Fixed IP mobile data SIMs

Fixed IP Mobile Internet Access

Our 3G mobile data-only SIM cards come with no minimum term, low monthly rentals, and pay for what you use. They provide fixed IPv4 address with full 1500 byte MTU access to the Internet with no filtering. 
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Mobile Data
Straight forward Internet access for mobile devices

Key Features


Fixed IP

Our data SIMs come with a fixed IPv4 address as standard. 

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No Filtering

There are no transparent proxies or devices that will block any sort of traffic.

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NAT can be a problem with some protocols, but as mentioned all our data SIMs have static IPv4 addresses and there is no NAT invoved.


No Minimum Term

You pay monthly for the SIM, so you can cancel it after the first month if you wish, or carry on using for as long as you need to.


Initial Cost of the SIM £10.00 +VAT Learn more

One-off cost for the SIM

£10.00 +VAT one off +postage
Monthly SIM rental £2.00 +VAT Learn more

On going cost of the SIM

£2.00 +VAT per month
Cost for the Data 1.75p +VAT Learn more

Data usage either way

1.75p +VAT per megabyte

Further Features

  • Sensible pricing with no minimum term. Pay for what you use.
  • Real fixed IPv4 addressing
  • No filtering
  • No NAT
  • Ideal for digital signage, remote monitoring stations etc
  • Disable/Enable SIM cards from the Control Pages
  • Our control pages will graph and chart the traffic usage of a SIM
  • Use our SMTP email servers to relay outgoing email

3G Coverage lookup tool

Use this form to check for 3G coverage in your area. (This only checks 3G, not 4G.)

Further Information

Normally a Data SIM is allocated a single fixed legacy IP address. This is used when you connect and you do not need to set any username, password or APN to use the Data SIM in the UK. Simply insert in to your equipment.

The service has no filtering. The combination of fixed real legacy IP address and unfiltered connection gives you a real connection to the Internet. No longer will you have trouble accessing a site that your mobile provider has mistakenly decided has adult content. No longer will you have problems sending an email via your corporate mail server because port 25 is blocked. This is a real Internet connection on your mobile device. You can even control the reverse DNS for your IP on our control pages. There is no NAT involved, you can ping your iPad!

IPv6 is not yet available directly, but can be routed via IPv4 (protocol 41) tunnels if required. We hope to have native IPv6 soon and so provide a full Internet access service on mobile data.

Our voice and data SIM cards are ideal for a corporate network or for a wholesale customer to set up their own mobile service.

We can offer branding with professional quality SIM printing and pre-set settings.


You can specify a username and password for a DSL line and receive routing for the IP addresses for that line - this allows the Data SIM to be used in a mobile router to provide a backup for DSL lines with full legacy IP routing including blocks of IPs, and full 1500 byte MTU support.

Data SIMs are provided on a full size SIM card with push out mini-SIM, and within that a push out micro-SIM. We also print the nano-SIM outline. Cutting the Data SIM down is easy but at your own risk (to SIM and mobile device), so we suggest doing so before you activate the Data SIM. Nano SIM cutters are available in the Internet but otherwise small straight bladed nail scissors work well.

The APN need not be set in the UK, if required then set to Username and password are not normally needed unless using as ADSL backup or with corporate L2TP relay (see below).

The legacy IP is allocated automatically. The remote legacy IP (i.e. our end of PPP link) is usually not meaningful and may show as We can route blocks of legacy IPs as well. Full 1500 byte MTU is supported.

The Data SIM only works on the Three UK network, you can check for coverage with the tool below.

Roaming is disabled at present.

The Data SIMs do not provide voice calls or texts. We offer a SIP2SIM voice SIM service if you need these.

We can print our own artwork on SIMs, see our SIM Branding page.

Contact Sales

phone 03333 400222
(Mon-Fri 9am-5pm)
sms 01344 400222

Contact Support

phone 03333 400999
(Mon-Fri 8am-6pm,
Sat 10am-2pm)
sms 01344 400999