What is DataLink APIs?
DataLink APIs is a data intelligence gateway that lets you validate and enrich any contact or entity with a single API call. Instead of managing four separate vendor integrations, you get one key, one endpoint pattern, and one credit system across all data types.Email Validation
Syntax check, MX record lookup, and live SMTP reachability. Know if an address can receive mail before you send.
Phone HLR
Carrier identification and Home Location Register lookup. Confirm a number is active and on-network in real time.
IP Intelligence
Geolocation, ISP, ASN, VPN and proxy detection. Know where your users are coming from and whether to trust the connection.
Domain Intelligence
WHOIS data, DNS health, and a composite safety score. Profile any domain before you engage with it.
Bundle endpoints
For higher-signal use cases, bundle endpoints combine multiple data types in a single call — cheaper than calling each individually.| Endpoint | What it covers | Credits |
|---|---|---|
/v1/deliverability | Deep email SMTP + spam trap + disposable detection | 3 |
/v1/contact-intel | Email + Phone + IP in one request | 4 |
/v1/fraud-signals | Email + Phone + IP + Domain — full entity profile | 5 |
How credits work
Every API call costs a fixed number of credits depending on the endpoint. Credits are deducted from your monthly allowance. Your plan determines how many credits you get per month.| Plan | Credits / month | Price |
|---|---|---|
| Free | 200 | $0 |
| Starter | 5,000 | $49 |
| Pro | 25,000 | $199 |
Credits reset at the start of each billing cycle. Unused credits do not roll over.
Base URL
All API requests are made to:Next steps
Quick Start
Make your first API call in under 5 minutes.
Authentication
Learn how to authenticate your requests.