Resources For You

  1. 5 Essential Marketing Strategies for VoIP Businesses

    5 Essential Marketing Strategies for VoIP Businesses

  2. 5 Technologies Set to Revolutionise Webphones

    5 Technologies Set to Revolutionise Webphones

  3. 5 Unique Types of VoIP Gateways Explained!

    5 Unique Types of VoIP Gateways Explained!

  4. 5 Ways a Cloud PBX System Benefits Remote Work

    5 Ways a Cloud PBX System Benefits Remote Work

  5. 5 Ways SBCs Facilitate Unified Communications as a Service

    5 Ways SBCs Facilitate Unified Communications as a Service

  6. 5 Ways to Optimise ASR To Grow Profitability

    5 Ways to Optimise ASR To Grow Profitability

  7. 7 Additional Important Components of a VoIP Carrier Network Explained

    7 Additional Important Components of a VoIP Carrier Network Explained

  8. 7 Important Factors to Consider When Implementing LCR

    7 Important Factors to Consider When Implementing LCR

  9. 7 Ways to Optimize AHT

    7 Ways to Optimize AHT

  10. 9 Key Functions of an SBC Explained

    9 Key Functions of an SBC Explained

  11. 10 Factors to Consider While Choosing a Webphone

    10 Factors to Consider While Choosing a Webphone

  12. 10 Important Components of a VoIP Carrier Network Explained

    10 Important Components of a VoIP Carrier Network Explained

  13. 10-Point Security Checklist for VoIP Carriers

    10-Point Security Checklist for VoIP Carriers

  14. 10 Tips For Effective Implementation of LCR

    10 Tips For Effective Implementation of LCR

  15. 10 Webphone Features that Benefit Your Business

    10 Webphone Features that Benefit Your Business

  16. An Out of the Box Telecoms Network

    An Out of the Box Telecoms Network

  17. Are Call Centers Still Relevant in 2023?

    Are Call Centers Still Relevant in 2023?

  18. Automated Dialler vs Manual Dialler - Knowing the 7 Key Differences

    Automated Dialler vs Manual Dialler - Knowing the 7 Key Differences

  19. Call Center vs Contact Center - Understanding the Differences

    Call Center vs Contact Center - Understanding the Differences

  20. Choosing SIP over TCP,TLS and UDP in 2022

    Choosing SIP over TCP,TLS and UDP in 2022

  21. Class 4 Softswitch vs Class 5 Softswitch - Understanding the Difference

    Class 4 Softswitch vs Class 5 Softswitch - Understanding the Difference

  22. Combatting Covid-19 with Carrier-Grade Communications Solutions to Help Users Work Remotely

    Combatting Covid-19 with Carrier-Grade Communications Solutions to Help Users Work Remotely

  23. Comprehensive Cloud Softswitch Documentation

    Comprehensive Cloud Softswitch Documentation

  24. ConnexCS expands AnyEdge SIP Load Balancer to India

    ConnexCS expands AnyEdge SIP Load Balancer to India

  25. ConnexCS for Africa

    ConnexCS for Africa

  26. ConnexCS WebPhone SDK Connector

    ConnexCS WebPhone SDK Connector

  27. Discover the Different Types of NAT: An Essential Guide for Network Administrators

    Discover the Different Types of NAT: An Essential Guide for Network Administrators

  28. Discussing the Future and Top 9 Benefits of WebRTC

    Discussing the Future and Top 9 Benefits of WebRTC

  29. DNO And DNC Lists - Everything Carriers Should Know

    DNO And DNC Lists - Everything Carriers Should Know

  30. Email and SMS Alerts

    Email and SMS Alerts

  31. Employers' Guide to Winning at Remote Work

    Employers' Guide to Winning at Remote Work

  32. Exploring the Top 10 Types of Web Phones in 2023!

    Exploring the Top 10 Types of Web Phones in 2023!

  33. False Answer Supervision Detection - The Ultimate Tool for Preventing VoIP Fraud

    False Answer Supervision Detection - The Ultimate Tool for Preventing VoIP Fraud

  34. Far-End NAT Traversal - An In-Depth Guide

    Far-End NAT Traversal - An In-Depth Guide

  35. Feature Releases for June 2024

    Feature Releases for June 2024

  36. From Cost Savings to Mobility - 15 Benefits of Web Phones for Businesses

    From Cost Savings to Mobility - 15 Benefits of Web Phones for Businesses

  37. Get Your FCC Registration Number in 5 Easy Steps!

    Get Your FCC Registration Number in 5 Easy Steps!

