Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!wuarchive!psuvax1!psuvm!cunyvm!uupsi!sunic!ugle.unit.no!nuug!ifi!anders From: anders@ifi.uio.no (Anders Ellefsrud) Newsgroups: comp.protocols.time.ntp Subject: Re: How widely deployed is NTP? Message-ID: Date: 8 Mar 91 19:08:08 GMT References: <9103071709.aa15122@huey.udel.edu> <9103072309.AA19633@hpsdlz.sdd.hp.com> Sender: anders@ifi.uio.no (Anders Ellefsrud) Organization: University of Oslo, Norway Lines: 28 Nntp-Posting-Host: mago.ifi.uio.no In-Reply-To: ken@HPSDLZ.SDD.HP.COM's message of 7 Mar 91 23:09:46 GMT Originator: anders@mago In article <9103072309.AA19633@hpsdlz.sdd.hp.com>, ken@HPSDLZ.SDD.HP.COM (Ken Stone) writes: > I've been running a sort of "glorious experiment" within net 15 (HP) > to try and determine how widespread the use of NTP really is. This inspired me for a little experiment (Norway is still small enough). I dug out all A-records from the no domain (Norway). All this hosts, a total of 5912 addresses, was sent an ntp packet. This included a bunch of routers, PC's, mac's, terminal-servers and other random equipment which I would not expect to respond to ntp packets anyway. I ran the test just once, so hosts beeing down or othervise unable to respond at the moment they where probed could skew the numbers slightly. Things with more than one ip-address was tested mulitiple times which also tend to introduce inaccuracies. Here are the numbers. Hosts running ntp: 466 Hosts not running ntp: 5446 Total number of hosts: 5912 This indicates that about 8% of all registered ``things'' with an ip-address in norway was running ntp and responding to ntp requests. -- anders@ifi.uio.no