Cytracom is continuing a planned migration of UCaaS accounts to our upgraded platform and infrastructure.
No action is required if: - You are using ControlOne, or - You have already updated your firewall and QoS settings to allow the required IP ranges below.
Action Required (if not using ControlOne): Please ensure the following IP ranges are allowed on your firewall prior to the maintenance window: - 64.58.110.0/23 (64.58.110.1 – 64.58.111.254) - 3.208.72.128/27 (3.208.72.128 – 3.208.72.158)
MSP Partners: Please verify these settings for your customers.
Customers: Please contact your MSP or IT provider to confirm these IP ranges are allowed.
Exception: If you have devices that were manually configured or self-provisioned outside of Cytracom's provisioning service, update the registration servers to: - reg.cmh1.uc.cytracom.net - kr1.cytracom.net
Completing these steps in advance will help prevent service interruptions, call failures, and registration issues following migration.
Posted Jun 23, 2026 - 20:00 CDT
This scheduled maintenance affects: Voice Services (Call Completion).