WhoisXML API Blog

How Name Server Checks Protect Your Network Against DNS Tunneling

Being a sort of open phonebook of the Internet, the Domain Name System (DNS) can be a corporate network’s weakest link. The main problem lies in how it works. As a way to ensure that devices communicate correctly over the Internet, DNS servers map IP addresses to domains in response to user queries.

More specifically, when a user searches for a domain name on their browser, the browser sends a query to the stub resolver, an operating system component, before querying the local name server.

DNS Flood Attack: What It Is and How to Avoid It with DNS Lookup Online Tools

These days, even large-scale operations suffer from Domain Name System (DNS) flood attacks despite using advanced solutions and subscriptions to the best anti-denial-of-service (DoS) protection services. Attackers always seem to come up with a way to launch distributed DoS (DDoS) attacks of unmatched sizes to take their victims’ sites offline. To date, the worst DDoS attack seen was 1.7 TBps strong. Resulting losses are difficult to ignore, as these range between $120,000 and $2 million.

How to Find a Netblock Owner with an IP Netblocks WHOIS Database

IP netblocks can be considered a neighborhood to which consecutive IP addresses belong. As in the real world, there are good and bad neighborhoods. Fortunately, sophisticated threat intelligence tools enable security engineers to distinguish one from the other.

Traditionally, users can check computers communicating over a network by using a simple ping command to find unresponsive or misbehaving nodes. A ping test sends packets to a server and reveals if the same number of packets were returned, as well as how long it took the destination to issue a response.

How to Validate an Email Address for Typos, Syntax, Curse Words, and Other Rules

Email marketing is without a doubt sound investment for companies. For every $1 spent on email marketing, the return on investment (ROI) can be as high as $32.28, according to DMA’s Marketer Email Tracker report.

The same study examined the respondents’ mailable list size, return rates, and delivery rates, and the findings are quite surprising. Some 55% of the respondents said there was a significant rise in their organization’s mailable list size, yet only 36% reported increased delivery rates. Also, 36% of the respondents said they encountered an increase in the number of returned emails.

Using Domain Ownership History to Secure Next-Gen Firewall Estates

Firewalls are an essential pillar of any enterprise network security strategy. They sift traffic coming in and going out of corporate networks, offering round-the-clock perimeter protection.

Even better are today’s next-generation firewalls (NGFWs), which bring interoperability and contextualization into the mix. These hybrid firewalls provide a more effective layer of protection as they combine both traditional firewalls with newer types.

Unfortunately, NGFWs and older versions for that matter are not the “be-all and end-all” of enterprise network security. They serve as a good starting point, but they also need to be appropriately configured to work — along with the right data feeds, which can include WHOIS history data, as this post will suggest.

Using a Domain History Checker: How to Avoid Gaining a Nasty Reputation from an Expired Domain

Have you ever thought of a domain name as one of the greatest business assets you could own? This may be the right time. A domain name serves a variety of purposes:

It’s an organization’s online distinct means of identification. It is what makes it stand out from the crowd, while usually containing the same or very similar terms as a business’s brand name. That is why it needs protection from abuse, such as copyright or trademark infringement.

How IP Lookup Geolocation Can Improve App Development

App developers find it particularly challenging to make sense of user behavior. Often, users install apps out of curiosity and only use most of them once or twice before completely forgetting about them. Alternatively, they will uninstall these apps right after their curiosity is satisfied.

One way for app developers to increase user engagement and retention is by incorporating IP geolocation into their creations. By maximizing geolocation data, app developers can know their users better in a non-obtrusive manner as well as better figure out what stimulates retention.

DNS Records and Their History Matter: Beefing Up Your Cybersecurity Posture Using DNS Tools

The global cybersecurity landscape is becoming crowded both with threat actors and security solutions. When it comes to security threats specifically, attacks are becoming more and more sophisticated, and the amount of damage they cause is also increasing. In 2018, hackers stole almost half a billion personal records.

These security breaches were accomplished by using different tactics such as phishing, denial-of-service (DoS), and ransomware attacks, to name a few. And the threat actors successfully carried out these attacks, not because victims don’t use cybersecurity solutions, but because not all systems monitor every type of vulnerabilities — including the ones that have to do with DNS misconfigurations.