DID number provider for business — buy local & wholesale DID numbers
DID numbers in 50+ countries — number types and the current ETA for each country are on the pricing page; other types on request. We set up the SIP trunk, codecs and routing of your numbers to your PBX, and help on your PBX side — in the same chat. Your PBX, dialer and CRM stay yours. No engineering or integration fees, no per-hour billing; each number has a setup and monthly fee, listed on the pricing page. Built for call centers, BPOs, resellers, and B2B sales teams.
Routes run over Tier-1 carrier partnerships — the same quality backbone the calls depend on, with CLI compliance built in.
What you get with VoipTower DID numbers
DID numbers delivered as managed infrastructure — numbers, routing, and the engineering to make them work, in one contract.
Engineering included with traffic
Numbers, SIP trunk and routing to your PBX from us; help on your PBX and CRM side in one chat. No engineering or integration fees, no per-hour billing; each number has a setup and monthly fee, listed on the pricing page.
Your account + real engineers
Your VoipTower account shows every call with its cost in real time — plus real engineers in your group chat. We monitor route quality and usually catch issues before they reach you. When something needs attention, questions get resolved in the same chat where your engineer, account manager and billing already are — no ticket queue, no department transfers.
Tier-1 route quality, CLI compliance
Routes run over Tier-1 carrier partnerships — the quality backbone your calls depend on. CLI is routed only for numbers purchased through VoipTower or verified ported-in, never arbitrary spoofing.
Onboard once, reorder from your stock
Standard company KYC — company registration, director ID and use case — is done once for your company. Directions with a Local document scope also need proof of a local address. The document list for each direction is on the pricing page. Re-orders run through a 5-minute form; in a country you already use, numbers arrive from about an hour, up to 1 business day.
DID numbers for resellers and wholesale buyers
For resellers and high-volume buyers, VoipTower offers wholesale DID pricing and bulk provisioning across the same 50+ country footprint — the numbers, the routes, and the engineering, under one contract.
Wholesale DID pricing & bulk provisioning
Volume DID provisioning for resellers and high-volume buyers: number stock held for you per market, reusable-token re-orders, and routing configured by our engineers. You scale the order; we handle the provisioning and the technical layer behind it.
Why provisioning order decides whether wholesale DIDs stay live →
Built for resellers
If you place business clients on voice infrastructure, VoipTower works as your backend — DID numbers, SIP trunking, and routing your clients use under your relationship. You resell under your own contract with your clients; every end client passes KYC.
Business phone numbers are simple — until they stop working properly.
Choose a number, connect it to a phone system, start receiving calls. That's the theory. In real B2B operations, DID numbers are only useful when they're part of a working voice setup — routing, SIP, PBX, CRM, and someone who picks up when something breaks.
What goes wrong without a proper setup
Poor call quality. Missed inbound calls. Slow activation. Weak routing control. No support when calls fail. Numbers that don't work well with the PBX. Unclear pricing. No help with international routing.
What VoipTower does instead
We help you choose the right numbers, connect them correctly, test routing, and support you in the same chat after launch. DID numbers are delivered as part of managed VoIP infrastructure, with engineering included.
What are DID numbers?
DID stands for Direct Inward Dialing. A DID number lets callers reach your business directly — local, national, or mobile, depending on the country and use case.
In a VoIP setup, DID numbers are connected to your business phone system through SIP trunking or custom routing. A customer in Germany calls a German DID. The call routes to your support team, sales team, call center, PBX, or CRM workflow. DID numbers give you local presence and inbound call control without a physical office in every country.
Local DID numbers
Geographic numbers tied to a city or region. Customers see a familiar local code. Useful for regional support, sales, and customer service.
National DID numbers
Country-wide numbers. Useful for centralized support lines, sales hotlines, and brand-level customer contact.
Mobile DID numbers
Mobile-format numbers in countries where they're permitted for business use. Useful for mobile-first markets (voice only).
Other number types
Number types and the current ETA for each country are on the pricing page; other types on request.
How VoipTower delivers business DID numbers.
DID numbers come with the VoIP infrastructure needed to make them work — not as standalone SKUs. The goal is reliable inbound calls, not a catalog entry.
DID sourcing
DID numbers in 50+ countries. Number types and the current ETA for each country are on the pricing page; other types on request. Operator-aligned provisioning and country-specific KYC handled at submission.
SIP trunking setup
Configured to deliver inbound calls to your existing PBX, IP PBX, dialer, or call center platform.
Inbound call routing
Each number is routed to your PBX; queues, business hours and IVR live in your PBX, and we help on the PBX side.
PBX connection
3CX, Asterisk, FreePBX, IP PBX, and most SIP-capable systems — connected by VoipTower engineering during onboarding.
CRM connection
We help connect calls to your CRM through your PBX or dialer — free, in the same chat. CRM-side development stays with your team or your CRM vendor.
Testing, launch, support
Numbers tested before launch. Your request is reviewed within about 24 hours of submission; first number per country follows the ETA on the pricing page. Ongoing support included.
DID numbers in real business operations.
Different industries need different DID setups. The number type, routing logic, and integration shape depend on how your team actually works.
DID numbers for call centers
Country and campaign numbers, queue routing, agent groups, callback numbers, and language routing. Quality first — configured to your PBX and supported in the same chat.
