--- title: How can I see the RFC associated with the e.firma/FIEL that I have? description: Checking the information of your e.firma such as the associated RFC is very easy from your computer. --- [Skip to content](https://guia.mifiel.com/en/how-can-i-see-the-rfc-associated-with-the-e.firma/fiel-that-i-have#main-content) - [English](https://guia.mifiel.com/en/how-can-i-see-the-rfc-associated-with-the-e.firma/fiel-that-i-have) - [Español](https://guia.mifiel.com/es/ver-rfc-efirma) English Show submenu for translations [![Mifiel logo](https://guia.mifiel.com/hs-fs/hubfs/mifiel_logo.png?width=152&height=30&name=mifiel_logo.png)](https://www.mifiel.com/en/) Open main navigation Close main navigation - - [English](https://guia.mifiel.com/en/how-can-i-see-the-rfc-associated-with-the-e.firma/fiel-that-i-have) - [Español](https://guia.mifiel.com/es/ver-rfc-efirma) English Show submenu for translations Hi! How can we help you? - There are no suggestions because the search field is empty. 1. [Frequently Asked Questions](https://guia.mifiel.com/en?hsLang=en) 2. [Document signing](https://guia.mifiel.com/en/document-signing?hsLang=en) 3. [Features of the e.firma](https://guia.mifiel.com/en/document-signing?hsLang=en#features-of-the-e-firma) # How can I see the RFC associated with the e.firma/FIEL that I have? ## Checking the information of your e.firma such as the associated RFC is very easy from your computer You can visualize the RFC (tax ID) associated with your FIEL from your computer. This way, if you handle more than one e.firma (your individual one and one or more from legal entities where you are their legal representative), you will be able to know which one belongs to what person or entity. ### **Contents** 1. [Process in Mac](https://guia.mifiel.com/en/how-can-i-see-the-rfc-associated-with-the-e.firma/fiel-that-i-have#mac) 2. [Process in Windows](https://guia.mifiel.com/en/how-can-i-see-the-rfc-associated-with-the-e.firma/fiel-that-i-have#windows) --- ### **Process in Mac** 1. Open Finder. 2. Find your e.firma files. 3. Click once on the .cer file. 4. Press the spacebar on your keyboard. A small window will open, there you will be able to visualize your e.firma information. 5. In the “Name of the subject” section, the “Unique identifier” is the RFC associated with that e.firma. 6. Press the spacebar on your keyboard to exit the visualization window. ### **Process in Windows** 1. Open the file explorer. 2. Find your e.firma files. 3. Double-click on the .cer file. 4. Click “Open”. From now on, try not to modify anything since it could corrupt the file. 5. Click the “Details” tab. 6. In the table, look for “Subject” and click it once. 7. In the visualization screen under the table, you will find the RFC. It’s the second on the list next to a number sequence and the “=” symbol. 8. Press the “x” on the top right corner of the screen to exit. - [Document signing](https://guia.mifiel.com/en/document-signing?hsLang=en#main-content) - [How to sign a document using the e.firma in Mifiel](https://guia.mifiel.com/en/document-signing?hsLang=en#how-to-sign-a-document-using-the-e-firma-in-mifiel) - [Features of the e.firma](https://guia.mifiel.com/en/document-signing?hsLang=en#features-of-the-e-firma) - [Common errors](https://guia.mifiel.com/en/document-signing?hsLang=en#common-errors) - [Document preparation](https://guia.mifiel.com/en/document-preparation?hsLang=en#main-content) - [Invite signers](https://guia.mifiel.com/en/document-preparation?hsLang=en#invite-signers) - [Customize the characteristics of a document](https://guia.mifiel.com/en/document-preparation?hsLang=en#customize-the-characteristics-of-a-document) - [Document management](https://guia.mifiel.com/en/document-management?hsLang=en#main-content) - [General](https://guia.mifiel.com/en/document-management?hsLang=en#general) - [For document managers](https://guia.mifiel.com/en/document-management?hsLang=en#for-document-managers) - [Verifying a signed document and its signatures](https://guia.mifiel.com/en/verifying-a-signed-document-and-its-signatures?hsLang=en) - [Private signing process of encrypted documents](https://guia.mifiel.com/en/private-signing-process-of-encrypted-documents?hsLang=en#main-content) - [Creation of encrypted documents](https://guia.mifiel.com/en/private-signing-process-of-encrypted-documents?hsLang=en#creation-of-encrypted-documents) - [Signing of encrypted documents](https://guia.mifiel.com/en/private-signing-process-of-encrypted-documents?hsLang=en#signing-of-encrypted-documents) - [Set up of organizations and accounts](https://guia.mifiel.com/en/private-signing-process-of-encrypted-documents?hsLang=en#set-up-of-organizations-and-accounts) - [API integration](https://guia.mifiel.com/en/api-integration?hsLang=en#main-content) - [General](https://guia.mifiel.com/en/api-integration?hsLang=en#general) - [Signing widget customizations](https://guia.mifiel.com/en/api-integration?hsLang=en#signing-widget-customizations) - [Additional features](https://guia.mifiel.com/en/api-integration?hsLang=en#additional-features) - [Plans and packets, billing and payment](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#main-content) - [Features](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#features) - [Pricing scheme](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#pricing-scheme) - [Purchasing process](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#purchasing-process) - [Billing process](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#billing-process) - [Checking your consumption](https://guia.mifiel.com/en/plans-and-packets-billing-and-payment?hsLang=en#checking-your-consumption) - [Managing your e.firma and your Mifiel account](https://guia.mifiel.com/en/managing-your-e-firma-and-your-mifiel-account?hsLang=en#main-content) - [Your Mifiel account](https://guia.mifiel.com/en/managing-your-e-firma-and-your-mifiel-account?hsLang=en#your-mifiel-account) - [Features for signers](https://guia.mifiel.com/en/managing-your-e-firma-and-your-mifiel-account?hsLang=en#features-for-signers) - [Your e.firma (FIEL)](https://guia.mifiel.com/en/managing-your-e-firma-and-your-mifiel-account?hsLang=en#your-e-firma-fiel) - [Legal topics](https://guia.mifiel.com/en/legal-topics?hsLang=en#main-content) - [Electronic signature regulations](https://guia.mifiel.com/en/legal-topics?hsLang=en#electronic-signature-regulations) - [Common questions when transitioning to electronic signature](https://guia.mifiel.com/en/legal-topics?hsLang=en#common-questions-when-transitioning-to-electronic-signature) - [Organization Management](https://guia.mifiel.com/en/organization-management?hsLang=en#main-content) - [Generating an organization in Mifiel](https://guia.mifiel.com/en/organization-management?hsLang=en#generating-an-organization-in-mifiel) - [Adding members and editing their permissions](https://guia.mifiel.com/en/organization-management?hsLang=en#adding-members-and-editing-their-permissions) - [About Mifiel](https://guia.mifiel.com/en/about-mifiel?hsLang=en#main-content) - [General information](https://guia.mifiel.com/en/about-mifiel?hsLang=en#general-information) - [Signing from the app](https://guia.mifiel.com/en/signing-from-the-app?hsLang=en) [![Chill listening crop-3](https://guia.mifiel.com/hs-fs/hubfs/logo-only-1.png?width=24&height=24&name=logo-only-1.png "Chill listening crop-3")](http://www.mifiel.com)