___________________________________________________________________ APNIC ASSIGNMENT REPORTS (version 1.0 9 September 2005) ___________________________________________________________________ Contents: 1. About these reports 2. Conditions of use 3. Statistics format 1. ABOUT ASSIGNMENT REPORTS ____________________________________________________________________ Assignment files contain daily summary reports of the total number of IP address assignments registered in the APNIC region, sorted by ISO 3166 country code and prefix length. The assignment statistics include both publically visible assignments registered in the APNIC Whois Database as well as private customer assignments. The resources reported are: - IPv4 addresses - IPv6 addresses These reports are produced to provide consistent and accessible Internet resource statistics on end user IP address consumption in the APNIC region. It is hoped these reports will lead to increased research and analysis of the global use of address resources. These assignment files use and extend the format used by the Regional Internet Registries (RIRs) to prodcue allocation and assignment reports for each RIR. For detailed information on the RIR statistics exchange format, see: http://www.apnic.net/db/rir-stats-format.html 2. 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 use 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 summarise the number of assignments of a particular prefix length within a particular economy that have been registered in the public APNIC Whois Database and the private database. It is not intended that these reports be considered as an authoritative statement on the number of assignments actively being routed on the global Internet. 3. STATISTICS FORMAT ____________________________________________________________________ 3.1 File names ------------------ Each file is named using the format: assigned-apnic- The most recent file will also be available under the name: assigned-apnic-latest 3.2 File format ------------------- The file consists of: - file header lines - records The vertical line character '|' (ASCII code 0x7c) is used as the CSV field separator. After the header lines, records are not sorted. 3.2.2 File header ------------------- The file header consists of the version line and the summary lines for each type of record. Note: the file header is currently included in the comment text (denoted by the # character at the beginning of each line). The file header may be uncommented in the future. Any changes to the file will be publicised on the APNIC web site prior to deployment. Version line ------------ Format: version|registry|serial|records|startdate|enddate|UTCoffset Where: version format version number of this file, currently 1; registry as for records and filename (see below); serial serial number of this file (within the creating RIR series); records number of records in file, excluding blank lines, summary lines, the version line and comments; startdate start date of time period, in yyyymmdd format; enddate end date of period in yyyymmdd format; UTCoffset offset from UTC (+/- hours) of local RIR producing file. Summary line ------------ The summary lines count the number of record lines of each type in the file. Format: registry|*|type|*|count|summary Where: registry as for records (see below); * an ASCII '*' (unused field, retained for spreadsheet purposes); type as for records (defined below); count sum of the number of record lines of this type in the file. summary the ASCII string 'summary' (to distinguish the record line); Note that the count does not equate to the total amount of resources for each class of record. This is to be computed from the records themselves. 3.2.2 Records --------------- After the defined file header, and excluding any space or comments, each line in the file represents a particular size of assignment in a particular economy and how many instances of that assignment have been made within that economy. IPv4 records may represent non-CIDR ranges or CIDR blocks, and therefore the record format represents the beginning of range, and account. This can be converted to prefix/length using simple algorithms. IPv6 records represent the prefix and the count of /128 instances under that prefix. Format: registry|cc|type||value||status|instances Where: registry The registry from which the data is taken. For APNIC resources, this will be: apnic cc ISO 3166 2-letter code of the organisation to which the allocation or assignment was made. type Type of Internet number resource represented in this record. One value from the set of defined strings: {ipv4,ipv6} value In the case of IPv4 address the count of hosts for this range. This count does not have to represent a CIDR range. In the case of an IPv6 address the value will be the CIDR prefix length of the assignment status In assignment statistics files, the status will always be: assigned instances Total number of instances of assignments with specified in 'value' 3.3 Historical resources ---------------------------- Early Registration Transfers (ERX) and AUNIC legacy records do not have any special tagging in the statistics reports. ____________________________________________________________________ If you any questions or comments about these reports, please contact ____________________________________________________________________