International phone number requirements

See also

Sources

1. 1
   BEREC maintains, under the European Electronic Communications Code, a database of E.164 number ranges that may be used extraterritorially in the EU/EEA. Its records hold country codes, number ranges, number lengths and links to national conditions.

   Numbering Database for extra territorial use · Numbering Database for extra territorial use - page body · Checked 2026-09-25
2. 2
   BEREC describes the extraterritorial-use database as covering numbers for non-interpersonal communications services such as mobile internet access and M2M/IoT, not interpersonal voice services.

   Numbering Database for extra territorial use · Paragraph defining non-interpersonal communications services · Checked 2026-09-25
3. 3
   The Bundesnetzagentur states that a German area code (Ortsnetzkennzahl) allows an inference about the geographic location of the network access.

   Ortsnetze · Rufnummernstruktur section · Checked 2026-09-25
4. 4
   The Bundesnetzagentur states that when providers pass local-network numbers (Ortsnetzrufnummern) on to customers, the number's local-network link (Ortsnetzbezug) must be strictly observed, and wrongly allocated numbers must be disconnected.

   Zuteilungsverfahren (Ortsnetzrufnummern) · Zuteilungsverfahren page - paragraph on abgeleitete Zuteilung · Checked 2026-09-25
5. 5
   The Bundesnetzagentur names Verfügung 25/2006 as the legal basis for local-network numbers and publishes a consolidated version valid from 30 July 2026.

   Ortsnetze · Rechtsgrundlage section · Checked 2026-09-25
6. 6
   For Cisco Calling Plan orders, Belgium requires proof of local address dated within 3 months; the Netherlands requires that plus a company registration document; Poland requires a company registration document and the authorising person's passport or ID card.

   Get Started with the Cisco Calling Plans · Order New Phone Numbers - Belgium, Netherlands, Poland · Checked 2026-09-25
7. 7
   Cisco states that the regulatory documents requested for Cisco Calling Plan number orders are legally required by country regulators for its number provisioning team to procure the numbers.

   Get Started with the Cisco Calling Plans · Order New Phone Numbers - regulatory documentation statement · Checked 2026-09-25
8. 8
   For Cisco Calling Plans, an Emergency Service Address is mandatory in PSTN setup and applies by default to all numbers at the location; per-number ESA customisation is only available when the user is in the US or Canada.

   Get Started with the Cisco Calling Plans · Emergency Service Address section · Checked 2026-09-25
9. 9
   Cisco states that toll-free numbers with Cisco Calling Plans are currently available only for US and Canada locations and cannot be ordered as a block.

   Get Started with the Cisco Calling Plans · Toll-free numbers section · Checked 2026-09-25
10. 10
    Providers disagree on whether a German local number needs a business registration document. RingCentral's table shows Business Registration: No for Germany local, while Twilio requires a commercial register excerpt or equivalent and Zoom requires proof of entity.disputed

    RingCentral International Numbers Number Order Requirements · Requirements table - Germany local row, Business Registration column · Checked 2026-09-25
11. 11
    German toll-free numbers are allocated directly by the Bundesnetzagentur, and Twilio requires a copy of the allocation letter (Zuteilungsbescheid) plus an address in Germany.

    Germany: Phone Number Regulatory Guidelines · Toll-Free - Individual and Business · Checked 2026-09-25
12. 12
    How recent a German proof-of-address document must be depends on the provider: Zoom says no older than 3 months, Microsoft's Germany page accepts a utility bill up to 6 months old, and Microsoft's tenant-level KYC accepts documents up to 12 months old.inferred

    Germany phone number requirements · General note on documents (compared with Microsoft pages listed in corroborated_by) · Checked 2026-09-25
13. 13
    For Microsoft Calling Plans, every country's emergency address needs building number, street, city, postal code, latitude, longitude and company name. Some countries also require a company tax ID, including Belgium, Italy, the Netherlands, Poland, Spain and Sweden.

    Manage emergency locations · Required information for Microsoft Calling Plans - list and country table · Checked 2026-09-25
14. 14
    To activate a Microsoft 365 phone number in Belgium, France, Germany, Ireland, the Netherlands or Spain, the emergency location address must match the number's area code.

