The Data Enrichment API for Accurate Customer Records

Q: What is a data enrichment API?

A data enrichment API lets you send records you already have, like a name, phone number, or address, and receive back current, complete, and connected information. Whitepages Pro is a data enrichment API for contact, identity, property ownership, and property details data.

Keep your customer and prospect data complete and current.

The Whitepages Pro data enrichment API appends names, phone numbers, addresses, emails, and property ownership to contact records. Powered by Identity Graph, backed by 28 years of identity resolution and tens of millions of monthly searches on Whitepages.com.

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Self-serve plansScale as neededEasy implementationFor SMBs to enterprises

Authoritative Data at Scale

The Whitepages Pro API is powered by the Identity Graph linking names, addresses, phones, emails, and property records into connected identity profiles.

350M

Identity Records

673M

Phone & Address Records

571M

Email Addresses

112M

Property Records

4B

Data Linkages

Key Data Returned by the Whitepages Pro API

Person name and aliases
Current and historical addresses
Phone numbers with line type (mobile, landline, VoIP) and confidence scores
Additional phone numbers linked to the person
Email addresses with confidence scores from 0 to 100
Property ownership

Sample Requests and Responses

▾{
name: "John Smith",
▸aliases: [ 3 items ],
date_of_birth: "1985-04-12",
▾phones: [
▾{
number: "(206) 555-0142",
type: "mobile",
score: 95
},
▸{ … },
▸{ … }
],
▾emails: [
▾{
email: "john.smith@example.com",
score: 92
},
▸{ … }
],
▾current_addresses: [
▾{
address_id: "ASAMPLE0001",
full_address: "123 Main Street, Seattle, WA 98101",
line1: "123 Main Street",
city: "Seattle",
state: "WA",
zip: "98101"
}
],
▾historic_addresses: [
▸{ … },
▸{ … }
],
id: "PSAMPLE0001",
is_dead: false,
▸owned_properties: [ 1 item ],
linkedin_url: "https://www.linkedin.com/in/john-smith-sample-001",
company_name: "Acme Corporation",
job_title: "Senior Software Engineer",
▸relatives: [ 3 items ],
match_score: 95,
▸matched_by: [ 2 items ]
},
▾{
name: "Sarah Johnson",
▸aliases: [ 3 items ],
date_of_birth: "1990-08-22",
▾phones: [
▾{
number: "(312) 555-0119",
type: "mobile",
score: 92
},
▸{ … }
],
▾emails: [
▾{
email: "sarah.johnson@example.com",
score: 88
},
▸{ … }
],
▾current_addresses: [
▾{
address_id: "ASAMPLE0004",
full_address: "456 Elm Street, Chicago, IL 60601",
line1: "456 Elm Street",
city: "Chicago",
state: "IL",
zip: "60601"
}
],
▾historic_addresses: [
▸{ … }
],
id: "PSAMPLE0002",
is_dead: false,
▸owned_properties: [ 1 item ],
linkedin_url: "https://www.linkedin.com/in/sarah-johnson-sample-002",
company_name: "Globex Industries",
job_title: "Product Manager",
▸relatives: [ 3 items ],
match_score: 87,
▸matched_by: [ 2 items ]
},
▸{ … },
▸{ … },
▸{ … },
… 1 more

Why Whitepages Pro for Data Enrichment

Most data enrichment APIs are built on aggregated B2B records, commodity databases, or scraped sources. Whitepages Pro is built on something different: 28 years of identity resolution expertise and informed by tens of millions of monthly searches on Whitepages.com.

Built for the Industries That Rely on Accurate B2C Contact and Property Data

Real Estate · Home Services · Insurance · Staffing & Recruiting · Legal · Healthcare

Real Estate

Real estate professionals, proptech platforms, and investors use Whitepages Pro to build complete records on off-market properties and the people connected to them.

Reach owners and residents: start with an address and append current owner names, resident details, occupancy status, phone numbers, and emails
Complete your property records: fill gaps in MLS data, county records, and internal property lists to create a unified view of the properties in your pipeline

Recruiting & Staffing

Staffing firms and recruiters use Whitepages Pro to enrich candidate records with current contact information, augmenting resumes and LinkedIn to reach job prospects more effectively.

