--- service: i.root-servers.net start-period: '2015-05-23T00:00:00Z' end-period: '2015-05-24T00:00:02Z' metric: i-root-active-rssm-sites sites: amx amz ank ash bah bei bkx bnx chi cmx dbi dex fix gen hkx jak jnb jpp kat khi kul lnx lul mia mix mum nix par phi pix poa prt qtr rox rwx sin sox spb sth tai tll tok ukx ula vux was wel wie yan