Home Solutions Fixed IP & Private APN
Static IP · Private APN · IP Whitelisting

A fixed address for
every device you deploy.

Zentari Fixed IP gives each of your SIMs a dedicated, static IP address that never changes — so you can reach your devices directly, whitelist them in your firewall, and keep traffic off the public internet using a private APN.

app.zentarinetworks.com / sims / details?id=87362
SIM Detail
8944 1100 0023 4412 62
Assigned to: Roof Camera Array — Site 04
ACTIVE
APN cctv.acme-corp.com PRIVATE
IP Address 185.122.47.83 FIXED
Route Corporate LAN (192.168.1.0/24)
Firewall 62.254.18.0/24 whitelisted ACTIVE
Public internet Blocked — private APN only
Network EE 4G LTE (unsteered)
Traffic route
Device
185.122.47.83
Private APN
Encrypted
Your network

Networks we roam across

Swipe to explore
Vodafone
O2
EE
Three
Orange
Manx Telecom
Two separate capabilities. Both available together.

Fixed IP and Private APN solve different problems.

You can take either one independently, or combine them for fully isolated, addressable device connectivity.

Fixed IP

Your device, always at the same address.

By default, cellular SIMs are assigned a dynamic IP from a shared pool — the address changes every session, and you can't predict it. A Fixed IP gives your SIM a dedicated, permanent IPv4 address. It doesn't change when the device reconnects, when it roams to a different network, or when it reboots.

  • Reach devices remotely without dynamic DNS or VPN clients
  • Add a single IP to your firewall allowlist — never update it again
  • Inbound connections to your device from your infrastructure
  • Useful for CCTV, SCADA, payment terminals, and any device needing management access
Private APN

Traffic that never touches the public internet.

A private APN creates an isolated network path from your SIM directly to your corporate infrastructure — bypassing the public internet entirely. Traffic travels from your device through the mobile network, into Zentari's secure backbone, and out directly to your private network or data centre.

  • Device traffic never exposed to the public internet
  • Connect devices directly into your corporate LAN or VPN
  • Supports PCI-DSS, ISO 27001, and healthcare data isolation scoping requirements
  • Configure per-customer APN with your own naming — fully white-label capable

Why not just use a VPN?

VPN clients require software on the device, ongoing maintenance, and a reliable public internet connection. A private APN removes all of that — no software required, no public exposure at any point in the chain.

Why not dynamic IPs?

Dynamic IPs change every session. You can't whitelist them reliably, can't predict them in advance, and can't make inbound connections to your device without a dynamic DNS service that introduces its own failure mode.

What about shared APNs?

Standard SIMs share an APN with thousands of other devices. Traffic is separated at the IP layer, but it's still routing through the same public infrastructure. A private APN gives you total isolation and lets you apply your own firewall policy.

How It Works

From SIM to your server. No detours.

Zentari handles the network configuration. You tell us your requirements — we provision the SIM, assign the IP, and set up the APN routing to your infrastructure.

1

Tell us your requirements

Share your use case — what devices, how many SIMs, whether you need Fixed IP, Private APN, or both. We confirm the configuration and set up your APN routing (if applicable) before SIMs are dispatched.

2

SIMs arrive pre-configured

Your SIMs arrive with Fixed IP pre-assigned and Private APN pre-configured. There's nothing to set up on the device side — just insert the SIM and connect.

3

Manage from Axis

Every SIM's fixed IP is visible in the Axis Portal alongside its usage, network, and Watchdog status. IP details are also available via the REST API so your own systems can resolve device addresses programmatically.

Private APN traffic flow
Live
Device
Your IoT hardware — camera, sensor, terminal
ICCID: 8944 1100 0023 4412 62
Mobile Network
EE / Vodafone / O2 / Three (unsteered)
IP: 185.122.47.83 (fixed)
Private APN
Zentari secure backbone — no public internet
APN: cctv.acme-corp.com
Your Network
Corporate LAN, data centre, or cloud VPC
192.168.1.0/24
Traffic never traverses the public internet — fully isolated end to end
Technical Specification

Built for environments where security isn't optional.

Designed to support PCI-DSS, ISO 27001, and healthcare data isolation scoping requirements. Ask us for a security summary document.

Network
IP type Static IPv4 — never changes
IP assignment Per-SIM, dedicated
APN type Private (closed) or shared
Traffic routing Zentari secure tunnel → your network
Public internet access Configurable — on or off
Failover Multi-network SIM backed
Security
Firewall IP whitelisting — inbound and outbound
Isolation Private APN traffic never touches public internet
Encryption IPsec tunnel to customer network — contact us to discuss your requirements
Access logging Full session logs in Axis Portal
Device auth IMEI binding per-SIM available
Compliance Supports PCI-DSS and ISO 27001 scoping requirements
Data & Billing
Fixed IP charge Per-SIM monthly add-on
Private APN setup One-time configuration — no ongoing fee
Data billing Same pool as multi-network SIMs
Pooled data Compatible
Portal visibility Per-SIM IP, session, and usage data
API access Full — including IP metadata per SIM
Fixed IP & Private APN

Devices that need a direct line
back to your network.

Tell us about your use case and we'll confirm whether Fixed IP, Private APN, or both is the right fit. No long contracts, no minimum volumes to start.