STIR/SHAKEN statistics from December 2024

The December 2024 STIR/SHAKEN and robocall statistics are now available. The data show the latest trends in robocalls, STIR/SHAKEN participation, and attestation level usage. Let’s have a look.

Signed robocalls by attestation level

Robocalls level

Figure 1. Signed Robocalls by Attestation Last 6 Months

Figure 1 shows signed robocalls by attestation level over the past six months. The overall numbers were level with November, with slight changes across different attestation levels.

STIR/SHAKEN participation and coverage

We measure STIR/SHAKEN participation changes in two ways:

1. The number of Originating Service Providers (OSPs) signing calls received by our customers,
2. Service providers authorized to do SHAKEN by the STI Policy Administrator (STI-PA),

SHAKEN signing level

Figure 2. Monthly Number of OSPs Sending Signed Calls

Figure 2 shows the number of Originating Service Providers (OSPs) observed signing calls was level with the previous month.

The number of SHAKEN-authorized providers level

Figure 3. STIR/SHAKEN Authorized Providers by Month

Figure 3 shows the number of SHAKEN authorized providers. There was a slight increase in December of less than 1%. We’ll call it level.

These two measures show that STIR/SHAKEN participation remained level in December.

STIR/SHAKEN coverage

Signed calls at termination level

Figure 4. The Percentage of Signed Calls at Termination Last 6 Months

Figure 4 shows the percentage of signed calls at termination for the past six months. This statistic was 47.0% in December, up 0.2% from November. There was a surprising drop in signed calls in November.

Calls by attestation level

Figure 5. Percentage of Calls with SHAKEN Attestation Levels Last 6 Months

Figure 5 shows the percentage of calls signed by attestation level. Calls signed with full A-level attestation were 31.6% in December, up slightly from 30.8% in November. Calls signed with B-level attestation were 3.8%, down slightly from 4.1% in November. Calls signed with C-level attestation were 8.9%, down slightly from 9.4% in November.

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.

Robocalls from prolific robocall signers level

Figure 6. Robocall Percentage by Attestation—Prolific Robocall Signers by Robocall %

Figure 6 shows robocalls authenticated by the top 10 robocall signers ranked by robocall percentage over the past six months.

In December, the robocall percentage for calls signed with A-level attestation by the top 10 prolific robocallers was up slightly from November. Prolific robocalls for calls signed with B- and C-level attestations were more volatile. However, these signers authenticate very few calls with either B- or C-level attestation.

Calls from prolific robocall signers

Figure 7. Call Percentage by Attestation—Prolific Robocall Signers

Figure 7 shows the percentages of calls signed by the top 10 robocall signers by authentication level. They continue to sign their calls mostly with A-level attestation.

Recap

• Robocalls were level, with slight variations across attestation levels.
• STIR/SHAKEN participation was level.
• STIR/SHAKEN coverage was level, following a surprising drop in November.
• The percentages of robocalls signed by the top 10 prolific robocall signers were level.

TransNexus solutions

TransNexus is a leader in developing innovative software to manage and protect telecommunications networks. The company has over 25 years of experience in providing telecom software solutions including branded calling, 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.