Verify Netherlands Phone Numbers - Country Code +31
Our phone number lookup tool above instantly verifies whether a phone number belongs to Netherlands by analyzing its country code and number format. Netherlands phone numbers use the country code +31 and follow an 9 digits national format.
| Country: |  Netherlands (NL, NLD) |
|---|---|
| Country Calling Code: | +31 |
| National Number Format: | 9 digits |
| Example Number: | +31 6 12345678 |
| International Dialing Prefix: | 00 |
| National Trunk Prefix: | 0 |
| Time Zone (UTC/DST): | +1/+2 |
| Regulator: | Autoriteit Consument & Markt (ACM) |
Find Phone Numbers in Netherlands Directories
Looking for a specific company's contact information? Use trusted local business directories to find phone numbers and addresses.
Telefoonboek.nl
Comprehensive White Pages for people and businesses in Netherlands; in Dutch. Enter what service or company or the person you're looking for Wie/wat zoekt u? and an optional location Waar and then click on Zoeken (search). When the results are shown select the contact you want and click on Telefoonnummer tonen - show number. To search for businesses use the Bedrijf tab and for people, Persoon.
De Telefoongids
Alphabetic Yellow Pages telephone directory of people and businesses in the Netherlands. In Dutch. Put who or what you're looking for in war/wie and location (if needed) in waar and click zoek.
Reverse Phone Lookup
Stop wondering who called! Enter any phone number to instantly get detailed information.
Identify Dutch Mobile Operator
Reverse phone lookup results may include which mobile operator issued a phone number. Mobile numbers are usually issued by one of the following operators:
KPN
MCCMNC code: 20408, 20410, 20412, 20418, 20469
Vodafone
MCCMNC code: 20404
T-Mobile
MCCMNC code: 20416, 20402, 20420
Calling from Netherlands to the United States
To call United States from Netherlands, follow this exact dialing sequence:
00 + 1 + Area Code + 7-digit phone number
- 00 - Netherlands's international access code
- 1 - United States country code
- Area Code - Specific U.S. area code
- 7-digit number - The local phone number
Example: To call (312) 555-0123 from Netherlands, dial: 00 1 312 555 0123
Useful tip: Stop costly calling mistakes by checking phone number ownership through this US reverse lookup database. If you know you should be calling to a specific U.S. city, let's say New York, then you should use phone number lookup tool for New York, New York, or its area codes (212, 646, 332, 917, 718, 347, 929).
Netherlands National Numbering Plan (Country Code +31)
International Access
| Number Range | Destination/Service | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 00 | International access code | 2 | Available for allocation | No |
Geographic Numbers - Area Codes
| Area Code | Geographic Area | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 010 | Rotterdam | 10 | Available for allocation | No |
| 0111 | Zierikzee | 10 | Available for allocation | No |
| 0113 | Goes | 10 | Available for allocation | No |
| 0114 | Holly | 10 | Available for allocation | No |
| 0115 | Terneuzen | 10 | Available for allocation | No |
| 0117 | Eastburg | 10 | Available for allocation | No |
| 0118 | Middleburg | 10 | Available for allocation | No |
| 013 | Tilburg | 10 | Available for allocation | No |
| 015 | Delft | 10 | Available for allocation | No |
| 0161 | Rows | 10 | Available for allocation | No |
| 0162 | Eastwood | 10 | Available for allocation | No |
| 0164 | Bergen op Zoom | 10 | Available for allocation | No |
| 0165 | Roosendaal | 10 | Available for allocation | No |
| 0166 | Tholen | 10 | Available for allocation | No |
| 0167 | Steenbergen | 10 | Available for allocation | No |
| 0168 | Sevenbergen | 10 | Available for allocation | No |
| 0172 | Alphen a/d Rijn | 10 | Available for allocation | No |
| 0174 | Needle District | 10 | Available for allocation | No |
| 0180 | IJssel cities | 10 | Available for allocation | No |
| 0181 | Spijkenisse | 10 | Available for allocation | No |
| 0182 | Gouda | 10 | Available for allocation | No |
| 0183 | Gorinchem | 10 | Available for allocation | No |
| 0184 | Sliedrecht | 10 | Available for allocation | No |
| 0186 | Old Beijerland | 10 | Available for allocation | No |
| 0187 | Middleharnis | 10 | Available for allocation | No |
| 020 | Amsterdam | 10 | Available for allocation | No |
| 0222 | The Burg | 10 | Available for allocation | No |
| 0223 | The Helder | 10 | Available for allocation | No |
| 0224 | Schagen | 10 | Available for allocation | No |
| 0226 | North Scharwoude | 10 | Available for allocation | No |
| 0227 | Middle Lake | 10 | Available for allocation | No |
| 0228 | Enkhuizen | 10 | Available for allocation | No |
| 0229 | Horn | 10 | Available for allocation | No |
| 023 | Haarlem | 10 | Available for allocation | No |
