List of Class A Networks

Source: ARIN, RIPE, APNIC

Compilation: Adrian Turtschi

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On this page: Networks 1.0.0.0 through 127.0.0.0
NetnumberOrganizationNet HandleAddress 1Address 2Address 3Address 4Address 5Address 6Address 7Address 8Org HandleNetLast Updated
1.0.0.0IANARESERVED-9        RESERVED-91.0.0.0 - 1.255.255.25526-Sep-98.
2.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-22.0.0.0 - 2.255.255.25526-Sep-98.
3.0.0.0General Electric CompanyNET-GE-INTERNET1 Independence WayPrinceton, NJ 08540      GE-INTERNET3.0.0.0 - 3.255.255.25512-Nov-98.
4.0.0.0BBN PlanetNET-SATNET150 Cambridge Park Dr.Cambridge, MA 02138US     SATNET4.0.0.0 - 4.255.255.25517-Feb-99.
5.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-55.0.0.0 - 5.255.255.25526-Sep-98.
6.0.0.0Army Information Systems CenterNET-YPG-NETUSAISC, Yuma Proving GroundYuma, AZ 85365-9102US     YUMA-NET6.0.0.0 - 6.255.255.25526-Sep-98.
7.0.0.0Defense Information Systems AgencyNET-DISANET2DISA /D311440 Isaac Newton SquareReston, VA 22090-5087     DISANET77.0.0.0 - 7.255.255.25526-Sep-98.
8.0.0.0Bolt Beranek and Newman Inc.NET-BBN-NET-TEMP70 Fawcett StreetCambridge, MA 02138      BBNCCNET8.0.0.0 - 8.255.255.25526-Sep-98.
9.0.0.0IBM CorporationNET-IBM1311 Mamaroneck Ave.White Plains, NY 10605      IBM9.0.0.0 - 9.255.255.25528-Oct-98.
10.0.0.0IANARESERVED-6Internet Assigned Numbers AuthorityInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695   RESERVED-1010.0.0.0 - 10.255.255.25526-Sep-98.
11.0.0.0DoD Intel Information SystemsNET-DODIISDefense Intelligence AgencyWashington, DC 20301      DODIIS11.0.0.0 - 11.255.255.25526-Sep-98.
12.0.0.0AT&T ITSNET-ATT101 Crawfords Corner RdHolmdel, NJ 07733-3030US     ATT12.0.0.0 - 12.255.255.25526-Sep-98.
13.0.0.0Xerox Palo Alto Research CenterNET-XEROX-NET3333 Coyote Hill RoadPalo Alto, CA 94304US     XEROX-NET13.0.0.0 - 13.255.255.25531-Dec-98.
14.0.0.0Public Data NetworkNET-PDN        PDN14.0.0.0 - 14.255.255.25526-Sep-98.
15.0.0.0Hewlett-Packard CompanyNET-HP-INTERNET3000 Hanover StreetPalo Alto, CA 94304      HP-INTERNET15.0.0.0 - 15.255.255.25526-Sep-98.
16.0.0.0Digital Equipment CorporationNET-DEC-INTERNET        DEC-INTERNET16.0.0.0 - 16.255.255.25506-Apr-99.
17.0.0.0Apple Computer, Inc.NET-APPLE-WWNET1 Infinite Loop, MS 32-ECupertino, CA 95014US     APPLE-WWNET17.0.0.0 - 17.255.255.25526-Sep-98.
18.0.0.0Massachusetts Institute of TechnologyNET-MIT-TEMP1 Amherst StreetCambridge, MA 02139-1986      MIT18.0.0.0 - 18.255.255.25526-Sep-98.
19.0.0.0Ford Motor CompanyNET-FINETP.O. Box 2053, Room E-1121Dearborn, MI 48121-2053      FINET19.0.0.0 - 19.255.255.25511-Nov-98.
20.0.0.0Computer Sciences CorporationNET-CSC3170 Fairview Park DriveFalls Church, VA 22042      CSC20.0.0.0 - 20.255.255.25511-Nov-98.
21.0.0.0DDN-RVNNET-DDN-RVNDISA / D34311440 Isaac Newton Sq.Reston, VA 22090-5087US    DDN-RVN21.0.0.0 - 21.255.255.25511-Nov-98.
