You've come to the right place.
This support article will give you key information about finding your PUK code. You’ll be asked for your PUK code if you enter your PIN 3 times incorrectly to access your phone.
The best way to find your PUK code is through My Vodafone.
You can also get your PUK code:
After entering your PUK code, you’ll need to enter and confirm a new PIN. Your PIN needs to be between 4 and 8 digits long.
You’ll have a maximum of 10 attempts to enter your PUK correctly. After 10 wrong attempts, your SIM will be permanently blocked. If this happens, you'll need to get a replacement SIM to continue using your mobile number.
Entering your PUK code on your Motorola or Sagem device.
If you have a Motorola or Sagem device, you'll need to enter your PUK with this sequence:
05 [PUK] [NEW PIN] [NEW PIN]