Prefix |
Designation |
Date |
Whois |
Status [1] |
Note |
000/8 |
IANA - Local Identification |
1981-09 |
|
RESERVED |
[2] |
001/8 |
IANA |
|
|
UNALLOCATED |
|
002/8 |
IANA |
|
|
UNALLOCATED |
|
003/8 |
General Electric Company |
1994-05 |
|
LEGACY |
|
004/8 |
Level 3 Communications, Inc. |
1992-12 |
|
LEGACY |
|
005/8 |
IANA |
|
|
UNALLOCATED |
|
006/8 |
Army Information Systems Center |
1994-02 |
|
LEGACY |
|
007/8 |
IANA |
1995-04 |
|
RESERVED |
|
008/8 |
Level 3 Communications, Inc. |
1992-12 |
|
LEGACY |
|
009/8 |
IBM |
1992-08 |
|
LEGACY |
|
010/8 |
IANA - Private Use |
1995-06 |
|
RESERVED |
[3] |
011/8 |
DoD Intel Information Systems |
1993-05 |
|
LEGACY |
|
012/8 |
AT&T Bell Laboratories |
1995-06 |
|
LEGACY |
|
013/8 |
Xerox Corporation |
1991-09 |
|
LEGACY |
|
014/8 |
IANA |
|
|
UNALLOCATED |
[4] |
015/8 |
Hewlett-Packard Company |
1994-07 |
|
LEGACY |
|
016/8 |
Digital Equipment Corporation |
1994-11 |
|
LEGACY |
|
017/8 |
Apple Computer Inc. |
1992-07 |
|
LEGACY |
|
018/8 |
MIT |
1994-01 |
|
LEGACY |
|
019/8 |
Ford Motor Company |
1995-05 |
|
LEGACY |
|
020/8 |
Computer Sciences Corporation |
1994-10 |
|
LEGACY |
|
021/8 |
DDN-RVN |
1991-07 |
|
LEGACY |
|
022/8 |
Defense Information Systems Agency |
1993-05 |
|
LEGACY |
|
023/8 |
IANA |
|
|
UNALLOCATED |
|
024/8 |
ARIN |
2001-05 |
whois.arin.net |
ALLOCATED |
|
025/8 |
UK Ministry of Defence |
1995-01 |
|
LEGACY |
|
026/8 |
Defense Information Systems Agency |
1995-05 |
|
LEGACY |
|
027/8 |
IANA |
|
|
UNALLOCATED |
|
028/8 |
DSI-North |
1992-07 |
|
LEGACY |
|
029/8 |
Defense Information Systems Agency |
1991-07 |
|
LEGACY |
|
030/8 |
Defense Information Systems Agency |
1991-07 |
|
LEGACY |
|
031/8 |
IANA |
|
|
UNALLOCATED |
|
032/8 |
AT&T Global Network Services |
1994-06 |
|
LEGACY |
|
033/8 |
DLA Systems Automation Center |
1991-01 |
|
LEGACY |
|
034/8 |
Halliburton Company |
1993-03 |
|
LEGACY |
|
035/8 |
MERIT Computer Network |
1994-04 |
|
LEGACY |
|
036/8 |
IANA |
|
|
UNALLOCATED |
|
037/8 |
IANA |
|
|
UNALLOCATED |
|
038/8 |
Performance Systems International |
1994-09 |
|
LEGACY |
|
039/8 |
IANA |
|
|
UNALLOCATED |
|
040/8 |
Eli Lily & Company |
1994-06 |
|
LEGACY |
|
041/8 |
AfriNIC |
2005-04 |
whois.afrinic.net |
ALLOCATED |
|
042/8 |
IANA |
|
|
UNALLOCATED |
|
043/8 |
Japan Inet |
1991-01 |
|
LEGACY |
|
044/8 |
Amateur Radio Digital Communications |
1992-07 |
|
LEGACY |
|
045/8 |
Interop Show Network |
1995-01 |
|
LEGACY |
|
046/8 |
IANA |
|
|
UNALLOCATED |
|
047/8 |
Bell-Northern Research |
1991-01 |
|
LEGACY |
|
048/8 |
Prudential Securities Inc. |
1995-05 |
|
LEGACY |
|
049/8 |
IANA |
|
|
UNALLOCATED |
|
050/8 |
IANA |
|
|
UNALLOCATED |
|
051/8 |
Deparment of Social Security of UK |
1994-08 |
|
LEGACY |
|
052/8 |
E.I. duPont de Nemours and Co., Inc. |
1991-12 |
|
LEGACY |
|
053/8 |
Cap Debis CCS |
1993-10 |
|
LEGACY |
|
054/8 |
Merck and Co., Inc. |
1992-03 |
|
LEGACY |
|
055/8 |
DoD Network Information Center |
1995-04 |
|
LEGACY |
|
056/8 |
US Postal Service |
1994-06 |
|
LEGACY |
|
057/8 |
SITA |
1995-05 |
|
LEGACY |
|
058/8 |
APNIC |
2004-04 |
whois.apnic.net |
ALLOCATED |
|
