FCC 25-15 requires every voice service provider to block calls purporting to originate from numbers on a reasonable do-not-originate list, and warns that a list omitting obvious numbers that could be added with little effort may be deemed unreasonable.

Checked 2026-09-24

A list so limited in scope that it leaves out obvious numbers that could be included with little effort may be deemed unreasonable.
Vendor
FCC
Product
FCC 25-15
Subsystem
do-not-originate
Deployment
pstn
Region
us
Release range
FCC 25-15; effectiveness of § 64.1200(o) pending
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Call blocking and analytics labeling remediation: source note call-blocking-labeling-dno-mandate. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-blocking-labeling-dno-mandate

BibTeX

@misc{warmtransfer-claim-call-blocking-labeling-dno-mandate,
  title  = {Call blocking and analytics labeling remediation: source note call-blocking-labeling-dno-mandate},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/call-blocking-labeling-dno-mandate},
  note   = {Source note call-blocking-labeling-dno-mandate, checked 2026-09-24}
}

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