0   Sep 81   IANA - Reserved
1   Sep 81   IANA - Reserved
2   Sep 81   IANA - Reserved
3   May 94   General Electric Company
4   Dec 92   Bolt Beranek and Newman Inc.
5   Jul 95   IANA - Reserved
6   Feb 94   Army Information Systems Center
7   Apr 95   IANA - Reserved
8   Dec 92   Bolt Beranek and Newman Inc.
9   Aug 92   IBM
10   Jun 95   IANA - Private Use                  See [RFC1918]
11   May 93   DoD Intel Information Systems
12   Jun 95   AT&T Bell Laboratories
13   Sep 91   Xerox Corporation
14   Jun 91   IANA - Public Data Network
15   Jul 94   Hewlett-Packard Company
16   Nov 94   Digital Equipment Corporation
17   Jul 92   Apple Computer Inc.
18   Jan 94   MIT
19   May 95   Ford Motor Company
20   Oct 94   Computer Sciences Corporation
21   Jul 91   DDN-RVN
22   May 93   Defense Information Systems Agency
23   Jul 95   IANA - Reserved
24   May 01   ARIN - Cable Block                  (Formerly IANA - Jul 95)
25   Jan 95   Royal Signals and Radar Establishment
26   May 95   Defense Information Systems Agency
27   Apr 95   IANA - Reserved
28   Jul 92   DSI-North
29   Jul 91   Defense Information Systems Agency
30   Jul 91   Defense Information Systems Agency
31   Apr 99   IANA - Reserved
32   Jun 94   Norsk Informasjonsteknology
33   Jan 91   DLA Systems Automation Center
34   Mar 93   Halliburton Company
35   Apr 94   MERIT Computer Network
36   Jul 00   IANA - Reserved                     (Formerly Stanford University - Apr 93)
37   Apr 95   IANA - Reserved
38   Sep 94   Performance Systems International
39   Apr 95   IANA - Reserved
40   Jun 94   Eli Lily and Company
41   May 95   IANA - Reserved
42   Jul 95   IANA - Reserved
43   Jan 91   Japan Inet
44   Jul 92   Amateur Radio Digital Communications
45   Jan 95   Interop Show Network
46   Dec 92   Bolt Beranek and Newman Inc.
47   Jan 91   Bell-Northern Research
48   May 95   Prudential Securities Inc.
49   May 94   Joint Technical Command             (Returned to IANA  Mar 98)
50   May 94   Joint Technical Command             (Returned to IANA  Mar 98)
51   Aug 94   Deparment of Social Security of UK
52   Dec 91   E.I. duPont de Nemours and Co., Inc.
53   Oct 93   Cap Debis CCS
54   Mar 92   Merck and Co., Inc.
55   Apr 95   Boeing Computer Services
56   Jun 94   U.S. Postal Service
57   May 95   SITA
58   Sep 81   IANA - Reserved
59   Sep 81   IANA - Reserved
60   Apr 03   APNIC                               (whois.apnic.net)
61   Apr 97   APNIC                               (whois.apnic.net)
62   Apr 97   RIPE NCC                            (whois.ripe.net)
63   Apr 97   ARIN                                (whois.arin.net)
64   Jul 99   ARIN                                (whois.arin.net) 
65   Jul 00   ARIN                                (whois.arin.net)
66   Jul 00   ARIN                                (whois.arin.net)
67   May 01   ARIN                                (whois.arin.net)
68   Jun 01   ARIN                                (whois.arin.net)
69   Aug 02   ARIN                                (whois.arin.net)
70   Sep 81   IANA - Reserved
71   Sep 81   IANA - Reserved
72   Sep 81   IANA - Reserved
73   Sep 81   IANA - Reserved
74   Sep 81   IANA - Reserved
75   Sep 81   IANA - Reserved
76   Sep 81   IANA - Reserved
77   Sep 81   IANA - Reserved
78   Sep 81   IANA - Reserved
79   Sep 81   IANA - Reserved
80   Apr 01   RIPE NCC                            (whois.ripe.net)
81   Apr 01   RIPE NCC                            (whois.ripe.net)
82   Nov 02   RIPE NCC                            (whois.ripe.net)
83   Sep 81   IANA - Reserved
84   Sep 81   IANA - Reserved
85   Sep 81   IANA - Reserved
86   Sep 81   IANA - Reserved
87   Sep 81   IANA - Reserved
88   Sep 81   IANA - Reserved
89   Sep 81   IANA - Reserved
90   Sep 81   IANA - Reserved
91   Sep 81   IANA - Reserved
92   Sep 81   IANA - Reserved
93   Sep 81   IANA - Reserved
94   Sep 81   IANA - Reserved
95   Sep 81   IANA - Reserved
96   Sep 81   IANA - Reserved
97   Sep 81   IANA - Reserved
98   Sep 81   IANA - Reserved
99   Sep 81   IANA - Reserved
100   Sep 81   IANA - Reserved
101   Sep 81   IANA - Reserved
102   Sep 81   IANA - Reserved
103   Sep 81   IANA - Reserved
104   Sep 81   IANA - Reserved
105   Sep 81   IANA - Reserved
106   Sep 81   IANA - Reserved
107   Sep 81   IANA - Reserved
108   Sep 81   IANA - Reserved
109   Sep 81   IANA - Reserved
110   Sep 81   IANA - Reserved
111   Sep 81   IANA - Reserved
112   Sep 81   IANA - Reserved
113   Sep 81   IANA - Reserved
114   Sep 81   IANA - Reserved
115   Sep 81   IANA - Reserved
116   Sep 81   IANA - Reserved
117   Sep 81   IANA - Reserved
118   Sep 81   IANA - Reserved
119   Sep 81   IANA - Reserved
120   Sep 81   IANA - Reserved
121   Sep 81   IANA - Reserved
122   Sep 81   IANA - Reserved
123   Sep 81   IANA - Reserved
124   Sep 81   IANA - Reserved
125   Sep 81   IANA - Reserved
126   Sep 81   IANA - Reserved
127   Sep 81   IANA - Reserved                     See [RFC3330]
128   May 93   Various Registries
129   May 93   Various Registries
