Its been more than a day that public nodes respond with:
for N in {1..100}; do curl --silent "http://node$N.nxtbase.com:7874/nxt?requestType=getState" | python -m json.tool | grep '"lastBlock"'; done
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",
"lastBlock": "2680262203532249785",

Other nodes that accept public request returns, what appears to be a valid lastBlock...
, still returns same lastBlock 2680262203532249785.