When Are Addon Domains a Good Idea and When Should You Rethink Them?

Addon domains are a fantastic feature of shared hosting plans. They allow you to host multiple websites within a single cPanel account, saving you the hassle of managing separate accounts for every site. For many users, they’re a perfect solution. However, as with anything, there are scenarios where they’re a great fit—and others where they can create challenges.

Let’s explore when addon domains work well and when it might be time to consider alternatives.

The Good: Addon Domains for Your Own Websites

If all the websites belong to you, addon domains can be a convenient and cost-effective solution. Here’s why they shine:

• Efficiency: Manage all your websites in one cPanel account, reducing the need for juggling multiple logins.
• Cost-effective: Save money by consolidating your hosting needs under one plan.
• Great for smaller sites: If your websites are small, have modest traffic, or your hosting plan has ample resources, addon domains can handle the load with ease.

Addon domains are a great fit for personal projects, small business sites, or hobby websites where you’re comfortable managing everything in one place and understand the risks involved.

The Risks: When Addon Domains Can Cause Problems

The potential downsides of addon domains become apparent as the number of sites grows or when the purpose of hosting changes. Here’s when you might run into trouble:

1. Resource Limitations

Each of our hosting plans has a certain amount of hosting resources, such as CPU and RAM, and everything hosted within it shares that same pool. This can lead to problems if:

• You add too many sites: Even if each website is small, the combined load can overwhelm your plan’s limits.
• One site experiences a spike: A sudden surge in traffic or a resource-hungry app on one site can slow down or even take all your sites offline.

If your hosting plan has plenty of resources and your sites are lightweight, this is less of an issue. However, as you scale, resource management can become a challenge.

2. Security Risks

Addon domains exist within the same cPanel user space. This means that all your websites share the same environment, and there’s no isolation between them. If one site is compromised, the attacker can:

• Access files from all other sites in the account.
• Spread malware across your sites, creating a domino effect.

For your own websites, this risk might be manageable—especially if you maintain strong security practices and keep your apps updated. However, it’s something to consider carefully as the number of sites grows or if you know that you’re not that hot on keeping your software up-to-date.

3. Hosting Websites for Third Parties

Hosting websites for third parties (e.g., clients, friends, or unrelated businesses) under a single account isn’t just risky—it’s a violation of our Terms of Service. Here’s why:

• Security risks: If one site is vulnerable, it can jeopardise the data of other, unrelated entities hosted in the same account.
• Resource competition: A single site can consume all resources, leaving other sites struggling.
• Accountability: As the account holder, you’re responsible for any issues, even if they’re caused by someone else’s site.

These may be acceptable risks if they’re all your own sites, but when you’re hosting third-party websites, a reseller plan or virtual or dedicated server is a much better choice, offering isolation and more robust resource management.

When to Consider Alternatives

If you’re running into performance issues, managing more than a few sites, or hosting sites for others, it might be time to consider these options:

1. Reseller Hosting

• Each website gets its own cPanel account, ensuring isolation between sites for security and performance.
• The ability to grant clients or collaborators their own login access.
• Branding opportunities for your hosting services.

Find out more about reseller hosting here.

2. Virtual Private Server (VPS)

• Dedicated resources, ensuring consistent performance.
• The ability to manage multiple isolated accounts.
• Complete control over security and configuration.

Find our more about fully managed virtual private servers here.

3. Grouping by Legal Entity

• If you’re hosting multiple websites for the same business or legal entity, you can consider grouping them within a single account as addon domains, while keeping unrelated sites on separate accounts.
• This helps reduce the risk of cross-contamination while maintaining cost-efficiency for your end user.

The Bottom Line

Addon domains are a powerful tool, and for many users, they’re the perfect solution for hosting multiple sites. They work brilliantly when:

• All websites belong to you.
• The total resource demand is within your plan’s limits.
• You understand and accept the risks of shared resources and security.

However, if you’re hosting numerous sites, experiencing performance issues, or managing websites for others, you’ll need to explore alternative solutions like reseller hosting or a VPS. These options provide isolation, better performance, and greater peace of mind.