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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.

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Endpoint

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

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Authentication

Include your API key in the loginId HTTP header: 
--header 'loginId: YOUR_API_KEY'

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Parameters

ParameterRequiredDescription
phoneNumberYes10-digit phone number (no leading 1 or +)
dateYesConsent date to check against
useSandboxNoSet to true to use sandbox mode for testing (returns random results)
projIdNoProject identifier for tracking purposes

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Date Formats

The date parameter accepts multiple formats:
FormatExample
MM/DD/YYYY09/29/2021
YYYY-MM-DD2021-09-29
MM/DD/YY09/29/21
YYYYMMDD20210929

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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'

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Response

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

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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"
  }'

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Response

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

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Response Fields

FieldTypeDescription
PhoneNumberStringThe phone number checked
IsReassignedBoolean/nullCombined result: true = reassigned, false = not reassigned, null = unknown
HasSafeHarborBooleantrue if FCC safe harbor exemption may be available
CCCIsReassignedBoolean/nullResult from CCC’s carrier data only (for informational purposes)
IsSandBoxBooleantrue if response was generated in sandbox mode, false for production data

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Data Source Comparison

FeatureFCC RNDCCC Carrier DataAuthority Plus (Combined)
Data Start DateJan 27, 2021July 2018July 2018
Update FrequencyMonthlyDailyDaily
CoverageAll FCC carriersMajor carriersBest of both

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Rate Limits

LimitValue
Numbers per request1,000

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Enhanced Features

Reassigned Authority Plus includes:
  • Daily updates
  • Enhanced accuracy for edge cases
  • Extended historical data

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Use Cases

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

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Getting Started

Schedule a meeting to:
  1. Discuss your compliance requirements
  2. Get pricing information

RND Basic API

Basic reassigned number API using FCC Reassigned Number Database.

Test Numbers

Test phone numbers for development