VoIP for call centersDID numbers for B2B sales
Local numbers per market for outbound callbacks. UK number for UK leads, German number for German prospects, Canadian number for Canadian campaigns. Connected to your SIP trunk, PBX or dialer; CRM through your PBX or dialer — we help.
VoIP for sales teamsDID numbers for e-commerce
Customer support numbers, order status lines, returns and refund routing, delivery issue support, supplier communication. Local numbers per market make a store easier to reach and trust.
VoIP for e-commerceDID numbers for logistics
Dispatch lines, driver support, delivery coordination, branch numbers, priority routing, customer callbacks, and routing by location or region. When calls are part of daily operations, reliability is critical.
VoIP for logisticsHow a DID number actually delivers a call.
From dial tone to answered call — the path through managed VoIP infrastructure. For a deeper walkthrough, see how DID call routing works.
- The customer dials the DID number. They see a local number (e.g. a German +49 number) and call it from their phone, mobile, or system.
- The call enters the VoIP network. It transits from the local telecom operator into VoipTower's managed routing layer.
- VoipTower routes the call based on your setup. Each number is routed to your PBX; queues, business hours and IVR live in your PBX, and we help on the PBX side.
- The call is delivered to your destination. SIP trunk to your PBX, queue inside your call center platform, CRM-connected workflow, or directly to an agent.
- Your team answers. Connected, identified, and ready — with caller context if your PBX or dialer passes calls to your CRM.
DID numbers, SIP trunking, PBX, and CRM — how they connect.
A DID number alone is not a phone system. It's one piece of a four-part chain. Here's how each piece fits.
DID number ← inbound call
The DID number is the address. It tells the global phone network where the call should be delivered. Local, national, or mobile — each has different reach and use cases.
SIP trunk ← delivery channel
SIP trunking is the bridge between the DID and your phone system. Calls travel from the DID through the SIP trunk to your PBX, IP PBX, call center platform, or dialer.
PBX ← internal routing
The PBX takes the call from the SIP trunk and routes it inside your business — extensions, departments, queues, IVR menus, or specific users. VoipTower connects DID numbers to 3CX, Asterisk, FreePBX, and most SIP-capable systems.
CRM ← caller context
When DID-connected calls land in the CRM, your team sees who's calling, history, deals, tickets, and notes. Useful for sales, support, call centers, and e-commerce. Calls connected through your PBX or dialer — we help.
Why DID numbers from VoipTower.
Six reasons businesses choose us as their DID number provider.
Local presence in key markets
Customers in Germany, the UK, Canada, Poland, France, Czech Republic, South Africa, or Argentina see a familiar local number. Calls feel local; your team handles them centrally.
Better inbound call handling
Each number is routed to your PBX; queues, business hours and IVR live in your PBX, and we help on the PBX side. Customers reach the right team faster.
International growth without physical setup
Expand into new countries without a local office. VoipTower handles numbers, SIP trunking, routing, and compliance from one place.
Connect to existing systems
PBX, dialer, contact center platform — VoipTower connects to what you already use instead of replacing your setup. CRM: calls connected through your PBX or dialer — we help.
Your routing, your PBX
If your team doesn't answer, the call goes to a backup number you choose — set in your PBX, and we help. The setup matches how your team actually works.
Account plus engineering
Your VoipTower account shows every call with its cost in real time, backed by VoIP specialists. Numbers, SIP trunk and routing to your PBX from us; help on your PBX and CRM side in one chat. Ongoing support after launch — included with traffic.
DID numbers by country.
VoipTower provides DID numbers in 50+ countries. Eight of them have a dedicated country page:
🇩🇪 Germany
German geographic DID; other types on request. Operator-aligned KYC.
German business numbers🇬🇧 United Kingdom
UK numbers (type on the pricing page).
UK business numbers🇫🇷 France
French geographic DID; available zones confirmed at order. Mobile DID is available; its price, delivery time and documents are on the pricing page.
French business numbers🇨🇦 Canada
Canadian geographic DID; other types on request.
Canadian business numbers🇵🇱 Poland
Polish geographic DID with operator-aligned setup; other types on request.
Polish business numbers🇨🇿 Czech Republic
Czech geographic DID; other types on request.
Czech business numbers🇿🇦 South Africa
South African geographic DID; other types on request.
South African business numbers🇦🇷 Argentina
Argentine geographic DID; national numbers on request.
Argentine business numbersFrequently asked questions about business DID numbers.
Direct answers to the most common questions about buying DID numbers, wholesale provisioning, VoIP, SIP trunking, and PBX integration.
How do I buy a DID number from VoipTower?
Can I buy DID numbers wholesale or in bulk?
How much do DID numbers cost?
Does VoipTower own its routes or work through carriers?
What are DID numbers for business?
How do DID numbers work with VoIP?
Can DID numbers be used with SIP trunking?
Can DID numbers support international call routing?
Can DID numbers be connected to my PBX?
Can DID numbers be connected to my CRM?
Are DID numbers good for call centers?
What is the difference between DID numbers and VoIP numbers?
How fast can DID numbers be activated?
Can I route DID numbers to different teams?
Can I use DID numbers for local presence?
What businesses use DID numbers?
Buy DID numbers with managed VoIP routing.
Tell us which countries you need, how your calls should be routed, and what systems you already use. We'll review, qualify, and activate; your request is reviewed within about 24 hours of submission, and the first number per country follows the ETA on the pricing page.