0497: which operator is this number in Belgium?

The 0497 prefix was assigned to Orange, then known as Mobistar, in 1999. But since number portability came into force in Belgium in 2002, this prefix no longer guarantees the current operator — the holder may have switched networks while keeping their number. To find out who really operates a 0497 number, there is only one reliable tool: the NPA database at crdc.be.

A Belgian mobile prefix — the two digits that follow 04 — identifies the operator that originally received that number range, not necessarily the one billing the subscriber today. Portability means the right to keep your number when you switch operator. To put it plainly: 0497 tells you where the number came from, rarely where it is now.

Which operator is 0497 in Belgium?

Originally, 0497 is an Orange prefix — formerly Mobistar, which put this range into service in 1999 for its mobile subscribers. A number beginning with 0497 was therefore opened at Orange, or at a virtual operator running on the Orange network.

The 049x range covers more than one brand. According to Astel's prefix database (updated late 2024), the 0490–0499 numbers include Orange but also hey! telecom, EDPnet and Mega — three MVNOs that lease Orange's physical network and route their customers over it. A hey! subscriber can perfectly well have a 0497 number.

In practice, if a colleague gives you a new Orange number opened since the 2000s, it will often start with 049x — and 0497 is part of that range. This tells you nothing about their current plan or the operator billing them today.

Does the 0497 prefix guarantee the current operator?

No. The prefix indicates the original operator, not the current one. Since number portability arrived in Belgium in 2002, any subscriber can change networks while keeping their number. A 0497 originally assigned by Orange can therefore now be with Proximus, BASE, Telenet, or an MVNO.

This is precisely what raw prefix lists — Wikipedia, the Astel list, Orange's own blog — fail to highlight. You find the range, you read "Orange", and you wrongly conclude that the caller is still with Orange today. They may have ported to Proximus in 2023 for a better deal: their number still starts with 0497, but the network and the bill have changed.

This logic applies to all 04xx ranges. If you want to choose an operator rather than identify a number, our guide which mobile operator to choose in Belgium walks you through it by profile and real price.

How do I find the real operator of a 0497 number?

Enter the full number, in 04XXXXXXXX format, on crdc.be, the database managed by the NPA (Number Portability Association), also accessible via 1399.be. The tool returns the operator currently serving the number, regardless of the original prefix. Orange and BASE offer an equivalent search from their support websites.

The NPA is the association that manages portability for all Belgian operators. Its database is the source of truth: it knows which network is actually providing service to a number right now. Far more reliable than a prefix list that may reflect an assignment made twenty-five years ago.

Example: you receive a missed call from an unknown 0497. Enter the full number on crdc.be. Within seconds, you can see whether it's still with Orange, or whether it has been ported. It won't give you the person's identity, but it resolves a large part of the doubt.

Is the operator look-up free and anonymous?

Yes. Looking up the NPA database on crdc.be is free and anonymous. It shows the operator serving the number — never the subscriber's identity or address — and requires no registration. You get the network name, nothing more.

Belgian 04xx mobile prefixes: original operator at a glance

Here are the main 04xx ranges and the operator that originally received them, according to Astel's prefix database. Reminder: portability may have changed the real operator for any number on this list.

Is a 0497 call a cold-call or a scam?

Not necessarily, but caution is warranted. The majority of 0497 numbers belong to genuine mobile subscribers. Others are used for commercial cold-calling: in 2026, several numbers in the 049x range are flagged as "nuisance" on page-jaune.be, mostly for repeated advertising calls or phishing attempts.

A simple rule: a cold-caller rings during business hours, leaves no voicemail, and calls back several times in quick succession. A legitimate caller generally leaves a message or sends a confirmation SMS. If the number rings just once to prompt you to call back, that's the classic missed-call scam pattern.

How do I block an unwanted 0497 number?

Add the number to your phone's block list: Android and iOS both do this in two taps from the call log. For unsolicited commercial calls, register for free on the Do Not Call Me list (dncm.be), which Belgian telemarketers are legally required to respect.

Should you call back an unknown 0497 number?

If you don't recognise the number and no message was left, don't call back in a hurry. First check the operator on crdc.be, then search the number on a reverse directory or a reporting site like page-jaune.be. A 0497 is a Belgian mobile at normal rates — the call itself won't be premium-rated.

The real risk isn't the cost of the call: it's confirming that your number is active, getting drawn into a cold-calling conversation, or being redirected to a paid service. When doubt persists, wait for a message. A serious caller will find another way to reach you.

To go further on network choice rather than number origin, see our article on the 0480 prefix and Telenet or compare coverage with our guide Proximus, Orange or BASE.