I found this in my email today. Interesting to know the 100 oldest domains

1. symbolics.com: March 15, 1985
2. bbn.com: April 24, 1985
3. think.com: May 24, 1985
4. mcc.com: July 11, 1985
5. dec.com: Sept. 30, 1985
6. northrop.com: Nov. 7, 1985
7. xerox.com: Jan. 9, 1986
8. sri.com: Jan. 17, 1986
9. hp.com: March 3, 1986
10. bellcore.com: March 5, 1986
11. ibm.com: March 19, 1986
12. sun.com: March 19, 1986
13. intel.com: March 25, 1986
14. ti.com: March 25, 1986
15. att.com: April 25, 1986
16. gmr.com: May 8, 1986
17. tek.com: May 8, 1986
18. fmc.com: July 10, 1986
19. ub.com: July 10, 1986
20. bell-atl.com: Aug. 5, 1986
21. ge.com: Aug. 5, 1986
22. grebyn.com: Aug. 5, 1986
23. isc.com: Aug. 5, 1986
24. nsc.com: Aug. 5, 1986
25. stargate.com: Aug. 5, 1986
26. boeing.com: Sept. 2, 1986
27. itcorp.com: Sept. 18, 1986
28. siemens.com: Sept. 29, 1986
29. pyramid.com: Oct. 18, 1986
30. alphacdc.com: Oct. 27, 1986
31. bdm.com: Oct. 27, 1986
32. fluke.com: Oct. 27, 1986
33. inmet.com: Oct. 27, 1986
34. kesmai.com: Oct. 27, 1986
35. mentor.com: Oct. 27, 1986
36. nec.com: Oct. 27, 1986
37. ray.com: Oct. 27, 1986
38. rosemount.com: Oct. 27, 1986
39. vortex.com: Oct. 27, 1986
40. alcoa.com: Nov. 5, 1986
41. gte.com: Nov. 5, 1986
42. adobe.com: Nov. 17, 1986
43. amd.com: Nov. 17, 1986
44. das.com: Nov. 17, 1986
45. data-io.com: Nov. 17, 1986
46. octopus.com: Nov. 17, 1986
47. portal.com: Nov. 17, 1986
48. teltone.com: Nov. 17, 1986
49. 3com.com: Dec. 11, 1986
50. amdahl.com: Dec. 11, 1986
51. ccur.com: Dec. 11, 1986
52. ci.com: Dec. 11, 1986
53. convergent.com: Dec. 11, 1986
54. dg.com: Dec. 11, 1986
55. peregrine.com: Dec. 11, 1986
56. quad.com: Dec. 11, 1986
57. sq.com: Dec. 11, 1986
58. tandy.com: Dec. 11, 1986
59. tti.com: Dec. 11, 1986
60. unisys.com: Dec. 11, 1986
61. cgi.com: Jan. 19, 1987
62. cts.com: Jan. 19, 1987
63. spdcc.com: Jan. 19, 1987
64. apple.com: Feb. 19, 1987
65. nma.com: March 4, 1987
66. prime.com: March 4, 1987
67. philips.com: April 4, 1987
68. datacube.com: April 23, 1987
69. kai.com: April 23, 1987
70. tic.com: April 23, 1987
71. vine.com: April 23, 1987
72. ncr.com: April 30, 1987
73. cisco.com: May 14, 1987
74. rdl.com: May 14, 1987
75. slb.com: May 20, 1987
76. parcplace.com: May 27, 1987
77. utc.com: May 27, 1987
78. ide.com: June 26, 1987
79. trw.com: July 9, 1987
80. unipress.com: July 13, 1987
81. dupont.com: July 27, 1987
82. lockheed.com: July 27, 1987
83. rosetta.com: July 28, 1987
84. toad.com: Aug. 18, 1987
85. quick.com: Aug. 31, 1987
86. allied.com: Sept. 3, 1987
87. dsc.com: Sept. 3, 1987
88. sco.com: Sept. 3, 1987
89. gene.com: Sept. 22, 1987
90. kccs.com: Sept. 22, 1987
91. spectra.com: Sept. 22, 1987
92. wlk.com: Sept. 22, 1987
93. mentat.com: Sept. 30, 1987
94. wyse.com: Oct. 14, 1987
95. cfg.com: Nov. 2, 1987
96. marble.com: Nov. 9, 1987
97. cayman.com: Nov. 16, 1987
98. entity.com: Nov. 16, 1987
99. ksr.com: Nov. 24, 1987
100. nynexst.com: Nov. 30, 1987

I reg my first domain in 1995 and cost me $35/year