Where does "Included in Block" value comes from? I was exploring transactions inside of a blockchain using  this site, and inside of a transaction I noticed there is attribute called Included in Block and its description is: block this transaction is mined and confirmed in. 
(I don't know does it matter but, transaction I was looking is this one)

I was wondering, how is this attribute populated? The reason of my question is that I was exploring how can you, by looking at transaction inside of your UTXO, check in which block transaction was included (and then I found this attribute). Is this the right way?
Thank you!
I was wondering, how is this attribute populated?

The site uses an index that simply remembers this information. If a block B is seen that contains a transaction T, an entry is stored in the database that signifies &quot;transaction T is in block B&quot;.

by looking at transaction inside of your UTXO, check in which block transaction was included (and then I found this attribute)

The UTXO set does not contain this information, nor can it be efficiently requested from arbitrary nodes in the network.