| 024 | Nijmegen | 10 | Available for allocation | No |
| 0251 | Beaverwijk | 10 | Available for allocation | No |
| 0252 | Hillegom | 10 | Available for allocation | No |
| 0255 | IJmuiden | 10 | Available for allocation | No |
| 026 | Arnhem | 10 | Available for allocation | No |
| 0294 | Weesp | 10 | Available for allocation | No |
| 0297 | Outhorn | 10 | Available for allocation | No |
| 0299 | Purmerend | 10 | Available for allocation | No |
| 030 | Utrecht | 10 | Available for allocation | No |
| 0313 | Animals | 10 | Available for allocation | No |
| 0314 | Doetinchem | 10 | Available for allocation | No |
| 0315 | Terborg | 10 | Available for allocation | No |
| 0316 | Sevenaar | 10 | Available for allocation | No |
| 0317 | Wageningen | 10 | Available for allocation | No |
| 0318 | Ede | 10 | Available for allocation | No |
| 0320 | Lelystad | 10 | Available for allocation | No |
| 0321 | Dronten | 10 | Available for allocation | No |
| 033 | Amersfoort | 10 | Available for allocation | No |
| 0341 | Harderwijk | 10 | Available for allocation | No |
| 0342 | Barneveld | 10 | Available for allocation | No |
| 0343 | Thorn | 10 | Available for allocation | No |
| 0344 | Tiel | 10 | Available for allocation | No |
| 0345 | Culemborg | 10 | Available for allocation | No |
| 0346 | Maarsen | 10 | Available for allocation | No |
| 0347 | Vianen | 10 | Available for allocation | No |
| 0348 | Woerden | 10 | Available for allocation | No |
| 035 | Hilversum | 10 | Available for allocation | No |
| 036 | Almere | 10 | Available for allocation | No |
| 038 | Zwolle | 10 | Available for allocation | No |
| 040 | Eindhoven | 10 | Available for allocation | No |
| 0411 | Boxtel | 10 | Available for allocation | No |
| 0412 | Oss | 10 | Available for allocation | No |
| 0413 | Veghel | 10 | Available for allocation | No |
| 0416 | Waalwijk | 10 | Available for allocation | No |
| 0418 | Zaltbommel | 10 | Available for allocation | No |
| 043 | Maastricht | 10 | Available for allocation | No |
| 045 | Heerlen | 10 | Available for allocation | No |
| 046 | Sittard | 10 | Available for allocation | No |
| 0475 | Roermond | 10 | Available for allocation | No |
| 0478 | Venray | 10 | Available for allocation | No |
| 0481 | Bemmel | 10 | Available for allocation | No |
| 0485 | Cuyk | 10 | Available for allocation | No |
| 0486 | Grave | 10 | Available for allocation | No |
| 0487 | Druten | 10 | Available for allocation | No |
| 0488 | To make | 10 | Available for allocation | No |
| 0492 | Helmond | 10 | Available for allocation | No |
| 0493 | Deurne | 10 | Available for allocation | No |
| 0495 | Weert | 10 | Available for allocation | No |
| 0497 | Eersel | 10 | Available for allocation | No |
| 0499 | Best | 10 | Available for allocation | No |
| 050 | Groningen | 10 | Available for allocation | No |
| 0511 | Peat forests | 10 | Available for allocation | No |
| 0512 | Drachten | 10 | Available for allocation | No |
| 0513 | Heerenveen | 10 | Available for allocation | No |
| 0514 | Beam | 10 | Available for allocation | No |
| 0515 | Sneek | 10 | Available for allocation | No |
| 0516 | Eastwolde | 10 | Available for allocation | No |
| 0517 | Franeker | 10 | Available for allocation | No |
| 0518 | St. Annaparochie | 10 | Available for allocation | No |
| 0519 | Dokkum | 10 | Available for allocation | No |
| 0521 | Steenwijk | 10 | Available for allocation | No |
| 0522 | Meppel | 10 | Available for allocation | No |
| 0523 | Dedemsvaart | 10 | Available for allocation | No |
| 0524 | Coevorden | 10 | Available for allocation | No |
| 0525 | Elburg | 10 | Available for allocation | No |
| 0527 | Emmeloord | 10 | Available for allocation | No |
| 0528 | High eveen | 10 | Available for allocation | No |
| 0529 | Ommen | 10 | Available for allocation | No |
| 053 | Enschede | 10 | Available for allocation | No |
| 0541 | Oldenzaal | 10 | Available for allocation | No |
| 0543 | Winterswijk | 10 | Available for allocation | No |
| 0544 | Greenlo | 10 | Available for allocation | No |
| 0545 | Neede | 10 | Available for allocation | No |
| 0546 | Almelo | 10 | Available for allocation | No |
| 0547 | Goor | 10 | Available for allocation | No |
| 0548 | Rijssen | 10 | Available for allocation | No |
| 055 | Apeldoorn | 10 | Available for allocation | No |
| 0561 | Wolvega | 10 | Available for allocation | No |
| 0562 | West Terschelling | 10 | Available for allocation | No |
| 0566 | Irnsum | 10 | Available for allocation | No |
| 0570 | Deventer | 10 | Available for allocation | No |
| 0571 | Twello | 10 | Available for allocation | No |
| 0572 | Raalte | 10 | Available for allocation | No |
| 0573 | Lochem | 10 | Available for allocation | No |
| 0575 | Zutphen | 10 | Available for allocation | No |
| 0577 | Uddel | 10 | Available for allocation | No |
