IP Addresses, Static IPs & Advanced Connectivity

This article explains how IP addressing works on Vfast broadband services, including dynamic IPs, IPv6, and why static IP addresses are not currently offered.

Do You Provide Static IP Addresses?

No.

Vfast does not provide static IP addresses, and there is currently no option to purchase one.

Most customers do not need a static IP for normal use such as:

• Browsing
• Streaming
• Gaming
• Video calls
• Working from home

How IP Addressing Works on Vfast

Depending on your service type, your connection will use:

• Dynamic IPv4 addressing, or
  
• Dual-stack connectivity (IPv4 via CGNAT and IPv6)

Your public IP address may change from time to time. This is normal for residential broadband services.

What Is Dual-Stack Connectivity?

Dual-stack means your connection supports both:

• IPv4 (delivered through Carrier-Grade NAT), and
  
• IPv6 (the newer addressing system designed to replace IPv4)

Many modern websites and services already support IPv6 and will use it automatically when available.

For Advanced Users: IPv4 and CGNAT

On some Vfast services, IPv4 traffic is delivered using Carrier-Grade NAT (CGNAT).

What this means:

• Your connection shares a public IPv4 address
  
• Outbound connections (web browsing, streaming, gaming, VPN clients) work normally
  
• Incoming IPv4 connections may not work by default

You may notice limitations if you use:

• Port forwarding
  
• Hosting servers or game servers
  
• Remote access to cameras or NAS devices
  
• Some peer-to-peer or legacy applications

IPv6 connections are not affected by CGNAT and allow direct addressing where supported.

What If a Service Doesn’t Work as Expected?

If you experience issues with a specific application or service:

Contact the Service Desk.

We can check:

• Whether IPv6 is available on your connection
• Whether your router supports IPv6

If required, we may:

• Enable IPv6 on your router
• Advise on a compatible router
• In some cases, move your service back to standard dynamic IPv4

All changes are handled by the Service Desk to ensure stability.

Can I Use Dynamic DNS (DDNS)?

Yes.

Dynamic DNS can be useful if your IP address changes and you need remote access.

DDNS works best with:

• IPv6-enabled services, or
  
• Standard dynamic IPv4 connections

See our Dynamic DNS for Remote Access guide for more details.

Summary

• Static IPs are not available on Vfast services
• Connections use dynamic IPv4 or dual-stack IPv4 (CGNAT) and IPv6
• CGNAT can affect services that need incoming connections
• IPv6 avoids these limitations where supported
• The Service Desk can help with compatibility issues
• Most customers never notice any difference in day-to-day use