.
Other comparisons.
Talk to a telecom expert.
Tell us the workload, the markets and the volumes. We will tell you honestly whether BroadNet is the right fit, the wrong fit, or part of a layered architecture with one of the alternatives.