% sh search_level3.sh 
** Searching bar1.Boston1.Level3.net **
found xe-4-0-0.bar1.Boston1.Level3.net >>  CLEARWIRE-C.bar1.Boston1.Level3.net. (4.53.54.10)
found xe-4-1-0.bar1.Boston1.Level3.net >>  MASSACHUSET.bar1.Boston1.Level3.net. (4.53.48.98)
found xe-4-2-0.bar1.Boston1.Level3.net >>  T-MOBILE-US.bar1.Boston1.Level3.net. (Exception: Lag Group?)
found xe-4-3-0.bar1.Boston1.Level3.net >>  OSHEAN-INC.bar1.Boston1.Level3.net. (4.53.54.22)
found xe-4-3-1.bar1.Boston1.Level3.net >>  CARBONITE-I.bar1.Boston1.Level3.net. (4.15.65.54)
found xe-4-3-3.bar1.Boston1.Level3.net >>  ACCESSPLUS.bar1.Boston1.Level3.net. (4.16.9.6)
found xe-5-0-0.bar1.Boston1.Level3.net >>  MILLENNIAL.bar1.Boston1.Level3.net. (4.31.157.114)
found xe-5-0-1.bar1.Boston1.Level3.net >>  TOWARDEX-TE.bar1.Boston1.Level3.net. (4.31.159.166)
found xe-5-0-3.bar1.Boston1.Level3.net >>  PRESIDENT-A.bar1.Boston1.Level3.net. (4.31.157.126)
found xe-5-2-3.bar1.Boston1.Level3.net >>  DSCI-CORPOR.bar1.Boston1.Level3.net. (4.31.158.250)
found xe-5-3-2.bar1.Boston1.Level3.net >>  NETFLIX-INC.bar1.Boston1.Level3.net. (4.31.158.254)
found xe-8-2-0.bar1.Boston1.Level3.net >>  DARTMOUTH-C.bar1.Boston1.Level3.net. (4.53.54.50)
found xe-8-2-1.bar1.Boston1.Level3.net >>  FIBERTECH-N.bar1.Boston1.Level3.net. (4.31.157.90)
found xe-8-3-0.bar1.Boston1.Level3.net >>  CARBONITE-I.bar1.Boston1.Level3.net. (4.53.54.34)
found xe-8-3-1.bar1.Boston1.Level3.net >>  ONE-SOURCE.bar1.Boston1.Level3.net. (4.53.55.110)
found xe-9-0-0.bar1.Boston1.Level3.net >>  CARBONITE-I.bar1.Boston1.Level3.net. (4.53.54.26)
found xe-10-0-0.bar1.Boston1.Level3.net >>  AETNA-INC.bar1.Boston1.Level3.net. (4.31.154.66)
found xe-10-2-0.bar1.Boston1.Level3.net >>  CONSTANT-CO.bar1.Boston1.Level3.net. (4.53.54.2)
found xe-11-3-0.bar1.Boston1.Level3.net >>  NAVISITE-IN.bar1.Boston1.Level3.net. (4.53.54.14)
** Searching bar2.Boston1.Level3.net **
found xe-4-0-1.bar2.Boston1.Level3.net >>  NORTHEASTER.bar2.Boston1.Level3.net. (4.53.56.2)
found xe-4-0-2.bar2.Boston1.Level3.net >>  SIDERA-NETW.bar2.Boston1.Level3.net. (4.53.56.154)
found xe-4-1-0.bar2.Boston1.Level3.net >>  GREEN-MOUNT.bar2.Boston1.Level3.net. (4.53.56.34)
found xe-4-1-2.bar2.Boston1.Level3.net >>  ! Error:NXDOMAIN (4.53.56.194)
found xe-4-1-3.bar2.Boston1.Level3.net >>  NUANCE-COMM.bar2.Boston1.Level3.net. (4.31.155.170)
found xe-4-2-0.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.53.56.130)
found xe-4-2-1.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.53.56.62)
found xe-4-2-2.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.53.56.58)
found xe-4-2-3.bar2.Boston1.Level3.net >>  ! Error:SERVFAIL (4.54.56.54)
found xe-4-3-0.bar2.Boston1.Level3.net >>  EDS-RESELLE.bar2.Boston1.Level3.net. (4.53.56.138)
found xe-4-3-1.bar2.Boston1.Level3.net >>  TRIP-ADVISO.bar2.Boston1.Level3.net. (4.53.56.50)
found xe-4-3-2.bar2.Boston1.Level3.net >>  CRC-COMMUNI.bar2.Boston1.Level3.net. (4.53.56.46)
found xe-4-3-3.bar2.Boston1.Level3.net >>  JUMPTAP-INC.bar2.Boston1.Level3.net. (4.53.56.30)
found xe-5-0-2.bar2.Boston1.Level3.net >>  RCN-CORPORA.bar2.Boston1.Level3.net. (4.53.56.166)
found xe-5-0-3.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.53.56.170)
found xe-5-1-1.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.15.70.14)
found xe-5-1-2.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.15.70.18)
found xe-5-2-2.bar2.Boston1.Level3.net >>  SIDERA-NETW.bar2.Boston1.Level3.net. (4.53.56.182)
found xe-5-2-3.bar2.Boston1.Level3.net >>  CIGNA.bar2.Boston1.Level3.net. (Exception: more than 1 record)   
found xe-5-3-0.bar2.Boston1.Level3.net >>  ! Error:NXDOMAIN (4.25.70.2)
found xe-5-3-1.bar2.Boston1.Level3.net >>  NETFLIX-INC.bar2.Boston1.Level3.net. (4.53.56.174)
found xe-5-3-2.bar2.Boston1.Level3.net >>  ENDURANCE-I.bar2.Boston1.Level3.net. (4.53.56.190)
found xe-5-3-3.bar2.Boston1.Level3.net >>  MILLENNIAL.bar2.Boston1.Level3.net. (4.53.56.178)
found xe-8-0-2.bar2.Boston1.Level3.net >>  Comcast-Level3-10G.boston1.Level3.net. (4.68.127.190)
found xe-8-1-2.bar2.Boston1.Level3.net >>  Comcast-Level3-10G.boston1.Level3.net. (4.68.127.198)
found xe-8-2-0.bar2.Boston1.Level3.net >>  VERIZON-WIR.bar2.Boston1.Level3.net. (4.53.56.26)
found xe-8-3-1.bar2.Boston1.Level3.net >>  BT-CONFEREN.bar2.Boston1.Level3.net. (4.53.56.14)
found xe-10-0-0.bar2.Boston1.Level3.net >>  STOWE-ACCES.bar2.Boston1.Level3.net. (4.15.70.10)
found xe-10-1-0.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.53.56.186)
found xe-10-2-0.bar2.Boston1.Level3.net >>  ! Error:NXDOMAIN (4.63.66.6)
found xe-10-3-0.bar2.Boston1.Level3.net >>  RCN-CORPORA.bar2.Boston1.Level3.net. (4.53.50.14)
found xe-11-0-0.bar2.Boston1.Level3.net >>  BRAGG-COMMU.bar2.Boston1.Level3.net. (4.79.2.90)
found xe-11-2-0.bar2.Boston1.Level3.net >>  PRESIDENT-A.bar2.Boston1.Level3.net. (4.53.56.10)
found xe-11-2-3.bar2.Boston1.Level3.net >>  CHARTER-COM.bar2.Boston1.Level3.net. (4.15.70.22)