130   May 93   Various Registries
131   May 93   Various Registries
132   May 93   Various Registries
133   May 93   Various Registries
134   May 93   Various Registries
135   May 93   Various Registries
136   May 93   Various Registries
137   May 93   Various Registries
138   May 93   Various Registries
139   May 93   Various Registries
140   May 93   Various Registries
141   May 93   Various Registries
142   May 93   Various Registries
143   May 93   Various Registries
144   May 93   Various Registries
145   May 93   Various Registries
146   May 93   Various Registries
147   May 93   Various Registries
148   May 93   Various Registries
149   May 93   Various Registries
150   May 93   Various Registries
151   May 93   Various Registries
152   May 93   Various Registries
153   May 93   Various Registries
154   May 93   Various Registries
155   May 93   Various Registries
156   May 93   Various Registries
157   May 93   Various Registries
158   May 93   Various Registries
159   May 93   Various Registries
160   May 93   Various Registries
161   May 93   Various Registries
162   May 93   Various Registries
163   May 93   Various Registries
164   May 93   Various Registries
165   May 93   Various Registries
166   May 93   Various Registries
167   May 93   Various Registries
168   May 93   Various Registries
169   May 93   Various Registries
170   May 93   Various Registries
171   May 93   Various Registries
172   May 93   Various Registries
173   Apr 03   IANA - Reserved
174   Apr 03   IANA - Reserved
175   Apr 03   IANA - Reserved
176   Apr 03   IANA - Reserved
177   Apr 03   IANA - Reserved
178   Apr 03   IANA - Reserved
179   Apr 03   IANA - Reserved
180   Apr 03   IANA - Reserved
181   Apr 03   IANA - Reserved
182   Apr 03   IANA - Reserved
183   Apr 03   IANA - Reserved
184   Apr 03   IANA - Reserved
185   Apr 03   IANA - Reserved
186   Apr 03   IANA - Reserved
187   Apr 03   IANA - Reserved
188   May 93   Various Registries
189   Apr 03   IANA - Reserved
190   Apr 03   IANA - Reserved
191   May 93   Various Registries
192   May 93   Various Registries
193   May 93   RIPE NCC                            (whois.ripe.net)
194   May 93   RIPE NCC                            (whois.ripe.net)
195   May 93   RIPE NCC                            (whois.ripe.net)
196   May 93   Various Registries
197   May 93   IANA - Reserved
198   May 93   Various Registries
199   May 93   ARIN                                (whois.arin.net)
200   Nov 02   LACNIC                              (whois.lacnic.net)
201   Apr 03   LACNIC                              (whois.lacnic.net)
202   May 93   APNIC                               (whois.apnic.net)
203   May 93   APNIC                               (whois.apnic.net)
204   Mar 94   ARIN                                (whois.arin.net)
205   Mar 94   ARIN                                (whois.arin.net)
206   Apr 95   ARIN                                (whois.arin.net)
207   Nov 95   ARIN                                (whois.arin.net)
208   Apr 96   ARIN                                (whois.arin.net)
209   Jun 96   ARIN                                (whois.arin.net)
210   Jun 96   APNIC                               (whois.apnic.net)
211   Jun 96   APNIC                               (whois.apnic.net)
212   Oct 97   RIPE NCC                            (whois.ripe.net)
213   Mar 99   RIPE NCC                            (whois.ripe.net)
214   Mar 98   US-DOD
215   Mar 98   US-DOD
216   Apr 98   ARIN                                (whois.arin.net)
217   Jun 00   RIPE NCC                            (whois.ripe.net)
218   Dec 00   APNIC                               (whois.apnic.net)
219   Sep 01   APNIC                               (whois.apnic.net)
220   Dec 01   APNIC                               (whois.apnic.net)
221   Jul 02   APNIC                               (whois.apnic.net)
222   Feb 03   APNIC                               (whois.apnic.net)
223   Apr 03   IANA - Reserved                               
224   Sep 81   IANA - Multicast
225   Sep 81   IANA - Multicast
226   Sep 81   IANA - Multicast
227   Sep 81   IANA - Multicast
228   Sep 81   IANA - Multicast
229   Sep 81   IANA - Multicast
230   Sep 81   IANA - Multicast
231   Sep 81   IANA - Multicast
232   Sep 81   IANA - Multicast
233   Sep 81   IANA - Multicast
234   Sep 81   IANA - Multicast
235   Sep 81   IANA - Multicast
236   Sep 81   IANA - Multicast
237   Sep 81   IANA - Multicast
238   Sep 81   IANA - Multicast
239   Sep 81   IANA - Multicast
240   Sep 81   IANA - Reserved
241   Sep 81   IANA - Reserved
242   Sep 81   IANA - Reserved
243   Sep 81   IANA - Reserved
244   Sep 81   IANA - Reserved
245   Sep 81   IANA - Reserved
246   Sep 81   IANA - Reserved
247   Sep 81   IANA - Reserved
248   Sep 81   IANA - Reserved
249   Sep 81   IANA - Reserved
250   Sep 81   IANA - Reserved
251   Sep 81   IANA - Reserved
252   Sep 81   IANA - Reserved
253   Sep 81   IANA - Reserved
254   Sep 81   IANA - Reserved
255   Sep 81   IANA - Reserved