Grayscale Help Center

SMS Phone Number Availability & Registration Requirements

We've compiled regulatory and compliance information to help ensure you're communicating effectively and compliantly around the world.

Written by Sam Abello

Updated over 3 weeks ago

SMS works differently in every country. This guide is intended to help navigate each available country's registration requirements.

Australia 🇦🇺

ISO code: AU
Alpha-3 code: AUS
Dialing code: +61

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Commercial registry or equivalent
Business Address (May be anywhere in the world)	Proof of Address	Commercial register showing address Utility bill Tax notice Rent receipt Title deed
Business ID Number (ABN if registered in Australia)	Proof of Business ID	Commercial registry or equivalent

Austria 🇦🇹

ISO code: AT
Alpha-3 code: AUT
Dialing code: +43

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from company book or registration
Business Address (Must be within Austria)	Proof of Austrian Address	Excerpt from company book or registration showing Austrian address Utility bill Tax notice Rent receipt Title deed
Name of Authorized Representative	Proof of Identity	Government-issued ID Passport Bank confirmation of identity

Belgium 🇧🇪

ISO code: BE
Alpha-3 code: BET
Dialing code: +32

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register (extrait BCE)
Business Address (May be anywhere in the world)	Proof of Address	Excerpt from the commercial register (extrait BCE) Utility bill Tax notice Rent receipt Title deed
Business Registration Number	Proof of Business Registration Number	Excerpt from the commercial register (extrait BCE)
VAT number (or business registration number if VAT number not available)	NA	NA

Brazil 🇧🇷

ISO code: BR
Alpha-3 code: BRA
Dialing code: +55

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register
Business Address (Must be within Brazil)	Proof of Brazilian Address	Excerpt from the commercial register showing Brazilian address Utility bill Tax notice Rent receipt Title deed

Canada 🇨🇦

ISO code: CA
Alpha-3 code: CAN
Dialing code: +1

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
NA	NA	NA

Chile 🇨🇱

ISO code: CL
Alpha-3 code: CHL
Dialing code: +56

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register
Business Address (Must be within Chile)	Proof of Chilean Address	Excerpt from the commercial register showing Chilean address Utility bill Tax notice Rent receipt Title deed

Czechia (Czech Republic) 🇨🇿

ISO code: CZ
Alpha-3 code: CZE
Dialing code: +420

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the business register
Business Address (May be anywhere in the world)	NA	NA
Business ID Number	NA	NA
Name of Authorized Representative	Proof of Identity	- Government issued ID - Passport
Authorization of Authorized Representative	Proof that representative is authorized to act on behalf of the business	- Power of attorney - Other documentation showing the individual is a director or country manager for the business
Address of Authorized Representative	NA	NA

Denmark 🇩🇰

ISO code: DK
Alpha-3 code: DNK
Dialing code: +45

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	NA	NA
Business Address (Must be within Denmark)	NA	NA

Estonia 🇪🇪

ISO code: EE
Alpha-3 code: EST
Dialing code: +372

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Extract from the commercial register
Business Address (May be anywhere in the world)	NA	NA

Finland 🇫🇮

ISO code: FI
Alpha-3 code: FIN
Dialing code: +358

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	NA	NA
Business Address (May be anywhere in the world)	NA	NA

France 🇫🇷

ISO code: FR
Alpha-3 code: FRA
Dialing code: +3393903

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register (Extrait K-bis) showing name of Authorized Representative
Business Address (Must be within France)	Proof of French Address	- Excerpt from the commercial register showing French address - Utility bill - Tax notice - Rent receipt - Title deed
Business Registration Number	Proof of Business Registration Number	Excerpt from the commercial register (Extrait K-bis)
Name of Authorized Representative	Proof of Identity*	- Government-issued ID - Passport - Residence permit

Germany 🇩🇪

ISO code: DE
Alpha-3 code: DEU
Dialing code: +49

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register (Handelsregisterauszug)
Business Address (Must be within Germany)	Proof of German Address	Excerpt from the commercial register (Handelsregisterauszug) showing matching address
German VAT Number	NA	NA
Business Registration Number	Proof of Business Registration Number	Excerpt from the commercial register (Handelsregisterauszug) showing Business Registration Number

