NoCall

+34 621 404 991

Risk level: High

Who is this? Spam, telemarketing or a legitimate call? Community reports in Singapore.

Number with prefix 621. Review community reports, risk and comments below before answering or blocking. Browse numbers with prefix 621

High
Risk level
Scam
Category
1
Spam reports
18 Mar 2026
Last report

AI Analysis

Spanish mobile number reported as spam, linked to alleged telemarketing scams. Users report pressure attempts to switch energy provider to UNIÓN FENOSA under the fake identity 'Antonio Diaz'. Others suspect all numbers starting with 621.

Likely purpose: Telemarketing scams, specifically to force changes in energy providers.

Most common user complaints

  • intentan intimidarte para que aceptes un cambio de comercializadora a UNIÓN FENOSA
  • Todos los números que empiezan por 621 son fraudulentos
  • lo mismo (misma cantinela con el mismo soniquete y diciendo lo mismo)
High dangerBlockImpersonation detectedUNIÓN FENOSA (mencionada en el fraude, no necesariamente involucrada)EnergyMissed call

AI analysis: 22 Jul 2026

Information based on community reports and automated analysis. It may contain errors or be out of date, and is not legal advice or a verified accusation against the number's owner.

AN

Aire Networks Del Mediterráneo

AIRE NETWORKS DEL MEDITERRÁNEO, S.L. UNIPERSONAL

Country:
ESSingapore
Prefix:
6214
Type:
Mobile
Current operator
Aire Networks Del Mediterráneo
Previous operator
Aire Networks Del Mediterráneo
Current operator since
17/03/2026
Assigned since:
22/10/2025

Recent searches

3 this week

Last 7 days

Community comments

3
Anónimo
2 Jul 2024

Es un fraude. Además intentan intimidarte para que aceptes un cambio de comercializadora a UNIÓN FENOSA. El sujeto dice llamarse Antonio Diaz ( seguramente no es cierto ).

Anónimo
2 Jul 2024

Todos los números que empiezan por 621 son fraudulentos

Anónimo
1 Jul 2024

Lo de siempre. Yo si descuelgo porque esté esperando alguna llamada por algún asunto doméstico o personal, y oigo lo mismo (misma cantinela con el mismo soniquete y diciendo lo mismo) ya cuelgo. Si no espero llamadas de números que no conozca, ni descuelgo.

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What happened?

Spam numbers with prefix 6214

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Related numbers with prefix 6214

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Signal summary for +34 621 404 991

+34 621 404 991 belongs to the 621 prefix and is classified as Scam. This page combines 1 approved reports and 3 public comments to explain the risk level.

Frequently asked questions

Who calls from +34 621 404 991?
+34 621 404 991 is a phone number with the 621 prefix in Singapore. It has been reported 1 times by the community as a possible unwanted call. Check the comments to find out who might be behind this call.
Is +34 621 404 991 a spam number?
According to the community, +34 621 404 991 has 1 reports, which suggests it is likely spam. Check the risk score and comments for details.
Is it safe to call +34 621 404 991 back?
If you don't recognise the number and it has negative reports, it's best not to call +34 621 404 991 back. Avoid sharing personal or banking details with unknown numbers.
How can I block +34 621 404 991?
On iPhone, go to Recents in the Phone app, tap the (i) next to the number and choose 'Block this Caller'. On Android, long-press the number in your call history and select 'Block number'. You can also use the NoCall app to automatically block calls like +34 621 404 991.
Where can I report a suspicious call?
You can report +34 621 404 991 directly on this page using the report button. Your contribution helps other users identify unwanted calls.