  38. How to Build Your API on ConnexCS

    How to Build Your API on ConnexCS

  39. How to Build Your Own Dialer (BYOD) – Part 1

    How to Build Your Own Dialer (BYOD) – Part 1

  40. How to Establish a VoIP Interconnect in 10 Easy Steps

    How to Establish a VoIP Interconnect in 10 Easy Steps

  41. How to Get Operating Company Number (OCN) in 4 Easy Steps

    How to Get Operating Company Number (OCN) in 4 Easy Steps

  42. How to Identify Robocall Scam Traffic - A Comprehensive Guide for Telecom and VoIP Operators

    How to Identify Robocall Scam Traffic - A Comprehensive Guide for Telecom and VoIP Operators

  43. How to Improve CX? Ensure your Call Center Agents are Happy!

    How to Improve CX? Ensure your Call Center Agents are Happy!

  44. How to Prepare for a VoIP Network Security Audit

    How to Prepare for a VoIP Network Security Audit

  45. How to Properly Prepare for Setting up a VoIP Interconnect

    How to Properly Prepare for Setting up a VoIP Interconnect

  46. How to Register for the Robocall Mitigation Database: A step-by-step guide!

    How to Register for the Robocall Mitigation Database: A step-by-step guide!

  47. How to Successfully Implement LCR is 5 Easy Steps

    How to Successfully Implement LCR is 5 Easy Steps

  48. How Using Web Phones Can Benefit These 10 Industries?

    How Using Web Phones Can Benefit These 10 Industries?

  49. Importance of Balancing Cost Minimization and Reliable Call Quality when implementing LCR

    Importance of Balancing Cost Minimization and Reliable Call Quality when implementing LCR

  50. Introducing ConnexCS WebPhone

    Introducing ConnexCS WebPhone

  51. Introducing ConneXML - The Best TwiML Alternative

    Introducing ConneXML - The Best TwiML Alternative

  52. Introducing Smart CLI Select - An Effective Way to Improve your ASR

    Introducing Smart CLI Select - An Effective Way to Improve your ASR

  53. LTE vs VoLTE: Diving Into The Differences

    LTE vs VoLTE: Diving Into The Differences

  54. Operating Company Numbers (OCN) - Understanding Function, Importance and Relevance

    Operating Company Numbers (OCN) - Understanding Function, Importance and Relevance

  55. Populating Our Support Area With Cloud Softswitch Video Guides

    Populating Our Support Area With Cloud Softswitch Video Guides

  56. Predictive Dialler vs Progressive Dialler - Understanding the Differences

    Predictive Dialler vs Progressive Dialler - Understanding the Differences

  57. Preview Dialler vs Power Dialler - Understanding Top 5 Differences

    Preview Dialler vs Power Dialler - Understanding Top 5 Differences

  58. Rate Card Profit Assurance

    Rate Card Profit Assurance

  59. Redundant Redundancies (Backups of backups)

    Redundant Redundancies (Backups of backups)

  60. Revolutionise Your Outbound Calls - 8 Types of VoIP Diallers Explained

    Revolutionise Your Outbound Calls - 8 Types of VoIP Diallers Explained

  61. Scalability – Grow at Speeds That Suit You

    Scalability – Grow at Speeds That Suit You

  62. ScriptForge – Javascript Routing

    ScriptForge – Javascript Routing

  63. Simplifiying our Softswitch Pricing

    Simplifiying our Softswitch Pricing

  64. SIP 101 - The Best Guide of 2022

    SIP 101 - The Best Guide of 2022

  65. The 3CX Supply Chain Attack - Understanding Everything That Happened

    The 3CX Supply Chain Attack - Understanding Everything That Happened

  66. The 5 Best Strategies for Mitigating Robocall Scams

    The 5 Best Strategies for Mitigating Robocall Scams

  67. The Anatomy of Robocall Scams

    The Anatomy of Robocall Scams

  68. The Art of Cost Optimization - Least Cost Routing and Its 7 Benefits

    The Art of Cost Optimization - Least Cost Routing and Its 7 Benefits

  69. The Best Multi-POP Cloudswitch

    The Best Multi-POP Cloudswitch

  70. The Essential Guide to Business Continuity Plans for VoIP Carriers

    The Essential Guide to Business Continuity Plans for VoIP Carriers

  71. The Essential Guide to Implementing STIR/SHAKEN

    The Essential Guide to Implementing STIR/SHAKEN

  72. The Ultimate Guide to STIR/SHAKEN

    The Ultimate Guide to STIR/SHAKEN

  73. Timeout Protections (SIP Ping, SST)

    Timeout Protections (SIP Ping, SST)

  74. TLS and 2FA Security on the ConnexCS Platform

    TLS and 2FA Security on the ConnexCS Platform

  75. Top 5 Alternative Marketing Strategies for VoIP Businesses

    Top 5 Alternative Marketing Strategies for VoIP Businesses

  76. Top 5 Call Center Challenges and How To Overcome Them

    Top 5 Call Center Challenges and How To Overcome Them

  77. Top 5 Important Types of VoIP Gateways Explained

    Top 5 Important Types of VoIP Gateways Explained

  78. Top 7 Strategies For Ensuring Call Quality While Minimizing Costs with LCR

    Top 7 Strategies For Ensuring Call Quality While Minimizing Costs with LCR

  79. Top 9 Indicators that Help You Identify a Bad Carrier

    Top 9 Indicators that Help You Identify a Bad Carrier

  80. Top 10 Points of Differences Between a Traditional and VoIP Carrier

    Top 10 Points of Differences Between a Traditional and VoIP Carrier

  81. Top 10 Types of Robocall Scams Explained!

    Top 10 Types of Robocall Scams Explained!

