IP2Location™ LITE IP-ASN Database

Introduction Features Database Fields Database Setup Sample Database

Introduction

ASN Database

This database provides a reference to determine the autonomous system and number (ASN). An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators as a single administrative entity in routing policy.

It is free for personal or commercial use with attribution required by mentioning the use of this data as follows,

Let's explore this database which provides a valuable resource of geolocation data for free now!

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Features

Translates IP address to autonomous system (AS) and autonomous system number (ASN).

Current Version July 2025
IPv4 Database Size BIN: 132.24 MB
CSV: 103 MB (1,357,134 Rows)
MMDB: 10.19 MB
IPv6 Database Size BIN: 220.57 MB
CSV: 97.1 MB (820,528 Rows)
Database Format Binary (BIN)
ASCII Text File (CSV)
MMDB

Database Fields

Name Type Description
ip_from INT (10)† / DECIMAL (39,0)†† First IP address show netblock.
ip_to INT (10)† / DECIMAL (39,0)†† Last IP address show netblock.
cidr VARCHAR(43) IP address range in CIDR.
asn INT(10) Autonomous system number (ASN).
as VARCHAR(256) Autonomous system (AS) name.

† IPv4
†† IPv6

Database Setup

Below are the steps to set up the database for both IPv4 and IPv6 data.

Create Database
CREATE DATABASE ip2location;
USE ip2location;
CREATE TABLE `ip2location_asn`(
	`ip_from` INT(10) UNSIGNED,
	`ip_to` INT(10) UNSIGNED,
	`cidr` VARCHAR(43),
	`asn` VARCHAR(10),
	`as` VARCHAR(256),
	PRIMARY KEY (`ip_to`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
Import Database
LOAD DATA LOCAL
	INFILE 'IP2LOCATION-LITE-ASN.CSV'
INTO TABLE
	`ip2location_asn`
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\r\n'
IGNORE 0 LINES;
Create Database
CREATE DATABASE ip2location
GO

USE ip2location
GO

CREATE TABLE [ip2location].[dbo].[ip2location_asn](
	[ip_from] bigint NOT NULL,
	[ip_to] bigint NOT NULL,
	[cidr] nvarchar(43) NOT NULL,
	[asn] nvarchar(10) NOT NULL,
	[as] nvarchar(256) NOT NULL
) ON [PRIMARY]
GO

CREATE CLUSTERED INDEX [ip_to] ON [ip2location].[dbo].[ip2location_asn]([ip_to]) ON [PRIMARY]
GO
Import Database
BULK INSERT [ip2location].[dbo].[ip2location_asn]
FROM '{PATH TO IP2LOCATION-LITE-ASN.CSV}'
WITH
(
	FORMATFILE = '{PATH TO ASN.FMT}'
)
GO

NOTE: You will need to copy the FMT code below and save it as a file named ASN.FMT on your computer. 

12.0
6
1 SQLCHAR 0 1 "\"" 0 first_double_quote  Latin1_General_CI_AI
2 SQLCHAR 0 20 "\",\"" 1 ip_from "",
3 SQLCHAR 0 20 "\",\"" 2 ip_to "",
4 SQLCHAR 0 43 "\",\"" 3 cidr Latin1_General_CI_AI,
5 SQLCHAR 0 10 "\",\"" 4 asn Latin1_General_CI_AI,
6 SQLCHAR 0 256 "\",\"" 5 as Latin1_General_CI_AI
Create Database
CREATE DATABASE ip2location WITH ENCODING 'UTF8';
\c ip2location
CREATE TABLE ip2location_asn(
	ip_from bigint NOT NULL,
	ip_to bigint NOT NULL,
	cidr character varying(43) NOT NULL,
	asn character varying(10) NOT NULL,
	as character varying(256) NOT NULL,
	CONSTRAINT ip2location_db1_pkey PRIMARY KEY (ip_from, ip_to)
);
Import Database
COPY ip2location_asn FROM 'IP2LOCATION-LITE-ASN.CSV' WITH CSV QUOTE AS '"';
Create Database
CREATE DATABASE ip2location;
USE ip2location;
CREATE TABLE `ip2location_asn_ipv6`(
	`ip_from` DECIMAL(39,0) UNSIGNED,
	`ip_to` DECIMAL(39,0) UNSIGNED,
	`cidr` VARCHAR(43),
	`asn` VARCHAR(10),
	`as` VARCHAR(256),
	PRIMARY KEY (`ip_to`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
Import Database
LOAD DATA LOCAL
	INFILE 'IP2LOCATION-LITE-ASN.IPV6.CSV'
INTO TABLE
	`ip2location_asn_ipv6`
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\r\n'
IGNORE 0 LINES;
Create Database
CREATE DATABASE ip2location
GO