    Manage emergency locations · Add an emergency location - Note · Checked 2026-09-25
15. 15
    Microsoft states that number usage types and the rules and ordering instructions for getting numbers vary by country or region, and it publishes country-specific pages for 32 countries and regions.

    Get Microsoft Calling Plan telephone numbers for your organization · Acquiring new numbers by country or region and request forms · Checked 2026-09-25
16. 16
    For Microsoft Calling Plan orders in Germany, orders of more than 100 numbers per location need formal Bundesnetzagentur approval attached to the order.

    Phone number management for Germany · Acquiring New Numbers from Microsoft Teams - 'What information and documents do I need to provide for my new number order?' · Checked 2026-09-25
17. 17
    Microsoft gives Germany new-number lead times of up to 4 business days if numbers are in stock and up to 90 business days if they must be ordered, and port times of 15 to 30 business days.

    Phone number management for Germany · Acquiring New Numbers - 'How much time will it take...'; Porting - 'How long will it take...' · Checked 2026-09-25
18. 18
    Microsoft Calling Plans in Germany do not offer mobile numbers or extensions, and do not support partial porting.

    Phone number management for Germany · Acquiring New Numbers - Miscellaneous information; Porting - 'Can I port some but not all of my phone numbers?' · Checked 2026-09-25
19. 19
    For Microsoft Calling Plan new-number and port orders in Germany, the customer must supply a utility bill no older than 6 months showing the company name and address.

    Phone number management for Germany · Acquiring New Numbers and Porting Existing Numbers tables - documents row · Checked 2026-09-25
20. 20
    For Microsoft Calling Plans, an emergency location is required when a number is assigned to a user in the US and Canada, but when the number is acquired from Microsoft or ported in for EMEA and other countries.

    Considerations for Calling Plans · Emergency call enablement for Calling Plans · Checked 2026-09-25
21. 21
    Microsoft documents that emergency calling is not supported for Microsoft Calling Plans in Japan.

    Considerations for Calling Plans · Emergency call routing for different countries/regions - Japan row · Checked 2026-09-25
22. 22
    Microsoft KYC primary supporting documents must be dated within the past 12 months and remain valid for at least two months from the date of submission.

    Teams Phone Know Your Customer overview · Step 3: Upload Supporting Documents - List of accepted Supporting Documents · Checked 2026-09-25
23. 23
    Microsoft KYC domain verification requires the registrar's official paid invoice for the domain (as a PDF); a purchase or renewal confirmation email is not accepted.

    Teams Phone Know Your Customer overview · List of accepted Supporting Documents - Domain Verification row · Checked 2026-09-25
24. 24
    For Microsoft KYC the verifying email must belong to an authorised individual on the verified company domain; distribution lists, free email providers (such as Gmail, Outlook.com, Yahoo, iCloud) and the default onmicrosoft.com domain are not accepted.

    Teams Phone Know Your Customer overview · Step 1: Verify email address and domain - Note · Checked 2026-09-25
25. 25
    Microsoft requires one KYC verification per tenant regardless of how many global sites the organisation has, and a separate submission for each additional tenant.

    Teams Phone Know Your Customer overview · FAQ: Our organization operates across multiple global site locations... · Checked 2026-09-25
26. 26
    Microsoft states that in some countries and regions Know Your Customer (KYC) verification is a prerequisite for acquiring or porting telephone numbers, and that National Regulatory Authorities set the information required.

    Teams Phone Know Your Customer overview · Introduction (paragraphs before 'Setting up KYC in your Teams admin center') · Checked 2026-09-25
27. 27
    The Microsoft Teams Phone KYC article applies to Microsoft Calling Plans, and KYC is submitted in the Teams admin center under Voice > Service configuration > Know Your Customer.

    Teams Phone Know Your Customer overview · APPLIES TO banner; 'Setting up KYC in your Teams admin center' · Checked 2026-09-25
28. 28
    Microsoft says most KYC reviews finish within three business days; the KYC statuses are Draft, Submitted, Action Required, Approved and Rejected.

    Teams Phone Know Your Customer overview · Step 4: Submit - Note; KYC status definitions table · Checked 2026-09-25
29. 29
    Microsoft's KYC submission has four steps in order: verify email address, provide business information, upload supporting documents, submit.

