But what is a parked domain, exactly? And more importantly, what security risks do parked domain names introduce to your organization’s attack surface?
What is a parked domain?
A parked domain is a domain name that has been registered but isn’t connected to any active website or email service. In other words, the domain isn’t being used for its intended purpose yet. Instead of pointing to a functioning web page, the domain typically displays a placeholder page or parked domain page from the domain registrar or web host.
Some domain owners use a domain parking service to display ads on parked domains, generating passive revenue from visitors who type in the domain name directly.
For security teams, parked domains represent an often overlooked component of the attack surface. Businesses may have dozens or even hundreds of registered domains that sit idle, and without proper oversight, these become potential liabilities rather than assets.
Why do people park domains?
Understanding why businesses and individuals park domains helps explain why there are so many parked domains across the internet today. The reasons range from legitimate business strategy to speculative domain investing, and each scenario carries different risk implications.
Protecting your brand identity
Companies often register domain names that include variations of their primary domain name to prevent competitors or bad actors from purchasing domains that could confuse customers. They might buy a domain that mirrors their main domain with different extensions or common misspellings.
A company owning securityscorecard.com/ might also register example.net, example.org, and exampel.com to protect against typosquatting. Registering new domains across every relevant domain extension protects the brand from impersonation.
Reserving domains for future projects
When planning a new product launch or marketing campaign, organizations may register a new domain early and park it until they’re ready to build out the website. Securing the right domain before announcing a project prevents others from registering it first.
Domain investing and speculation
Some investors specialize in purchasing domains they believe will become valuable in the future. These parked domain names remain in a domain marketplace until someone is willing to purchase a domain at a premium price. When visiting a parked page, you’ll often see a message indicating the domain is for sale. A good domain name in a popular industry can sell for thousands or even millions of dollars.
Generating passive revenue
Through domain parking services, domain owners can display ads on their parked pages. Many domain registrars offer domain parking as a built-in feature, making it easy to monetize an available domain while deciding what to do with it. When visitors click these ads, the domain owner earns money without needing to maintain a separate website. This passive income model is most effective for domains with substantial type-in traffic.
Holding acquired or expired domains
When an organization acquires an expired domain from another company, it might park it temporarily while deciding how to use it or redirect traffic. Purchasing domains that previously belonged to competitors or defunct businesses is a common acquisition strategy.
Whatever the motivation, the result is the same: registered domains that sit without an active service, such as a website or email, often displaying nothing more than a generic parked domain page with ads or a notice that the domain is available for purchase.
Types of parked domains you should know about
Not all parked domains work the same way. Understanding the different types of domains in a parked state helps security teams assess the risk profile of each and prioritize remediation efforts. When a domain is simply parked without active management, it can pose different risks depending on its configuration.
Registrar parked pages
When you register a domain name but don’t configure the name server to point anywhere specific, most domain registrars automatically display a placeholder page. This type of parked domain page typically shows the registrar’s branding and may include advertising. The domain is parked by default until the owner takes action to connect it to a web host or configure custom DNS settings. Once you’ve registered your domain, it will be parked automatically unless you take steps to point it elsewhere.
Monetized parked domains
Domain parking services specialize in helping domain owners generate revenue from their unused domain name inventory. These services work similarly to ad networks, displaying pay-per-click advertisements on the parked page. Some registrars offer domain parking with built-in monetization features. Visitors who land on these pages (often by typing in a relevant domain name directly) may click on ads, generating income for the domain owner.
Sale listing pages
Many parked domains exist solely because someone is hoping to sell them. These pages typically display information about domain availability and pricing, often accompanied by a form to submit offers. The domain marketplace has become increasingly sophisticated, with auction platforms and broker services facilitating transactions for premium website domain names.
Addon and alias domains
Within web hosting environments, an addon domain is a domain that functions as a separate website hosted on the same account as a primary domain. Think of it as an extra domain that shares server resources with your main site.
A domain alias, by contrast, points to the same content as the main domain. Both can appear parked if not properly configured, showing default web host pages instead of intended content. If you’re using the domain as an addon but haven’t uploaded content, visitors will see it’s parked with a default page. These misconfigurations create confusion and potential security gaps.
The security risks hiding in parked domains
From a cybersecurity perspective, parked domains pose several risks that security teams must monitor. Whether you’re managing your digital footprint or assessing third-party vendors, understanding these risks is foundational to good domain management.
Forgotten assets become attack vectors
Organizations that register domain names for future projects sometimes forget about them entirely. These forgotten registered domains can expire without anyone noticing, allowing threat actors to purchase the expired domain and use it for malicious purposes. An attacker could redirect traffic, host phishing pages, or impersonate your brand using a domain that once belonged to you.
We frequently observe this pattern when analyzing breach data. Attackers monitor when valuable domains from legitimate companies are about to expire, then quickly snap them up. The new owner can receive email intended for the previous organization or trick customers into thinking they’re interacting with a trusted brand. This technique has been used in sophisticated supply chain attacks.
