0872 numbers are service numbers, where the caller pays a higher amount, compared to normal landline call rates, for the service being provided.
Ofcom, which regulates the call charges in the UK, has set a range of 11p to 68p per minute, for 0872 numbers. This is in addition to a 13p charge per-call. As such, 0872 numbers cost more to call, compared to calling a normal landline.
FredomPop is a provider of VoIP services. The packages on offer from FeedomPop requires the subscriber to pay for the data consumed. Subscribers get free talk time in minutes for the duration of their data plan. The free package on offer gives subscribers 200 minutes to any number.