Regional Internet Registries Statistics Exchange Format
    
    Record format

    Each record in the system represents a single allocation or assignment
    of a specific range of internet numbers (IPv4, IPv6 or ASN).
    
    Each record has the following format:

    registry|cc|type|address|length|date|status


    1. registry = {iana,apnic,ripencc,arin,lacnic,afrinic}; (or maybe
       a fixed-length version of the registry name)

    2. cc = ISO 2-letter code for countrry to which the alloc was
       made.

    3. type = type of internet first number in the allocated range, as
       an IPv4 address, IPv6 address or AS number;

    4. address = first number in the range

    5. length = either the prefix length, or the number of ASNs in the
       range (interpreted according to the value in the type field)
    
    6. date = date on this this allocation/assignment was made by the
       registry;

    7. status = type of allocation {allocated, assigned}