    Teams Phone Know Your Customer overview · Setting up KYC in your Teams admin center - step list · Checked 2026-09-25
30. 30
    To acquire telephone numbers from Microsoft a tenant must have at least one Microsoft Calling Plan license assigned.

    Get Microsoft Calling Plan telephone numbers for your organization · Introduction of 'Get Microsoft Calling Plan telephone numbers for your organization' · Checked 2026-09-25
31. 31
    Microsoft documents that in Germany, France, Spain, Italy, Belgium and several other countries, the address registered to a number is stored in a national emergency database that the PSAP looks up from the caller's CLI.

    Considerations for Calling Plans · Emergency call routing for different countries/regions - rows Belgium, Denmark, France, Germany, Italy, Slovakia, Spain, Sweden, Switzerland · Checked 2026-09-25
32. 32
    Microsoft documents that in Austria, the Netherlands and Portugal emergency calls are routed to the PSAP by the location area code or first digits of the caller's number.

    Considerations for Calling Plans · Emergency call routing for different countries/regions - rows Austria, Netherlands, Portugal · Checked 2026-09-25
33. 33
    In Microsoft Teams, assigning an emergency location requires the location, the users and the phone numbers to all be in the same country.

    Manage emergency locations · Assign an emergency location · Checked 2026-09-25
34. 34
    In some countries or regions Microsoft numbers can only be obtained via Support; the Teams admin center then opens a support request automatically, and the order shows as type Search with status Manual.

    Get Microsoft Calling Plan telephone numbers for your organization · Get new phone numbers - step 5 Note and closing Note · Checked 2026-09-25
35. 35
    Microsoft allows a tenant as many user (subscriber) numbers as its Domestic and International Calling Plan licenses times 1.1, plus 10, plus one per pay-as-you-go license. Ported numbers do not count toward this limit.

    Get Microsoft Calling Plan telephone numbers for your organization · How many telephone numbers can you get? - User (subscriber) number row and Important note · Checked 2026-09-25
36. 36
    In Microsoft Teams, an emergency address that has been validated cannot be edited; the admin must delete the location and create a new one.

    Manage emergency locations · Change an emergency location · Checked 2026-09-25
37. 37
    RingCentral lists Japan and Brazil local numbers as needing a local physical address, a copy of ID and additional forms; Japan also needs business registration and Brazil a tax ID.

    RingCentral International Numbers Number Order Requirements · Requirements table - Japan and Brazil local rows · Checked 2026-09-25
38. 38
    RingCentral says provisioning an international number takes 7 to 10 business days on average.

    International numbers frequently asked questions · FAQ on how long it takes to get an international number · Checked 2026-09-25
39. 39
    Twilio Regulatory Bundle statuses are Draft, Pending Review, In Review, Twilio Approved and Twilio Rejected.

    Phone Number Regulatory FAQ · FAQ: What are the different statuses? · Checked 2026-09-25
40. 40
    For a German local number, Twilio requires a business address within the locality or region covered by the number's prefix, and a P.O. Box is not acceptable.

    Germany: Phone Number Regulatory Guidelines · Local - Business - Address requirement · Checked 2026-09-25
41. 41
    For a German local number Twilio accepts a commercial register excerpt (Handelsregisterauszug), a trade licence or a tax notification letter, plus a registration number, VAT ID or tax number.

    Germany: Phone Number Regulatory Guidelines · Local - Business - Required documents and Business registration number · Checked 2026-09-25
42. 42
    For a German mobile number Twilio requires a business address within Germany that matches the official registration document, and a P.O. Box is not acceptable.

    Germany: Phone Number Regulatory Guidelines · Mobile - Business - Address requirement · Checked 2026-09-25
43. 43
    Through Twilio, German local numbers and German mobile numbers are not available to individuals, only to businesses.

    Germany: Phone Number Regulatory Guidelines · Local - Individual; Mobile - Individual · Checked 2026-09-25
44. 44
    Twilio states it will disconnect phone numbers for unmet regulatory requirements only when there is no other legal option available.