Hong Kong 🇭🇰

ISO code: HK
Alpha-3 code: HKG
Dialing code: +852

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business Registration Certificate
Business Address	Proof of Address (must show name to demonstrate addressee is business)	Correspondence with government departments (no more than 3 months old): - Business Registration Certificate Correspondence with banks or financial institutions (no more than 3 months old): - Bank statement - Credit card account statement Correspondence with public utilities (no more than 3 months old): - Electricity bill - Water bill - Gas bill Correspondence with operators of public telecommunications services: - Mobile telecommunications service bill - Fixed telephone service bill - Internet access service bill - Pay TV service bill
Business Registration Number	Proof of Business Registration number	Business Registration

Hungary 🇭🇺

ISO code: HU
Alpha-3 code: HUN
Dialing code: +36

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	NA	NA
Registered Seat	NA	NA
Business Address (Must be within Hungary)	Proof of Hungarian Address	- Extract from the commercial register or business registration showing Hungarian address - Utility bill - Tax notice- Rent receipt - Title deed
Invoicing Address (If different)	NA	NA
Business Registration Number	NA	NA
Contact Information (business email or mailing address)	NA	NA

Ireland 🇮🇪

ISO code: IE
Alpha-3 code: IRL
Dialing code: +353

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business Registry
Business Address (Must be within Ireland)	NA	NA

Israel 🇮🇱

ISO code: IL
Alpha-3 code: ISR
Dialing code: +972

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
NA	NA	NA

Italy 🇮🇹

ISO code: IT
Alpha-3 code: ITA
Dialing code: +39

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	NA	NA
Business Address (May be anywhere in the world)	Proof of Address	- Business registry showing the address - Utility bill - Tax notice - Rent receipt - Title deed
VAT (or Business Registration ID, if VAT is unavailable)	NA	NA
Name of Authorized Representative	Proof of Identity	- Government-issued ID (must include the ID number, issuing authority, and issue date) - Passport (must include the ID number, issuing authority, and issue date)
Date of Birth of Authorized Representative	NA	NA
Place of Birth of Authorized Representative	NA	NA
Fiscal Code of Authorized Representative (Tax ID or equivalent such as Social Security Number in the US)	NA	NA
Nationality of Authorized Representative	NA	NA

Lithuania 🇱🇹

ISO code: LT
Alpha-3 code: LTU
Dialing code: +370

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business registration
Business Address (May be anywhere in the world)	NA	NA
Business Registration Number	Proof of Business Registration Number	Business registration

Netherlands 🇳🇱

ISO code: NL
Alpha-3 code: NLD
Dialing code: +31

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	NA	NA
Business Address (May be anywhere in the world)	NA	NA

Norway 🇳🇴

ISO code: NO
Alpha-3 code: NOR
Dialing code: +47

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business registration
Business Address (May be anywhere in the world)	Proof of Address	- Business registration showing the address - Utility bill
Business Registration Number	Proof of Identity	Business registration
Name of Authorized Representative	Proof of Identity	- Government-issued ID with picture - Passport
Authorization of Authorized Representative	Proof that representative is authorized to act on behalf of the company	- Power of attorney - Other official documentation such as the commercial registry identifying the person as a country manager and an authorized representative

Poland 🇵🇱

ISO code: PL
Alpha-3 code: POL
Dialing code: +48

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from a relevant business register (for example, the National Court Register or business activity register)
Business Address (May be anywhere in the world)	NA	NA
Business Registration Number	Proof of Business Registration Number	Excerpt from a relevant business register such as: - National ID (REGON) - National Tax ID (NIP) - National Court Register (KRS) - Business activity register
Name of Authorized Representative	NA	NA
Authorization of Authorized Representative	Proof that representative is authorized to act on behalf of the company	- Power of attorney - Other official documentation identifying the person as an authorized representative (for example, a commercial registry identifying the individual as a country manager)

Portugal 🇵🇹

ISO code: PT
Alpha-3 code: PRT
Dialing code: +351

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial register
Business Address (Must be within Portugal)	Proof of Portuguese Address	Excerpt from the commercial register showing Portuguese address
Business Tax Number (for example, VAT)	Proof of Business Tax Number	Government-issued ID showing tax number

Puerto Rico (US) 🇵🇷

ISO code: PR
Alpha-3 code: PRI
Dialing code: +1

US A2P 10DLC

Brand Registration Requirements

Information Required	Documentation Required	Example(s)
Business Name	NA
Business Contact Email	NA
Business Website	NA
Business Address (May be anywhere in the world)	NA
Business Registration Number	NA
Business Registration Type	NA
Operating Regions	NA
Industry	NA

