LU

Reverse Phone Lookup in Luxembourg — Recent Community Reports

Check unknown Luxembourgish numbers with recent reports (Luxembourg City, Esch‑sur‑Alzette) and share your experience.

Unknown calls in Luxembourg

Unsure about a Luxembourg number? Explore concise community notes to judge calls and texts. In Luxembourg City and Esch‑sur‑Alzette you’ll see both legitimate callbacks (deliveries, banking, appointments) and waves of robocalls or phishing. Mobile 6xx ranges and 800 toll‑free/non‑geographic patterns provide context but are not proof of origin due to portability and VoIP.

Verification: return calls via the official number on the provider’s website/app, check in‑app notices and never share one‑time codes by phone. Use device/carrier blocking for repeats and leave a short, factual note here to help others.

35213000
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Similarly, this has been observed in Spain as well

35213000 Harassment Call
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We were contacted at an inconvenient hour, 3:15am, and then again just a few hours later, at 6:00 am, by this particular number

35213000 Unknown
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It seems I'm not the only one experiencing this issue, even locally

35213000 Unknown
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Nakon četiri poziva, još uvijek nije jasno koji je razlog njihovih poziva, niti je bilo moguće stupiti u kontakt s njima da bi se saznalo zbog čega zovu.

35213000
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Here in Croatia, we recieve similiar calls too, alot.

35213000
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We've experienced the same issue in Croatia, with this number calling us on three separate occasions

35213000 Silent Call no
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Generally, the calls from this number are received once or twice daily, typically in the evening, but the caller hangs up without leaving a message, only a beep sound

35213000 SMS 0035213000
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The same issue is occurring in Portugal as well

35213000
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This phenomenon is also observed in Croatia

35213000 Unknown 0035213000
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The experience in the Netherlands is no different, with repeated calls, particularly during nighttime hours, which seems utterly pointless

35213000 Unknown 0035213000
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Similarly, I had the same experience with constant beeping sounds

35213000 SMS fax
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Receiving frequent calls from numbers 35213000 and 21699600, with up to three calls daily, has become a regular occurrence in the Netherlands

35213000 Unknown
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Hungary has also been affected, with two calls received at 1:04am and 6:03am

35213000
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The incessant calls are proving to be a nuisance, with three instances reported, including one at an ungodly hour of 01:54, followed by another at 06:24, and yet another at 10:57, each time being greeted by a frustrating "beep" upon answering.

35213000
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A similar experience has been reported in Poland as well

35213000 SMS
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Interestingly, the same phenomenon has been observed in Germany, where a call was received at 4:40 at night, characterized by a repetitive beep sound

35213000
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Nighttime calls are persistant in Russia too, alot of anoying calls all nite :(

35213000
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My phone number is also affected by this issue

35213000
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Norway is where we resides, and recieved alot of random calls from this number, when we pickup, all we hear is a beep, and if we try to call back, a person is on the other end speaking somthing we cant understand

35213000 SMS
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nighttime is when they usually call

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FAQ — Luxembourg

How to verify callers in Luxembourg?

Use the official website/app number; avoid calling back the unknown number; check in‑app messages.

Do ranges prove origin?

No. Portability/VoIP make mobile and non‑geographic ranges unreliable as proof of origin.

Common patterns?

Delivery updates, bank callbacks, 2FA codes; robocalls, parcel/account phishing and scripted sales.

Useful report details?

Caller type, purpose, date/time, and cues that guided your decision.

Popular area codes

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