22.0.0.0Defense Information Systems AgencyNET-DISNETAttn: Code B650Washington, DC 20305-2000      DISNET22.0.0.0 - 22.255.255.25511-Nov-98.
23.0.0.0IANANET-DDN-TC-NET        RESERVED-2323.0.0.0 - 23.255.255.25511-Nov-98.
24.0.0.0@Home NetworkNETBLK-ATHOME        (NETBLK-CORP-RDC-SC-1) CORP-RDC-SC-124.0.0.0 - 24.0.0.255 
25.0.0.0Royal Signals and Radar EstablishmentNET-RSRE-EXPSt. Andrews RoadGreat MalvernWorcestershire WR14 3PSUNITED KINGDOM    RSRE-EXP25.0.0.0 - 25.255.255.25511-Nov-98.
26.0.0.0Defense Information Systems AgencyNET-MILNETDISA /D34311440 Isaac Newton SquareReston, VA 22090-5087     MILNET26.0.0.0 - 26.255.255.25511-Nov-98.
27.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695    RESERVED-2727.0.0.0 - 27.255.255.25511-Nov-98.
28.0.0.0ARPA DSI JPONET-DSI-NORTH4601 N. Fairfax Dr., Suite 1001Arlington, VA 22203      DSI-NORTH228.0.0.0 - 28.255.255.25511-Nov-98.
29.0.0.0Defense Information Systems AgencyNET-MILX25-TEMPWashington, DC 20305-2000       MILX25-TEMP29.0.0.0 - 29.255.255.25511-Nov-98.
30.0.0.0Defense Information Systems AgencyNET-ARPAX25-TEMPWashington, DC 20305-2000       ARPAX25-TEMP30.0.0.0 - 30.255.255.25511-Nov-98.
31.0.0.0IANARESERVED-12        RESERVED-3131.0.0.0 - 31.255.255.25511-Nov-98.
32.0.0.0IBM Global ServicesNETBLK-IBMGLOBALSERV4 Bedford FarmsBedford, NH 03110-6528US     IBMGLOBALSERV32.0.0.0 - 32.255.255.25501-Sep-99.
33.0.0.0DLA Systems Automation CenterNET-DCMC3990 East Broad StreetColumbus, OH 43216-5002      DCMC33.0.0.0 - 33.255.255.25511-Nov-98.
34.0.0.0Halliburton CompanyNET-HALLIBURTON5151 San FelipeHouston, TX 77056      HALLIBURTON34.0.0.0 - 34.255.255.25511-Nov-98.
35.0.0.0Merit Network Inc.NET-MERIT4251 Plymouth Road, Suite CAnn Arbor, MI 48105-2785      MERIT35.0.0.0 - 35.255.255.25518-Feb-99.
36.0.0.0Stanford UniversityNET-SU-NET-TEMPNetworking SystemsPine Hall 115Stanford, CA 94305     SU-NET-TEMP36.0.0.0 - 36.255.255.25511-Nov-98.
37.0.0.0Internet Assigned Numbers AuthorityIANA        RESERVED-3737.0.0.0 - 37.255.255.25511-Nov-98.
38.0.0.0Performance Systems InternationalNET-PSINETA510 Huntmar Park DriveHerndon, VA 22070      PSINETA38.0.0.0 - 38.255.255.25511-Nov-98.
39.0.0.0Internet Assigned Numbers AuthorityIANA        RESERVED-39A39.0.0.0 - 39.255.255.25511-Nov-98.
40.0.0.0Eli Lilly and CompanyNET-LILLY-NETLilly Corporate CenterDrop Code: GL45Indianapolis, IN 46285     LILLY-NET40.0.0.0 - 40.255.255.25511-Nov-98.
41.0.0.0Internet Assigned Numbers AuthorityRESERVED-41A        RESERVED-41A41.0.0.0 - 41.255.255.25511-Nov-98.
42.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-4242.0.0.0 - 42.255.255.25511-Nov-98.
43.0.0.0Japan InetNET-JAPAN-AJP       JAPAN-A43.0.0.0 - 43.255.255.25511-Nov-98.
44.0.0.0Amateur Radio Digital CommunicationsNET-AMPRNET        AMPRNET44.0.0.0 - 44.255.255.25525-Aug-99.
45.0.0.0Interop Show NetworkNET-SHOWNETASoftbank Expos / InteropNet360 Caribbean DriveSunnyvale, Ca 94089     SHOWNETA45.0.0.0 - 45.255.255.25511-Nov-98.