Campaign Registration Requirements

Information Required	Description	Example(s)
Opt-in / Call-to-Action	1. This field should describe how and when a consumer opt-in to the campaign, therefore giving consent to the sender to receive their messages.The call-to-action must be explicitly clear and inform end users of the campaign. If multiple opt-in methods can be used for the same, please list them all. 2. If you indicate that a website is used for opt-in, please provide a link to website. Website needs to have Privacy Policy and Terms of Service. 3. If you indicate that opt-in is collected through a paper form or behind a login, please provide a hosted link to image of your opt-in form.	OPT-IN FOR TEXT MESSAGES: Would you like to Opt-in to receive text messages about jobs at [Company Name]? Please answer with Yes or No. (required)
Sample Messages	1. Sample messages should reflect actual messages to be sent under campaign and indicate templated fields with brackets. 2. Ensure that at least one sample message includes your business name. 3. Ensure consistency with use case and campaign description. 4. Include opt-out language to at least 1 sample message	1. Hey {{profile.first_name}}! This is {{recruiter.first_name}} with [company name]. We've reviewed your application for {{position}} and would like to schedule a phone interview! Look forward to hearing from you! - {{recruiter.first_name}} Reply STOP to opt-out 2. Hi {{ profile.first_name }}, Thank you for applying to careers at [company name]! We've received your application and will be in touch shortly after reviewing it. We appreciate your interest in working with us! If you have questions, feel free to text back on this number to reach us quickly! Reply STOP to unsubscribe.
Link to your company’s career site	How can your applications be accessed?	https://boards.greenhouse.io/grayscale
Link to hosted image of opt-in question	How to find the URL (link) of a page or image - Google users - Microsoft users	https://drive.google.com/file/d/1Nv2nSulYavR1OY2zqgIFF3Jq33oLN-2H/view
Web Privacy Policy	Privacy Policy needs to include a statement of non-sharing for mobile numbers, message frequency, and “message and data rates may apply” disclosure. Privacy Policy template available here.	https://grayscaleapp.com/about/privacy-policy/
Web Terms of Use/Terms & Conditions	Provide publicly accessible terms of service. Terms of Service template available here.	https://grayscaleapp.com/about/terms-of-use/ Example Verbiage: Text Messages We may send text messages you have consented to receive. Message frequency may vary. You can cancel text messages at any time by texting "STOP". After you send "STOP", we may send you an additional text message to confirm that you have been unsubscribed. You will no longer receive text messages from that phone number, or from any member of our team. If at any time you have questions about the text messages, text "HELP". After you send "HELP" we will respond with instructions on how to use our service as well as how to unsubscribe. Message and data rates may apply.

Slovakia 🇸🇰

ISO code: SK
Alpha-3 code: SVK
Dialing code: +421

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business registration
Business Address (May be anywhere in the world)	NA	NA
Registered Seat	Proof of Registered Seat	Business registration
Business Registration Number	Proof of Business Registration Number	Business registration
Name of Authorized Representative	Proof of Identity	Government-issued IDPassport
Authorization of Authorized Representative	Proof that representative is authorized to act on behalf of the company	- Power of attorney - Other documentation showing the individual is a director or country manager for the business

South Africa 🇿🇦

ISO code: ZA
Alpha-3 code: ZAF
Dialing code: +27

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	- Business registration - Certified photocopy of business letterhead or other similar document containing the Business Registration Number so the business registration can be verified in reference to this document
Business Address (Must be within South Africa)	Proof of South African Address	- Bank statement - Municipal rates or tax invoice - Recent telephone account statement - New motor vehicle license
Name of Authorized Representative	Proof of Identity	Government-issued ID (must include photo, full name, and identity number)
Address of Authorized Representative	NA	NA
Identity Number of Authorized Representative	Proof of Identity Number	Government-issued ID (must include photo, full name, and identity number)
Nationality of Authorized Representative	NA	NA
Business Registration Number	Proof of Business Registration Number	- Business registration - Certified photocopy of business letterhead or other similar document containing the Business Registration Number to verify the business registration

Spain 🇪🇸

ISO code: ES
Alpha-3 code: ESP
Dialing code: +34

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Business registration
Spanish Fiscal Identification NumberCIF (Código de Identificación Fiscal)	Proof of Spanish Fiscal Identification Number	Business registration
Business Address (Must be within Spain)	Proof of Address	- Business registration showing address - Utility bill - Tax notice - Rent receipt - Title deed

