STIR/SHAKEN statistics from July 2023
The July 2023 STIR/SHAKEN and robocall statistics are now available. The data show the latest trends in robocalls, STIR/SHAKEN participation and attestation level usage.
We’ve been publishing monthly STIR/SHAKEN statistics since April 2021. These numbers are gathered from well over a hundred voice service providers using our STIR/SHAKEN and robocall prevention solutions. The data describe calls they received from 825 other voice service providers that originated calls, including some robocalls, signed with STIR/SHAKEN.
Many robocalls are signed with B or C attestation
Calls signed with B attestation Were 4.8 Times more likely to be robocalls
Figure 1 compares the percentage of robocalls by attestation level, for unsigned calls, and for all calls in July 2023. Notice that calls signed with B- or C-level attestation include a high percentage of robocalls. Calls signed with B-level attestation were 4.4 times more likely to be robocalls than unsigned calls.
Robocalls signed with B or C attestation remain high
Figure 2 shows this trend over the past six months. Notice that robocalls signed with B- or C-level attestation were much higher than the robocall percentage for all calls. The percentage of robocalls among calls signed with C-level attestation had been on a downward trend, from February through April but has rebounded to 20% in July. The percentage of robocalls among calls signed with B-level attestation has been hovering around the 22%–23% range, settling at 21.5% in July.
SHAKEN participation increases
We measure STIR/SHAKEN participation changes in three ways:
- Originating Service Providers (OSPs) signing calls received by our customers,
- Service providers authorized to do SHAKEN by the STI Policy Administrator (STI-PA),
- New certification filings in the Robocall Mitigation Database (RMD).
SHAKEN signing up
Figure 3 shows the number of Originating Service Providers (OSPs) signing calls. This had been increasing by about 10/month in previous months. We observed 87 new SHAKEN signers in July.
The number of SHAKEN-authorized providers increases slightly
Figure 4 shows the number of SHAKEN authorized providers. As with OSP signers, this number has an upward trend that has been increasing in recent months. There were 37 new SHAKEN authorized providers in July, a modest 3% increase from June.
New Robocall Mitigation Database filings down
Figure 5 shows that new certification filings in the Robocall Mitigation Database increased by 31 in July.
These three measures show that the STIR/SHAKEN participation had a modest improvement following a strong increase in June.
Most calls reach their destination unsigned
Most calls arrive unsigned
Figure 6 shows that most calls arrive for termination unsigned in July.
Signed calls at termination increasing slowly
Figure 7 shows the percentage of signed calls at termination for the past six months. This figure had been hovering around 24%. In recent months, we’ve observed this number slowly increasing, reaching 34% in July. This is the highest level of signed calls at termination we’ve observed.
Calls with full attestation increase
Figure 8 shows that the percentage of calls signed with full attestation has been climbing over the past six months, from 17% in February to 24.5% in July.
Patterns among prolific robocall signers
Here are robocall and attestation statistics for the top 10 SHAKEN-authorized providers ranked by the percentages of signed calls identified as robocalls.
Prolific robocall signers increase robocalls among A- and B-level attestation calls
Figure 9 shows that the robocall percentage of calls signed with A- and B-level attestation increased in July to their highest levels in six months. Oddly, robocalls were down sharply among calls signed with C-level attestation.
More A-level attestations from prolific robocall signers
Figure 10 shows the attestation allocations for all calls received from these prolific robocall signers. A-level attestations increased 4%, while B- and C-level attestations were down 2% each.
- Robocalls signed with B- or C-level attestation remain high.
- Robocall percentages among the top 10 prolific robocall signers were up among A- and B-level attestation calls.
- STIR/SHAKEN participation continues to improve gradually.
- The percentage of signed calls received at termination is slowly improving.
TransNexus is a leader in developing innovative software to manage and protect telecommunications networks. The company has over 20 years’ experience in providing telecom software solutions including toll fraud prevention, robocall mitigation and prevention, TDoS prevention, analytics, routing, billing support, STIR/SHAKEN and SHAKEN certificate services.
Contact us today to learn more.
This information will only be used to respond to your inquiry. TransNexus will not share your data with any third parties. We will retain your information for as long as needed to retain a record of your inquiry. For more information about how we use personal data, please see our privacy statement.
Our STIR/SHAKEN products:
- Work with your existing network
- Support SIP and TDM
- Affordable, easy to deploy