Mobile Virtual Numbers
SMS-enabled and voice-enabled mobile numbers for two-way messaging, OTP receipt, verification flows and mobile-first customer contact - provisioned via API in the countries that permit them.
40+
Countries with mobile numbers
2-way
SMS and voice on one number
800+
SMS operator connections
What is Mobile Virtual Numbers?
A mobile virtual number is a number from a country's mobile numbering range that lives in Dollu's network instead of on a SIM. It can receive and, where regulation allows, send SMS, and it can receive and place voice calls - all delivered to your application over API, SMPP or SIP rather than to a handset. Mobile numbers are recognised by consumers as personal, replyable numbers, and by many services as valid destinations for verification codes.
Dollu provisions mobile virtual numbers in more than 40 countries through our own mobile allocations and direct agreements with mobile network operators and MVNOs. Inbound SMS is delivered via webhook or SMPP with full sender, timestamp and concatenation handling; outbound replies ride our 800+ SMS operator connections. Voice on the same number is delivered over SIP with the same routing and failover as any Dollu DID.
Typical uses include two-way conversational messaging where customers can reply, receiving one-time passcodes and verification messages for automated account workflows, giving field staff or gig workers a work mobile identity on their own device, and mobile-first customer contact in markets where consumers ignore landline or short-code senders. Availability, SMS capability and permitted use differ by country and are shown in the portal before you order.
Because mobile numbers are attractive to fraudsters, we apply KYC on every account, usage policies per country and traffic monitoring for bulk account creation, SIM-farm-like patterns and spam. Numbers are provisioned and released through the API with webhooks, so platforms can allocate them per user or per session and recycle them under configurable cooling-off periods. Message and call logs are retained per number for reconciliation and compliance, and the same account, portal and invoice cover your DIDs, toll-free numbers and SMS traffic, so a mobile identity is one more capability rather than another supplier.
Why choose Dollu for mobile numbers.
The advantages of buying from a carrier that owns its network, interconnects and operations - rather than a reseller.
Numbers customers reply to
Consumers treat messages from mobile numbers as personal and replyable, lifting response rates for support, sales and appointment conversations compared with short codes or alphanumeric senders.
Automate verification workflows
Receive OTPs and verification SMS on programmable numbers to test, monitor and automate account and onboarding flows across countries.
Voice and SMS on one identity
Give a user, agent or bot a single mobile number that can talk and text, delivered to your app over SIP and API rather than to a physical SIM.
Programmable and elastic
Allocate numbers per user, per conversation or per session through the API, release them when done and let cooling-off rules keep pools clean.
Compliant by country
We publish what each country permits - inbound only, two-way, voice - and enforce it, so your use of mobile numbers stays within operator and regulator rules.
Capabilities in detail.
Everything included with Mobile Virtual Numbers - the platform features, options and controls you get from day one.
- 01
Inbound SMS delivery
Messages delivered in real time via HTTPS webhook (JSON) or SMPP 3.4 bind, with sender, timestamp, encoding and multipart reassembly; retry and dead-letter handling on webhook failure.
- 02
Two-way messaging
Reply from the same mobile number where the country permits A2P origination from mobile ranges, using Dollu's SMS API or SMPP with delivery receipts.
- 03
Voice on mobile numbers
Inbound calls delivered over SIP with failover; outbound calls presenting the mobile number as CLI through Dollu SIP trunking where permitted.
- 04
Dedicated and pooled models
Hold numbers long-term for brand or agent identity, or draw from a managed pool for session-based use with automatic recycling and configurable cooling-off periods.
- 05
Country capability matrix
Per-country view of inbound SMS, two-way SMS, voice, KYC requirements, permitted use cases and activation time, updated as operator policies change.
- 06
Numbers API and webhooks
Search, buy, configure and release mobile numbers programmatically; webhooks for inbound messages, calls, delivery receipts and number status changes.
- 07
Abuse and fraud monitoring
Detection of bulk account-creation patterns, SIM-farm-like behaviour and spam; per-account velocity limits and country usage policies enforced automatically.
- 08
Analytics and logs
Message and call logs per number with searchable history, delivery statistics and export via API or SFTP for compliance and reconciliation.
How it works.
From first conversation to live traffic - a tracked, engineer-led onboarding with a named owner at every step.
- Step 01
Confirm country capability
Check the capability matrix for the countries you need: inbound SMS, two-way, voice, and any KYC or use-case restrictions.
- Step 02
Complete KYC
Provide business registration and a description of intended use. Our compliance desk approves the account and any country-specific requirements.
