I learned this week that there are prepaid SIM numbers that are not showing up in their database hence there is no need to SIM reg.
What is interesting is that, these SIM numbers also doesn't expire. You can use it regularly for SMS and calls, load it, some even have unlimited data (enable a low-tier Internet data and it becomes unlimited).
Here's the kicker, there are people who are looking for these numbers and will buy it for a very high premium. Though I'm suspecting these are from the mobile operators because they are hunting these numbers so they can disable it.
Well…
ROFL.
Keep it!