059/8 |
APNIC |
2004-04 |
whois.apnic.net |
ALLOCATED |
|
060/8 |
APNIC |
2003-04 |
whois.apnic.net |
ALLOCATED |
|
061/8 |
APNIC |
1997-04 |
whois.apnic.net |
ALLOCATED |
|
062/8 |
RIPE NCC |
1997-04 |
whois.ripe.net |
ALLOCATED |
|
063/8 |
ARIN |
1997-04 |
whois.arin.net |
ALLOCATED |
|
064/8 |
ARIN |
1999-07 |
whois.arin.net |
ALLOCATED |
|
065/8 |
ARIN |
2000-07 |
whois.arin.net |
ALLOCATED |
|
066/8 |
ARIN |
2000-07 |
whois.arin.net |
ALLOCATED |
|
067/8 |
ARIN |
2001-05 |
whois.arin.net |
ALLOCATED |
|
068/8 |
ARIN |
2001-06 |
whois.arin.net |
ALLOCATED |
|
069/8 |
ARIN |
2002-08 |
whois.arin.net |
ALLOCATED |
|
070/8 |
ARIN |
2004-01 |
whois.arin.net |
ALLOCATED |
|
071/8 |
ARIN |
2004-08 |
whois.arin.net |
ALLOCATED |
|
072/8 |
ARIN |
2004-08 |
whois.arin.net |
ALLOCATED |
|
073/8 |
ARIN |
2005-03 |
whois.arin.net |
ALLOCATED |
|
074/8 |
ARIN |
2005-06 |
whois.arin.net |
ALLOCATED |
|
075/8 |
ARIN |
2005-06 |
whois.arin.net |
ALLOCATED |
|
076/8 |
ARIN |
2005-06 |
whois.arin.net |
ALLOCATED |
|
077/8 |
RIPE NCC |
2006-08 |
whois.ripe.net |
ALLOCATED |
|
078/8 |
RIPE NCC |
2006-08 |
whois.ripe.net |
ALLOCATED |
|
079/8 |
RIPE NCC |
2006-08 |
whois.ripe.net |
ALLOCATED |
|
080/8 |
RIPE NCC |
2001-04 |
whois.ripe.net |
ALLOCATED |
|
081/8 |
RIPE NCC |
2001-04 |
whois.ripe.net |
ALLOCATED |
|
082/8 |
RIPE NCC |
2002-11 |
whois.ripe.net |
ALLOCATED |
|
083/8 |
RIPE NCC |
2003-11 |
whois.ripe.net |
ALLOCATED |
|
084/8 |
RIPE NCC |
2003-11 |
whois.ripe.net |
ALLOCATED |
|
085/8 |
RIPE NCC |
2004-04 |
whois.ripe.net |
ALLOCATED |
|
086/8 |
RIPE NCC |
2004-04 |
whois.ripe.net |
ALLOCATED |
|
087/8 |
RIPE NCC |
2004-04 |
whois.ripe.net |
ALLOCATED |
|
088/8 |
RIPE NCC |
2004-04 |
whois.ripe.net |
ALLOCATED |
|
089/8 |
RIPE NCC |
2005-06 |
whois.ripe.net |
ALLOCATED |
|
090/8 |
RIPE NCC |
2005-06 |
whois.ripe.net |
ALLOCATED |
|
091/8 |
RIPE NCC |
2005-06 |
whois.ripe.net |
ALLOCATED |
|
092/8 |
RIPE NCC |
2007-03 |
whois.ripe.net |
ALLOCATED |
|
093/8 |
RIPE NCC |
2007-03 |
whois.ripe.net |
ALLOCATED |
|
094/8 |
RIPE NCC |
2007-07 |
whois.ripe.net |
ALLOCATED |
|
095/8 |
RIPE NCC |
2007-07 |
whois.ripe.net |
ALLOCATED |
|
096/8 |
ARIN |
2006-10 |
whois.arin.net |
ALLOCATED |
|
097/8 |
ARIN |
2006-10 |
whois.arin.net |
ALLOCATED |
|
098/8 |
ARIN |
2006-10 |
whois.arin.net |
ALLOCATED |
|
099/8 |
ARIN |
2006-10 |
whois.arin.net |
ALLOCATED |
|
100/8 |
IANA |
|
|
UNALLOCATED |
|
101/8 |
IANA |
|
|
UNALLOCATED |
|
102/8 |
IANA |
|
|
UNALLOCATED |
|
103/8 |
IANA |
|
|
UNALLOCATED |
|
104/8 |
IANA |
|
|
UNALLOCATED |
|
105/8 |
IANA |
|
|
UNALLOCATED |
|
106/8 |
IANA |
|
|
UNALLOCATED |
|
107/8 |
IANA |
|
|
UNALLOCATED |
|
108/8 |
IANA |
|
|
UNALLOCATED |
|
109/8 |
IANA |
|
|
UNALLOCATED |
|
110/8 |
IANA |
|
|
UNALLOCATED |
|
111/8 |
IANA |
|
|
UNALLOCATED |
|
112/8 |
APNIC |
2008-05 |
whois.apnic.net |
ALLOCATED |
|
113/8 |
APNIC |
2008-05 |
whois.apnic.net |
ALLOCATED |
|
114/8 |
APNIC |
2007-10 |
whois.apnic.net |
ALLOCATED |
|
115/8 |
APNIC |
2007-10 |
whois.apnic.net |
ALLOCATED |
|
116/8 |
APNIC |
2007-01 |
whois.apnic.net |
ALLOCATED |
|
117/8 |
APNIC |
2007-01 |