46.0.0.0No match
47.0.0.0Bell-Northern ResearchNET-BNRCANADA       BNR47.0.0.003-Jan-91.
48.0.0.0Prudential Securities Inc.NET-PRUBACHE1 New York PlazaNew York, NY 10292      PRUBACHE48.0.0.011-May-95.
49.0.0.0No match
50.0.0.0No match
51.0.0.0Department of Social Security of UKNET-ITSANETNaming and Addressing Authority c/o DITAGovernment Buildings - GZIMoorland RoadLytham St. Annes, Lancashire FY8 3ZZUnited Kingdom   ITSANET51.0.0.013-Apr-99.
52.0.0.0E.I. duPont de Nemours and Co., Inc.NET-DUPONT11007 Market StreetWilmington, DE 19893      DUPONT152.0.0.019-Dec-91.
53.0.0.0cap debis ccsNET-DB-NET2RRZ-S/Kc/o Mercedes Benz AGPostfach 6002 02Mercedestr. 1367000 Stuttgart 60Germany  DB-NET253.0.0.018-Oct-93.
54.0.0.0Merck and Co., Inc.NET-MERCK2126 East Lincoln AvenueRahway, NJ 07095      MERCK254.0.0.017-Mar-92.
55.0.0.0Army National Guard BureauNET-RCAS2NGB-AIS-OS111 S. George Mason Dr.Arlington, VA 22204-1373     RCAS55.0.0.0 - 55.255.255.25502-Oct-98.
56.0.0.0U.S. Postal ServiceNET-USPS14200 Old Wake Forest RoadRaleigh, NC 27668-9700      USPS156.0.0.008-Aug-97.
57.0.0.0SITA-Societe Internationale de Telecommunications AeronautiquesNET-SITA2112 Avenue Charles de Gualle92522 Neuilly sur, CedexFR     SITA-A57.0.0.018-May-99.
58.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-5858.0.0.002-Mar-98.
59.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-5959.0.0.002-Mar-98.
60.0.0.0Internet Assigned Numbers AuthorityIANAInformation Sciences InstituteUniversity of Southern California4676 Admiralty Way, Suite 1001Marina del Rey, CA 90292-6695US   RESERVED-6060.0.0.002-Mar-98.
61.0.0.0Asia Pacific Network Information CenterNETBLK-APNIC2These addresses have been further assigned to Asia-Pacific users.Contact information can be found in the APNIC database,at WHOIS.APNIC.NET or http://www.apnic.net/Please do not send spam complaints to APNIC.    APNIC361.0.0.0 - 61.255.255.25520-Apr-99.
62.0.0.0European Regional Internet Registry/RIPE NCCNETBLK-RIPE-C3These addresses have been further assigned to European users.Contact information can be found in the RIPE database, via theWHOIS and TELNET servers at whois.ripe.net, and athttp://www.ripe.net/db/whois.html    RIPE-C362.0.0.0 - 62.255.255.25516-Oct-98.
63.0.0.0UUNET Technologies, Inc.NETBLK-NETBLK-UUNET97DU3060 Williams Drive, Suite 601Fairfax, va 22031US     NETBLK-UUNET97DU63.0.0.0 - 63.23.255.25522-Jun-99.
64.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
65.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
66.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
67.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
68.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
69.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
70.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
71.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
72.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
73.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
74.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
75.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
76.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
77.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
78.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
79.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
80.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
81.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
82.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
83.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
84.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
85.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
86.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
87.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
88.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
89.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
90.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
91.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
92.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
93.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
94.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
95.0.0.0IANARESERVED-7        RESERVED-764.0.0.0 - 95.255.255.25503-Nov-98.
96.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
97.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
98.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
99.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
100.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
101.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
102.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
103.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
104.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
105.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
106.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
107.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
108.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
109.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
110.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
111.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
112.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
113.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
114.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
115.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
116.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
117.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
118.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
119.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
120.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
121.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
122.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
123.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
124.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
125.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
126.0.0.0IANARESERVED-8        RESERVED-896.0.0.0 - 126.255.255.25503-Nov-98.
127.0.0.0IANALOOPBACK        LOOPBACK127.0.0.002-Mar-98.
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(c) Adrian Turtschi, Sept 19, 1999, and ARIN, RIPE and APNIC.