| 0578 | Epe | 10 | Available for allocation | No |
| 058 | Leeuwarden | 10 | Available for allocation | No |
| 0591 | Emmen | 10 | Available for allocation | No |
| 0592 | Assen | 10 | Available for allocation | No |
| 0593 | Beilen | 10 | Available for allocation | No |
| 0594 | Southhorn | 10 | Available for allocation | No |
| 0595 | Warffum | 10 | Available for allocation | No |
| 0596 | Appingedam | 10 | Available for allocation | No |
| 0597 | Winschoten | 10 | Available for allocation | No |
| 0598 | High sand | 10 | Available for allocation | No |
| 0599 | City Canal | 10 | Available for allocation | No |
| 070 | The Hague | 10 | Available for allocation | No |
| 071 | To lead | 10 | Available for allocation | No |
| 072 | Alkmaar | 10 | Available for allocation | No |
| 073 | 's-Hertogenbosch | 10 | Available for allocation | No |
| 074 | Hengelo | 10 | Available for allocation | No |
| 075 | Zaandam | 10 | Available for allocation | No |
| 076 | Breda | 10 | Available for allocation | No |
| 077 | Venlo | 10 | Available for allocation | No |
| 078 | Dordrecht | 10 | Available for allocation | No |
| 079 | Zoetermeer | 10 | Available for allocation | No |
Network Technical Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 01400 | Routing calls to numbers in the 14 range and network technical services consisting of routing calls to other numbers in the 1 range | Not exactly | Available for allocation | No |
| 01401... to 01411... | Network technical network internal services | Not exactly | Available for allocation | No |
| 01412... | Network technical services consisting of routing calls to the number 112 | Not exactly | Available for allocation | No |
| 01413... to 01499... | Network technical network internal services | Not exactly | Available for allocation | No |
European Telephone Number Space Routing
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 0440 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0441 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0442 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0443 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0444 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | No |
| 0445 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0446 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0447 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0448 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
| 0449 | Routing for calls to numbers in the European telephone number space | 6 to 14 | Available for allocation | - |
Mobile Services and Data Access
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 061 | Mobile telephony | 10 | Available for allocation | No |
| 062 | Mobile telephony | 10 | Available for allocation | No |
| 063 | Mobile telephony | 10 | Available for allocation | No |
| 064 | Mobile telephony | 10 | Available for allocation | No |
| 0650... to 0655... | Mobile telephony | 10 | Available for allocation | No |
| 0656... to 0659... | Semaphony; being phased out. From January 1, 2006 mobile telephony | 10 | Available for allocation | No |
| 066 | Semaphony | 10 | Available for allocation | No |
| 0670... to 0675... | Videotex and access to data services on other networks | 6, 10 | Available for allocation | No |
| 06760... | Access to Internet Protocol based networks and services | 10 | Available for allocation | No |
| 06761... to 06769... | - | - | Not available for allocation | - |
| 0677... to 0679... | Videotex and access to data services on other networks | 6 | Available for allocation | No |
| 068 | Mobile Telephony | 10 | Available for allocation | No |
Free Information Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 0800-0... to 0800-3... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 8, 11 | Available for allocation | No |
| 0800-400... to 0800-405... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 11 | Available for allocation | No |
| 0800-406... | Free information services, without traffic charges | 11 | Available for allocation | No |
| 0800-407... to 0800-409... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 11 | Available for allocation | No |
| 0800-41... | Free information services, without traffic charges | 8 | Available for allocation | No |
| 0800-42... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 11 | Available for allocation | No |
| 0800-43... | Free information services, without traffic charges | 8 | Available for allocation | No |
| 0800-44... to 0800-45... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 11 | Available for allocation | No |
| 0800-46... | Free information services, without traffic charges | 8 | Available for allocation | No |
| 0800-47... to 0800-48... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 11 | Available for allocation | No |
