31357990010 Netherlands Phone Number Lookup
The number +31 357990010 is a Netherlands unknown type. Based on the original prefix assignment, this range is associated with Colt Technology Services B.V., although portability may mean the live carrier is different.
Risk Assessment
Signals WhoseNo can infer from the number structure, nearby reports, and known scam patterns
Low Risk (18/100)
No strong scam signals were detected from the available prefix data.
Known Pattern Matches
No country-specific scam pattern was matched from the current local rule set for this number.
What To Do
If the call was unexpected, verify the caller independently before sharing private details.
Prefix Neighborhood
Other numbers in the 357 range that already have community reports.
Netherlands Activity
Recent reporting patterns across WhoseNo for this country.
Frequently Asked Questions
Everything you need to know about 31357990010
357990010 is a Netherlands unknown type with country code +31. The number prefix is associated with Colt Technology Services B.V.. WhoseNo has 2 community reports for this number.
Review the community reports above for first-hand feedback from people who were contacted by this number.
The prefix suggests the number was originally issued to Colt Technology Services B.V. (unknown). Netherlands supports number portability, so the current operator can be different from the original assignment.
357990010 belongs to Netherlands (country code +31). This country does not use area codes in a way that reveals a narrower location from the number alone.
357990010 is classified as a unknown type. WhoseNo could not confidently classify this Netherlands number from the local prefix rules currently available.
Review the reports above before calling back. If multiple users describe spam, fraud, or identity checks, treat the call as suspicious.
On iPhone, open Phone > Recents, tap the info icon next to 357990010, then choose Block this Caller. On Android, open the Phone app, select the call, open the menu, and choose Block or Report spam. If this call looks suspicious, do not share sensitive information and use the report form on this page to help other visitors.
To call 357990010 from outside Netherlands, dial your international access code or +, then 31, then the national number: +31 357990010
How To Block This Number
Device steps plus any carrier or regulator guidance available for this number
Quick Advice
Use your device’s built-in blocking tools first, then escalate to your operator or regulator if the calls continue.
Network / Regulator Options
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Additional resources to help you stay safe from unknown callers
Lookup Summary
357990010 is listed on WhoseNo as a Netherlands unknown type. The prefix is associated with Colt Technology Services B.V.. WhoseNo currently shows 2 reports for this number.
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Community Reports for 31357990010
Showing 1-2 of 2 community reports about this Netherlands number
its annoning and calling the whole time about sales to sell
its annoning and calling the whole time about sales to sell