whois.apnic.net |
ALLOCATED |
|
118/8 |
APNIC |
2007-01 |
whois.apnic.net |
ALLOCATED |
|
119/8 |
APNIC |
2007-01 |
whois.apnic.net |
ALLOCATED |
|
120/8 |
APNIC |
2007-01 |
whois.apnic.net |
ALLOCATED |
|
121/8 |
APNIC |
2006-01 |
whois.apnic.net |
ALLOCATED |
|
122/8 |
APNIC |
2006-01 |
whois.apnic.net |
ALLOCATED |
|
123/8 |
APNIC |
2006-01 |
whois.apnic.net |
ALLOCATED |
|
124/8 |
APNIC |
2005-01 |
whois.apnic.net |
ALLOCATED |
|
125/8 |
APNIC |
2005-01 |
whois.apnic.net |
ALLOCATED |
|
126/8 |
APNIC |
2005-01 |
whois.apnic.net |
ALLOCATED |
|
127/8 |
IANA - Loopback |
1981-09 |
|
RESERVED |
[5] |
128/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
129/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
130/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
131/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
132/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
133/8 |
Administered by APNIC |
1997-03 |
whois.apnic.net |
LEGACY |
|
134/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
135/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
136/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
137/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
138/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
139/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
140/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
141/8 |
Administered by RIPE NCC |
1993-05 |
whois.ripe.net |
LEGACY |
|
142/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
143/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
144/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
145/8 |
Administered by RIPE NCC |
1993-05 |
whois.ripe.net |
LEGACY |
|
146/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
147/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
148/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
149/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
150/8 |
Administered by APNIC |
1993-05 |
whois.apnic.net |
LEGACY |
|
151/8 |
Administered by RIPE NCC |
1993-05 |
whois.ripe.net |
LEGACY |
|
152/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
153/8 |
Administered by APNIC |
1993-05 |
whois.apnic.net |
LEGACY |
|
154/8 |
Administered by AfriNIC |
1993-05 |
whois.afrinic.net |
LEGACY |
|
155/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
156/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
157/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
158/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
159/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
160/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
161/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
162/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
163/8 |
Administered by APNIC |
1993-05 |
whois.apnic.net |
LEGACY |
|
164/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
165/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
166/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
167/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
168/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
