Which 3G Networks offer public IPs?

Reference:
[1] http://forums.whirlpool.net.au/archive/1501815


We need an unofficial list of our 3G ISP specs given their differences and it's not practical for anyone to have to buy and try dongles/SIMs from each network (both pre & post paid) just to try.

While all will allow web browsing & email, beyond that seems cloaked in secrecy.

Many networks are actually private networks, behind a NAT, without a publicly accessible IP (either dynamic or static) preventing many common functions such as remote control (of routers and PCs), IP cameras, VPNs & servers. Presumably there aren't enough public IP addresses to go round but at least there should be mechanisms such as port forwarding. Or other options?

Telstra 3G (post paid) is private (& I would assume also prepaid) but I'm advised Bigpond offers public IPs – except I'd need to sign up to a contract just to try!! I'm aware Virgin Broadband at Home (post paid) is public (via Optus 3G) but suspect Virgin prepaid is private. I have No Further Information (NFI) on Optus, 3/Vodafone or others (if different from their host such as Bigpond & Telstra on NextG).

=============at 2010-Aug-2, 1:38 pm===============
Exetel – external, fixed IP
Beagle – external dynamic IP, optionally fixed IP.
Optus – external dynamic IP
Telstra Prepaid – Private network behind NAT
Vodafone – mostly external dynamic IP (but not always – hard to figure out why)

Virgin prepaid is public (VirginInternet APN)

Internode only offer public, with optional static

Telstra BigPond is public

Telstra 3G internet is only private for the usual default APN's:
telstra.internet
telstra.wap
telstra.iph

However if you're a Telstra business mobile account holder you can request the "GPTEXB3" code to be activated on your account to allow access to the "telstra.extranet" APN.
When telstra.extranet is used (billed with the same data allowances as telstra.internet) you will be allocated a public dynamic IP in the 123.209.x.x IP range. If you keep your device active you'll have the same IP for days or weeks at a time so it's almost static!