user88850: Recently I've been looking into experimenting with querying the blockchain. I am running bitcoin-core, full node locally and updated.
I am mainly interested in querying watch-only addresses, each address is saved under a unique label (one to one). After rescanning, I try to query a randomly chosen address with "getreceivedbyaddress" (in this case: 367f4YWz1VCFaqBqwbTrzwi2b1h2U3w1AF )
bitcoin-cli displays a value of approx. 171,500 BTC
blockexplorer.com displays the same value as the bitcoin-cli
blockcypher.com and blockchain.com display nearly the same value - 33,000 BTC (which could be due to latency issues) 
I would like to know if this is an issue from my end or if there's something I do not understand.

user13866: When I looked, 

one site said there were 120612 transactions
one site said there were 120614 transactions

one site alerted me that there were unconfirmed transactions
I surmise this is a highly active address and that different sites may have differing delays and differing thresholds for confirmation. 
As Raghav noted in a comment:

another factor is that some explorer count change sent to the same address as an additional incoming btc tx, while others (blockchain.info) don't. It would explain such a large difference in this case, since the address seems to output a lot of change to itself.


88850: <p>Recently I've been looking into experimenting with querying the blockchain. I am running bitcoin-core, full node locally and updated.</p>

<p>I am mainly interested in querying watch-only addresses, each address is saved under a unique label (one to one). After rescanning, I try to query a randomly chosen address with "getreceivedbyaddress" (in this case: 367f4YWz1VCFaqBqwbTrzwi2b1h2U3w1AF )</p>

<p>bitcoin-cli displays a value of approx. 171,500 BTC
blockexplorer.com displays the same value as the bitcoin-cli
blockcypher.com and blockchain.com display nearly the same value - 33,000 BTC (which could be due to latency issues) </p>

<p>I would like to know if this is an issue from my end or if there's something I do not understand.</p>
 13866: <p>When I looked, </p>

<ul>
<li>one site said there were 120612 transactions</li>
<li>one site said there were 120614 transactions</li>
</ul>

<p>one site alerted me that there were unconfirmed transactions</p>

<p>I surmise this is a highly active address and that different sites may have differing delays and differing thresholds for confirmation. </p>

<p>As <a href="https://bitcoin.stackexchange.com/users/7272/raghav-sood">Raghav</a> noted in a comment:</p>

<blockquote>
  <p>another factor is that some explorer count change sent to the same address as an additional incoming btc tx, while others (blockchain.info) don't. It would explain such a large difference in this case, since the address seems to output a lot of change to itself.</p>
</blockquote>
