Zoom advises customers whose calls still reach the old setup after 24 hours, or who want faster resolution, to ask the previous provider to remove the numbers from its network or switch.
Checked 2026-10-02
- Vendor
- Zoom
- Product
- Zoom Phone
- Subsystem
- old-provider-disconnect
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Best practices when porting numbers — Zoom · tier 2 current vendor documentation · FAQ: Why are my calls routing to my old setup after porting?
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-zoom-ask-losing-carrier. WarmTransfer. https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-zoom-ask-losing-carrier
BibTeX
@misc{warmtransfer-claim-post-port-routing-troubleshooting-zoom-ask-losing-carrier,
title = {Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-zoom-ask-losing-carrier},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-zoom-ask-losing-carrier},
note = {Source note post-port-routing-troubleshooting-zoom-ask-losing-carrier, checked 2026-10-02}
}