169/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
[6] |
170/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
|
171/8 |
Administered by APNIC |
1993-05 |
whois.apnic.net |
LEGACY |
|
172/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
[7] |
173/8 |
ARIN |
2008-02 |
whois.arin.net |
ALLOCATED |
|
174/8 |
ARIN |
2008-02 |
whois.arin.net |
ALLOCATED |
|
175/8 |
IANA |
|
|
UNALLOCATED |
|
176/8 |
IANA |
|
|
UNALLOCATED |
|
177/8 |
IANA |
|
|
UNALLOCATED |
|
178/8 |
IANA |
|
|
UNALLOCATED |
|
179/8 |
IANA |
|
|
UNALLOCATED |
|
180/8 |
IANA |
|
|
UNALLOCATED |
|
181/8 |
IANA |
|
|
UNALLOCATED |
|
182/8 |
IANA |
|
|
UNALLOCATED |
|
183/8 |
IANA |
|
|
UNALLOCATED |
|
184/8 |
IANA |
|
|
UNALLOCATED |
|
185/8 |
IANA |
|
|
UNALLOCATED |
|
186/8 |
LACNIC |
2007-09 |
whois.lacnic.net |
ALLOCATED |
|
187/8 |
LACNIC |
2007-09 |
whois.lacnic.net |
ALLOCATED |
|
188/8 |
Administered by RIPE NCC |
1993-05 |
whois.ripe.net |
LEGACY |
|
189/8 |
LACNIC |
1995-06 |
whois.lacnic.net |
ALLOCATED |
|
190/8 |
LACNIC |
1995-06 |
whois.lacnic.net |
ALLOCATED |
|
191/8 |
Administered by LACNIC |
1993-05 |
whois.lacnic.net |
LEGACY |
|
192/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
[8] |
193/8 |
RIPE NCC |
1993-05 |
whois.ripe.net |
ALLOCATED |
|
194/8 |
RIPE NCC |
1993-05 |
whois.ripe.net |
ALLOCATED |
|
195/8 |
RIPE NCC |
1993-05 |
whois.ripe.net |
ALLOCATED |
|
196/8 |
Administered by AfriNIC |
1993-05 |
whois.afrinic.net |
LEGACY |
|
197/8 |
IANA |
|
|
UNALLOCATED |
|
198/8 |
Administered by ARIN |
1993-05 |
whois.arin.net |
LEGACY |
[9] |
199/8 |
ARIN |
1993-05 |
whois.arin.net |
ALLOCATED |
|
200/8 |
LACNIC |
2002-11 |
whois.lacnic.net |
ALLOCATED |
|
201/8 |
LACNIC |
2003-04 |
whois.lacnic.net |
ALLOCATED |
|
202/8 |
APNIC |
1993-05 |
whois.apnic.net |
ALLOCATED |
|
203/8 |
APNIC |
1993-05 |
whois.apnic.net |
ALLOCATED |
|
204/8 |
ARIN |
1994-03 |
whois.arin.net |
ALLOCATED |
|
205/8 |
ARIN |
1994-03 |
whois.arin.net |
ALLOCATED |
|
206/8 |
ARIN |
1995-04 |
whois.arin.net |
ALLOCATED |
|
207/8 |
ARIN |
1995-11 |
whois.arin.net |
ALLOCATED |
|
208/8 |
ARIN |
1996-04 |
whois.arin.net |
ALLOCATED |
|
209/8 |
ARIN |
1996-06 |
whois.arin.net |
ALLOCATED |
|
210/8 |
APNIC |
1996-06 |
whois.apnic.net |
ALLOCATED |
|
211/8 |
APNIC |
1996-06 |
whois.apnic.net |
ALLOCATED |
|
212/8 |
RIPE NCC |
1997-10 |
whois.ripe.net |
ALLOCATED |
|
213/8 |
RIPE NCC |
1993-10 |
whois.ripe.net |
ALLOCATED |
|
214/8 |
US-DOD |
1998-03 |
|
LEGACY |
|
215/8 |
US-DOD |
1998-03 |
|
LEGACY |
|
216/8 |
ARIN |
1998-04 |
whois.arin.net |
ALLOCATED |
|
217/8 |
RIPE NCC |
2000-06 |
whois.ripe.net |
ALLOCATED |
|
218/8 |
APNIC |
2000-12 |
whois.apnic.net |
ALLOCATED |
|
219/8 |
APNIC |
2001-09 |
whois.apnic.net |
ALLOCATED |
|
220/8 |
APNIC |
2001-12 |
whois.apnic.net |
ALLOCATED |
|
221/8 |
APNIC |
2002-07 |
whois.apnic.net |
ALLOCATED |
|
222/8 |
APNIC |
2003-02 |
whois.apnic.net |
ALLOCATED |
|
223/8 |
IANA |
|
|
UNALLOCATED |
|
224/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
225/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
226/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
