DNC Lookup API Documentation

DNC Lookup API uses GET/POST methods and supports only HTTPS with TLS v1.2+. Determines if the phone number is present on national, state, or Direct Marketing Association do not call lists. It also identifies if the phone number is a cellular phone and if the phone number is associated with a known TCPA litigator or serial plaintiff.

Before using, please make sure you have a SAN number from https://telemarketing.donotcall.gov/profile/create.aspx

Required Input Parameters:
Parameter
Description
Output
(OPTIONAL) set to “json” or “xml”. Omitting this defaults to XML
Phone
10 numeric digits ONLY
Token
unique PW given by RealValidation
Response Fields:
Response Field
Description
Phone
10 numeric digits ONLY
RESPONSECODE
“OK” or corresponding error code - see appendix A
RESPONSEMSG
Blank or corresponding error message - see appendix A
national_dnc
“Y”, “N”, “?” indicating a “yes”, “no”, or “timeout” presence on the national DNC list
state_dnc
“Y”, “N”, “?” indicating a “yes”, “no”, or “timeout” presence on the state DNC list
dma
“Y”, “N”, “?” indicating a “yes”, “no”, or “timeout” presence on the DMA list
litigator
“Y”, “N”, “?” indicating a “yes”, “no”, or “timeout” if a known DNC litigator
Iscell
“Y” means Cell phone, “N” means Landline (“V” is for VoIP if enabled on account)
ID
Internal identifier
Example: Connected Phone Line
https://api.realvalidation.com/rpvWebService/DNCLookup.php?phone=7275555555&token=1234ABCD-1234-ABCD-1234-123456ABCDEF
Result in XML
<?xml version= "1.0 " encoding= "UTF-8 "?>
<response>
 <RESPONSECODE>OK</RESPONSECODE>
 <RESPONSEMSG></RESPONSEMSG>
 <national_dnc>Y</national_dnc>
 <state_dnc>N</state_dnc>
 <dma>N</dma>
 <litigator>N</litigator>
 <iscell>N</iscell>
 <id>4</id>
<response>
Result in JSON
{
"RESPONSECODE":"OK",
"RESPONSEMSG":{},
"national_dnc":"Y",
"state_dnc":"N",
"dma":"N",
"litigator":"N",
"iscell":"N",
"id":"4"
}
Appendix A:
Status
Error Text
Description
-1
Missing number
Missing or badly formatted number
102
The user is invalid
Usually for insufficient balances may contain balance information
unauthorized
< blank >
incorrect token or suspended account
invalid-phone
Phone number does not exist

Not super techie... integrate DNC Lookup into your favorite CRM, forms, and apps using Zapier or Integrately.

DNC Lookup API Doc
DNC Lookup API 060222