Static IP business broadband UK: the complete 2026 guide

1. What is a static IP and how does it differ from dynamic IP?

A static IP address is a fixed numerical address (like 86.143.124.95) that your internet provider permanently assigns to your business broadband line. It does not change when you restart your router, when your provider performs network maintenance, or over time. By contrast, a dynamic IP address is a temporary address allocated from a shared pool by your provider's DHCP server; it can change every few hours, every few days, or whenever the provider's systems renew the lease.

For most everyday uses (web browsing, email through cloud providers, video calls, streaming, cloud apps like Microsoft 365 or Xero), a dynamic IP works perfectly and the constant change is invisible to the user. For specific business uses where something or someone outside your premises needs to reliably reach your network, the change matters because the destination address keeps moving.

2. Does my UK business actually need a static IP in 2026?

Most UK SMEs do not need a static IP, but a meaningful minority genuinely do. The honest test is whether something or someone outside your premises needs to reliably reach a service running on your network at a fixed address. If yes, you need a static IP; if no, you do not. Use this decision flow to find out.

The single most common procurement mistake is paying for a static IP because the broadband provider sales team suggests it, when the business has no operational use for it. A static IP does not make broadband faster, more secure (in itself), or more reliable. It only matters when something specific on your premises needs to be reachable from outside at a fixed address.

3. Use cases that genuinely require a static IP

These are the seven UK business use cases where a static IP is genuinely required, ordered roughly by how often each one drives static IP demand among UK SMEs in 2026.

4. Static IP pricing on every major UK provider

Static IP pricing varies significantly across UK business broadband providers in 2026. This table compares the static IP arrangement on every major UK business broadband product, so you can quickly see whether your existing provider offers static IP as standard, as a paid add-on, or via a higher contract tier.

Pricing changes from time to time and varies by promotion, contract length, and address. Always confirm the current static IP cost at the point of ordering and factor it into the total full-term contract calculation. See our business broadband contract guide for more on calculating total costs across UK providers.

5. CGNat and why some connections cannot host services

CGNat (Carrier-Grade NAT) is a network address translation technique used by some UK ISPs (and many UK mobile networks) to share a single public IPv4 address among multiple customers. Customers on a CGNat connection do not have a public IP at all, even a dynamic one; they share an address with potentially thousands of other customers, and inbound connections are not possible without explicit configuration on the carrier side. In 2026, CGNat is most common on UK mobile broadband, some altnet residential products, and a few budget broadband providers.

What this means for UK businesses:

• You cannot host services from a CGNat connection. CCTV remote access, VPN endpoints, hosted servers, and IP allowlisting all rely on having a real public IP, even a dynamic one. CGNat blocks all of these.
• Dynamic DNS does not solve CGNat. Some workarounds (Cloudflare Tunnel, Tailscale, Twingate) bypass the need for a public IP entirely, but they require explicit setup.
• Most UK fixed-line business broadband does NOT use CGNat. BT, Sky, TalkTalk, Vodafone, Virgin Media, Trooli, Hyperoptic, Community Fibre, and most other UK fixed-line business products give you a real public IPv4 address (dynamic by default, static if you pay for it). CGNat is mostly a mobile and budget-residential issue.
• Always confirm at the point of ordering. If you specifically need a real public IP, ask the provider directly whether the connection is CGNat or whether you receive a real (dynamic or static) public IPv4.

6. IPv4 vs IPv6 static IPs in 2026

UK business broadband static IP products in 2026 are still predominantly IPv4-based. IPv4 addresses are 32-bit (like 86.143.124.95) and have been the default since the 1980s; the global supply has been exhausted since 2011, which is why many ISPs now charge for IPv4 static addresses or move dynamic-IP customers to CGNat. IPv6 addresses are 128-bit (like 2a00:23c4:5b81:7c00::1) with effectively unlimited supply, but legacy services and configurations often still rely on IPv4.

What this means in practice for UK businesses ordering static IPs in 2026:

• Most UK business broadband providers offer static IPv4 by default, sometimes with optional static IPv6 alongside it. IDNet on the Trooli network is a notable example that includes both IPv4 and IPv6 with no CGNat.
• Static IPv6 is increasingly common on altnet networks, particularly Hyperoptic, Community Fibre, and CityFibre-based products. Some altnets (and some Openreach FTTP products) include IPv6 alongside IPv4 by default.
• Dual-stack (IPv4 + IPv6) is the technical default for new business broadband in 2026. Most modern routers handle this transparently; the IPv4 static IP is what the rest of the internet still mostly uses, while IPv6 is the future-proof addition.
• For most UK SME use cases (VoIP, CCTV, VPN, IP allowlisting), IPv4 is what you actually need. IPv6 is useful for technical businesses with specific requirements; for everyday SME static IP needs, focus on getting the IPv4 static and treat IPv6 as a bonus.

