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.
These individuals have disregarded my registration on the 'do not call' list and are extremely rude
Website of Nettorama found at www.nettorama.nl
Associated with Groot Koerkamp in Heino
This number is associated with Heems sinds 1822 B.V., located in Heemstede.
The company Wellness & Outdoorliving, found at www.outdoorliving.nl, is linked to this number.
Registered to Schreijer Telecom BV
This number is linked to Esw Stucadoors in Hippolytushoef.
This appears to be related to Termenuga Dancing in Amsterdam.
Appears to be associated with the accounting firm J. Calvelage in Bennebroek
This is apparently a maintenance company, D. van Onselen, based in Monster
This is the number for Mensendieck oefentherapie praktijk in Den Bosch
Seem like its Club Dynamite
Employment agency located in Monden, Etten-Leur
Persistently calling despite being blocked, causing significant frustration
Looks like a legit masseur in the gooi area, they offeer massages at home.
A vague message was played by NL Communicatie, persistently asking for my email address with the claim that sending an email would resolve the issue
Second-hand company
This number is associated with Paagman Den Haag B.V. in Den Haag.
EDU recruitment and selection in Strijbeek
This is my number, but i just recieved a call from somone i didnt call myself. <br />If you call my number back, i will answer because its my bussines number. <br />I work as a recruiter, so i will probaby ask if you are looking for a job. ;-) <br />But if you tell me when my number called you, i can tell you if it was a Spoofing call or not. <br />Its really irritant, but aparently we cant do enything about it! <br />Have a nice day. <br />Best regards, <br />Ernst
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.