国内ntp服务器ip地址如何查mac地址

time-a.nist.gov129.6.15.28NIST,Gaithersburg,Maryland

time-b.nist.gov129.6.15.29NIST,Gaithersburg,Maryland

time-a.timefreq.bldrdoc.gov132.163.4.101NIST,Boulder,Colorado

time-b.timefreq.bldrdoc.gov132.163.4.102NIST,Boulder,Colorado

time-c.timefreq.bldrdoc.gov132.163.4.103NIST,Boulder,Colorado

ist.colorado.edu128.138.140.44UniversityofColorado,Boulder

time.nist.gov192.43.244.18NCAR,Boulder,Colorado

time-nw.nist.gov131.107.1.10Microsoft,Redmond,Washington

207.200.81.113TrueTime,AOLfacility,Sunnyvale,California