7. Static IP and VoIP after the 2027 PSTN switch-off

The UK PSTN switch-off on 31 January 2027 (Ofcom, 2025) is forcing UK businesses currently on traditional analogue or ISDN phone lines to migrate to VoIP-based digital voice services. This migration is the single biggest driver of UK SME static IP demand in 2026. Whether you actually need a static IP depends on which type of VoIP solution you choose.

8. Static IP for CCTV, IP cameras, and remote access

UK businesses commonly want to view CCTV cameras at their premises remotely, whether that is checking on a shop overnight from a phone, monitoring a warehouse from a head office, or letting an alarm response company access camera feeds during incidents. Whether you need a static IP for this depends on the camera system.

• Cloud-managed CCTV (Verkada, Eufy Security, Ring for Business, some Hikvision Hik-Connect models): No static IP needed. The cameras connect outbound to the cloud platform, and you view them through the cloud app. This is the simpler 2026 default for small UK businesses, particularly cafes, salons, and small retail.
• Traditional NVR or DVR with port forwarding: Static IP is highly recommended. Without one, you would need Dynamic DNS (DDNS) to track the changing public IP and update DNS records automatically; this works but is less reliable than a fixed address.
• Enterprise-grade IP camera systems (Axis, Bosch, Hanwha, Hikvision Pro): Static IP is the recommended configuration for reliable remote access, off-site backup, and integration with alarm response systems.
• Dynamic DNS as a workaround: Services like NoIP, DynDNS, and Cloudflare DNS can track a dynamic IP and provide a stable hostname. This works but adds a moving part that can fail; for serious CCTV deployments where reliable remote access matters, a static IP from the broadband provider is the cleaner setup.

For most UK small businesses installing CCTV in 2026, the cloud-managed option (Verkada, Ring, Hik-Connect cloud) is genuinely the easier choice and removes the static IP requirement entirely. Static IP for CCTV becomes more relevant for businesses with larger camera estates, integration with alarm response companies, or compliance requirements that mandate on-premises recording.

9. How to order a static IP from your provider

Ordering a static IP from a UK business broadband provider is straightforward in 2026. The exact steps vary slightly by provider, but the general flow is the same.

1. Confirm your business broadband product supports static IP. Most UK business broadband products do; some entry-level consumer broadband products do not. Check the product page or call the provider's business sales team.
2. Order the static IP add-on either at the point of new order or as a mid-contract change. Most providers can add static IP to an existing contract without resetting the term; some treat it as a new product order with separate billing.
3. The provider assigns the static IP and notifies you. This typically takes a few hours to a few days. You will receive the IP address (and gateway and DNS server addresses if needed) via email or your account portal.
4. Configure your router with the static IP if required. Some providers configure the static IP automatically over PPP or DHCP at the network side; others require you to enter the static IP manually into the router's WAN settings. See section 10 for the router configuration steps.
5. Test connectivity from outside. Use a phone on mobile data (4G or 5G) to verify that the static IP responds correctly when probed from outside your premises.
6. Update DNS records, firewall rules, and external services. If you are setting up a service that other systems will reach (CCTV, VoIP, VPN, hosted server), update the relevant external configurations to point to the new static IP.
7. Document the static IP, gateway, DNS, and any associated configuration. Keep this record for future reference, particularly if your business has external IT support that may need to know the address details.

Some UK providers (TalkTalk Business FTTP, Zen, IDNet, Virgin Media Business Voom 600+) include static IP automatically with eligible packages, in which case the address is delivered as part of standard provisioning rather than as a separate order.

10. How to configure your router for a static IP

Once your provider has assigned a static IP, the next step is configuring your router to use it. Many UK business broadband providers ship a router preconfigured for the static IP address; some require you to enter the address details manually. The configuration steps depend on whether your line uses PPPoE (most FTTC and FTTP) or DHCP (some altnet and cable connections).