Refresh candidate records: query by name or any known data point to update stale contact details and reconnect with former candidates and placements
Reach passive candidates: find personal emails and cell phone numbers to reach candidates where they'll actually respond

Financial Services

Wealth managers, RIAs, banks, mortgage marketers, and fintech platforms use Whitepages Pro to keep customer contact information current and reach prospects with accurate data.

Keep contact records current: refresh phone numbers, addresses, and emails on existing client and account records, and fill in contact information gaps
Validate identity information: supply a name with another known data point to confirm they belong to the same person

Built for Modern Data Workflows

MCP Server. Connect Whitepages Pro directly to Claude, Cursor, and other MCP-compatible tools. Enrich, look up, and confirm contact and property data inside the workflows you already use. View MCP docs →

LLM-Ready Responses. Clean, structured JSON designed to drop into prompt pipelines and retrieval workflows without reshaping.

Illustration of cloud hosting connected to laptops and devices through data pipelines

What Customers Are Saying

Higher Match Rates

"In recruiting, finding the right person is the only thing that matters. We tried a lot of competitors, and in our testing, other providers matched only 50% of the people we wanted to reach. With Whitepages, we're getting hits in far more cases."

– Javier Llevada, WISBE Healthcare Recruiting

Critical for Customer Outreach

"Our financial services clients move or change numbers leading to inaccurate data. Whitepages API enables us to keep contact data current which is critical to our business."

– Josh Millang, Retired Protected

More Accurate and Easy to Use

"We tested the Pro API head-to-head against competitors for homeowner and resident data. It was no contest. Whitepages is more accurate and far easier to use. No double or triple querying just to get what you want."

– Reinhard Otto, Infinium Realty

Ready to Enrich Your Customer Records?

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Trusted by 250,000 businesses and tens of millions of monthly users

Data Enrichment API FAQs

What is a data enrichment API?

A data enrichment API lets you send records you already have, like a name, phone number, or address, and receive back current, complete, and connected information. Whitepages Pro is a data enrichment API for contact, identity, property ownership, and property details data.

What's the difference between contact enrichment and data enrichment?

Contact enrichment is a subset of data enrichment focused specifically on contact information (names, phone numbers, emails, addresses). Data enrichment is broader and can also include property ownership, and other person-linked data. Whitepages Pro supports both contact enrichment and broader data enrichment through a single API.

Can I use Whitepages Pro as a recruiting enrichment API?

Yes. Recruiters and staffing platforms use Whitepages Pro to enrich candidate records with current phone numbers, addresses, and contact information that resumes and public profiles often miss. The Person endpoint is the most common starting point for recruiting workflows.

What data does Whitepages Pro API return?

Data returned by the Whitepages Pro API includes names, current and historical addresses, phone numbers with line type (mobile, landline, VoIP), email addresses, job title, employer, and property data like ownership, residents, property details, and occupancy status.

What else can I do with the Whitepages Pro API?

The same API powers other capabilities:

People Search API – Matches a name to their addresses, phones, and email addresses
Reverse Phone – Matches a phone number to its owner. It returns name, address, email, and line type.
Property Data – Returns occupancy status, owner and residents contact information, mortgage information, and property details

How is Whitepages Pro priced? Is there a free trial?

You can start a free API trial or purchase a monthly or annual plan with a 15% discount online with no sales call required. Plans are tiered by volume and may be cancelled or upgraded at any time.

How is Whitepages Pro different from B2B data enrichment APIs like ZoomInfo?

B2B enrichment APIs focus on company-related data to enable B2B sales, namely corporate contact information, firmographics, employee counts, and intent signals. Whitepages Pro focuses on B2C contact information and property ownership.

How easy is it to get started?

Most users are up and running in less than an hour. Simply sign up online, receive your API key, start sending queries via the API or MCP server, and receive enriched data. You can also connect to the API via a workflow automation tool like Make or n8n.

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