ASN1 file format description

Many people share .asn1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .asn1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .asn1 files.

1 filename extension(s) found in our database.

.asn1 - Abstract Syntax Notation One Data

The ASN1 data files are related to Java ASN.1 SDK. The ASN1 file is an Abstract Syntax Notation One Data. Abstract Syntax Notation One (ASN.1) is a standard and notation that describes rules and structures for representing, encoding, transmitting, and decoding data in telecommunications and computer networking.

Application:

Java ASN.1 SDK

Category:

Data files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

asn

Abstract Syntax Notation One Data related extensions:

.iqr: CADIQ View Analysis Results Data
.qdw: AnyQuest Questionnaire Definition Data
.iqc: CADIQ Comparison Analysis Data
.ads: Agricultural Data Interchange Syntax File
.trf: LFToolkit Transformation Rules File
.lpw: IRIS Laserforms Lforms Data

Naturally, other applications may also use the .asn1 file extension. Even harmful programs can create .asn1 files. Be especially cautious with .asn1 files coming from an unknown source!

Can't open a .asn1 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:

example.asn1

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Open Control Panel > Control Panel Home > Default Programs > Set Associations.
Select a file type in the list and click Change Program.

The .asn1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

an1, as1, asn, sn1

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.as1: ActionScript 1.0 Source Code
.asn: NCBI ASN.1 Data
.asn: Uniface Assignment Data
.asn: GameSpy Arcade Skin Data
.an1: Street Atlas USA Draw File
.asn: Abstract Syntax Notation One Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

https://datatypes.net/open-asn1-files

If you have useful information about the .asn1 file format, then write to us!