227/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
228/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
229/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
230/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
231/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
232/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
233/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
234/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
235/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
236/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
237/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
238/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
239/8 |
Multicast |
1981-09 |
|
RESERVED |
[10] |
240/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
241/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
242/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
243/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
244/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
245/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
246/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
247/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
248/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
249/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
250/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
251/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
252/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
253/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
254/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
255/8 |
Future use |
1981-09 |
|
RESERVED |
[11] |
[1]
|
Indicates the status of address blocks as follows:
RESERVED: designated by the IETF for specific non-unicast purposes as noted.
LEGACY: allocated by the central Internet Registry (IR) prior to the Regional Internet Registries
(RIRs). This address space is now administered by individual RIRs as noted, including maintenance
of WHOIS Directory and reverse DNS records. Assignments from these blocks are distributed globally
on a regional basis.
ALLOCATED: delegated entirely to specific RIR as indicated.
UNALLOCATED: not yet allocated or reserved.
|
[2]
|
0.0.0.0/8 reserved for self-identification [RFC3330]
|
[3]
|
Reserved for Private-Use Networks [RFC1918]
|
[4]
|
This was reserved for Public Data Networks [RFC1356]
See: http://www.iana.org/assignments/public-data-network-numbers
It was recovered in February 2008.
|
[5]
|
127.0.0.0/8 is reserved for Loopback [RFC3330]
|
[6]
|
169.254.0.0/16 reserved for Link Local [RFC3330]
|
[7]
|
172.16.0.0/12 reserved for Private-Use Networks [RFC1918]
|
[8]
|
192.0.2.0/24 reserved for Test-Net [RFC3330]
192.88.99.0/24 reserved for 6to4 Relay Anycast [RFC3068]
192.168.0.0/16 reserved for Private-Use Networks [RFC1918]
|
[9]
|
198.18.0.0/15 reserved for Network Interconnect Device
Benchmark Testing [RFC3330]
|
[10]
|
Multicast (formerly "Class D") [RFC1700]
See: http://www.iana.org/assignments/multicast-addresses
|
[11]
|
Reserved for future use (formerly "Class E") [RFC1700]
|