Top 100 Second-Level Domain Names
Jan 2006

 40009501 bbtec.net                       1256234 sympatico.ca
 19441232 ne.jp                           1233932 net.mx
  9947684 rr.com                          1224875 com.mx
  9761938 level3.net                      1200121 attbi.com
  7389882 interbusiness.it                1186153 sprint-hsd.net
  7201674 in-addr.arpa                    1136428 shawcable.net
  5949535 aol.com                         1134648 tele.dk
  5792892 pacbell.net                     1117265 telus.net
  5584450 myvzw.com                       1095174 dsl.net
  5470075 comcast.net                     1091564 net.il
  5295470 verizon.net                     1075322 as9105.com
  5153297 cox.net                         1066294 uni2.es
  5037199 uu.net                           952578 covad.net
  4747523 qwest.net                        915205 bredbandsbolaget.se
  4547627 bellsouth.net                    915108 com.tw
  4387321 rima-tde.net                     911220 wanadoo.nl
  4269783 hinet.net                        910347 net24.it
  4227510 t-ipconnect.de                   909157 army.mil
  4225788 ntl.com                          888602 att.net
  4135403 co.uk                            860378 hp.com
  3672578 wanadoo.fr                       836439 ac.jp
  3415152 swbell.net                       830394 netvigator.com
  3256788 t-dialin.net                     817830 net.in
  3245856 charter.com                      810924 genuity2.net
  3018395 nortelnetworks.com               789922 gaoland.net
  3009351 net.au                           789204 algx.net
  2906137 ameritech.net                    788450 telenet.be
  2676632 adelphia.net                     782221 pppool.de
  2666365 optonline.net                    756325 telepac.pt
  2651404 net.br                           733044 com.ar
  2390849 com.au                           694414 com.hk
  2373413 net.tw                           677802 sbcglobal.net
  2341797 proxad.net                       676170 skynet.be
  2214426 com.br                           673727 alltel.net
  2173472 tpnet.pl                         667126 mchsi.com
  2082089 or.jp                            666050 prserv.net
  2043135 btcentralplus.com                660508 com.sg
  1935725 spcsdns.net                      656696 chello.no
  1858220 arcor-ip.net                     655422 ctinets.com
  1652738 telia.com                        650729 libero.it
  1639425 btopenworld.com                  637805 cnc.net
  1612013 ntli.net                         637802 frontiernet.net
  1554627 ad.jp                            637663 net.tr
  1497361 xo.net                           634861 net.ar
  1457188 dsl-verizon.net                  623667 chello.nl
  1381820 auna.net                         614989 club-internet.fr
  1343671 ac.uk                            610413 bluewin.ch
  1331494 rogers.com                       594454 edu.tw
  1319413 dialsprint.net                   588238 tiscali.it
  1273230 mindspring.com                   586700 co.nz