  82. Top 10 VoIP Vulnerabilities You Must Know About

    Top 10 VoIP Vulnerabilities You Must Know About

  83. Understanding Global RTP Servers (Lowest Latency Possible, High Availability)

    Understanding Global RTP Servers (Lowest Latency Possible, High Availability)

  84. Understanding Network Address Translation (NAT) - A Beginner's Guide

    Understanding Network Address Translation (NAT) - A Beginner's Guide

  85. Understanding the 9 Key Objectives of a VoIP Network Security Audit

    Understanding the 9 Key Objectives of a VoIP Network Security Audit

  86. Understanding the Complete Scope of a VoIP Network Security Audit

    Understanding the Complete Scope of a VoIP Network Security Audit

  87. Understanding the Crucial Role of Session Border Controllers in Carrier-Grade VoIP Networks

    Understanding the Crucial Role of Session Border Controllers in Carrier-Grade VoIP Networks

  88. Understanding VoIP Anycast Load Balancing

    Understanding VoIP Anycast Load Balancing

  89. Understanding What a PBX System is and How it Benefits Your Business

    Understanding What a PBX System is and How it Benefits Your Business

  90. VoIP Carrier Network Components - Understanding Session Border Controllers

    VoIP Carrier Network Components - Understanding Session Border Controllers

  91. VoIP Carrier Network Security - How to Conduct Security Audit?

    VoIP Carrier Network Security - How to Conduct Security Audit?

  92. VoIP Carrier's Ultimate Guide to Cleaning Up Their Traffic

    VoIP Carrier's Ultimate Guide to Cleaning Up Their Traffic

  93. VoIP Interconnects - Learning How VoIP Carrier Connect and Exchange Traffic

    VoIP Interconnects - Learning How VoIP Carrier Connect and Exchange Traffic

  94. VoLTE - An Evolution in Voice Communication

    VoLTE - An Evolution in Voice Communication

  95. WebPones Explained: Understanding Web-Based Telephonic Communication

    WebPones Explained: Understanding Web-Based Telephonic Communication

  96. WebRTC 101 - The Best Guide for Beginners

    WebRTC 101 - The Best Guide for Beginners

  97. What Are SIP Traces - A Beginners Guide

    What Are SIP Traces - A Beginners Guide

  98. What Are The Top 10 Essential Call Center KPIs?

    What Are The Top 10 Essential Call Center KPIs?

  99. What Are VoIP Gateways and How Do They Work? A Comprehensive Guide

    What Are VoIP Gateways and How Do They Work? A Comprehensive Guide

  100. What is a Contact Center and Why Does Your Business Need One?

    What is a Contact Center and Why Does Your Business Need One?

  101. What is Robocall Mitigation Database? A Guide for Carriers and VoIP Operators

    What is Robocall Mitigation Database? A Guide for Carriers and VoIP Operators

DNO And DNC Lists - Everything Carriers Should Know

Do-Not-Originate (DNO) and Do-Not-Call (DNC) lists have existed for some time now. The implementation of DNC lists is more common compared to DNO lists but that is set to change.

The Federal Communications Commission (FCC) in its latest order has mandated the implementation of a reasonable DNO list for all the carriers and gateway providers handling traffic coming into the USA.

The move comes in line with the FCC’s objective of Targeting and Eliminating Illegal Robocalls and Scam calls.

When paired up with the earlier initiative of STIR/SHAKEN, implementation of a reasonable DNO list promises to severely mitigate the risk of illegal robocalls.

If you’re a carrier or gateway provider wondering what all of this is or how it works, you’re in the right place.

We will be covering all vital pieces of information so you know what steps need to be taken.

What Is A Do-Not-Call List?

A Do-Not-Call (DNC) list is a registry of phone numbers of users who have opted out of receiving any form of telemarketing calls. As per common regulations adopted globally, all registered telemarketing firms are required to comply with the DNC list.

DNC lists are required to be followed and enforcement of these is handled by a designated government agency. For the USA, it's the Federal Trade Commission (FTC), for India it is the Telecom Regulatory Authority (TRAI), for the UK it's the Office of the Information Commissioner and so on.

