Check unknown Dutch numbers with recent community reports (Amsterdam, Rotterdam, The Hague, Utrecht, Eindhoven) and share your experience.
Unsure about a Dutch number? Here you can browse concise reports from the community to judge unfamiliar calls and texts. Around Amsterdam, Rotterdam, The Hague (Den Haag), Utrecht and Eindhoven you will see a mix of legitimate callbacks (deliveries, banking, appointments) alongside robocalls or phishing waves. Classic geographic prefixes like 020 (Amsterdam), 010 (Rotterdam), 070 (Den Haag), 030 (Utrecht) and 040 (Eindhoven), as well as mobile ranges (06), no longer prove location or caller identity because of portability and VoIP — treat them as context only.
Verification basics: return calls via the official number listed on the company website/app, check in‑app messages, and never share one‑time codes over the phone. Use device/carrier blocking for repeat offenders and add a short, factual note here (caller type, purpose, date, cues) so others can benefit from your experience.
I just recived a call from this number and ansered, they were doing some kind of research for the provence of Noord Holland about job opertunities and company controle
I received a call from this number despite being registered on the do-not-call list and having infofilter for surveys, etc.; it was about energy research, so I hung up and blocked the number in my phone.
Upon receiving a call from a purported community representative, I noticed the individual taking a deep breath before speaking in a sugary tone, introducing himself with a generic phrase, and proceeding to ask sensitive questions under the guise of a municipality investigation. After politely declining, the caller abruptly ended the conversation with a profane remark.
Belonging to Educore B.V. in Weesp
Luc de Krosse is associated with Arnhem.
After sending a sms or voicemail, the Consumentenbond calld back with this number to arrange the order
A call was received, and after providing my name, the line was disconnected
When I picked up, no one was on the other end, raising concerns about potential danger
This number keeps calling me back, it's very annoyin and dont stop
After becoming a donor to a certain organization, return calls are made, which is a normal practice.
They called to welcome and verify information, the interaction was pleasant and professional
This number is part of a donor recruitment company, which gets paid for its services, so donating online is a better option
This is a legitimate charity, Save the Children
The woman on the phone claimes we have a deal, but thats not true and she just keeps saying it is, Its realy anoying
This number is linked to Mega4 B.V., located in Maassluis
Not exactly what I expected, so I dont think so
This number belonds to amodco b.v. from noordwijkerhoutt
Located in Oldenzaal, Impulse Info Systems is aparently a companey
The number belongs to B.J. Bosch from Den Ham, Overijssel
The company name is Het Huis Opticiens, you can find them on www.hethuisopticiens.nl
Call back using the official number from the company website/app, not the unknown number; check in‑app notices.
No. Portability/VoIP mean 020/010/070/030/040 and 06 are not reliable evidence of origin.
Delivery and appointment confirmations, bank callbacks, 2FA codes; also parcel/account phishing and scripted sales calls.
Be brief and practical: caller type, purpose, date, and hints that guided your decision.