The phone number 621141004 has been reported multiple times by users on platforms specialised in identifying unwanted calls. It is a mobile number from República Móvil in Spain that appears to be associated with fraud and identity theft attempts, according to records available in telephone complaint databases.
Calls from this number follow a pattern that has alerted many Spanish users: they attempt to impersonate well-known energy supply or telecommunications companies to obtain personal data or provoke fraudulent contract changes. The persistence of these calls and the sophistication of the techniques used suggest a well-organised operation that seeks to evade consumer protection systems.
What is known about 621141004
The number 621141004 belongs to the network of República Móvil, a Spanish mobile operator. From a technical perspective, it is a conventional mobile phone, which makes it easy for scammers to use it freely and change devices to bypass blocks.
In specialised complaint databases, it is primarily classified under the fraud category. Users who have reported it describe attempts at vishing — fraud through identity theft over the phone — where callers claim to represent companies like Endesa, Iberdrola, or O2. They use this pretext to try to access sensitive information or change contract terms without valid consent.
What is concerning is that many of these callers know basic user data, such as their current energy or telecommunications provider, which increases the credibility of the impersonation and reduces the user's ability to detect the fraud immediately. This information suggests that scammers have access to stolen databases or information obtained from previous security breaches.
What those who have received calls say
Users who have reported calls from 621141004 describe a very similar script in their experiences. According to available records, the callers introduce themselves as employees of energy companies, claiming that the user has not read communications about bills or changes in service. They use a mix of urgency and veiled threats to pressure the user into providing personal data or confirming contract changes.
In several reported cases, users mention that the scammers insisted heavily on obtaining the customer number, banking details, or access information to the provider's platform. When users refused or expressed doubts, some claim they received repeated calls from this same number or from other similar numbers, in a pattern of phone harassment.
An unsettling aspect mentioned by several affected individuals is that the number continues to call even after being blocked on the device. This suggests that scammers use automated systems or simply dial manually from multiple different numbers, changing the point of origin to evade traditional blocks.
Is it a legitimate call or spam?
Available records classify calls from 621141004 as unreliable and associated with scams. However, it is important to note that there is no verified information about who exactly operates this number currently. What is confirmed is that users report systematic fraud attempts.
The characteristics that define these calls as fraudulent according to reports include: impersonation of well-known companies, aggressive requests for personal data, use of partial information to gain credibility, artificial time pressure, and number changes to evade blocks.
If you receive a call from 621141004 or from similar numbers impersonating your energy or telecommunications provider, it is advisable to hang up immediately. Legitimate companies do not request sensitive data over the phone unexpectedly nor pressure you to act urgently on contract changes.
What to do if you receive a call from this number
If you receive a call from 621141004 or suspect it is a scam, the first thing is not to provide any personal data, customer number, or banking information. Hang up immediately if the caller cannot clearly verify their identity.
An effective strategy is to hang up and call the customer service of the supposed provider directly using the number that appears on your bill or on the official website. This way, you ensure you are speaking with legitimate representatives. Real companies will never ask you to confirm sensitive data over the phone initiated by them.
If you have provided personal data or account number to the scammers, contact your bank and your energy or telecommunications provider immediately to inform them of the fraud attempt. Ask them to monitor your account and change your access passwords.
Do not return the call to this number. In the case of special rate or suspicious numbers, returning the call may incur additional costs or expose your number to even more aggressive spam lists.
How to block it and where to report
Blocking 621141004 on your device is straightforward. On Android, open the Phone app, find the number in the call history, press and hold, and select the option "Block number." You can also go to Settings > Apps > Phone > Blocked Numbers and manually enter the number.
On iPhone, open the Phone app, find the number, tap the information icon, and scroll to "Block this contact." If you already have it saved as a contact, you can block directly from the Contacts app.
Beyond blocking on the device, it is important to report these calls. You can register your complaint in the Robinson List, which is a registry where you can request not to receive unsolicited commercial calls. Although this list does not stop all scams, it can reduce calls from legitimate companies operating within the law.
To report officially, you should contact the AEPD (Spanish Data Protection Authority) or the OCU (Organisation of Consumers and Users). Both organisations receive complaints about unwanted commercial calls, vishing, and phone fraud. Keep a record of the dates, times, and content of the calls to include in your complaint.
You can also report the number on specialised platforms like Tellows, where other users check information about numbers before answering. The more evaluations a number has as a scam, the more visible the warning will be for potential victims.
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