Dedicated vs Shared IP Addresses: Which Do You Need?

A dedicated IP address is assigned for one customer’s exclusive use within a particular service. A shared IP address is used by multiple customers or services. The choice affects who uses the address alongside you and how much control you have over its use.

The best option depends on the job. Hosting a website, connecting employees to a business application, and sending email have different requirements. An address dedicated to one of these jobs is not automatically used for the others.

Dedicated vs shared IP addresses at a glance

The exclusivity model is illustrated by Cloudflare’s dedicated egress IP service, which assigns outbound addresses exclusively to an account.

What does a dedicated IP actually give you?

It gives you exclusive use of an address for the scope defined by the provider. That might mean a website endpoint, an email-sending address, or the source address used when your team connects to external applications.

One company’s dedicated outbound IP can represent many employees. The employees share it with each other, but unrelated customers of the provider do not use that same address for the service.

Before choosing an option, identify both the direction and the workload: incoming website traffic, outgoing employee connections, or outgoing email. A dedicated address for your website does not, by itself, change the address of the mail server sending your newsletters.

Can a website work well on a shared IP?

Yes. Web hosting can serve multiple domains from one address. For HTTPS, Server Name Indication, or SNI, lets a client indicate which server name it wants during connection setup. This enables different sites to use appropriate certificates while sharing an IP address. The mechanism is defined in RFC 6066.

A dedicated IP is therefore not a general requirement for HTTPS. Check for a specific application or compatibility requirement before making it a deciding factor.

An address also says little about the computing resources behind a website. Its responsiveness depends on hosting capacity, application behavior, caching, and network performance. Buying an exclusive address does not add processing power or bandwidth by itself.

When does a dedicated IP help with business access?

Some business applications accept connections only from approved source addresses. This is often called an IP allowlist.

For example, a partner could allow your team’s dedicated outbound address. Your employees connect through the appropriate business gateway, and the partner sees traffic from that address. Cloudflare’s dedicated egress documentation describes this use case.

The address must be the one the destination actually sees. An internal laptop address or an unrelated hosting address will not serve this purpose. Our NAT guide explains how a gateway can change an outgoing source address.

An approved IP is still only one part of access control. Use the application’s account authentication and other required checks to identify individual users.

Is a dedicated IP better for email?

Sometimes, but it requires the right sending pattern and management.

With a shared sending IP, several senders contribute to the address’s reputation. Gmail’s email sender guidelines explain that another sender’s activity can affect delivery from that shared address. Domain reputation and recipient complaints also matter.

A dedicated sending IP separates your traffic from other customers’ traffic, giving you more responsibility for building and maintaining its reputation. A new address is not automatically trusted by receiving systems.

Amazon SES compares shared and dedicated sending options. Its guidance favors shared addresses when sending is not large and predictable, while dedicated options involve reputation management and warmup. Managed dedicated services may automate some of that work.

For a small or irregular newsletter, a well-managed shared pool can be the more practical choice. For sustained sending with a clear need for separation, evaluate dedicated options with the email provider. Neither choice guarantees inbox placement.

Is dedicated the same as static or reserved?

These terms answer different questions:

• Dedicated: who else may use the address within the service?
• Static: does the assignment remain fixed?
• Reserved: how is the address set aside or retained?

A provider may combine all three properties, but do not assume that it does. For example, a managed dedicated email pool can add or remove addresses as sending demand changes. See Static vs Dynamic IP Addresses and What Is a Reserved IP Address? for the other distinctions.

How should you choose?

Match the option to an actual requirement:

Also confirm the cost, address family, replacement policy, and whether the address stays assigned if you change plans. Exclusive use within one provider does not establish portability to another. For public address continuity across providers, read What Is BYOIP?.

FAQ

Related resources