Caller ID Authentication, STIR/SHAKEN & Branded Calling
Make every outbound call trusted before it is answered - A-level STIR/SHAKEN attestation, accurate CNAM, number-reputation monitoring and remediation, and branded caller display on the handset.
A
Attestation on Dollu numbers
24×7
Number reputation monitoring
60+
Countries with CLI verification
What is Caller ID Authentication, STIR/SHAKEN & Branded Calling?
Answer rates for legitimate business calls have fallen as carriers, handset makers and analytics apps label unknown numbers as spam or block them outright. Dollu’s caller-ID authentication service addresses the problem at every layer: cryptographic attestation of the calling number under the US STIR/SHAKEN framework, accurate CNAM so the right name displays, continuous monitoring of how the major analytics engines classify your numbers, and remediation and registration workflows to fix labels when they go wrong. The result is calls that reach the handset with the trust signals carriers and consumers now expect.
For US-bound traffic Dollu is a STIR/SHAKEN participant with our own certificate from an approved STI certificate authority. Calls originating on numbers we assign to you receive A-level (full) attestation; calls on numbers you bring from elsewhere can be raised to A-level through our know-your-customer verification and letter-of-authorisation process, rather than the B or C attestation that invites filtering. Identity headers are signed at our origination edge, verified on inbound traffic and passed intact to downstream carriers, and we maintain our own Robocall Mitigation Database filing and respond to industry traceback requests on your behalf.
Authentication alone does not stop a number being labelled. Our reputation service registers your numbers and business identity with the leading analytics providers used by US carriers and handset apps, monitors labels across those engines and the main mobile networks, and alerts you when a number is tagged. Remediation includes dispute filing, evidence packs showing consent and calling patterns, and calling-behaviour recommendations such as number-rotation limits, pacing and daytime dialling windows. Branded calling adds your verified business name, logo and call reason on supported handsets, so recipients see who is calling and why before they decide to answer.
Outside the United States caller-ID rules differ by country and are tightening. UK operators must block calls from abroad presenting UK numbers without a legitimate basis, India requires registered, KYC-backed identities for commercial calling, and several EU regulators mandate that presented numbers be genuine, dialable and owned by the caller. Dollu’s international CLI presentation service pairs KYC-verified customer identity with numbers we control in 110+ countries, validates CLI delivery on in-country test numbers in 60+ countries and applies the correct national rules on every route, so international outbound campaigns present a compliant, answerable number.
Why choose Dollu for stir/shaken & cnam.
The advantages of buying from a carrier that owns its network, interconnects and operations - rather than a reseller.
Higher answer rates
Attested, correctly named and reputation-managed numbers are answered more often. Customers typically see double-digit percentage improvements in connect rates on outbound programmes.
Fewer blocked and mislabelled numbers
Proactive registration and continuous monitoring catch labels within hours, not weeks, and remediation is filed with the analytics engines by a team that does it every day.
Regulatory cover in the US and beyond
STIR/SHAKEN, Robocall Mitigation Database and traceback obligations are handled on our side, and international CLI rules are applied per country before a call is routed.
Recognition at the moment of the call
Branded display puts your name, logo and reason for calling on the screen, so a payment reminder or a delivery update is recognised for what it is.
One provider for numbers, voice and identity
Numbers, termination, attestation, CNAM and branding are configured on the same platform, so there is no gap between who owns the number and who signs the call.
Capabilities in detail.
Everything included with Caller ID Authentication, STIR/SHAKEN & Branded Calling - the platform features, options and controls you get from day one.
- 01
STIR/SHAKEN signing and verification
Identity headers signed with our STI certificate at the origination edge; verification of inbound calls with verstat results passed to your platform; support for SIP over TLS end to end.
- 02
Attestation uplift for numbers you bring
KYC of the calling entity, letter of authorisation from the number holder and validation against carrier records allow A-level attestation on numbers held with other providers.
- 03
CNAM management
Provision and correct the 15-character caller name shown by US carriers, monitor propagation across the CNAM databases and fix mismatches that make legitimate calls look suspicious.
- 04
Reputation monitoring and alerts
Daily checks of your numbers against the leading call-analytics engines and major mobile networks, with portal dashboards, per-number history and alerts via email or webhook when a label appears.
- 05
Registration and remediation
Business identity and number registration with analytics providers, dispute filing with evidence packs, and guidance on dialling behaviour, number rotation and campaign pacing.
- 06
Branded calling
Verified business name, logo and call reason displayed on supported handsets and networks in the US, with campaign-level control over which numbers show which brand and reason.
- 07
International CLI presentation
KYC-linked CLI policies per destination country, use of Dollu-controlled local numbers where foreign CLI is restricted, and in-country CLI verification numbers in 60+ countries.
- 08
Analytics and reporting
Attestation level per call in CDRs, label status per number, answer-rate trends by number and campaign, and exportable evidence for compliance audits.
How it works.
From first conversation to live traffic - a tracked, engineer-led onboarding with a named owner at every step.
