@ip-location-db/geolite2-asn NPM | npm.io

2.3.2025061119 • Published 5 months ago

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5 months ago

ip-location-db/geolite2-asn

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Database	Type	License	Updated	IPv4	IPv6	IPv4+IPV6	IPv4-num	IPv6-num
GeoLite2	ASN	GeoLite2 License by MaxMind	Twice weekly	CSV MMDB	CSV MMDB	MMDB	CSV	CSV

CSV Format

ip_range_start, ip_range_end, autonomous_system_number, autonomous_system_organization

ip_range_start and ip_range_end are either IP addresses, or IP addresses in numeric format (depending upon which files you choose) and these two fields represent an inclusive range of IP addresses for that data row.

For example, in the -ipv4.csv files, the CSV line: 1.0.0.0,1.0.0.255,AU would mean that any IP addresses between 1.0.0.0 and 1.0.0.255 (inclusive) are AU. In -ipv4-num.csv files, the equivalent line would be: 16777216,16777471,AU.

For example, in the -ipv6.csv files, the CSV line: 2001:200::,2001:200:ffff:ffff:ffff:ffff:ffff:ffff,JP would mean that any IP addresses between 2001:200:: and 2001:200:ffff:ffff:ffff:ffff:ffff:ffff (inclusive) are JP. In -ipv6-num.csv files, the equivalent line would be: 42540528726795050063891204319802818560,42540528806023212578155541913346768895,JP.

Please be careful when using IPv6 and IPv6-num files in your program, the numerical value exceeds 32bit unsigned integers, and you would need to use a 128bit unsigned integer.

autonomous_system_number

autonomous_system_number is a unique number assigned to an Autonomous System (AS) by the IANA. wiki.

Referenced Database and License

GeoLite2 database Update: Twice weekly

GeoLite2 is created by MaxMind. The license of GeoLite2 is written in GEOLITE2_LICENSE and End User License Agreement (EULA) is written in GEOLITE2_EULA. Please carefully read the GEOLITE2_LICENSE and GEOLITE2_EULA files, if you use these database. This package comes with certain restrictions and obligations, most notably:

You cannot prevent the library from updating the databases.
You cannot use the GeoLite2 data:
- for FCRA purposes,
- to identify specific households or individuals.

You can read the latest version of GeoLite2 EULA. GeoLite2 databse is provided under CC BY-SA 4.0 by MaxMind, so, you must create attribution to MaxMind for using GeoLite2 database. If you need better accuracy, please use the commercial version GeoIp2.

ip ip-location ip-location-db ipv4 ipv6 location asn autonomous

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