- Step 03
Provision and integrate
Buy numbers via API or portal, configure webhook or SMPP endpoints for SMS and a SIP destination for voice, and test end to end.
- Step 04
Operate and scale
Allocate, recycle and monitor numbers programmatically; usage dashboards and alerts keep pools healthy and within policy.
Which number type fits.
Local, national, mobile, toll-free and short code numbers solve different problems - and carry different KYC and activation profiles. Availability by country is on the coverage matrix.
| Dimension | Local / geographic | National | Mobile | Toll-free | Short code |
|---|---|---|---|---|---|
| Typical use | Local presence, contact-centre inbound, outbound caller ID | Country-wide brand number without a city tie | Two-way SMS, WhatsApp and verification, mobile-first markets | Sales and service lines the caller should not pay for | High-volume A2P SMS, OTP and marketing opt-in |
| KYC burden | Low to medium; a local address is required in some countries | Low; company registration is usually enough | Medium to high; enhanced KYC and limited stock | Medium; a local entity in some countries | High; operator and regulator approval per code |
| SMS-capable | In selected countries (for example US, Canada, UK) | Rarely | Yes - two-way | In selected countries (US and Canada toll-free SMS) | Yes - the primary purpose |
| Caller pays? | Yes, at local rate | Yes, at national or geographic rate | Yes, at mobile rate | No - the number holder pays for inbound | Not applicable; inbound SMS charged at the sender’s standard rate |
| Activation time | Same day to a few days after KYC approval | Same day to a few days | Days; stock-dependent | Days; regulator registration in some countries | Weeks; carrier approval per country |
Who uses this and why.
Typical deployments across carriers, enterprises, platforms and contact centres.
Conversational customer messaging
Two-way SMS between customers and support or sales teams from a mobile number that feels personal and can be saved as a contact.
OTP and verification automation
Receive verification codes programmatically for QA of onboarding flows, monitoring of OTP delivery by country and automated account workflows.
Field and gig workforce
Give drivers, couriers and technicians a work mobile identity for calls and texts on their own device, with logs kept by the business.
Marketplaces and classifieds
Assign temporary mobile numbers to listings or transactions so buyers and sellers can text and call without exposing personal numbers.
Appointment and reminder services
Send reminders from a mobile number customers can reply to with confirmations or reschedules, handled by your bot or agents.
Technical & commercial specifications.
Key parameters at a glance. Ask us for the full service description and SLA document.
| Coverage | 40+ countries; capability (inbound, two-way, voice) varies by country |
|---|---|
| SMS delivery | HTTPS webhook (JSON) or SMPP 3.4; multipart and Unicode supported |
| Voice delivery | SIP over UDP/TCP/TLS, SRTP; failover to secondary or PSTN |
| Allocation | Dedicated long-term or pooled session-based with cooling-off |
| Provisioning | REST API with webhooks; portal; bulk CSV |
| Activation | Minutes in unrestricted countries; 1–5 business days where KYC applies |
| Compliance | Account KYC; per-country usage policies; abuse monitoring |
| Billing | Monthly rental + per-message and per-minute usage; USD/EUR/GBP/INR |
| Support | 24×7 NOC; compliance desk; named account manager |
How Numbers & DIDs are priced.
Numbers carry a per-number monthly rental set by country and type - local, national, mobile or toll-free - plus per-minute inbound usage. A few countries add a one-time setup or regulatory fee, passed through at cost.
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.
- Rental per number by country and number type
- Inbound usage per minute; toll-free usage by calling origin
- Bulk and committed-inventory discounts
- Porting priced per number or per project
- Free SIP delivery to your endpoint; no channel fees
- Billing
- Rental invoiced monthly in advance, usage in arrears; prepaid or postpaid
- Commitment
- None on standard inventory; committed inventory earns discounts
Numbers in 110+ countries.
Local numbers in 100+ countries, with national, mobile, toll-free and short-code ranges where the numbering plan allows. The countries below have a full guide - KYC, number types and activation times.
- Australia5/5
- Brazil4/5
- Canada3/5
- France5/5
- Germany5/5
- Hong Kong4/5
- India4/5
- Mexico3/5
- Netherlands5/5
- Philippines3/5
- Saudi Arabia4/5
- Singapore4/5
- South Africa5/5
- United Arab Emirates4/5
- United Kingdom5/5
- United States3/5
The figure on each chip is the number of types available out of those listed for the country; the remainder are on request.
Mobile Numbers - 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 Mobile Virtual Numbers.
Put a mobile number behind your app.
Tell us the countries and whether you need inbound SMS, two-way messaging or voice, and we will confirm capability and pricing within one business day.
