OK, but, <50% show as port open .... maybe a bug in the seed? 05:16:52 scott:~$ nmap -p 8333 `dig +short dnsseed.bluematt.me` Starting Nmap 5.00 ( http://nmap.org ) at 2011-08-03 14:17 CEST Interesting ports on 83.220.45.22: PORT STATE SERVICE 8333/tcp open unknown Interesting ports on c-6de0e055.27-2-64736c11.cust.bredbandsbolaget.se(85.224.224.109): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on mackila.com (88.168.105.251): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on 93-81-112-85.broadband.corbina.ru (93.81.112.85): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on kons-5f710a2a.pool.mediaWays.net (95.113.10.42): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on 173-218-216-132.atw.suddenlink.net (173.218.216.132): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on dynamicip-188-232-23-24.pppoe.omsk.ertelecom.ru(188.232.23.24): PORT STATE SERVICE 8333/tcp open unknown Interesting ports on c-71-229-116-166.hsd1.fl.comcast.net (71.229.116.166): PORT STATE SERVICE 8333/tcp filtered unknown Interesting ports on c-76-25-209-23.hsd1.co.comcast.net (76.25.209.23): PORT STATE SERVICE 8333/tcp open unknown Nmap done: 20 IP addresses (9 hosts up) scanned in 3.50 seconds