user127705: There are many service to get all fo the ip address in bitcoin mainnet but I can't find the similar way to get all ip address in testnet.Is there a way to do it?

user-1: Different ways to get IP address of bitcoin nodes on testnet:
1: Check A DNS record for one of the domains used by DNS seeds:
testnet-seed.bitcoin.jonasschnelli.ch
seed.tbtc.petertodd.org
seed.testnet.bitcoin.sprovoost.nl
testnet-seed.bluematt.me


I tried connecting to one of these nodes on port 18333 with addnode to confirm and it works.

Run own test DNS seeder to crawl the network using https://github.com/sipa/bitcoin-seeder

Run your own bitcoin node, save IP address for peers, ban all for 1 hour, save IP address for new peers and repeat until you have enough addresses. You can get lot of addresses in few minutes: https://pastebin.com/raw/jxkEpgEq

Use Bitnodes API which returns testnet nodes as well in the response: https://bitnodes.io/api/#list-nodes or Use shodan filters like User-Agent:/Satoshi/ port:"18333" which returns few nodes



127705: <p>There are many service to get all fo the ip address in bitcoin mainnet but I can't find the similar way to get all ip address in testnet.Is there a way to do it?</p>
 -1: <p>Different ways to get IP address of bitcoin nodes on testnet:</p>
<p>1: Check <code>A</code> DNS record for one of the domains used by DNS seeds:</p>
<pre><code>testnet-seed.bitcoin.jonasschnelli.ch
seed.tbtc.petertodd.org
seed.testnet.bitcoin.sprovoost.nl
testnet-seed.bluematt.me
</code></pre>
<p><a href="https://i.stack.imgur.com/uo0vp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uo0vp.png" alt="dns-records" /></a></p>
<p>I tried connecting to one of these nodes on port 18333 with <code>addnode</code> to confirm and it works.</p>
<ol start="2">
<li><p>Run own test DNS seeder to crawl the network using <a href="https://github.com/sipa/bitcoin-seeder" rel="nofollow noreferrer">https://github.com/sipa/bitcoin-seeder</a></p>
</li>
<li><p>Run your own bitcoin node, save IP address for peers, ban all for 1 hour, save IP address for new peers and repeat until you have enough addresses. You can get lot of addresses in few minutes: <a href="https://pastebin.com/raw/jxkEpgEq" rel="nofollow noreferrer">https://pastebin.com/raw/jxkEpgEq</a></p>
</li>
<li><p>Use Bitnodes API which returns testnet nodes as well in the response: <a href="https://bitnodes.io/api/#list-nodes" rel="nofollow noreferrer">https://bitnodes.io/api/#list-nodes</a> or Use <a href="https://www.shodan.io/search/report?query=User-Agent%3A%2FSatoshi%2F+port%3A%2218333%22" rel="nofollow noreferrer">shodan</a> filters like <code>User-Agent:/Satoshi/ port:&quot;18333&quot;</code> which returns few nodes</p>
</li>
</ol>
