Reassigned Authority Plus API

Reassigned Authority Plus (Enhanced RND) combines CCC’s authoritative carrier data with the FCC Reassigned Number Database to provide the most accurate reassignment determination available.

Endpoint

https://dataapi.dncscrub.com/v1.5/Data/EnhancedRND

Authentication

Include your API key in the loginId HTTP header:

--header 'loginId: YOUR_API_KEY'

Parameters

Parameter	Required	Description
`phoneNumber`	Yes	10-digit phone number (no leading 1 or +)
`date`	Yes	Consent date to check against
`useSandbox`	No	Set to `true` to use sandbox mode for testing (returns random results)
`projId`	No	Project identifier for tracking purposes

Date Formats

The date parameter accepts multiple formats:

Format	Example
`MM/DD/YYYY`	`09/29/2021`
`YYYY-MM-DD`	`2021-09-29`
`MM/DD/YY`	`09/29/21`
`YYYYMMDD`	`20210929`

Single Number Request (GET)

curl --location --request GET \
  'https://dataapi.dncscrub.com/v1.5/Data/EnhancedRND?phoneNumber=7075276405&date=20211109' \
  --header 'loginId: YOUR_API_KEY'

const response = await fetch(
  "https://dataapi.dncscrub.com/v1.5/Data/EnhancedRND?phoneNumber=7075276405&date=20211109",
  {
    headers: { loginId: "YOUR_API_KEY" },
  }
);
const result = await response.json();

using (var client = new HttpClient())
{
    client.DefaultRequestHeaders.Add("loginId", "YOUR_API_KEY");
    var response = await client.GetStringAsync(
        "https://dataapi.dncscrub.com/v1.5/Data/EnhancedRND?phoneNumber=7075276405&date=20211109"
    );
}

Response

{
  "PhoneNumber": "7075276405",
  "IsReassigned": false,
  "HasSafeHarbor": true,
  "CCCIsReassigned": false,
  "IsSandBox": false
}

Multiple Number Request (POST)

For checking multiple numbers, use HTTP POST with a JSON body:

curl --location --request POST \
  'https://dataapi.dncscrub.com/v1.5/Data/EnhancedRND' \
  --header 'loginId: YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data-raw '{
    "Data": [
      { "phoneNumber": "7075276405", "date": "20211109" },
      { "phoneNumber": "5039367187", "date": "20211109" }
    ],
    "UseSandbox": false,
    "ProjId": "Demo"
  }'

Response

[
  {
    "PhoneNumber": "7075276405",
    "IsReassigned": false,
    "HasSafeHarbor": true,
    "CCCIsReassigned": false,
    "IsSandBox": false
  },
  {
    "PhoneNumber": "5039367187",
    "IsReassigned": false,
    "HasSafeHarbor": true,
    "CCCIsReassigned": false,
    "IsSandBox": false
  }
]

Response Fields

Field	Type	Description
`PhoneNumber`	String	The phone number checked
`IsReassigned`	Boolean/null	Combined result: `true` = reassigned, `false` = not reassigned, `null` = unknown
`HasSafeHarbor`	Boolean	`true` if FCC safe harbor exemption may be available
`CCCIsReassigned`	Boolean/null	Result from CCC’s carrier data only (for informational purposes)
`IsSandBox`	Boolean	`true` if response was generated in sandbox mode, `false` for production data

Data Source Comparison

Feature	FCC RND	CCC Carrier Data	Authority Plus (Combined)
Data Start Date	Jan 27, 2021	July 2018	July 2018
Update Frequency	Monthly	Daily	Daily
Coverage	All FCC carriers	Major carriers	Best of both

Rate Limits

Limit	Value
Numbers per request	1,000

Enhanced Features

Reassigned Authority Plus includes:

Daily updates
Enhanced accuracy for edge cases
Extended historical data

Use Cases

Safe harbor required
High-value compliance scenarios
Enhanced audit trail requirements
Consent dates go further back than January 2021

Getting Started

Schedule a meeting to:

Discuss your compliance requirements
Get pricing information

RND Basic API

Basic reassigned number API using FCC Reassigned Number Database.

Test Numbers

Test phone numbers for development

⌘I

Getting Started

Full Scrub

Litigator-Only Scrub

Reassigned Scrub

Call Deliverability (TrustCall)

Data Enhancement

GeoScrub

Other APIs

Code Examples

Reassigned Authority Plus API

Reassigned Authority Plus API

Endpoint

Authentication

Parameters

Date Formats

Single Number Request (GET)

Response

Multiple Number Request (POST)

Response

Response Fields

Data Source Comparison

Rate Limits

Enhanced Features

Use Cases

Getting Started

RND Basic API

Test Numbers

​Reassigned Authority Plus API

​Endpoint

​Authentication

​Parameters

​Date Formats

​Single Number Request (GET)

​Response

​Multiple Number Request (POST)

​Response

​Response Fields

​Data Source Comparison

​Rate Limits

​Enhanced Features

​Use Cases

​Getting Started

​Related APIs

RND Basic API

Test Numbers

Reassigned Authority Plus API

Endpoint

Authentication

Parameters

Date Formats

Single Number Request (GET)

Response

Multiple Number Request (POST)

Response

Response Fields

Data Source Comparison

Rate Limits

Enhanced Features

Use Cases

Getting Started

Related APIs