| 0800-49... | Free information services, without traffic charges | 8 | Available for allocation | No |
| 0800-5... to 0800-9... | Free information services, without traffic charges, with the exclusion of: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 8, 11 | Available for allocation | No |
Other Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 082 | Virtual private networks | Not exactly | Available for allocation | No |
| 084 | Personal assistant services, for both fixed and mobile applications, excluding: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call; entertainment services; forward to the aforementioned services. | 10 | Available for allocation | No |
| 085 | Public electronic communications services | 10 | Available for allocation | No |
| 087 | Personal assistant services, for both fixed and mobile applications, excluding: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call; entertainment services; forward to the aforementioned services. | 10 | Available for allocation | No |
| 088 | Access to companies and institutions, for both fixed and mobile applications, that do not provide services of an erotic, sexual or pornographic nature or that refer (in)directly to them, or services whose main purpose is to extend the duration of the call, or entertainment services are provided, or paid services are provided by the number holder/number user that are charged via the telephone bill. Furthermore, forwarding to the aforementioned services is excluded. | 10 | Available for allocation | Yes, for a period of six months after the entry into force of this decision. |
Information Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 0900 | Free or paid information services, excluding: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; entertainment services or those that refer to them (in)directly; services whose main purpose is to extend the duration of the call | 8, 11 | Available for allocation | No |
| 0906 | Free or paid information services | 8, 11 | Available for allocation | No |
| 0909 | Free or paid information services, excluding: services of an erotic, sexual or pornographic nature or that refer (in)directly to them; services whose main purpose is to extend the duration of the call | 8, 11 | Available for allocation | No |
| 091 | Public electronic communications services | 10 | Available for allocation | No |
| 0970... to 0978... | 1. Electronic communication services for automated applications 2. Other electronic communication services | 12 | Available for allocation | No |
Special Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 10... | Carrier selection service - Number that allows a user of a public telephone service to have the outgoing data transport necessary for that service provided by another provider of a public telephone service. The user can make use of this option by dialing the number referred to here immediately preceding the number that would normally have sufficed. | 5 | Available for allocation | No |
| 106... | Carrier selection service | 5 | Not available for allocation | - |
| 110 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
| 111 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
| 112 | European emergency number | 3 | Available for allocation | No |
| 113 | Harmonized European Short Numbers. Helpline in the context of suicide prevention, which meets the conditions of Annex 5, as long as no European harmonisation has taken place. The number can be assigned to multiple applicants. | 3 | Available for allocation | No |
| 114 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
| 115 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
| 116... | European harmonised services of social interest which meet the conditions of Annex 4. The same number can be assigned to multiple applicants. | 6 | Available for allocation | No |
| 116000 | Missing children hotlines | 6 | Available for allocation | No |
| 116001 to 116005 | - | 6 | Not available for allocation | - |
| 116006 | Crime Victim Helpline | 6 | Available for allocation | No |
| 116007 to 116115 | - | 6 | Not available for allocation | - |
| 116016 | Helpline for victims of violence against women | 6 | Available for allocation | No |
| 116017 to 116110 | - | 6 | Not available for allocation | - |
| 116111 | Child helplines | 6 | Available for allocation | No |
| 116112 to 116116 | - | 6 | Not available for allocation | - |
| 116117 | Telephone helpline for non-emergency medical assistance | 6 | Available for allocation | No |
| 116118 to 116122 | - | 6 | Not available for allocation | - |
| 116123 | Emotional Support Hotlines | 6 | Available for allocation | No |
| 116124 to 116999 | - | 6 | Not available for allocation | - |
| 117 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
| 119 | Harmonized European Short Numbers | 3 | Not available for allocation | - |
Customer Service Numbers
