The domain name .com is a generic top-level domain (gTLD) in the Domain Name System of the Internet. .COM is one of the first set of gTLD. It was first implemented for use on the Internet in January 1985. The internet celebrates a landmark event on the 15 March – the 25th birthday of the day the first dotcom name was registered. The following are the 100 oldest still-existing registered .com domains:

1.  15-Mar-1985  SYMBOLICS.COM2.  24-Apr-1985  BBN.COM3.  24-May-1985  THINK.COM4.  11-Jul-1985  MCC.COM5.  30-Sep-1985  DEC.COM6.  07-Nov-1985  NORTHROP.COM7.  09-Jan-1986  XEROX.COM8.  17-Jan-1986  SRI.COM9.  03-Mar-1986  HP.COM10.  05-Mar-1986  BELLCORE.COM11.  19-Mar-1986  IBM.COM12.  19-Mar-1986  SUN.COM13.  25-Mar-1986  INTEL.COM14.  25-Mar-1986  TI.COM15.  25-Apr-1986  ATT.COM16.  08-May-1986  GMR.COM17.  08-May-1986  TEK.COM18.  10-Jul-1986  FMC.COM19.  10-Jul-1986  UB.COM20.  05-Aug-1986  BELL-ATL.COM21.  05-Aug-1986  GE.COM22.  05-Aug-1986  GREBYN.COM23.  05-Aug-1986  ISC.COM24.  05-Aug-1986  NSC.COM25.  05-Aug-1986  STARGATE.COM26.  02-Sep-1986  BOEING.COM27.  18-Sep-1986  ITCORP.COM28.  29-Sep-1986  SIEMENS.COM29.  18-Oct-1986  PYRAMID.COM30.  27-Oct-1986  ALPHACDC.COM31.  27-Oct-1986  BDM.COM32.  27-Oct-1986  FLUKE.COM33.  27-Oct-1986  INMET.COM34.  27-Oct-1986  KESMAI.COM35.  27-Oct-1986  MENTOR.COM36.  27-Oct-1986  NEC.COM37.  27-Oct-1986  RAY.COM38.  27-Oct-1986  ROSEMOUNT.COM39.  27-Oct-1986  VORTEX.COM40.  05-Nov-1986  ALCOA.COM41.  05-Nov-1986  GTE.COM42.  17-Nov-1986  ADOBE.COM43.  17-Nov-1986  AMD.COM44.  17-Nov-1986  DAS.COM45.  17-Nov-1986  DATA-IO.COM46.  17-Nov-1986  OCTOPUS.COM47.  17-Nov-1986  PORTAL.COM48.  17-Nov-1986  TELTONE.COM49.  11-Dec-1986  3COM.COM50.  11-Dec-1986  AMDAHL.COM51.  11-Dec-1986  CCUR.COM52.  11-Dec-1986  CI.COM53.  11-Dec-1986  CONVERGENT.COM54.  11-Dec-1986  DG.COM55.  11-Dec-1986  PEREGRINE.COM56.  11-Dec-1986  QUAD.COM57.  11-Dec-1986  SQ.COM58.  11-Dec-1986  TANDY.COM59.  11-Dec-1986  TTI.COM60.  11-Dec-1986  UNISYS.COM61.  19-Jan-1987  CGI.COM62.  19-Jan-1987  CTS.COM63.  19-Jan-1987  SPDCC.COM64.  19-Feb-1987  APPLE.COM65.  04-Mar-1987  NMA.COM66.  04-Mar-1987  PRIME.COM67.  04-Apr-1987  PHILIPS.COM68.  23-Apr-1987  DATACUBE.COM69.  23-Apr-1987  KAI.COM70.  23-Apr-1987  TIC.COM71.  23-Apr-1987  VINE.COM72.  30-Apr-1987  NCR.COM73.  14-May-1987  CISCO.COM74.  14-May-1987  RDL.COM75.  20-May-1987  SLB.COM76.  27-May-1987  PARCPLACE.COM77.  27-May-1987  UTC.COM78.  26-Jun-1987  IDE.COM79.  09-Jul-1987  TRW.COM80.  13-Jul-1987  UNIPRESS.COM81.  27-Jul-1987  DUPONT.COM82.  27-Jul-1987  LOCKHEED.COM83.  28-Jul-1987  ROSETTA.COM84.  18-Aug-1987  TOAD.COM85.  31-Aug-1987  QUICK.COM86.  03-Sep-1987  ALLIED.COM87.  03-Sep-1987  DSC.COM88.  03-Sep-1987  SCO.COM89.  22-Sep-1987  GENE.COM90.  22-Sep-1987  KCCS.COM91.  22-Sep-1987  SPECTRA.COM92.  22-Sep-1987  WLK.COM93.  30-Sep-1987  MENTAT.COM94.  14-Oct-1987  WYSE.COM95.  02-Nov-1987  CFG.COM96.  09-Nov-1987  MARBLE.COM97.  16-Nov-1987  CAYMAN.COM98.  16-Nov-1987  ENTITY.COM99.  24-Nov-1987  KSR.COM100.  30-Nov-1987  NYNEXST.COM

(Source: 100 Oldest Domain as reproduced at dnsknowledge and reported by Lauren Weinstein in his blog )

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