casper testnet bootstrap enode

[yuanaichi]

who can tell me a available casper testnet bootstrap enode

I use enode from this article https://hackmd.io/s/Hk6UiFU7z

but my local node always sync failed

INFO:p2p.peermgr connecting bootstrap server uri=b'enode://d3260a710a752b926bb3328ebe29bfb568e4fb3b4c7ff59450738661113fb21f5efbdf42904c706a9f152275890840345a5bc990745919eeb2dfc2c481d778ee@54.167.247.63:30303'
INFO:p2p.peermgr waiting for bootstrap
INFO:eth.sync.task spawning new synctask
WARNING:eth.sync.task syncing hashchain timed out
INFO:eth.sync.task headers sync failed with peers, retry retry=1
WARNING:eth.sync.task syncing hashchain timed out
INFO:eth.sync.task headers sync failed with peers, retry retry=2
WARNING:eth.sync.task no protocols available
WARNING:eth.sync.task syncing failed
WARNING:p2p.discovery.kademlia recv ping from self?!
WARNING:p2p.discovery.kademlia recv ping from self?!
[b'\x05', b'odash/v1.0.0-stable/linux-amd64/go1.8.3', [[b'eth', b'?'], [b'eth', b'>']], b'', b"\xe6\x90\xbf\xc7\x1539\xa9\x10.\x01\xc4\xb2>\xdf\x9d;n\xf9L\x08\xbcP\xe3\xe0\x01\x8cL\x85\x8e\x1bb\x9d\x97\xd1+\xa6\x15\xda\xb2\x16\xb5f'.A\x10u\xc8\xd1\x98'\x98]_>6\xac\x99U3\xa2JX"]
WARNING:p2p.discovery.kademlia recv ping from self?!

I think this enode is unavailable，who know the other available enode