Sweden 🇸🇪

ISO code: SE
Alpha-3 code: SWE
Dialing code: +467

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
NA	NA	NA

Switzerland 🇨🇭

ISO code: CH
Alpha-3 code: CHE
Dialing code: +41

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity	Excerpt from the commercial or official business register
Address of Registered Office (May be anywhere in the world)	Proof of Registered Office Address	Excerpt from the commercial or official business register
Unternehmens-Identifikationsnumber (UID) for Swiss entities	NA	NA

United Kingdom 🇬🇧

ISO code: GB
Alpha-3 code: GBR
Dialing code: +44

Registration Requirements

Information Required	Documentation Required	Acceptable Documentation (One of the following from each section)
Business Name	Proof of Identity (Documentation is required for businesses *not* using a UK Companies House Registration Number)	Excerpt from the commercial register
Registration Authority	Proof of Identity (Documentation is required for businesses *not* using a UK Companies House Registration Number)	Excerpt from the commercial register
Business Registration Number (CRN)	Proof of Identity (Documentation is required for businesses *not* using a UK Companies House Registration Number)	Excerpt from the commercial register
Business Website	NA	NA
Business Address (Must be a valid address. May be anywhere in the world)	NA	NA
Emergency Address (if different from Business Address) (Must be a valid address. May be anywhere in the world)	NA	NA
*Authorized Representative’s Name**	NA	NA
Authorized Representative’s Phone Number This must be a valid mobile number only where the customer can be reached.	NA	NA
Authorized Representative’s Work Email	NA	NA

United States of America 🇺🇸

ISO code: US
Alpha-3 code: USA
Dialing code: +1

US A2P 10DLC

Brand Registration Requirements

Information Required	Documentation Required	Example(s)
Business Name	NA
Business Contact Email	NA
Business Website	NA
Business Address (May be anywhere in the world)	NA
Business Registration Number	NA
Business Registration Type	NA
Operating Regions	NA
Industry	NA

Campaign Registration Requirements

Information Required	Description	Example(s)
Opt-in / Call-to-Action	1. This field should describe how and when a consumer opt-in to the campaign, therefore giving consent to the sender to receive their messages.The call-to-action must be explicitly clear and inform end users of the campaign. If multiple opt-in methods can be used for the same, please list them all. 2. If you indicate that a website is used for opt-in, please provide a link to website. Website needs to have Privacy Policy and Terms of Service. 3. If you indicate that opt-in is collected through a paper form or behind a login, please provide a hosted link to image of your opt-in form.	OPT-IN FOR TEXT MESSAGES: Would you like to Opt-in to receive text messages about jobs at [Company Name]? Please answer with Yes or No. (required)
Sample Messages	1. Sample messages should reflect actual messages to be sent under campaign and indicate templated fields with brackets. 2. Ensure that at least one sample message includes your business name. 3. Ensure consistency with use case and campaign description. 4. Include opt-out language to at least 1 sample message	1. Hey {{profile.first_name}}! This is {{recruiter.first_name}} with [company name]. We've reviewed your application for {{position}} and would like to schedule a phone interview! Look forward to hearing from you! - {{recruiter.first_name}} Reply STOP to opt-out 2. Hi {{ profile.first_name }}, Thank you for applying to careers at [company name]! We've received your application and will be in touch shortly after reviewing it. We appreciate your interest in working with us! If you have questions, feel free to text back on this number to reach us quickly! Reply STOP to unsubscribe.
Link to your company’s career site	How can your applications be accessed?	https://boards.greenhouse.io/grayscale
Link to hosted image of opt-in question	How to find the URL (link) of a page or image - Google users - Microsoft users	https://drive.google.com/file/d/1Nv2nSulYavR1OY2zqgIFF3Jq33oLN-2H/view
Web Privacy Policy	Privacy Policy needs to include a statement of non-sharing for mobile numbers, message frequency, and “message and data rates may apply” disclosure. Privacy Policy template available here.	https://grayscaleapp.com/about/privacy-policy/
Web Terms of Use/Terms & Conditions	Provide publicly accessible terms of service. Terms of Service template available here.	https://grayscaleapp.com/about/terms-of-use/ Example Verbiage: Text Messages We may send text messages you have consented to receive. Message frequency may vary. You can cancel text messages at any time by texting "STOP". After you send "STOP", we may send you an additional text message to confirm that you have been unsubscribed. You will no longer receive text messages from that phone number, or from any member of our team. If at any time you have questions about the text messages, text "HELP". After you send "HELP" we will respond with instructions on how to use our service as well as how to unsubscribe. Message and data rates may apply.