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FCC Sets Deadline for DNO Call Blocking: Are You Ready for December 15?

September 16, 2025 By Andrew

Introduction

The waiting is over. Yesterday the FCC finally dropped a firm deadline like a mic at a press conference — or rather the Federal Register did.

As of December 15, 2025, all US-based voice service providers are required to block calls based on a “reasonable Do Not Originate” list — part of the FCC’s ongoing fight against illegal robocalls.

If your network isn’t set up to block those calls? You could be in breach of federal regulations.

What’s behind the change?

This requirement stems from the FCC’s Eighth Report and Order, which gives teeth to the idea of using DNO lists to proactively block spoofed calls. The logic is simple: if a number should never originate calls (think inbound-only numbers like the IRS), then any attempt to use it as a caller ID is probably malicious.

The FCC isn’t creating its own list but instead allows carriers to rely on reasonable third-party DNO lists — like those managed by the Industry Traceback Group.

What you’re required to do

No later than December 15, 2025, voice service providers must:

  • Block calls that are highly likely to be illegal based on caller ID.
  • Implement blocking using a reasonable DNO list.
  • Maintain updated DNO data to ensure ongoing compliance.

How Award Consulting can help

We now offer a fully managed DNO Compliance Service tailored for Metaswitch-based networks.

Here’s what’s included:
✅ Licensed access to the DNO list (we’ve secured the license on your behalf)
✅ CFS configuration to block both the DNO list and unallocated prefixes
✅ Quarterly updates to keep your system in sync

If you’re already a retainer client of Award Consulting then we have a special deal for you, or we can offer this service a-la-carte. Please contact us about your situation and we’ll get you a proposal ASAP.

No hassle. No delays. Just compliance — on time and done right.

Ready to check this off your compliance list?

If you’re a client, just reply to this email and we’ll get you scheduled. If you’re not a client yet — let’s talk. We’re already helping many regional carriers stay ahead of STIR/SHAKEN and robocall enforcement, and we’d love to support your team too.

Contact us here if you’d like help before the deadline rush begins.

About Andrew

Award Consulting is focused on helping ILECs and CLECs who use Metaswitch products to thrive as they improve their networks through migrations, strategic projects and improved service offerings.

Our goal is to create highly specific, highly valuable content targeted specifically at US regional service providers, and especially those who are running Metaswitch equipment. Join our email list to be notified of new content.

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Our goal is to create highly specific, highly valuable content targeted specifically at US regional service providers, and especially those who are running Metaswitch equipment. Join our email list to be notified of new content.



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