Mexican business phone number
A landline reserved for companies registered with the SAT, a mobile open to foreign companies.
Local and mobile, document by document
Required documents, local and mobile
Mexican local number
+52 · For businesses only
Required address
Local address, within the area code’s zone
The company’s address must be in the city or region covered by the area code of the chosen number. A PO box is not accepted.
To provide
- Constancia de Situación FiscalDocumentIssued by the SAT, the Mexican tax authority: it proves the company’s name.
- Proof of address within the area code’s zoneDocumentAny of: the Constancia de Situación Fiscal if it shows this address, an energy, water or telecom bill less than 12 months old, or a government letter less than 12 months old. A PO box is not accepted.
Mexican mobile number
+52 · For businesses only
Required address
Address anywhere in the world
The company’s address can be anywhere in the world, with proof. A PO box is not accepted.
To provide
- Proof of the company’s existenceDocumentFor a Mexican company, the Constancia de Situación Fiscal, which shows the RFC. For a foreign company, its articles of incorporation or the registration document from its own country (for example the Kbis extract in France).
- Proof of the company’s addressDocumentAny of: an energy, water or telecom bill, or a government letter. A PO box is not accepted.
- RFCTo enterThe Mexican tax ID, 12 characters long for a company. A foreign company enters the generic code XEXX010101000.
- Public websiteTo enterOr a verified social media account of the company.
- Authorised representative’s IDDocumentGovernment-issued ID or passport, in their name.
- Representative’s emailTo enterAliases are not accepted; a personal address may lead to additional checks.
- Proof of the representative’s authorityDocumentThe registration document or articles of incorporation if they name them, otherwise a notarised power of attorney (poder notarial) signed by a director or officer named there.
Mexican mobile numbers are reserved for person-to-person communication: automated (A2P) traffic is blocked by local carriers.
Indicative list updated on 15 October 2026. Requirements are set by each country’s authorities and may change; the exact list is confirmed when you order the number.
Getting a Mexican virtual phone number for your business
Mexico City, Guadalajara, Monterrey: a +52 number shows your Mexican prospects a domestic call. Since the numbering reform, every number in the country, landline or mobile, has 10 digits.
For a landline, the company’s address must be within the area code’s zone, and the Constancia de Situación Fiscal, issued by the SAT (the tax authority), proves the company exists. In practice, you need a company on the Mexican tax register.
For a mobile, the address can be anywhere in the world: a foreign company provides its articles of incorporation or registration document and enters a generic RFC. The application is fuller (website, the representative’s ID and email, proof of their authority), and these numbers are reserved for person-to-person communication.
Country code and number format
- Local (landline)
- +52 +52, then 10 digits: a 2-digit area code for the largest cities (55 or 56 Mexico City, 33 Guadalajara, 81 Monterrey), 3 digits elsewhere, then the number. Example: +52 55 1234 5678.
- Mobile
- +52 Same 10-digit format as landlines: +52, then 10 digits, without the 1 formerly added after +52. Example: +52 33 1234 5678.
What you need to know
Ten digits everywhere
10-digit dialling has applied since 3 August 2019, and the old 01, 044 and 045 prefixes have been removed. From abroad, the 1 formerly added after +52 to reach a mobile is no longer needed. The IFT, which set this plan, was replaced in October 2025 by the Comisión Reguladora de Telecomunicaciones (CRT).
Mobiles for person-to-person communication
Mexican mobile numbers are reserved for person-to-person communication: local carriers block automated (A2P) traffic on this number type.
The RFC and the Constancia
The RFC (Registro Federal de Contribuyentes) is the tax ID issued by the SAT, 12 characters long for a company. It appears on the Constancia de Situación Fiscal. A foreign company without an RFC enters the generic code XEXX010101000.
Call prospects in Mexico with a local number
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