Blog & How To Guides | WhoisXML API
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WHOIS / WHOIS History
WHOIS / WHOIS History

Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.

DNS / DNS History
DNS / DNS History

Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.

IP Geolocation / IP Netblocks
IP Geolocation / IP Netblocks

Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Access our web-based solution to dig into and monitor all domain events of interest.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.

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Monitoring
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Predictive Threat Intelligence Feeds
Predictive Threat Intelligence Feeds

Predictive threat intelligence is your best first line of defense. Subscribe to the feeds to strengthen your cybersecurity posture. Contact us today for more information.

WhoisXML API Internet Infrastructure
Internet Infrastructure

Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.

Enterprise API Packages
Enterprise API Packages

Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.

Security Intelligence (SI) Suite
Security Intelligence (SI) Suite

Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.

Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.

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WhoisXML API Blog

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December 2022: New Domain Activity Highlights

Using our extensive collection of domain intelligence, WhoisXML API researchers analyzed several millions of newly registered domains (NRDs) added on 1–31 December 2022. We studied their top-level domain (TLD), registrar, and registrant country distribution. We also looked at their text string usage as part of the effort to detect emerging trends. Check out our findings below, along with links to threat reports our researchers put together using our domain, DNS, and IP intelligence sources.

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November 2022: New Domain Activity Highlights

WhoisXML API analyzed more than 5.6 million newly registered domains (NRDs) added on 1–30 November 2022 to detect trends, such as top-level domain (TLD) and text string usage. We also looked at the WHOIS data redaction status and registrar and registrant country distribution of the NRDs. Check our findings below, along with threat reports our researchers put together using domain, DNS, and IP intelligence.

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October 2022: DNS Highlights

WhoisXML API analyzed more than 8.4 million newly registered domains (NRDs) added during 1–31 October 2022 to detect trends, such as top-level domain (TLD) and text string usage. Check out our findings below, along with threat reports our researchers put together, to provide the Internet community with domain, DNS, and IP intelligence.

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September 2022: DNS Highlights

WhoisXML API analyzed more than 9.3 million newly registered domains (NRDs) added between 1 and 30 September 2022 to determine the top-level domain (TLD) and text string usage. We also investigated how news items were represented in the Domain Name System (DNS)—Her Majesty Queen Elizabeth II passing away and the iPhone 14 release. Check out the overview of our findings below.

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Getting JSON Lines from an API Call into a CSV File via UNIX Command Line

WhoisXML API offers, via API calls, a lot of information on domains or IP addresses that is very useful for a number of applications, including cybersecurity investigations, domain appraisal or system administration. Imagine that one is given a long list of domain names, and one is interested in each domain's details, e.g., WHOIS or website categories, etc. In each API call, a single domain name is sent, and its data is returned in JSON format. (Some of the APIs of WhoisXML API offer bulk lookups, too, but we will not deal with this possibility here.) To get an overview of the data, analysts often prefer to have everything in a single csv file; one line for each domain. This can be opened by popular office spreadsheets like Excel or LibreOffice Calc, or sent to other kinds of processing. 

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August 2022: Student Loan Cancellations, American Football Season, Natural Disasters Around the World, and Six Months into the Ukraine-Russia War

Our team monitored the DNS for registration activities related to some of the most trending and pressing issues in August, ranging from sports to global disasters. An overview for each trend is below.

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June-July 2022: Pride Month, Economic Recession, Abortion Laws, and the Stock Market

We monitored the DNS for activities related to some of the top events and pressing issues in June and July 2022. Check out the overview below, and feel free to download the dedicated threat reports where available.

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Orchestrating Open Source Software and WHOIS Newly Registered Domain data feeds to fight the typosquatting plague

Typosquatting and related types of cyber threats, such as domain squatting, phishing campaigns, IDN homoglyph attacks, etc., cause significant harm and incur financial loss, so it is vital to be vigilant and fight against these malicious threats. 

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