Domain Email and VAT Validation API

API ID 14389

Validate DNS records, check whether an email domain can receive mail, and verify EU VAT numbers in one JSON API.

API Documentation

Endpoints

Request
Returns the DNS records for a domain, including address records and mail exchange records where present.
Endpoint ID: 36161
GET https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36161/dns+record+lookup
INPUT PARAMETERS

DNS Record Lookup — Endpoint Features

Object Description
domain Required Domain name to resolve, without a protocol or trailing path.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domain
API EXAMPLE RESPONSE
JSON
{
    "domain": "example.com",
    "A": [
        "172.66.147.243",
        "104.20.23.154"
    ],
    "AAAA": [
        "2606:4700:10::ac42:93f3",
        "2606:4700:10::6814:179a"
    ],
    "MX": [
        "0 ."
    ],
    "NS": [
        "hera.ns.cloudflare.com.",
        "elliott.ns.cloudflare.com."
    ],
    "TXT": [
        "\"v=spf1 -all\"",
        "\"_k2n1y4vw3qtb4skdx9e7dxt97qrmmq9\""
    ],
    "CNAME": [],
    "ssl": {
        "status": 200,
        "cloudflare": true,
        "server": "cloudflare"
    }
}
DNS Record Lookup — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36161/dns+record+lookup?domain=example.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Checks the syntax, domain and mail exchange records of an email address and reports whether it can receive mail.
Endpoint ID: 36162
GET https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36162/email+address+verification
INPUT PARAMETERS

Email Address Verification — Endpoint Features

Object Description
email Required Email address to verify, including the at sign and domain.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

email
API EXAMPLE RESPONSE
JSON
{
    "email": "[email protected]",
    "valid": true,
    "domain": "example.com",
    "format_valid": true,
    "mx_valid": true,
    "is_disposable": false,
    "score": 100,
    "reason": "Email appears valid"
}
Email Address Verification — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36162/[email protected]' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Validates a European VAT number and returns the registered trader name when the registry publishes it.
Endpoint ID: 36163
GET https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36163/eu+vat+number+validation
INPUT PARAMETERS

EU VAT Number Validation — Endpoint Features

Object Description
vat Required VAT number including the two-letter country prefix.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

vat
API EXAMPLE RESPONSE
JSON
{
    "vat": "IE6388047V",
    "country": "IE",
    "country_name": "Ireland",
    "valid": true,
    "vat_rate_standard_percent": 23,
    "registered_name": "GOOGLE IRELAND LIMITED",
    "registered_address": "3RD FLOOR, GORDON HOUSE, BARROW STREET, DUBLIN 4",
    "checked_at": "2026-10-29T17:03:35.492Z",
    "source": "VIES - European Commission",
    "note": "VAT number is live and registered; name and address are the registered trader details from VIES."
}
EU VAT Number Validation — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14389/domain+email+and+vat+validation+api/36163/eu+vat+number+validation?vat=IE6388047V' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Domain Email and VAT Validation API simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

No long-term commitment. Upgrade, downgrade, or cancel anytime.

Starts at
$10,000/Year


  • Custom Volume
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  • Real-Time API Monitoring

Overview

Validate DNS records, check whether an email domain can receive mail, and verify EU VAT numbers in one JSON API.

Domain Email and VAT Validation API FAQs

It confirms syntax and that the domain publishes mail exchange records. It cannot confirm that a specific mailbox exists on the receiving server.

VAT numbers are checked against the official European validation service at request time, and the trader name is returned when the registry provides it.

Address records and mail exchange records are returned for the domain you supply, which covers the most common signup and deliverability checks.

The DNS Record Lookup returns DNS records including A, AAAA, MX, NS, TXT, and CNAME records. The Email Address Verification returns details about the email's validity, including format, domain, and MX record status. The EU VAT Number Validation returns the VAT number's validity, associated country, registered trader name, and address.

Key fields include "domain," "A," "MX," "valid," "email," "vat," "registered_name," and "registered_address." Each field provides specific information relevant to the respective validation process.

Each endpoint returns a JSON object structured with relevant fields. For example, the DNS Lookup groups records by type (A, MX, etc.), while the Email Verification includes fields for validity and reasons. This organization allows easy access to specific data points.

The DNS Record Lookup provides DNS records, the Email Address Verification offers email validity and domain checks, and the EU VAT Number Validation supplies VAT status and trader details. Each endpoint serves distinct validation needs.

Users can customize requests by specifying the domain for DNS lookups, the email address for verification, or the VAT number for validation. Each endpoint accepts a single parameter relevant to its function, allowing targeted queries.

DNS records are retrieved from authoritative DNS servers, while email verification checks against mail exchange records. VAT validation is sourced from the official European Commission's VIES database, ensuring reliable and accurate information.

Common use cases include verifying email addresses for marketing campaigns, ensuring valid VAT numbers for invoicing, and checking DNS records for domain setup and troubleshooting. These validations help maintain data integrity and compliance.

Users can leverage the returned data to enhance email deliverability, validate business transactions, and ensure proper domain configurations. For instance, a valid email score can guide marketing strategies, while accurate VAT details support compliance in invoicing.

General FAQs

To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.

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The free trial lasts for 7 days and allows you to make up to 50 API requests.

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Prices are determined by a recurring monthly or yearly subscription, depending on the chosen plan.
API calls are deducted from your plan based on successful requests. Each plan comes with a specific number of calls that you can make per month. Only successful calls, indicated by a Status 200 response, will be counted against your total. This ensures that failed or incomplete requests do not impact your monthly quota.
Zyla API Hub works on a recurring monthly subscription system. Your billing cycle will start the day you purchase one of the paid plans, and it will renew the same day of the next month. So be aware to cancel your subscription beforehand if you want to avoid future charges.
To upgrade your current subscription plan, simply go to the pricing page of the API and select the plan you want to upgrade to. The upgrade will be instant, allowing you to immediately enjoy the features of the new plan. Please note that any remaining calls from your previous plan will not be carried over to the new plan, so be aware of this when upgrading. You will be charged the full amount of the new plan.
To check how many API calls you have left for the current month, refer to the 'X-Zyla-API-Calls-Monthly-Remaining' field in the response header. For example, if your plan allows 1,000 requests per month and you've used 100, this field in the response header will indicate 900 remaining calls.

You can monitor your API usage through the response headers included with every request:

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