The website, map, and API are offline, but here is a copy of the latest list of online nodes.
Stagenet Clearnet Nodes (6)
http://stagenet.xmr-tw.org:38081 (get_info)
http://node2.monerodevs.org:38089 (get_info)
http://node3.monerodevs.org:38089 (get_info)
http://node.monerodevs.org:38089 (get_info)
http://xmr-lux.boldsuck.org:38081 (get_info)
http://xmr.jacoblightning3.xyz:38081 (get_info)
Stagenet Tor Nodes (5)
http://plowsoffjexmxalw73tkjmf422gq6575fc7vicuu4javzn2ynnte6tyd.onion:38089 (get_info)
http://plowsofe6cleftfmk2raiw5h2x66atrik3nja4bfd3zrfa2hdlgworad.onion:38089 (get_info)
http://ykqlrp7lumcik3ubzz3nfsahkbplfgqshavmgbxb4fauexqzat6idjad.onion:38089 (get_info)
http://plowsof3t5hogddwabaeiyrno25efmzfxyro2vligremt7sxpsclfaid.onion:38089 (get_info)
http://jl3xmrsz5ythpyk4hg3von3bqhxugh5p2ctz7v7fenqm2ye3q6qhyqqd.onion:38081 (get_info)
Stagenet I2P Nodes (0)
Stagenet CORS Nodes (0)
Testnet Clearnet Nodes (4)
http://testnet.xmr-tw.org:28081 (get_info)
http://node2.monerodevs.org:28089 (get_info)
http://node.monerodevs.org:28089 (get_info)
http://xmr.jacoblightning3.xyz:28081 (get_info)
Testnet Tor Nodes (3)
http://plowsoffjexmxalw73tkjmf422gq6575fc7vicuu4javzn2ynnte6tyd.onion:28089 (get_info)
http://plowsof3t5hogddwabaeiyrno25efmzfxyro2vligremt7sxpsclfaid.onion:28089 (get_info)
http://jl3xmrsz5ythpyk4hg3von3bqhxugh5p2ctz7v7fenqm2ye3q6qhyqqd.onion:28081 (get_info)
Testnet I2P Nodes (0)
Testnet CORS Nodes (0)