Wholesale DID Numbers and Local Number Provisioning
Horizon Communications Group provisions wholesale DID numbers and local numbers for carriers, CLECs, CPaaS and UCaaS platforms, and resellers. Founder-led since 1998, we order DIDs in bulk across rate centers and route inbound calls to your platform, with the numbers and routing managed together.
What are wholesale DID numbers?
A DID, or Direct Inward Dialing number, is a telephone number that routes inbound calls straight to a specific endpoint or platform without a dedicated physical line per number. Local DIDs are tied to rate centers, so they present a local presence in the areas you serve.
DIDs are how inboundoriginationlands on your platform: calls to each number arrive over your trunks. For nationwide reach,toll-free numberscomplement local DIDs. Wholesale DID numbers are provisioned in volume so you can assign inbound numbers quickly.
Why providers route DID numbers through Horizon
Founder-led since 1998
You reach a desk that has provisioned and ported numbers for 28 years, not a self-serve portal alone.
Bulk DID provisioning
Order and activate DIDs in volume, assigned to your trunks with inbound routing, instead of one number at a time.
Broad local coverage
Local DID availability across many rate centers, with the desk checking current availability for the areas you need.
Numbers and routing together
As a wholesale DID provider, we manage the numbers alongside the origination that delivers calls to your platform.
How wholesale DID provisioning works
- 01
Consult
We confirm the rate centers and coverage you need, the volume of DIDs, and how inbound calls should route to your platform.
- 02
Provision and interconnect
We provision the DIDs in bulk, assign them to your trunks, and set up inbound origination so calls to each number land on your platform.
- 03
Monitor and optimize
We manage the numbers over time: adding DIDs, handling ports, and keeping inbound routing aligned as your footprint grows.
Who DID numbers are for
- Carriers
- Supplement local number inventory and inbound routing without managing every rate center directly.
- CLECs
- Assign subscriber numbers from wholesale DID inventory with routing handled together.
- CPaaS and UCaaS providers
- Give customers inbound numbers programmatically, backed by bulk DID provisioning.
- Enterprises
- Provision local numbers across locations and route inbound calls to one platform.
- Resellers
- Resell local DIDs under your own brand with a wholesale desk behind provisioning and porting.
DID numbers FAQ
What is a DID number?
A DID (Direct Inward Dialing) number is a telephone number that routes inbound calls directly to a specific endpoint, trunk, or platform without a dedicated physical line for each number. Wholesale DID numbers are provisioned in volume so providers can assign inbound numbers to customers and route the calls over their own trunks.
What is the difference between a DID number and a phone number?
A DID number is a phone number; the term highlights how it is delivered. Any DID is dialable like a normal number, but it is provisioned for Direct Inward Dialing, meaning inbound calls are routed to your platform over a trunk through origination rather than to a single physical line. That is what makes DIDs practical to provision in bulk.
How does bulk DID provisioning work?
Bulk DID provisioning means ordering and activating many DIDs at once and assigning them to your trunks with inbound routing, instead of requesting numbers one at a time. Horizon provisions DIDs in volume and manages the numbers, so you can turn up inbound service for many customers or locations quickly.
What coverage is available for local DIDs?
Local DID availability spans many rate centers and coverage areas. Availability varies by location and changes over time, so rather than promising a fixed list, the desk checks current availability for the specific rate centers you need and provisions from there.
Need wholesale DID numbers provisioned?
Tell the desk the rate centers and volume you need and how inbound calls should route. We will provision the numbers and set up origination.