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 1200 | Access to customer service for all customer categories | 4 | Available for allocation | No |
| 1201 to 1204 | Access to customer service for a category of customers to be determined by the provider | 4 | Available for allocation | No |
| 1205 to 1232 | - | 4 | Not available for allocation | - |
| 1233 | Access to the electronic mailbox directly connected to the subscriber's connection | 4 | Available for allocation | No |
| 1234 | Voice dialing (dialing by means of speech recognition) | 4 | Available for allocation | No |
| 1235 to 1243 | - | 4 | Not available for allocation | - |
| 1244 | Actions and settings for prepaid telephony | 4 | Available for allocation | No |
| 1245 to 1299 | - | 4 | Not available for allocation | - |
Network Support Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 1300 to 1309 | Numbers for services supporting the public telephone service itself and for access to network local facilities for users of a network | 4 | Available for allocation | No |
| 131 | Harmonized number preceding a telephone number for blocking caller ID when calling that telephone number | 3 | Available for allocation | No |
| 132 | Harmonized number preceding a telephone number for unblocking caller ID when calling that telephone number | 3 | Available for allocation | No |
| 1330 to 1399 | Numbers for services supporting the public telephone service itself and for access to network local facilities for users of a network | 4 | Available for allocation | No |
Government Contact Centers
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 1400 | Contact center of the central government | 4 | Available for allocation | No |
| 1401 to 1405 | Municipal contact centres | 5, 6 | Available for allocation | No |
| 1407.. | Municipal contact centres | 5 | Available for allocation | No |
| 14080 to 14087 | - | 5 | Not available for allocation | - |
| 14088 | Government Contact Center for Businesses | 5 | Available for allocation | No |
| 1410 to 1419 | Contact centres of other government organisations | 4 | Available for allocation | No |
| 1420 to 1439 | - | 4 | Not available for allocation | - |
| 144 | National emergency number for animals in need | 3 | Available for allocation | No |
| 1440 to 1499 | - | 4 | Not available for allocation | - |
Carrier Selection and Directory Services
| Number Range | Service Description | Number Length | Allocation Status | Economic Value |
|---|---|---|---|---|
| 16 | Carrier selection service - Number that allows a user of a public telephone service to have the outgoing data transport necessary for that service provided by another provider of a public telephone service. The user can make use of this option by dialing the number referred to here immediately preceding the number that would normally have sufficed. | 4 | Available for allocation | No |
| 1818 | Access to free or paid subscriber information services, which at least allow telephone numbers to be retrieved on the basis of data concerning the name in combination with data concerning the subscriber's address and house number, postcode or place of residence, and which allow additional publicly available general information about the subscriber's name, address or location, accessibility and service provision on the basis of search terms provided by the caller. | 4 | Available for allocation | - |
Phased Out Numbers
| Number Range | Status |
|---|---|
| 2 | Use is being phased out |
| 3 | Use is being phased out |
| 4 | Use is being phased out |
| 5 | Use is being phased out |
| 6 | Use is being phased out |
| 7 | Use is being phased out |
| 8 | Use is being phased out |
| 9 | Use is being phased out |
Special Notes
Important Information
- Videotex Numbers: The numbers have 6 digits except the numbers starting with 067-281, 067-284 and 067-364 which consist of 10 digits.
- Internal Network Use: The 0979 series is not allocated and is kept free for internal network use. The series is not part of the numbering plan.
- Number Length Variations: Where "Not exactly" is specified for number length, this indicates that the exact length may vary depending on the specific service implementation.
- Geographic Areas: All geographic numbers (area codes) have a standard length of 10 digits total including the area code.
- Emergency Services: 112 is the European emergency number available throughout the Netherlands.
- Mobile Services: Mobile numbers in the 06x range are 10 digits in total length.
- Free Services: 0800 numbers provide free calling for the caller, with various restrictions on content types.
- Information Services: 0900 series provides both free and paid information services with content restrictions.
Contact Information
Regulatory Authority: Dutch Telecommunications Authority
Source: wetten.overheid.nl - BWBR0010198