If this number calls you, it’s probably DIGI

If you receive a call from a number starting with 400 120, it’s likely DIGI. Here’s how to identify their offers and avoid fraud.

Elena Herrero
Elena Herrero
· 6 min read

Your mobile rings at lunchtime, a number you don’t have saved appears, and the internal debate begins: do I answer or let it ring? If that number starts with 400 120, there’s a good chance it’s DIGI, the operator that has won over half of Spain with low prices and, like all, has a commercial department eager to talk to you.

The good news is that it’s not a stranger with bad intentions or a robot trying to sell you solar panels for the fifth time this week. The not-so-good news is that, indeed, they want to tell you about an offer. Let’s break it down.

DIGI numbers for commercial calls

DIGI currently uses several numbers for its commercial calls in Spain. They are:

  • 400 120 120
  • 400 120 122
  • 400 120 131
  • 400 120 134

If any of these appear on your screen, it’s most likely the company itself contacting you, whether you are a customer or not. It’s advisable to save them in your contacts with a clear name, like “DIGI commercial”, so you know what’s going on before you pick up. This way, you can decide with full knowledge whether you want to hear an offer or prefer to continue with your lentil dish.

Why they start with 400

It’s not a coincidence or an aesthetic whim. Spanish regulations require that commercial calls be identified with a specific prefix, and 400 is the chosen one for this type of communication from fixed numbering. The idea is simple: the user knows at a glance that they are going to be sold something, without having to guess it from the enthusiastic tone of the telemarketer.

In other words, 400 is somewhat like the “advertisement” label for phone calls. Companies that comply with the law use it, and those that don’t use it to call you for commercial purposes are, quite simply, breaking the rules. A point in favour of transparency, although that doesn’t make the call at three in the afternoon any less inconvenient.

What DIGI wants when they call you

There’s not much mystery here. When the call comes from one of these numbers, the reason is usually one of the following:

  • Offering you fibre, mobile or a combined package if you are not yet a customer.
  • Proposing a transfer from your current operator, usually with a price that makes your current bill look like a small heist.
  • Improving your rate if you are already with them, for example with more speed, more gigabytes or additional lines.
  • Informing you of changes or promotions related to your contract.

In other words, good old commercial calls. No one is going to force you to do anything by answering, and you can always say a polite “I’m not interested, thank you” and carry on with your day. Don’t feel embarrassed: the telemarketer hears that phrase more times a day than “good morning”.

How to know if the call is legitimate

Just because a number starts with 400 120 does not guarantee that it’s DIGI. There is a fraudulent practice called spoofing, which consists of faking the number that appears on the screen to impersonate a known company. Scammers are many things, but lazy they are not.

Therefore, beyond the number, what’s important is what they ask you during the call. A serious operator can offer you a rate, explain conditions, and if you accept, initiate a contracting process with the corresponding verification. What they will never do is ask you for information they don’t need.

Red flags

Hang up without remorse if during the conversation they ask for:

  • Passwords for your customer area or online banking.
  • Codes that arrive via SMS, especially if you haven’t requested anything.
  • The full number of your card along with the CVV.
  • To install an application on your mobile or computer “to solve a problem”.
  • Urgent payments to avoid a supposed service cut.

If you have doubts, the most sensible thing is to hang up and call DIGI through their official customer service channels. This way you ensure you are speaking with who you think you are speaking with. No one has ever regretted being a little more cautious with their banking details.

How to stop receiving these calls

If you prefer your phone to ring only for important things (or for your mum to ask if you’ve eaten), you have several options to reduce or cut commercial calls.

Robinson List and right of opposition

The most well-known tool is the Robinson List, a free advertising exclusion service. By signing up, companies that run commercial campaigns must consult it and exclude those who appear on it, as long as you are not their customer or have not given them your express consent.

If you are already a DIGI customer, the situation changes a bit, because the contractual relationship allows for some commercial contact. Still, you can exercise your right of opposition and directly ask the company to not call you again for advertising purposes. Just request it through their customer service or even tell the telemarketer during one of those calls.

Blocking numbers on your mobile

The quick and DIY option: block the four numbers from your smartphone’s call log. Both Android and iPhone allow this with a couple of taps. Additionally, many devices include spam filters that automatically identify commercial calls. Just keep in mind that if you block these numbers you will also miss out on some offers that might interest you. You decide if it’s worth it.

Frequently asked questions about these numbers

Is it mandatory to answer?

Absolutely not. You can ignore the call without any consequences. If it was something really important related to your contract, the operator has other ways to contact you, such as email or SMS.

Can they contract something without my permission?

No. Any telephone contracting requires your express consent, usually with a verification recording. And even if you accept, the law gives you a cooling-off period to back out if you change your mind.

Do they also call those who are not customers?

Yes, as long as you are not registered on the Robinson List or have not expressly opposed it. Capturing new customers is, precisely, one of the main reasons for these campaigns.

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