最早的顶级域名是COM、ORG、EDU、GOV、MIL和ccTLD。com域名被注册于1985年3月15日，这个域名是symbolicsCOMSIEMENSCOMMENTORCOMRAYCOMALCOA
DNS 诞生于1984年，1985年国际顶级域名被定义。最早的顶级域名是COM、ORG、EDU、GOV、MIL和ccTLD。
1985年４月，cmu.edu, purdue.edu, rice.edu 和 ucla.edu被注册，它们是世界上最早注册的域名。
第一个.gov域名是css.gov，被注册于1985年6月。
第一个.org域名是mitre.org，被注册于1985年7月。
第一个.com域名被注册于1985年3月15日，这个域名是symbolics.com，这个域名至今可以访问，不过没有什么东西可看。
下面是最早注册的100个.com域名：
SYMBOLICS.COM BBN.COM THINK.COM MCC.COM DEC.COM NORTHROP.COM XEROX.COM SRI.COM HP.COM BELLCORE.COM IBM.COM SUN.COM INTEL.COM TI.COM ATT.COM GMR.COM TEK.COM FMC.COM UB.COM BELL-ATL.COM GE.COM GREBYN.COM ISC.COM NSC.COM STARGATE.COM BOEING.COM ITCORP.COM SIEMENS.COM PYRAMID.COM ALPHACDC.COM BDM.COM FLUKE.COM INMET.COM KESMAI.COM MENTOR.COM NEC.COM RAY.COM ROSEMOUNT.COM VORTEX.COM ALCOA.COM GTE.COM ADOBE.COM AMD.COM DAS.COM DATA-IO.COM OCTOPUS.COM PORTAL.COM TELTONE.COM 3COM.COM AMDAHL.COM CCUR.COM CI.COM CONVERGENT.COM DG.COM PEREGRINE.COM QUAD.COM SQ.COM TANDY.COM TTI.COM UNISYS.COM CGI.COM CTS.COM SPDCC.COM APPLE.COM NMA.COM PRIME.COM PHILIPS.COM DATACUBE.COM KAI.COM TIC.COM VINE.COM NCR.COM CISCO.COM RDL.COM SLB.COM PARCPLACE.COM UTC.COM IDE.COM TRW.COM UNIPRESS.COM DUPONT.COM LOCKHEED.COM ROSETTA.COM TOAD.COM QUICK.COM ALLIED.COM DSC.COM SCO.COM GENE.COM KCCS.COM SPECTRA.COM WLK.COM MENTAT.COM WYSE.COM CFG.COM MARBLE.COM CAYMAN.COM ENTITY.COM KSR.COM NYNEXST.COM March 15 1985 April 24 1985 May 24 1985 July 11 1985 September 30 1985 November 7 1985 January 9 1986 January 17 1986 March 3 1986 March 5 1986 March 19 1986 March 19 1986 March 25 1986 March 25 1986 April 25 1986 May 8 1986 May 8 1986 July 10 1986 July 10 1986 August 5 1986 August 5 1986 August 5 1986 August 5 1986 August 5 1986 August 5 1986 September 2 1986 September 18 1986 September 29 1986 October 18 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 October 27 1986 November 5 1986 November 5 1986 November 17 1986 November 17 1986 November 17 1986 November 17 1986 November 17 1986 November 17 1986 November 17 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 December 11 1986 January 19 1987 January 19 1987 January 19 1987 February 19 1987 March 4 1987 March 4 1987 April 4 1987 April 23 1987 April 23 1987 April 23 1987 April 23 1987 April 30 1987 May 14 1987 May 14 1987 May 20 1987 May 27 1987 May 27 1987 June 26 1987 July 9 1987 July 13 1987 July 27 1987 July 27 1987 July 28 1987 August 18 1987 August 31 1987 September 3 1987 September 3 1987 September 3 1987 September 22 1987 September 22 1987 September 22 1987 September 22 1987 September 30 1987 October 14 1987 November 2 1987 November 9 1987 November 16 1987 November 16 1987 November 24 1987 November 30 1987
