Internet growth:
Date Hosts | Date Hosts Networks Domains ----- --------- + ----- --------- -------- --------- 12/69 4 | 07/89 130,000 650 3,900 06/70 9 | 10/89 159,000 837 10/70 11 | 10/90 313,000 2,063 9,300 12/70 13 | 01/91 376,000 2,338 04/71 23 | 07/91 535,000 3,086 16,000 10/72 31 | 10/91 617,000 3,556 18,000 01/73 35 | 01/92 727,000 4,526 06/74 62 | 04/92 890,000 5,291 20,000 03/77 111 | 07/92 992,000 6,569 16,300 12/79 188 | 10/92 1,136,000 7,505 18,100 08/81 213 | 01/93 1,313,000 8,258 21,000 05/82 235 | 04/93 1,486,000 9,722 22,000 08/83 562 | 07/93 1,776,000 13,767 26,000 10/84 1,024 | 10/93 2,056,000 16,533 28,000 10/85 1,961 | 01/94 2,217,000 20,539 30,000 02/86 2,308 | 07/94 3,212,000 25,210 46,000 11/86 5,089 | 10/94 3,864,000 37,022 56,000 12/87 28,174 | 01/95 4,852,000 39,410 71,000 07/88 33,000 | 07/95 6,642,000 61,538 120,000 10/88 56,000 | 01/96 9,472,000 93,671 240,000 01/89 80,000 | 07/96 12,881,000 134,365 488,000 | 01/97 16,146,000 828,000 | 07/97 19,540,000 1,301,000 *** see Note below *** Hosts = a computer system with registered ip address (an A record) Networks = registered class A/B/C addresses Domains = registered domain name (with name server record) Note: A more accurate survey mechanism was developed in 1/98; new and some corrected numbers are shown below. Date Hosts | Date Hosts | Date Hosts ----- ----------- + ----- ----------- + ----- ----------- 01/95 5,846,000 | 07/98 36,739,000 | 01/02 147,344,72 07/95 8,200,000 | 01/99 43,230,000 | 07/02 162,128,493 01/96 14,352,000 | 07/99 56,218,000 | 01/03 171,638,297 07/96 16,729,000 | 01/00 72,398,092 | 01/04 233,101,481 01/97 21,819,000 | 07/00 93,047,785 | 07/04 285,139,107 07/97 26,053,000 | 01/01 109,574,429 | 01/98 29,670,000 | 07/01 125,888,197 |
Worldwide Networks Growth: (I)nternet (B)ITNET (U)UCP (F)IDONET (O)SI
____# Countries____ ____# Countries____ Date I B U F O Date I B U F O ----- --- --- --- --- --- ----- --- --- --- --- --- 09/91 31 47 79 49 02/94 62 51 125 88 31 12/91 33 46 78 53 07/94 75 52 129 89 31 02/92 38 46 92 63 11/94 81 51 133 95 -- 04/92 40 47 90 66 25 02/95 86 48 141 98 -- 08/92 49 46 89 67 26 06/95 96 47 144 99 -- 01/93 50 50 101 72 31 06/96 134 -- 146 108 -- 04/93 56 51 107 79 31 07/97 171 -- 147 108 -- 08/93 59 51 117 84 31
WWW Growth:
