You have found a promising broadband deal that includes a public IP address. That may sound like exactly what your business needs, but it is worth taking a closer look before you order.

A public IP address can be static or dynamic, and that distinction may affect remote access, virtual private networks (VPNs), security controls and other business systems. Here is what the terms mean and what you should ask your broadband provider.

What is a public IP address?

A public IP address identifies your broadband connection on the internet. Unlike the private addresses used by devices within your network, it can be reached from outside your premises, subject to the provider’s network configuration and the security controls on your router or firewall.
However, knowing that a broadband service includes a public IP address is not enough. You also need to establish whether that address is static or dynamic.

What is a static (or fixed) IP?

A static IP address is intended to remain the same, including when your router reconnects to the broadband service.
This can be useful for business VPNs, IP allowlisting, remote access, some CCTV systems and services hosted at your premises. It gives authorised users and systems a consistent address through which to reach your network.

What is a dynamic IP?

A dynamic IP address is assigned automatically by the broadband provider and can change following a router reconnection or a change within the provider’s network.
A dynamic address is usually suitable for browsing, email, cloud applications and video calls. However, it may be less suitable for services that require a consistent address or only permit access from an approved IP address.

Does my business need a static IP address?

Not every business needs a static IP address. If your team mainly uses cloud-based services and makes outbound connections to the internet, a dynamic public address may be sufficient.
A static public IP address is usually worth considering when your business relies on systems that need to find or recognise your network consistently. Choosing the right option at the outset can help avoid interrupted access, repeated reconfiguration and unexpected additional costs.

Some common use cases of a fixed include:

Remote access and VPNs: If staff or IT support providers connect directly to a VPN or system at your premises, a static address provides a consistent destination. Cloud-based remote-access services may not require one.

IP allowlisting: Cloud platforms, supplier portals and financial systems can sometimes be configured to accept connections only from an approved business IP address. A static address prevents that approved address from changing unexpectedly.

Hosting services: A static address may be required if you run a web, email or database server from your premises. You should also check the provider’s terms, security requirements, upload capacity and support for hosted services.

CCTV and building systems: Some security cameras, access-control systems and monitoring tools require a direct connection to your premises. Whether they need a static IP depends on how the system has been designed, as many modern products use a cloud service instead.

Connections between business sites: A site-to-site VPN may use static IP addresses to create a dependable connection between offices or other locations.
A static IP does not, by itself, improve broadband speed, connection reliability or VoIP call quality. Its value comes from providing a consistent address for systems that need one.

What should I ask a broadband provider?

You do not need to be a technical expert to ask the right questions. Before ordering, ask:

• Will our business receive its own public IP address, or will it be shared with other customers?
• Is the public IP address static or can it change?
• Is a static IP included, available at an additional cost or restricted to certain packages?
• Will it remain the same after a router restart, service fault or network change?
• Will this service support our VPN, remote-access, CCTV or other business systems?
• What help is available to configure the router and check that our systems work correctly?
• Can you confirm the agreed IP address arrangement in writing before we order?

If you are unsure, share these questions with your IT provider or speak to a business broadband specialist. Clear advice before installation will help you choose connectivity that supports the way your business operates.