Certificate and DNS misconfigurations
Parked domains often have misconfigured or missing SSL certificates, which can create potential security issues. When security tools scan these domains, they may flag certificate issues that impact your overall security posture. DNS records for parked domains can also become stale, pointing to infrastructure you no longer control. An unused domain name with dangling DNS records poses a risk of subdomain takeover.
Third party risk implications
When conducting vendor security assessments, parked domains in a vendor’s digital footprint raise questions. Why does this vendor have dozens of parked domain names? Are these being actively managed? Could any of these become compromised? A vendor with many parked domains without clear business justification might indicate weak domain management practices overall.
This becomes a relevant data point when conducting vendor due diligence. Gathering information about domain ownership and status helps paint a fuller picture of vendor security hygiene.
Typosquatting and brand impersonation
Threat actors use parked domains as part of typosquatting campaigns, purchasing domains that resemble legitimate primary domain names. Users who mistype a URL are redirected to these parked pages, which may display malicious ads or redirect to phishing sites.
Our STRIKE threat research team regularly identifies networks of typosquatted domains targeting enterprise organizations. These campaigns often start with domains that appear innocuous but become weaponized over time.
How SecurityScorecard detects parked domains in your attack surface
As part of our continuous monitoring of over 12 million organizations, we’ve developed sophisticated parked domain detection capabilities. Our platform scans 4.1 billion IP addresses and domains, utilizing WHOIS data, DNS records, and web crawling to identify parked domains across both your own digital footprint and your vendor ecosystem.
Automatic flagging and alerting
When you’re using a parked domain or one appears in your attack surface, our platform flags it so you can take action. This might mean properly configuring the domain, setting up a redirect to your primary domain, or decommissioning it entirely. For third-party risk management, identifying parked domains in vendor portfolios helps you ask better questions during security assessments.
Digital footprint visibility
Our digital footprint management workflow gives you visibility into every domain attributed to your organization, including those that are parked. You can see which domains have issues, which are actively serving content, and which might need attention. If we’ve incorrectly attributed a domain to your organization, the refute process lets you flag it for review, with most refutes processed within 15 hours.
Fast remediation tracking
We own 97% of the data we collect, meaning we don’t rely on third parties to validate changes. When you remediate an issue or decommission a parked domain, the change is reflected in your scorecard within 24 to 48 hours. This speed matters when managing an extensive portfolio of domains or responding to security findings during a vendor assessment.
Best practices for managing parked domains
Whether you’re securing a domain for future use or managing a portfolio of registered domains, following these practices reduces your security exposure and supports better domain management hygiene.
Keep a centralized inventory
Know every domain you own, including those purchased for future use or brand protection. Domain registration records should be centralized and regularly audited. Shadow IT often encompasses forgotten domains that were never documented in official records. Consider using enterprise risk management tools to maintain visibility across your entire asset inventory.
Prevent accidental expiration
Don’t let valuable domains expire accidentally. Configure automatic renewal for any domain you intend to keep, even if it remains parked. Use domain locking features to prevent unauthorized transfers.
Configure security from day one
Even parked domains should have valid SSL certificates and properly configured DNS. Set up SPF, DKIM, and DMARC records to prevent email spoofing from your parked domains. Free domain options from your registrar might not include these protections.
Use redirects instead of placeholder pages
Rather than leaving a domain parked with a generic placeholder page, redirect it to your main domain. This maintains brand consistency and prevents confusion when customers accidentally visit the wrong URL.
Implement continuous monitoring
Point-in-time audits miss changes that happen between assessments. Continuous monitoring tools catch when domains change status, certificates expire, or new issues emerge. This is especially relevant for organizations with large domain portfolios.
Remove what you don’t need
If you have parked domains with no business purpose, consider letting them expire or transferring them. Fewer domains mean a smaller attack surface to manage and monitor.
Consider managed services for large portfolios
Our MAX managed services team can help organizations with large domain portfolios implement these practices systematically. We work with security teams to establish domain governance processes that reduce risk without creating operational burden. For organizations without dedicated resources, this managed approach handles the heavy lifting of domain management.
Taking control of your domain landscape
Parked domains seem harmless: just a placeholder page waiting for someone to build something. However, in cybersecurity, unused assets pose a risk. Every parked domain in your digital footprint represents a potential entry point, a forgotten asset that could fall into the wrong hands, or a gap in your security posture that attackers could exploit.
Start with visibility
Understanding what a parked domain is marks the first step. The next step is gaining visibility into which parked domains belong to your organization (and your vendors), then taking action to secure them properly or remove them from your portfolio.
See what attackers see
We built our platform to give security teams exactly this visibility. From parked domain detection to full attack surface intelligence, our tools help you see what attackers see before they can use it against you. Because when it comes to domain security, what you don’t know about your digital footprint can absolutely hurt you.