USE ip2location
GO

CREATE TABLE [ip2location].[dbo].[ip2location_asn_ipv6](
	[ip_from] char(39) NOT NULL,
	[ip_to] char(39) NOT NULL,
	[cidr] nvarchar(43) NOT NULL,
	[asn] nvarchar(10) NOT NULL,
	[as] nvarchar(256) NOT NULL
) ON [PRIMARY]
GO

CREATE CLUSTERED INDEX [ip_to] ON [ip2location].[dbo].[ip2location_asn_ipv6]([ip_to]) ON [PRIMARY]
GO
Import Database
BULK INSERT [ip2location].[dbo].[ip2location_asn_ipv6]
FROM '{PATH TO IP2LOCATION-LITE-ASN.IPV6.CSV}'
WITH
(
	FORMATFILE = '{PATH TO ASN.FMT}'
)
GO

NOTE: You will need to copy the FMT code below and save it as a file named ASN.FMT on your computer. The first line of the FMT code indicates the version of bcp. Please change the version as according to your MS-SQL installed. 

12.0
6
1 SQLCHAR 0 1 "\"" 0 first_double_quote  Latin1_General_CI_AI
2 SQLCHAR 0 39 "\",\"" 1 ip_from "",
3 SQLCHAR 0 39 "\",\"" 2 ip_to "",
4 SQLCHAR 0 43 "\",\"" 3 cidr Latin1_General_CI_AI,
5 SQLCHAR 0 10 "\",\"" 4 asn Latin1_General_CI_AI,
6 SQLCHAR 0 256 "\",\"" 5 as Latin1_General_CI_AI
Create Database
CREATE DATABASE ip2location WITH ENCODING 'UTF8';
\c ip2location
CREATE TABLE ip2location_asn_ipv6(
	ip_from decimal(39,0) NOT NULL,
	ip_to decimal(39,0) NOT NULL,
	cidr character varying(43) NOT NULL,
	asn character varying(10) NOT NULL,
	as character varying(256) NOT NULL,
	CONSTRAINT ip2location_db1_pkey PRIMARY KEY (ip_from, ip_to)
);
Import Database
COPY ip2location_asn_ipv6 FROM 'IP2LOCATION-LITE-ASN.IPV6.CSV' WITH CSV QUOTE AS '"';

Sample Database

Below are the sample database for your references. 


