# /reachestimate

## POST

**Example POST object:**

```javascript
{
    "targeting": {
        "adUnitTarget": {
            "adUnits": [],
            "negated": false
        },
        "siteTarget": {
            "sites": ["<site-ID>"],
            "negated": false
        },
        "siteGroupTarget": {
            "siteGroups": []
        },
        "userSegmentTargets": [],
        "namedLocationTarget": {
            "locations": [],
            "negated": false
        },
        "deviceTargets": [],
        "dateTarget": {
            "dateRanges": [],
            "timeZoneSetting": "USER"
        },
        "adUnitMatchingLabelTargets": [],
        "categoryTargets": [],
        "keywordTargets": [],
        "keyValueTargets": [],
        "retargetingTargets": [],
        "dayPartingTargets": [],
        "domainNameTarget": {
            "names": [],
            "negated": false
        },
        "ipAddressTarget": {
            "addresses": []
        }
    },
    "dimensions": [
        [
            980,
            240
        ],
        [
            980,
            120
        ]
    ],
    "startDate": "2021-03-15T23:00:00.000Z",
    "endDate": "2021-03-23T22:59:59.999Z",
    "cpm": {
        "currency": "NOK",
        "amount": 100
    },
    "tier": "<tier-ID>"
}
```

| Name       | Required | Restriction                                                              | Description                                                                                   |
| ---------- | -------- | ------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------- |
| targeting  |          | [targeting object](/adnuntius-advertising/admin-api/targeting-object.md) | A list of targeting options to run your reach estimation against.                             |
| dimensions | Yes      | Array                                                                    | An array of size arrays of the sizes of the line item you wish to run a reach estimation for. |
| startDate  | Yes      | Date String                                                              | The start date of the reach estimate.                                                         |
| endDate    | Yes      | Date String                                                              | The end date for the reach estimate.                                                          |
| cpm        | Yes      | Array                                                                    | The CPM price to use for the estimation.                                                      |
| tier       | Yes      | String                                                                   | The id of the tier you wish to run the estimate against.                                      |

### Example responses object.

```javascript
{
    "numSamples": 60449,
    "matchedSamples": 0,
    "totalTraffic": 1630297,
    "reach": 0,
    "reachUpperBound": 54,
    "reachLowerBound": 0,
    "competitors": {},
    "uncontestedReach": 0,
    "uncontestedReachUpperBound": 54,
    "uncontestedReachLowerBound": 0,
    "clickReach": 0,
    "clickReachUpperBound": 54,
    "clickReachLowerBound": 0,
    "visibleReach": 0,
    "visibleReachUpperBound": 54,
    "visibleReachLowerBound": 0,
    "viewableReach": 0,
    "viewableReachUpperBound": 54,
    "viewableReachLowerBound": 0,
    "renderedReach": 0,
    "renderedReachUpperBound": 54,
    "renderedReachLowerBound": 0
}
```

| Name                       | Description                                                                                                                  |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------- |
| numSamples                 | Number of samples that were used to derive the reach estimate.                                                               |
| matchedSamples             | Number of samples that matched the provided targeting                                                                        |
| totalTraffic.              | The maximum amount of traffic, regardless of targeting.                                                                      |
| reach                      | The estimated number of impressions that the targeting will match.                                                           |
| reachUpperBound            | An upper limit for the estimated number of impressions the targeting will match.                                             |
| reachLowerBound            | A lower limit for the estimated number of impressions the targeting will match.                                              |
| competitors                | A list of line-items that also compete against impressions that match the provided targeting.                                |
| uncontestedReach           | The estimation of number of impressions that match the provided targeting and that are not allocated to existing line-items. |
| uncontestedReachUpperBound | Upper limit for the uncontested reach estimate.                                                                              |
| uncontestedReachLowerBound | Lower limit for the uncontested reach estimate.                                                                              |

The values provided for `clickReach`, `visibleReach`, `viewableReach` and `renderedReach` provide similar information as the `reach` values, except for those specific event types rather than for *impressions*.


---

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