# Coverage Resources

Use Coverage Resources to discover DIDWW inventory availability before creating an order.

These resources help you search available coverage by country, region, city, NANPA prefix,
DID Group Type, DID Group, and Available DID. You can also reserve selected DIDs temporarily
before completing an order.

## Resource overview

| Resource | Use it to |
| --- | --- |
| [Countries](countries/index.html) | Find countries where DIDWW inventory is available. |
| [Regions](regions/index.html) | Filter coverage by state, province, or administrative region. |
| [Cities](city/index.html) | Search local coverage by city. |
| [NANPA Prefixes](nanpa/index.html) | Filter coverage by area code and prefix in NANPA countries. |
| [DID Group Types](did-group-type/index.html) | Select a number classification, such as local, national, mobile, or toll-free. |
| [DID Groups](did-group/index.html) | Find inventory groups matching a location, prefix, or number type. |
| [Available DIDs](available-did/index.html) | Retrieve individual DIDs that are currently available for purchase. |
| [DID Reservations](did-reservation/index.html) | Temporarily reserve selected DIDs before completing an order. |

## Common workflows

A typical coverage search starts with a broad location lookup and narrows down to specific
inventory.

```
Country
 ├─ Region
 │  └─ City
 ├─ NANPA Prefix
 └─ DID Group Type
    └─ DID Group
       └─ Available DID
          └─ DID Reservation
```

Note

Not every country uses every coverage level. NANPA prefixes apply to NANPA countries,
while the available regions and cities depend on each country's inventory structure.

### Find available inventory

1. Retrieve [Countries](countries/index.html) where DIDWW inventory is available.
2. Narrow the location with [Regions](regions/index.html), [Cities](city/index.html), or
   [NANPA Prefixes](nanpa/index.html) where applicable.
3. Use [DID Group Types](did-group-type/index.html) to select the required number type.
4. Search [DID Groups](did-group/index.html) that match the required location, prefix,
   and number type.
5. Optionally retrieve [Available DIDs](available-did/index.html) from the selected DID
   Group to choose individual numbers.

Note

Available DID requests are not enabled by default. To request access to this feature,
contact DIDWW Customer Service or Sales.

### Reserve selected DIDs

Use [DID Reservations](did-reservation/index.html) when your checkout or provisioning
flow requires time between selecting numbers and creating an order.

## Related resources

After identifying or reserving DIDs, use Inventory Resources to create orders and manage
purchased numbers.

- [Orders](../inventory-resources/order/index.html) - Create an order for the selected
  inventory.
- [DIDs](../inventory-resources/did/index.html) - Retrieve and configure purchased DIDs.
- [Balance](../inventory-resources/balance/index.html) - Check the account balance before
  placing an order.

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