"ip_from","ip_to","cidr","asn","as"
"0","16777215","0.0.0.0/8","-","-"
"16777216","16777471","1.0.0.0/24","13335","CloudFlare Inc."
"16777472","16777727","1.0.1.0/24","-","-"
"16777728","16778239","1.0.2.0/23","-","-"
"16778240","16779263","1.0.4.0/22","38803","GTelecom Pty Ltd"
"16779264","16781311","1.0.8.0/21","-","-"
"16781312","16781567","1.0.16.0/24","2519","Arteria Networks Corporation"
"16781568","16781823","1.0.17.0/24","-","-"
"16781824","16782335","1.0.18.0/23","-","-"
"16782336","16783359","1.0.20.0/22","-","-"
"16783360","16785407","1.0.24.0/21","-","-"
"16785408","16793599","1.0.32.0/19","-","-"
"16793600","16809983","1.0.64.0/18","18144","Enecom Inc."
"16809984","16826367","1.0.128.0/18","23969","TOT Public Company Limited"
"16826368","16827391","1.0.192.0/22","23969","TOT Public Company Limited"
"16827392","16827903","1.0.196.0/23","23974","Ministry of Education - EMISC"
"16827904","16828415","1.0.198.0/23","23969","TOT Public Company Limited"
"16828416","16830463","1.0.200.0/21","23969","TOT Public Company Limited"
"16830464","16834559","1.0.208.0/20","23969","TOT Public Company Limited"
"16834560","16842751","1.0.224.0/19","23969","TOT Public Company Limited"
"16842752","16843007","1.1.0.0/24","-","-"
"16843008","16843263","1.1.1.0/24","13335","CloudFlare Inc."
"16843264","16843775","1.1.2.0/23","-","-"
"16843776","16844799","1.1.4.0/22","-","-"
"16844800","16845055","1.1.8.0/24","149511","Yamu Technologies Co. Ltd."
"16845056","16845311","1.1.9.0/24","-","-"
"16845312","16845823","1.1.10.0/23","-","-"
"16845824","16846847","1.1.12.0/22","-","-"
"16846848","16850943","1.1.16.0/20","-","-"
"16850944","16859135","1.1.32.0/19","-","-"
"16859136","16867327","1.1.64.0/19","2519","Arteria Networks Corporation"
"16867328","16871423","1.1.96.0/20","2519","Arteria Networks Corporation"
"16871424","16873471","1.1.112.0/21","2519","Arteria Networks Corporation"
"16873472","16874495","1.1.120.0/22","2519","Arteria Networks Corporation"
"16874496","16875007","1.1.124.0/23","2519","Arteria Networks Corporation"
"16875008","16875263","1.1.126.0/24","2519","Arteria Networks Corporation"
"16875264","16875519","1.1.127.0/24","-","-"
"16875520","16908287","1.1.128.0/17","23969","TOT Public Company Limited"
"16908288","16909311","1.2.0.0/22","-","-"
"16909312","16909567","1.2.4.0/24","24151","China Internet Network Infomation Center"
"16909568","16909823","1.2.5.0/24","-","-"
"16909824","16910335","1.2.6.0/23","-","-"
"16910336","16912383","1.2.8.0/21","-","-"
"16912384","16916479","1.2.16.0/20","-","-"
"16916480","16924671","1.2.32.0/19","-","-"
"16924672","16941055","1.2.64.0/18","-","-"
"16941056","16973823","1.2.128.0/17","23969","TOT Public Company Limited"
"16973824","17039359","1.3.0.0/16","-","-"
"17039360","17072127","1.4.0.0/17","-","-"
"17072128","17104895","1.4.128.0/17","23969","TOT Public Company Limited"
"17104896","17170431","1.5.0.0/16","4725","SOFTBANK Corp. Open Data Network."
"17170432","17203199","1.6.0.0/17","9583","Sify Limited"
"17203200","17205247","1.6.128.0/21","9583","Sify Limited"
"17205248","17205503","1.6.136.0/24","132215","Powergrid Teleservices Limited"
"17205504","17205759","1.6.137.0/24","9583","Sify Limited"
"17205760","17206271","1.6.138.0/23","9583","Sify Limited"
"17206272","17207295","1.6.140.0/22","9583","Sify Limited"
"17207296","17211391","1.6.144.0/20","9583","Sify Limited"
"17211392","17219583","1.6.160.0/19","9583","Sify Limited"
"17219584","17223679","1.6.192.0/20","9583","Sify Limited"
"17223680","17225727","1.6.208.0/21","9583","Sify Limited"
"17225728","17226239","1.6.216.0/23","9583","Sify Limited"
"17226240","17226495","1.6.218.0/24","9583","Sify Limited"
"17226496","17226751","1.6.219.0/24","137130","Punjab National Bank"
"17226752","17227775","1.6.220.0/22","9583","Sify Limited"
"17227776","17228287","1.6.224.0/23","9583","Sify Limited"
"17228288","17228799","1.6.226.0/23","132215","Powergrid Teleservices Limited"
"17228800","17229055","1.6.228.0/24","132215","Powergrid Teleservices Limited"
"17229056","17229311","1.6.229.0/24","4755","Tata Communications Formerly VSNL is Leading ISP"
"17229312","17229567","1.6.230.0/24","4755","Tata Communications Formerly VSNL is Leading ISP"
"17229568","17229823","1.6.231.0/24","9583","Sify Limited"
"17229824","17231871","1.6.232.0/21","9583","Sify Limited"
"17231872","17235967","1.6.240.0/20","9583","Sify Limited"
"17235968","17236223","1.7.0.0/24","9583","Sify Limited"
"17236224","17236479","1.7.1.0/24","-","-"
"17236480","17236735","1.7.2.0/24","-","-"
"17236736","17236991","1.7.3.0/24","9583","Sify Limited"
"17236992","17238015","1.7.4.0/22","9583","Sify Limited"
"17238016","17240063","1.7.8.0/21","9583","Sify Limited"
"17240064","17244159","1.7.16.0/20","9583","Sify Limited"
"17244160","17246207","1.7.32.0/21","9583","Sify Limited"
"17246208","17246463","1.7.40.0/24","9583","Sify Limited"
"17246464","17246719","1.7.41.0/24","-","-"
"17246720","17247231","1.7.42.0/23","-","-"
"17247232","17248255","1.7.44.0/22","-","-"
"17248256","17252351","1.7.48.0/20","-","-"
"17252352","17268735","1.7.64.0/18","-","-"
"17268736","17270783","1.7.128.0/21","9583","Sify Limited"
"17270784","17271807","1.7.136.0/22","9583","Sify Limited"
"17271808","17272319","1.7.140.0/23","9583","Sify Limited"
"17272320","17272575","1.7.142.0/24","132215","Powergrid Teleservices Limited"
"17272576","17272831","1.7.143.0/24","9583","Sify Limited"
"17272832","17273855","1.7.144.0/22","9583","Sify Limited"
"17273856","17274367","1.7.148.0/23","9583","Sify Limited"
"17274368","17274623","1.7.150.0/24","9583","Sify Limited"
"17274624","17274879","1.7.151.0/24","132215","Powergrid Teleservices Limited"
"17274880","17276927","1.7.152.0/21","9583","Sify Limited"
"17276928","17277183","1.7.160.0/24","9583","Sify Limited"
"17277184","17277439","1.7.161.0/24","132215","Powergrid Teleservices Limited"
"17277440","17277695","1.7.162.0/24","132215","Powergrid Teleservices Limited"
"17277696","17277951","1.7.163.0/24","9583","Sify Limited"

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