Filtering Webex Calling traffic by IP address alone is not supported because some Webex IP address pools are dynamic and can change at any time.

Checked 2026-09-24

Filtering Webex Calling traffic using IP addresses alone isn't supported as some of the IP address pools are dynamic and may change at any time.
Vendor
Cisco
Product
Webex Calling
Subsystem
firewall
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Network readiness assessment for cloud calling: source note network-readiness-assessment-wxc-ip-only-filter. WarmTransfer. https://warmtransfer.net/knowledge/claims/network-readiness-assessment-wxc-ip-only-filter

BibTeX

@misc{warmtransfer-claim-network-readiness-assessment-wxc-ip-only-filter,
  title  = {Network readiness assessment for cloud calling: source note network-readiness-assessment-wxc-ip-only-filter},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/network-readiness-assessment-wxc-ip-only-filter},
  note   = {Source note network-readiness-assessment-wxc-ip-only-filter, checked 2026-09-24}
}

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