AT&T Office@Hand

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AT&T Office@Hand Network Updates
Article #12242

There are incoming updates to the AT&T Office@Hand networking requirements which may require adjusting the Access Control List rules of your network firewall. In order to maintain service please ensure the following Fully Qualified Domain Names (FQDNs) and hostnames/IP addresses are whitelisted for the indicated Office@Hand devices, applications, and services (unless not used).   

Addresses are highlighted to indicate updates.   

This document only shows partial information of AT&T Office@Hand Network requirements. For the complete details, go to AT&T Office@Hand Network Requirements.     

AT&T Office@Hand Supernets  

The following supernets (concatenated subnets) are owned and used by AT&T Office@Hand for unified communication:

AT&T Office@Hand Supernets
80.81.128.0/20
103.44.68.0/22
104.245.56.0/21
185.23.248.0/22
192.209.24.0/21
199.68.212.0/22
208.87.40.0/22

AT&T Office@Hand Domains and IP Addresses  

AT&T Office@Hand uses these networks globally for call servers, media services, route announcements, and auxiliary services, like telephone provisioning and network time. It is highly recommended to permit all these networks at all enterprise locations for the specific regions.

Table 6. Whitelisting of Domains and IP Addresses
  Cloud Service Domain/IP Address and Ports to be whitelisted
Domain/IP Address Ports
NOTE: AT&T Office@Hand URLs will be migrated to .biz, but in the meantime, include BOTH the .com AND .biz (ex. pp­pre.ringcentral.com AND pp­pre.ringcentral.biz) domains on your whitelist.
AT&T Office@Hand Service Web AT&T Office@Hand Configuration Portal https://service-officeathand.att.com/ 443
AT&T Office@Hand Live Reports AT&T Office@Hand Analytics Portal https://analytics.officeathand.att.com/
IP address 35.186.207.208
443
Polycom Desk Phones and Conference Phones Provisioning

pp.pre.ringcentral.biz
(pp-pre.ringcentral.com)

pp.ringcentral.biz
(pp.ringcentral.com)

443
Firmware Update pp.s3.ringcentral.biz
(pp.s3.ringcentral.com)
Cisco Desk Phones Provisioning

cp-pre.ringcentral.biz
(cp-pre.ringcentral.com)

cp.ringcentral.biz
(cp.ringcentral.com)

Firmware Update cp.s3.ringcentral.biz
(cp.s3.ringcentral.com)
Yealink Desk Phones Provisioning

yp-pre.ringcentral.biz
(yp-pre.ringcentral.com)

yp.ringcentral.biz
(yp.ringcentral.com)

Firmware Update yp.ringcentral.biz
(yp.ringcentral.com)
Desktop Softphone Application & Mobile Application Presence, Call Log Notifications, and Voicemail notifications *.pubnub.com
*.pubnub.net
*.pndsn.com
80 and 443
Softphone Archiver Box It is assumed that the enterprise has already whitelisted the appropriate domains to allow access to Box 443
sftp IP address of the enterprise sftp server 22
Google Chrome Extension Google Account account.google.com 443
Chrome APIs for plugins apis.google.com
Fonts used by Google Chrome fonts.gstatic.com
AT&T Office@Hand Meetings RingCentral Meetings meetings.ringcentral.biz
(meetings.ringcentral.com)

webinar.ringcentral.biz
(webinar.ringcentral.com)
*.zoom.us
*.cloudfront.net (for firmware and software updates)**

443
Telephone Client Application using the RingCentral Connect Platform API Production API platform.ringcentral.biz
(platform.ringcentral.com)
443
Mobile and Desktop applications Updates and Configurations downloads.ringcentral.biz
(downloads.ringcentral.com)
*cloudfront.net
80 and 443
AT&T Office@Hand API Production API api.ringcentral.biz
(api.ringcentral.com)
443