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IP::Authority(3)                     User Contributed Perl Documentation                    IP::Authority(3)



NAME
       IP::Authority - fast lookup of authority by IP address

SYNOPSIS
         use IP::Authority;
         my $reg = IP::Authority->new();
         print $reg->inet_atoauth('212.67.197.128')   ."\n";
         print $reg->inet_atoauth('www.slashdot.org') ."\n";

DESCRIPTION
       Historically, the former InterNIC  managed (under the auspices of IANA) the allocation of IP numbers
       to ISPs and other organizations. This changed somewhat when the Regional Internet Registry system was
       started, with the creation of three (and later, four) Regional Internet Registries (RIRs) around the
       world, each managing the allocation of IP addresses to organizations within differing physical areas
       (see also RFC2050).

       This means that there is no central whois database for IP numbers.

       This module allows the user to lookup the RIR who has authority for a particular IP address. After
       finding out the authority for an IP address, it is possible to use the authority's whois server to
       lookup the netblock owner.

CONSTRUCTOR
       The constructor takes no arguments.

         use IP::Authority;
         my $reg = IP::Authority->new();

OBJECT METHODS
       All object methods are designed to be used in an object-oriented fashion.

         $result = $object->foo_method($bar,$baz);

       Using the module in a procedural fashion (without the arrow syntax) won't work.

       $auth = $reg->inet_atoauth(HOSTNAME)
           Takes a string giving the name of a host, and translates that to an two-letter string
           representing the regional Internet registry that has authority of that IP address:

             AR = ARIN (North America)
             RI = RIPE (Europe)
             LA = LACNIC (Latin America)
             AP = APNIC (Asia-Pacific)
             AF = AFRINIC (Africa and Indian Ocean)
             IA = IANA (see RFC3330)

           Takes arguments of both the 'rtfm.mit.edu' type and '18.181.0.24'. If the host name cannot be
           resolved, returns undef. If the resolved IP address is not contained within the database, returns
           undef. For multi-homed hosts (hosts with more than one address), the first address found is
           returned.

       $auth = $reg->inet_ntoauth(IP_ADDRESS)
           Takes a string (an opaque string as returned by Socket::inet_aton()) and translates it into a
           two-letter string representing the regional Internet registry that has authority of that IP
           address:

             AR = ARIN (North America)
             RI = RIPE (Europe)
             LA = LACNIC (Latin America)
             AP = APNIC (Asia-Pacific)
             AF = AFRINIC (Africa and Indian Ocean)
             IA = IANA (see RFC3330)

           If the IP address is not contained within the database, returns undef.

       $t = $reg->db_time()
           Returns the creation date of the database, measured as number of seconds since the Unix epoch
           (00:00:00 GMT, January 1, 1970). Suitable for feeding to "gmtime" and "localtime".

BUGS/LIMITATIONS
       Only works with IPv4 addresses and ASCII hostnames.

SEE ALSO
       IP::Country - fast lookup of country codes from IP address.

       <http://www.apnic.net> - Asia-Pacific

       <http://www.ripe.net> - Europe

       <http://www.arin.net> - North America

       <http://www.lacnic.net> - Latin America

       <http://www.afrinic.net> - Africa and Indian Ocean

COPYRIGHT
       Copyright (C) 2002-2005 Nigel Wetters Gourlay. All Rights Reserved.

       NO WARRANTY. This module is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

       Some parts of this software distribution are derived from the APNIC, LACNIC, ARIN, AFRINIC and RIPE
       databases (copyright details below).  I am not a lawyer, so please direct questions about the RIR's
       licenses to them, not me.

APNIC conditions of use
       The files are freely available for download and use on the condition that APNIC will not be held
       responsible for any loss or damage arising from the application of the information contained in these
       reports.

       APNIC endeavours to the best of its ability to ensure the accuracy of these reports; however, APNIC
       makes no guarantee in this regard.

       In particular, it should be noted that these reports seek to indicate the country where resources
       were first allocated or assigned. It is not intended that these reports be considered as an
       authoritative statement of the location in which any specific resource may currently be in use.

ARIN database copyright
       Copyright (c) American Registry for Internet Numbers. All rights reserved.

       The ARIN WHOIS data is for Internet operational or technical research purposes pertaining to Internet
       operations only.  It may not be used for advertising, direct marketing, marketing research, or
       similar purposes.  Use of the ARIN WHOIS data for these activities is explicitly forbidden.  ARIN
       requests to be notified of any such activities or suspicions thereof.

RIPE database copyright
       The information in the RIPE Database is available to the public for agreed Internet operation
       purposes, but is under copyright.  The copyright statement is:

       "Except for agreed Internet operational purposes, no part of this publication may be reproduced,
       stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical,
       recording, or otherwise, without prior permission of the RIPE NCC on behalf of the copyright holders.
       Any use of this material to target advertising or similar activities is explicitly forbidden and may
       be prosecuted.  The RIPE NCC requests to be notified of any such activities or suspicions thereof."

LACNIC database copyright
       Copyright (c) Latin American and Caribbean IP address Regional Registry. All rights reserved.

AFRINIC copyright
       Seems to be the RIPE copyright. I'm sure they'll correct this in due course.



perl v5.16.2                                     2006-04-06                                 IP::Authority(3)