Enter a number in E.164 format (for example +441952612345)
The prefix +31 4399 serves the region of Maastricht.
The prefix +31 4399 is operated by "KPN".
The area code location is mapped at (50.8579855, 5.6969882).
Searching a number prefix can reveal carrier and location info from Ringbat's database.
Country: 🇳🇱 NL
Country Code: +31
Carrier: KPN
Prefix: 4399
Location: Maastricht
Coords: 50.8579855, 5.6969882
Area Code Page: +31 4399
Comments: Disabled for area-code pages
Example: +31 4399 *** ***
If you have a full number, use the search box above to view the number-specific page.
+31 4399 is an area code/prefix that appears to be associated with Maastricht. It may be assigned to multiple phone numbers within that region.
Yes — use Ringbat's number search to look up a full number. This area-code page helps when only part of a number is known.
Carrier information for this prefix: KPN. In some cases multiple carriers may use similar prefixes.
Reverse lookups allow you to see who is calling, whether it’s a friend, business, or spam.
Lookups help you prevent spam calls and identify important or suspicious contacts.
Community reports make unknown calls easier to understand.
Pro tip: Checking comments can help you avoid unwanted calls.
Ringbat supports lookups for numbers worldwide, not just local calls.
Area codes give clues about where the call originated.
Copyright © 2025 Ringbat. International Reverse Phone Number Lookup. Legal / DMCA