12/90 1 | 07/98 2,594,622 | 10/01 33,135,768 12/91 10 | 08/98 2,807,588 | 11/01 36,458,394 12/92 50 | 09/98 3,156,324 | 12/01 36,276,252 06/93 130 | 10/98 3,358,969 | 01/02 36,689,008 09/93 204 | 11/98 3,518,158 | 02/02 38,444,856 10/93 228 | 12/98 3,689,227 | 03/02 38,118,962 12/93 623 | 01/99 4,062,280 | 04/02 37,585,233 06/94 2,738 | 02/99 4,301,512 | 05/02 37,574,105 12/94 10,022 | 03/99 4,349,131 | 06/02 38,807,788 06/95 23,500 | 04/99 5,040,663 | 07/02 37,235,470 01/96 100,000 | 05/99 5,414,325 | 08/02 35,991,815 03/96 135,396 | 06/99 6,177,453 | 09/02 35,756,436 04/96 150,295 | 07/99 6,598,697 | 10/02 35,114,328 05/96 193,150 | 08/99 7,078,194 | 11/02 35,686,907 06/96 252,000 | 09/99 7,370,929 | 12/02 35,543,105 07/96 299,403 | 10/99 8,115,828 | 01/03 35,424,956 08/96 342,081 | 11/99 8,844,573 | 02/03 35,863,952 09/96 397,281 | 12/99 9,560,866 | 03/03 39,174,349 10/96 462,047 | 01/00 9,950,491 | 04/03 40,100,739 11/96 525,906 | 02/00 11,161,811 | 05/03 40,444,778 12/96 603,367 | 03/00 13,106,190 | 06/03 40,936,076 01/97 646,162 | 04/00 14,322,950 | 07/03 42,298,371 02/97 739,688 | 05/00 15,049,382 | 08/03 42,807,275 03/97 883,149 | 06/00 17,119,262 | 09/03 43,144,374 04/97 1,002,612 | 07/00 18,169,498 | 10/03 43,700,759 05/97 1,044,163 | 08/00 19,823,296 | 11/03 44,946,965 06/97 1,117,259 | 09/00 21,166,912 | 12/03 45,980,112 07/97 1,203,096 | 10/00 22,282,727 | 01/04 46,067,743 08/97 1,269,800 | 11/00 23,777,446 | 02/04 47,173,415 09/97 1,364,714 | 12/00 25,675,581 | 03/04 48,038,131 10/97 1,466,906 | 01/01 27,585,719 | 04/04 49,750,568 11/97 1,553,998 | 02/01 28,125,284 | 05/04 50,550,965 12/97 1,681,868 | 03/01 28,611,177 | 06/04 51,635,284 01/98 1,834,710 | 04/01 28,669,939 | 07/04 52,131,889 02/98 1,920,933 | 05/01 29,031,745 | 08/04 53,341,867 03/98 2,084,473 | 06/01 29,302,656 | 09/04 54,407,216 04/98 2,215,195 | 07/01 31,299,592 | 10/04 55,388,466 05/98 2,308,502 | 08/01 30,775,624 | 11/04 56,115,015 06/98 2,410,067 | 09/01 32,398,046 | 12/04 56,923,737 Sites = # of web servers (one host may have multiple sites by using different domains or port numbers)
USENET Growth:
Date Sites ~MB ~Posts Groups | Date Sites ~MB ~Posts Groups ---- ----- --- ------ ------ + ---- ------- --- ------ ------ 1979 3 2 3 | 1987 5,200 2 957 259 1980 15 10 | 1988 7,800 4 1933 381 1981 150 0.05 20 | 1990 33,000 10 4,500 1,300 1982 400 35 | 1991 40,000 25 10,000 1,851 1983 600 120 | 1992 63,000 42 17,556 4,302 1984 900 225 | 1993 110,000 70 32,325 8,279 1985 1,300 1.0 375 | 1994 180,000 157 72,755 10,696 1986 2,200 2.0 946 241 | 1995 330,000 586 131,614 ~ approximate: MB - megabytes per day, Posts - articles per day
Security (CERT/US-CERT) Stats:
Date Incidents Advisories Vulnerabilities Tech Alerts ---- --------- ---------- --------------- ----------- 1988 6 1 1989 132 7 1990 252 12 1991 406 23 1992 773 21 1993 1,334 19 1994 2,340 15 1995 2,412 18 171 1996 2,573 27 345 1997 2,134 28 311 1998 3,734 13 262 1999 9,859 17 417 2000 21,756 22 774 2001 52,658 37 2,437 2002 82,094 37 4,129 2003 137,529 28 3,784 2004/1-3Q 2,683 22