These authorities have the power to impose fines on violators or terminate their licenses or both. These DNC lists are maintained and updated regularly and provided to telemarketing firms for them to comply with it.

What Is A Do-Not-Originate List?

A Do-Not-Originate list contains phone numbers that are either invalid, unallocated, allocated but unused and numbers used for inbound only traffic. A carrier or a gateway provider are required to block any calls originating from any numbers in the DNO list.

Scammers usually resort to Caller ID and Identity spoofing to place robocalls impersonating legitimate businesses and authorities.

For example, a scammer may resort to using an inbound calls only number of a bank to place robocalls and scam customers. By implementing a DNO list, all such calls originating from an inbound calls only number are blocked by carriers and gateway providers.

Another example would be a scammer using a phone number issued to a business which remains unused by them. Even in this scenario, the DNO list implementation will result in any such calls being blocked.

Now that we know what a DNO list is, we can head on to learning what all types of numbers are included in it.

Types Of Numbers To Be Included In A DNO List

The FCC has set a clear outline for the type of numbers to be included in any reasonable DNO. Accordingly, the following four types of numbers are to be included:

  1. Inbound Calls Only Numbers - Phone numbers that a subscriber, business or authority has assigned to be used only for inbound calls.

Example - A customer support number for a Bank, helpline numbers for various essential and emergency services, etc.

  1. Invalid Numbers - North American Numbering Plan (NANP) numbers that are invalid.
  2. Unallocated Numbers - Valid North American Numbering Plan numbers that are valid but haven’t been allocated to any provider by the (NANP) Administrator.
  3. Unused Numbers - Valid and allocated numbers that are unused and so confirmed by the subscriber or provider.

The FCC has not issued an official DNO list from their end. They expect the gateway providers to compile a reasonable DNO list by themselves, based on the above recommendations.

Why Is FCC Mandating Implementation Of DNO lists?

The FCC wants to step up its efforts to combat the threat of illegal robocalls and scams resulting out of those. The first step in this process was the introduction and implementation of STIR/SHAKEN.

STIR/SHAKEN is quite effective in its own right. However, it still leaves a few opportunities that scammers can exploit. The planned implementation of the DNO lists by the gateway providers is set to eliminate such opportunities.

When a gateway provider or a carrier implement a DNO list, any calls originating using numbers in the DNO list are blocked right away. Thus, all traffic originating outside the USA automatically filters out any potential scam calls.

Important Things To Know For Carriers and Gateway Providers

The Deadline for Implementation

On November 18, 2022, the FCC announced the deadline for implementing a reasonable DNO list through the Federal Register Vol. 87, No. 222. As per the announcement the deadline was set at December 19, 2022.

We are well past the deadline as I write this article. In case you have not yet implemented a reasonable DNO list, do it at the earliest.

Consequences For Not Complying

  1. Entities / Gateway Providers will be imposed with fines for failures to block calls on a per-call basis.

A fine amounting to a maximum of $22,021 will be imposed upon Uncommon Carriers for each violation.

A fine amounting to a maximum of $220,213 will be imposed upon Common Carriers for each violation.

Additional Actions

  1. Entities / Gateway Providers will be imposed with maximum permissible fine for failures to appropriately certify in the Robocall Mitigation Database.
  2. The Commission will be notified when a known bad actor files for a new certification and thus, resultantly will be delisted from the Robocall Mitigation Database.
  3. Repeat Offenders will have their section 214 operating authority revoked. The owners, directors, officers or principals of these repeat offenders will be banned from any future association with any entities regulated by the Commission.

Putting Together a DNO List

As stated earlier, the FCC won’t be issuing any official DNO list. Instead all gateway providers are required to prepare one based on the guidelines provided.

How should you go about creating a DNO list? Here is how.

Step 1 - Gather all Inbound Only Numbers

You can either opt for telephone directories or online databases to procure all the important numbers used for inbound calling only.

Step 2 - Gather Invalid, Unallocated and Unused Numbers

You can either opt for any available online database or rely on a third party provider for this list.

Step 3 - Compile a DNO List

Once you have sufficient numbers, you can proceed and compile a DNO list. As long as it’s put together using FCC guidelines, you’re good to go.

Step 4 - Regularly Update DNO List

This DNO list needs to be updated regularly to ensure new additions are made as required. Newly allocated and numbers which were previously unused should also be removed from the list to keep it accurate.

DNO List for ConnexCS Customers

ConnexCS has been working on finalizing a DNO list since the announcement. Our list is ready to be offered to our customers in its base form. It was compiled strictly based on FCC recommendations.

We’re making some final additions to the list from our end to ensure our DNO list performs better than industry standards. All customers shall be informed as soon as the list has been finalized.

Instructions pertaining to implementing it through our platform will be conveyed to customers in due time.