    Phone Number Regulatory FAQ · FAQ: What if I can't meet requirements? · Checked 2026-09-25
45. 45
    Twilio states that each country's regulator requires phone number regulatory compliance because a phone number is a national resource.

    Getting Started: Phone Number Regulatory Compliance · Introductory section of Getting Started: Phone Number Regulatory Compliance · Checked 2026-09-25
46. 46
    Twilio does not accept a document showing a P.O. Box or virtual address as proof of a local address.

    Phone Number Regulatory FAQ · FAQ: Can I use a P.O. Box or Virtual Address? · Checked 2026-09-25
47. 47
    Twilio explains that some regulators require local or national numbers to be tied to an address within the locality of the number's prefix.

    Phone Number Regulatory FAQ · FAQ: Why assign addresses matching phone prefix locality? · Checked 2026-09-25
48. 48
    Twilio states that if compliance information is not updated the bundle moves to rejected and phone numbers assigned to non-compliant information are at risk of regulatory reclamation.

    Phone Number Regulatory FAQ · FAQ: What happens if I don't update compliance information? · Checked 2026-09-25
49. 49
    Twilio's Regulation API resource can be listed by IsoCountry, NumberType and EndUserType, and EndUserType takes the values individual or business.

    Regulation Resource · Read multiple Regulation resources - query parameters · Checked 2026-09-25
50. 50
    A Twilio Regulation returns two kinds of requirements: end_user information fields and accepted supporting_document types.

    Regulation Resource · Regulation Properties - requirements · Checked 2026-09-25
51. 51
    Twilio aims to verify submitted documents within 24 business hours and to review regulatory bundles within 72 hours.

    Phone Number Regulatory FAQ · FAQ: How long does it take Twilio to verify documents? and FAQ on bundles pending longer than 72 hours · Checked 2026-09-25
52. 52
    Zoom's Germany requirements say all documents provided must be current, legible, authentic and not older than 3 months.

    Germany phone number requirements · General note on documents · Checked 2026-09-25
53. 53
    For German mobile numbers Zoom additionally requires a company website or social media link and company representative details.

    Germany phone number requirements · Required documents - Mobile · Checked 2026-09-25
54. 54
    Zoom requires a valid address in Germany matching the desired area code for German toll (geographic) numbers; for toll-free, any address in Germany; for mobile, an address in Germany.

    Germany phone number requirements · Address requirements for Toll, Toll-free and Mobile number types · Checked 2026-09-25
55. 55
    Zoom states that a PSTN call handled by a Zoom Phone India user may be mixed only with internal Zoom Phone users under conditions that include, for BYOC, extensions in the same SDCA and corporate network.

    Zoom Phone India Overview · Regulatory restrictions - call mixing · Checked 2026-09-25
56. 56
    Zoom states that Zoom Phone India (Native) is classified as internet telephony and does not support emergency calling on ZPI mobile numbers.

    Zoom Phone India Overview · Emergency calling limitation · Checked 2026-09-25
57. 57
    Zoom states that PSTN calls handled by Zoom Phone India users, or by auto receptionists or call queues for India numbers, cannot be automatically forwarded to non-India PSTN numbers.

    Zoom Phone India Overview · Regulatory restrictions - auto-forwarding · Checked 2026-09-25
58. 58
    Zoom requires every end user assigned a Zoom India mobile number to complete individual KYC before activation, for example via Aadhaar through DigiLocker or a driver's licence.

    Zoom Phone India Overview · End user requirements · Checked 2026-09-25
59. 59
    Zoom lists illegible or missing documents and a mismatch between the portal address and the document address as reasons for KYC rejection.

    Creating a business address verification with Know Your Customer (KYC) · Rejection reasons section · Checked 2026-09-25
60. 60
    Zoom says customers should hear from its processing team within 2 working days of submitting a KYC business address application, which shows as Pending until then.

    Creating a business address verification with Know Your Customer (KYC) · Section on application status after submission · Checked 2026-09-25

Documents

Cite this page

WarmTransfer. (2026, September 25). International phone number requirements. WarmTransfer. https://warmtransfer.net/knowledge/international-number-requirements

@misc{warmtransfer-international-number-requirements,
  title  = {International phone number requirements},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/international-number-requirements},
  note   = {Verified 2026-09-25}
}