npm package: @ip-location-db/asn-country
Description: Ip to location database
Author: sapics
Latest version: 2.3.2026041019

# [ip-location-db](https://github.com/sapics/ip-location-db)/asn-country

## Download

| Database | Type | License | Updated | IPv4 | IPv6 | IPv4+IPV6 | IPv4-num | IPv6-num |
|---|---|---|---|---|---|---|---|---|
| [ASN](https://github.com/sapics/ip-location-db/tree/main/asn-country/)<br><br>[![npm version](https://img.shields.io/npm/v/@ip-location-db/asn-country?color=success&style=flat-square&label=CSV)](https://www.npmjs.com/package/@ip-location-db/asn-country)<br>[![npm version](https://img.shields.io/npm/v/@ip-location-db/asn-country-mmdb?color=success&style=flat-square&label=MMDB)](https://www.npmjs.com/package/@ip-location-db/asn-country-mmdb) | Country | [CC0](https://creativecommons.org/publicdomain/zero/1.0/deed) | Daily | [CSV](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country/asn-country-ipv4.csv)<br>[MMDB](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country-mmdb/asn-country-ipv4.mmdb) | [CSV](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country/asn-country-ipv6.csv)<br>[MMDB](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country-mmdb/asn-country-ipv6.mmdb) | [MMDB](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country-mmdb/asn-country.mmdb) | [CSV](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country/asn-country-ipv4-num.csv) | [CSV](https://cdn.jsdelivr.net/npm/@ip-location-db/asn-country/asn-country-ipv6-num.csv) |


## CSV Format

```CSV
ip_range_start, ip_range_end, country_code
```
`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.


### country_code

`country_code` is the two-letter code defined in [ISO 3166-1 alpha-2](https://wikipedia.org/wiki/ISO_3166-1_alpha-2).
You can get the `country name, capital, continent, currency, languages, etc.` from the `country_code` by [Countries Database](https://github.com/annexare/Countries) in JSON, CSV, SQL format.


## Referenced Database



### ASN database [Update: Daily]

Created by merging 5 RIP ([afrinic](https://afrinic.net), [apnic](https://www.apnic.net), [arin](https://www.arin.net), [lacnic](https://www.lacnic.net), [ripe ncc](https://www.ripe.net)) IP-ASN-Country database.
[ASN (Autonomous System Number)](https://wikipedia.org/wiki/Autonomous_system_(Internet)) is a unique number assigned to an Autonomous System (AS) by the [IANA](https://www.iana.org/).



## License

These files are subject to the Creative Commons Zero ([CC0](https://creativecommons.org/publicdomain/zero/1.0/deed)) license. You may use these databases without attribution for any purpose.