Source note · Call blocking and analytics labeling remediation
A terminating provider that blocks calls based on any analytics program, itself or through a third-party blocking service, must immediately return an appropriate response code to the call's origination point, and every voice service provider in the call path must transmit it.
Checked 2026-09-24
must immediately return, and all voice service providers in the call path must transmit, an appropriate response code to the origination point of the call
- Vendor
- FCC
- Product
- 47 CFR 64.1200
- Subsystem
- blocking-notification
- Deployment
- pstn
- Region
- us
- Release range
- as amended by FCC 25-15
- Checked
- 2026-09-24
Sources
- 47 CFR § 64.1200 - Delivery restrictions — Legal Information Institute, Cornell Law School (reproducing the eCFR) · tier 1 standards and regulators · § 64.1200(k)(9), lead-in
Cite this note
APA
WarmTransfer. (2026, September 24). Call blocking and analytics labeling remediation: source note call-blocking-labeling-response-code-k9. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-blocking-labeling-response-code-k9
BibTeX
@misc{warmtransfer-claim-call-blocking-labeling-response-code-k9,
title = {Call blocking and analytics labeling remediation: source note call-blocking-labeling-response-code-k9},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/call-blocking-labeling-response-code-k9},
note = {Source note call-blocking-labeling-response-code-k9, checked 2026-09-24}
}