Premium API access

Premium API enables access for 3rd party services to our research and tools. Our research database consists of 250+ million domain names, 5+ million name servers and 50+ million mail servers.

The API price model is based on Pay-as-You-go. Every API call gets debited from your API credit balance. The interface is based on HTTPS GET requests and the data type is JSON. The following API types are available:

API typeDescriptionCreditsExample
ASInfoReturns information about every AS number.5AS24940
DomainIpDnsHistoryReturns IP/DNS history for a specific domain. The following records are supported: A, AAAA, MX, NS and
DomainNeighborsReturns domains hosted on the same IPv4
DomainSearchReturns registered and previously registered domain names based on one or more keywords.4keyword tcpip
IP2ASNReturns the AS number announcing the specific IP address.free8.8.8.8
IPv4InfoReturns information about every IPv4
MXNeighborsReturns domains sharing the same mail server (MX record)
NSNeighborsReturns domains sharing the same name server (NS record)

The examples are links to real JSON output of our API. You can use it to test your script. To view the JSON output formatted you can use an online JSON viewer like this. The API results for the DomainIpDnsHistory, DomainNeighbors, DomainSearch, MXNeighbors and NSNeighbors types are limited to 2,500 records per API call. The DomainSearch, MXNeighbors and NSNeighbors APIs have a page parameter where you can get a maximum of 25,000 results.


Price per credit$0.006$0.004$0.0029$0.002$0.0015
PaymentAfter paying via Credit Card (Canadian, United Kingdom and United States address only) or PayPal (worldwide), the API credits are immediately added to your balance.
Please login or create an account to enable the Order now buttons.
VAT and InvoiceAll prices are excluding VAT. When applicable for European Union countries, VAT is charged and will be displayed on order and billing information. Invoice will be available for download from the member center within 30 days after payment.
Terms and conditionsAll subscriptions are one-time and non-recurring. API credits are valid for 12 months. See our full API Terms and conditions.

Tools for you

Your public IP Address

Information about your public IP Address like reverse dns, hosting info and whois data.

my IP Address for Windows 8.1 & 10

This app shows detailed information about your IP Address, your domain and your provider.

Other services

Browser Addons

Our collection of browser extensions and apps.

Premium API

Premium API enables access for 3rd party services to our content and tools.

Premium Website Access

Premium website access is for the IT professional. You get extra page views, more alerts and extra features.