Vodafone NZ have released new IPCC files (well alot of carriers have)
http://appldnld.apple.com.edgesuite.net/content.info.apple.com/iPhone/CarrierBundles/061-6562.20090612.AvshB/Vodafone_nz.ipccthey have 3 APN's set
www.iphone-vodafone.net.nz (type-mask = 1 (data))
live.vodafone.com (type-mask = 4 (mms))
www.vodafone.net.nz (type-mask = 48 (32+16) - Tethering

? the 32+16 bits are not known fully as of yet...
<key>MMS</key>
<dict>
<key>GroupModeEnabled</key>
<false/>
<key>MMSC</key>
<string>
http://pxt.vodafone.net.nz/pxtsend</string>
<key>MaxMessageSize</key>
<integer>307200</integer>
<key>MaxVideoBitrate</key>
<integer>131072</integer>
<key>Proxy</key>
<string>172.030.038.003:8080</string>
<key>Version</key>
<string>1.2</string>
</dict>
<array>
<dict>
<key>apn</key>
<string>www.iphone-vodafone.net.nz</string>
<key>password</key>
<string></string>
<key>type-mask</key>
<integer>1</integer>
<key>username</key>
<string></string>
</dict>
<dict>
<key>apn</key>
<string>live.vodafone.com</string>
<key>password</key>
<string></string>
<key>type-mask</key>
<integer>4</integer>
<key>username</key>
<string></string>
</dict>
<dict>
<key>apn</key>
<string>www.vodafone.net.nz</string>
<key>password</key>
<string></string>
<key>type-mask</key>
<integer>48</integer>
<key>username</key>
<string></string>
</dict>
</array>