- Step 01
Verify
We complete KYC on your business, collect letters of authorisation for numbers held elsewhere and load your number inventory with the campaigns and call reasons each number is used for.
- Step 02
Configure
Attestation, CNAM values, branded-calling profiles and international CLI policies are set per number or campaign, and your trunks are moved to the signing edge.
- Step 03
Monitor
Reputation checks and answer-rate tracking begin immediately. Alerts fire when a label appears or connect rates drop, with the affected numbers and likely cause identified.
- Step 04
Remediate and optimise
Our team files disputes and registrations, recommends pacing or number changes and reviews results with you monthly so the estate stays clean as campaigns evolve.
Premium, Standard or Wholesale.
Every destination on the Dollu rate deck is offered in up to three quality tiers. Pick per destination - or per customer - and mix them on one interconnect.
| Dimension | Premium (CLI-guaranteed) | Standard | Wholesale |
|---|---|---|---|
| CLI delivery | Guaranteed - the originating number is delivered intact to the called party | Best effort - CLI is normally delivered but not contractually guaranteed | Not guaranteed - CLI may be withheld or replaced on some routes |
| Route type | Direct operator interconnects and Tier-1 partners only | Direct and vetted partner routes, quality-steered in real time | Least-cost blended routes, swapped freely to hold the price |
| Typical ASR band | Highest | High | Variable |
| PDD | Lowest | Low | Variable - can rise on multi-hop transit |
| Best for | Contact centres, retail and enterprise traffic, OTP voice calls - anywhere the called party must see who is calling | Business traffic where quality matters and CLI is helpful but not mandatory | High-volume carrier, dialler and call-centre traffic where price per minute dominates |
| SLA | Per-destination ASR, ACD and PDD targets with service credits | Quality targets monitored and reported; credits on core availability | Core availability only; route quality is managed, not guaranteed |
| Price position | Highest | Mid | Lowest |
All three tiers ride the same SIP interconnect, portal and CDRs - the tier is chosen per destination prefix, so you can move traffic between them without a new set-up.
Who uses this and why.
Typical deployments across carriers, enterprises, platforms and contact centres.
Contact centres and outbound dialling
Keep large number pools attested, correctly named and free of spam labels so agents spend their time talking to customers rather than dialling into voicemail.
Healthcare appointment and results calls
Ensure reminder and follow-up calls from clinics and hospitals display the provider’s name and reason and are not filtered before the patient sees them.
Financial services and collections
Present a verified, branded identity on account, fraud-alert and collections calls where trust and regulatory compliance both matter.
Logistics and field-service notifications
Driver, technician and delivery-window calls that must be answered on the first attempt to keep schedules on track.
International outbound teams
Sales and support operations calling into the UK, EU, India and other markets with rules on foreign CLI, presented on compliant local numbers.
Technical & commercial specifications.
Key parameters at a glance. Ask us for the full service description and SLA document.
| Attestation | A-level on Dollu numbers; A-level on BYO numbers after KYC and LOA |
|---|---|
| Certificate | Dollu STI certificate from an approved STI-CA; RMD filing maintained |
| CNAM | Provisioning, correction and propagation monitoring across US CNAM databases |
| Reputation | Daily label checks across major analytics engines and mobile networks |
| Branded calling | Name, logo and call reason on supported US handsets and networks |
| International CLI | KYC-linked policies per country; local numbers in 110+ countries |
| Verification | In-country CLI test numbers in 60+ countries |
| Integration | Works with Dollu SIP trunking, origination and termination; verstat in SIP |
| Reporting | Attestation in CDRs; label history per number; answer-rate dashboards |
How Voice & Wholesale is priced.
Wholesale voice is priced from an A–Z rate deck: a rate per destination and breakout for each quality tier, billed on connected seconds. There are no setup or port fees on SIP interconnects.
We publish the model, not a public rate card - actual rates depend on destination, route class, volume and regulatory cost. See how every Dollu service is priced.
- A–Z rate deck in USD, EUR, GBP or INR
- Premium (CLI), Standard and Wholesale tiers per destination
- 1/1 billing on most destinations; 60/60 flagged on the deck
- Volume tiers from 1M minutes a month; bilateral and swap for carriers
- Rate increases with at least 7 days’ notice; decreases immediate
- Billing
- Prepaid (online top-up, auto-recharge) or postpaid net-15/30 after credit review; per-second increments
- Commitment
- None - month-to-month usage; optional volume commitments unlock better tiers
230+ destinations, A–Z.
Every country on the rate deck, in Premium, Standard and Wholesale tiers where the market supports them - over 600 direct carrier interconnects and Tier-1 partners. Country guides cover the destinations with the most traffic.
STIR/SHAKEN & CNAM - your questions answered.
The questions customers and carriers ask us most often before they interconnect. If yours is not here, our team answers within one business day.
Still have a question?
Ask our solutions teamRelated services.
Services customers commonly combine with Caller ID Authentication, STIR/SHAKEN & Branded Calling.
Get your calls trusted again.
Send us a sample of your outbound numbers and we will return a free reputation and attestation report with recommended fixes within two business days.
