Fixed IP Broadband Explained: Why Your Business Needs One

What is a Fixed IP broadband, and why is a fixed address vital?

A fixed IP address (also called a static IP) is an address assigned to your connection that doesn’t change. When you log off and log back on, it’s the same. When you restart your router, it’s the same. It stays constant.

A dynamic IP address, by contrast, is temporary. Your ISP assigns it from a pool of addresses that get recycled. When you disconnect, the address goes back into the pool and might be assigned to someone else. When you reconnect, you get a new one from the pool. That’s why your IP address might be 1.2.3.4 one day and 5.6.7.8 the next.

For consumer use, dynamic addresses work fine. For businesses, they create problems. If you’re running a system that relies on people connecting to your office IP address, a changing address breaks that system.

Why Businesses Need Fixed IP Broadband

Several common business systems rely on a fixed IP address:

Remote Access and VPN

• If your team connects to your office network remotely via VPN, they need to connect to a stable address. A changing IP means changing VPN connection details regularly, which is impractical and creates security gaps.

CCTV and Security Systems

• Security camera systems stream footage to the cloud or to a remote monitoring service. They need to know your office’s fixed IP address to send that footage somewhere reliable. If your IP changes, the camera can’t find the destination and the feed stops.

VoIP Telephony

• Cloud-based phone systems often rely on your IP address to route calls correctly and to identify your office location for emergency services. A business VoIP system works best with a fixed IP address.

Server Hosting or Internal Applications

• If your office hosts any server or application that external users or branches access by IP address, that address needs to be assigned a fixed IP address.

Port Forwarding

• If you’re running services that require port forwarding (video conferencing, file sharing, remote desktop), those services rely on your IP address staying constant.

In practice, most small offices can get away with dynamic IPs by using DNS services that automatically update when your IP changes. But that adds complexity. A fixed IP address removes the problem entirely.

How Fixed IP Broadband Works

With fixed IP broadband, your ISP assigns an IP address specifically to your office and commits not to change it. That address stays with your connection indefinitely.

It’s simple in concept but requires some backend setup. Your ISP needs to:

• Reserve an address for you from their available pool
• Configure their network so that the address always routes to your connection
• Document it in their systems, so support staff know it’s yours

From your perspective, it works exactly like a normal business broadband fixed IP connection. You turn on your router. It connects. That IP address is yours.

Adding a Fixed IP Broadband to Your Existing Connection

If you already have business broadband but it’s currently dynamic, most ISPs can add a static IP to your existing line. It usually involves:

• A small setup fee (typically £50-100, depending on your provider)
• A small monthly uplift to your bill (typically £5-10 per month)
• A configuration change on your account that takes effect within a few days
• No router replacement or downtime required

Call your ISP and ask if they offer a fixed IP address as an add-on. Many do. If they don’t, or if their pricing seems high, contact Multidata, and we can check what’s available at your address.

Fixed IP vs Dynamic IP: When You Actually Need It

Not every business needs a fixed IP broadband. If your team uses standard business tools (email, Microsoft 365, cloud storage) and doesn’t run any remote-access systems, you probably don’t.

You probably do need one if:

• You run a VPN that staff use to access office systems remotely
• You have CCTV or security camera systems
• You run a VoIP phone system that needs reliable incoming call routing
• You host any service or application that external users access by IP address
• You’re running a small server or NAS that people connect to remotely

If none of those applies, a dynamic IP works fine, and you can skip the fixed IP broadband upgrade.

Fixed IP and Security

A common misconception is that a fixed IP is less secure because it’s “findable.” That’s not how network security works. Whether your IP address is fixed or dynamic, security comes from:

• Strong firewall rules (blocking unwanted incoming traffic)
• Proper authentication (usernames, passwords, or certificates)
• VPN encryption for remote access
• Regular security updates on all systems

A fixed IP address doesn’t make you more vulnerable if those protections are in place. And in many cases, a fixed IP address combined with proper firewall rules is more secure than a dynamic IP address with misconfigured access control.

Fixed IP Broadband at Different Speed Tiers

Fixed IP broadband is available at most speed tiers. Whether you’re running SOGEA, FTTP, or a dedicated leased line, you can add a fixed IP address. The add-on cost is usually the same regardless of your broadband speed.

For maximum reliability, pair a fixed IP with a dedicated leased line or FTTP connection. You get a guaranteed speed, a guaranteed uptime SLA, and a guaranteed fixed IP that supports all your business systems reliably.

What Multidata Recommends

If you’re running any system that relies on your IP address staying the same, add a fixed IP to your connection now. The cost is minimal. The benefit is significant. You remove the risk of systems breaking because your ISP reassigned your address.

When you upgrade your broadband or switch providers, make sure your new connection includes a fixed IP option. It’s a basic business requirement, not a luxury add-on.

If you’re unsure whether you need one, talk to our team. We can audit your current systems and tell you whether a fixed IP would solve real problems in your office.