1. Log in to your router's admin interface. This is typically 192.168.1.1 or 192.168.0.1 in a web browser, with credentials supplied by your provider or printed on the router label.
2. Find the WAN or Internet settings. This may be under "Internet", "WAN", "Connection settings", or similar depending on the router.
3. If your provider uses PPPoE, enter the username and password supplied by the provider. The static IP is typically applied automatically at the network side once these credentials authenticate; no manual IP entry is needed in the router.
4. If your provider uses DHCP with a static reservation (common on Virgin Media and some altnet connections), the static IP is delivered automatically when the router connects. No router configuration is needed.
5. If your provider requires manual static IP configuration (less common in 2026), enter the static IP, subnet mask, gateway, and DNS server addresses provided by the ISP into the router's WAN configuration.
6. Save and reboot the router if prompted. The router should now connect using the static IP.
7. Verify the configuration by visiting whatismyip.com or icanhazip.com from a device on your network. The displayed public IP should match the static IP your provider assigned.
8. Configure port forwarding for any services that need it. For CCTV, VoIP, or hosted servers, set up the relevant port forwards in the router so inbound traffic on specific ports reaches the correct device on your local network.

If you are configuring port forwarding for the first time, the most common port assignments are 80 and 443 for web servers, 5060 and 5061 for SIP/VoIP, 554 for RTSP video streams, and various provider-specific ports for CCTV cloud services. Always check the manufacturer's documentation for the specific service you are forwarding.

11. Alternatives if you cannot get a static IP

If your business broadband cannot supply a static IP (for example, because your premises is on CGNat, on a residential-grade altnet without static IP support, or on a mobile broadband connection), several modern alternatives can deliver the same operational outcomes without needing a fixed public address.

For most UK SMEs that thought they needed a static IP, one of the above alternatives often turns out to be the simpler and cheaper solution in 2026. Static IP is still the right answer for some specific use cases (on-premises VoIP PBX, IP-allowlisted access to external systems, traditional VPN endpoints), but the modern alternatives are increasingly capable.

12. Troubleshooting common static IP problems

Static IP setups occasionally hit issues that can be confusing if you are not used to network configuration. These are the five most common UK SME static IP problems in 2026 and how to fix them.

1. "My static IP shows as a different address externally." Most likely your router's WAN settings have not been updated, or the connection is still using DHCP-assigned dynamic IP. Reboot the router; if the issue persists, contact the provider to confirm the static IP is properly provisioned at their end.
2. "Inbound connections are not reaching my service." Check three things in order: first, that the router has the correct port forwarding rule for the destination device; second, that the device has a fixed local IP that matches the port-forward rule; third, that any firewall on the device itself (Windows Firewall, macOS Firewall) is allowing the inbound traffic.
3. "My CCTV / NVR works locally but not from outside." Almost always a port forwarding or firewall issue rather than a static IP issue. Confirm port forwarding is correct for the camera or NVR's specific ports (typically 80 / 443 / 8000 / 554, depending on the model and service).
4. "VoIP calls drop when the line is idle." Check the SIP keepalive settings on the VoIP system or PBX; the issue is often that NAT mappings are timing out faster than the keepalive interval, not that the static IP is failing. Increase keepalive frequency to under 30 seconds typically.
5. "I cannot configure inbound traffic at all." Check that your connection has a real public IP, not a CGNat shared address (see section 5 for the test). If you are on CGNat despite paying for a static IP, contact the provider; they should have configured a real public IP as part of the static IP service.

For complex configurations, a competent local IT support provider can usually resolve a static IP setup issue within an hour. If you do not have IT support, your broadband provider's business support team should be the first port of call; most major UK providers have technical support engineers familiar with static IP configurations.

13. Five questions to ask before paying for a static IP

1. Do I genuinely have a use case that requires a static IP? Walk through the decision flow in section 2. If none of the use cases in section 3 apply, do not pay for a static IP. The most common procurement mistake is paying for one that the business does not operationally need.
2. Could a modern alternative solve the same problem without a static IP? Tailscale, Cloudflare Tunnel, cloud-hosted VoIP, and cloud-managed CCTV all remove the static IP dependency for many UK SME use cases. Check whether one of these fits before committing to a paid static IP add-on.
3. Does my preferred provider include static IP free, or charge extra? TalkTalk Business FTTP, Zen Internet, and IDNet all include free static IP; most others charge £2 to £10 per month + VAT. Over a 24-month contract, this can be £240 difference.
4. Do I need IPv4 only, or do I also need IPv6? For most UK SME use cases, static IPv4 is what you need. IPv6 is a bonus for future-proofing. IDNet and some altnet partners on Trooli's and CityFibre's networks include both.
5. Will my premises receive a real public IP, not a CGNat shared address? This is critical. If the connection is on CGNat, even paying for a static IP may not give you a usable public address for inbound services. Confirm with the provider's technical team before ordering.