Set up a Google Workspace host name allowlist

When you’re setting up Google Workspace, you need to add some host names to your allowlist so Google Workspace APIs work correctly.

Important:

  • This information is subject to change without notice.
  • For product-specific information about APIs, refer to the Help Center content for that product.

Step 1: Open connectivity ports

Open the following ports:

Port Purpose
TCP port 443 (HTTPS) Access the main URLs for authentication and API call
TCP port 80 (HTTP) Allow CRL and OCSP checks (Step 4 later on this page)

Notes:

  • Depending on your setup and the application, you might need to allow additional rules.
  • If you're using a Microsoft Windows client, you might need to allow these rules on a per-application basis. For details, consult your Microsoft documentation.

Step 2: URLs to allow

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What's new?
  • January 17, 2023—Added URL for embedded YouTube videos within Google Workspace for Education services

    Since this feature was rolled back, we’ve improved performance and quality and have begun rolling it out again in August 2024. If your organization currently allows or blocks YouTube videos within Google Workspace for Education services, you need to add “youtubeeducation.com” to these allowlists or blocklists. This will preserve the way your organization uses YouTube videos within Google Workspace for Education services.

  • May 2, 2022—Added URLs for Google Chat
  • March 31, 2021—Added URLs for Google Meet and marked Google Contacts as deprecated
Top-level URLs

Allow the following URLs for Google Workspace APIs:

Purpose URL
Authentication

For more information, go to Using OAuth 2.0 for Web Server Applications.

https://accounts.google.com/o/oauth2
https://googleapis.com/oauth2
https://oauth2.googleapis.com/token
 https://accounts.google.co.[your country identifier]

For example https://accounts.google.co.jp

Main API entry point https://*.googleapis.com

(where * is any string not containing a period)

Email In addition to the main API entry point:
https://mail.google.com/mail
Contacts and Global Address List (GAL) https://google.com/m8
Google Workspace Admin Settings API https://apps-apis.google.com/a
Accounts and sign-ins https://google.com/accounts/ClientLogin
https://google.com/accounts/

 

Tip: You might also want to allow https://googleapis.com/generate_204, which can be used to check the HTTP status code (204).

(Optional) URLs for additional control

For more control, you can also allow the following URLs:

Purpose URL
More authentication URLs

You might not need all these URLs, depending on your setup.

https://accounts.google.com/o/oauth2/auth
https://accounts.google.com/o/oauth2/token
https://accounts.google.com/o/oauth2/v2/auth
https://oauth2.googleapis.com/token
https://googleapis.com/oauth2/v3/token
https://googleapis.com/oauth2/v4/token
https://googleapis.com/oauth2/v2/tokeninfo
https://googleapis.com/oauth2/v3/tokeninfo
https://accounts.google.com/o/oauth2/revoke
https://accounts.youtube.com
https://google.com
https://fonts.gstatic.com
https://ssl.gstatic.com
https://gstatic.com
https://*.googleusercontent.com/* https://scf.usercontent.goog
Gmailand thenGmail API https://mail.google.com/mail https://googleapis.com/gmail https://googleapis.com/upload/gmail
Google Calendar API https://googleapis.com/calendar
Google Chat https://chat.google.com
https://mail.google.com/chat
Google Classroom API https://classroom.googleapis.com
Google Contacts API

(Deprecated. The People API is recommended.)

https://google.com/m8/feeds
Global Address List (GAL)

Google Workspace Admin SDKand thenDomain Shared Contacts API

https://google.com/m8/feeds/gal
Google Drive APIs https://googleapis.com/drive https://googleapis.com/upload/drive
Google Drive Activity API https://googleapis.com/appsactivity
Google Meet https://*.googlevideo.com/*
https://*.youtube-nocookie.com/*
https://*.ytimg.com/*
Google Sheets API https://sheets.googleapis.com
Google Slides API https://slides.googleapis.com
Google Tasks API https://googleapis.com/tasks
Google Workspace Admin SDKand thenData Transfer API https://googleapis.com/admin/datatransfer
Google Workspace Admin SDKand thenDirectory API https://googleapis.com/admin/directory
Google Workspace Admin SDKand thenEnterprise License Manager API https://googleapis.com/apps/licensing
Google Workspace Admin SDKand thenGroups Migration API https://googleapis.com/upload/groups
Google Workspace Admin SDKand thenGroups Settings API https://googleapis.com/groups
Google Workspace Admin SDKand thenReports API https://googleapis.com/admin/reports
People API https://people.googleapis.com
Embedded YouTube videos within Google Workspace for Education services https://youtubeeducation.com

Note for Education admins: The URL for embedded YouTube videos in Google Workspace for Education services is only relevant to Google Workspace for Education administrators. You only need to add youtubeeducation.com to your allowlist or blocklist if you use a third-party service to allow or block certain domains.

Step 3: Review Google IP address ranges

Review how to find Obtain Google IP address ranges. Any of the Google URLs specified in step 2 can use the Google IP addresses.

You can also test the connection from the Google Admin Toolbox.

Step 4: Allow checks

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CRL check

A Certificate Revocation List (CRL) is a list of digital certificates revoked by the issuing Certificate Authority (CA) before their scheduled expiration date. These certificates shouldn't be trusted.

An HTTP (not HTTPS) URL on the CA website typically sends a CRL. The CRL distribution points are visible in the certificate X509v3 details.

The following are the current CRL distribution points that are in use for Google services:

  • http://crl.pki.goog
  • http://crls.pki.goog
  • http://c.pki.goog

For details, go to Google Trust Services.

OCSP check

The Online Certificate Status Protocol (OCSP) is an internet protocol used for obtaining the revocation status of an X.509 digital certificate.

The current OCSP distribution point in use for Google services is http://ocsp.pki.goog.

Related topics

 


Google, Google Workspace, and related marks and logos are trademarks of Google LLC. All other company and product names are trademarks of the companies with which they are associated.

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