# AWS ARN Validator Validate Amazon Resource Names (ARNs) format for AWS cloud resources > Canonical page: https://elysiatools.com/en/tools/aws-arn-validator - **Category:** Validation - **Keywords:** aws, arn, amazon, resource, cloud, validator, ec2, s3, lambda, iam ## Overview The AWS ARN Validator is a tool that checks the format of Amazon Resource Names (ARNs) to ensure they are correctly structured for AWS cloud resources, helping prevent configuration errors. ## Inputs - **ARN** (text): Enter ARN (e.g., arn:aws:s3:::bucket-name)... ## When to use - When you need to verify an ARN before using it in IAM policies or AWS resource configurations. - When debugging errors related to invalid ARN references in cloud deployments or scripts. - When automating AWS workflows that require valid ARN inputs for services like S3, Lambda, or EC2. ## How it works - Enter the ARN string into the input field, such as 'arn:aws:s3:::bucket-name'. - The tool parses the ARN into components: partition, service, region, account ID, and resource. - It validates each component against AWS ARN format specifications. - Returns a text result indicating if the ARN is valid or lists specific format errors. ## Use cases - Validating ARNs in IAM policy documents to ensure correct resource access permissions. - Checking ARN formats in CloudFormation templates before deployment to avoid errors. - Verifying ARNs used in AWS CLI commands or SDK calls to prevent runtime failures. ## Frequently asked questions ### What is an AWS ARN? An Amazon Resource Name (ARN) is a unique identifier for AWS resources, used in policies and API calls to specify resources like S3 buckets or Lambda functions. ### Why is ARN validation important? Validating ARNs prevents misconfigurations, security risks, and deployment failures caused by incorrect resource references. ### Does this tool support all AWS services? Yes, it validates ARNs for any AWS service using the standard ARN format, including EC2, S3, Lambda, and IAM. ### Can it check ARNs for specific AWS regions? The tool validates the region component if present, ensuring it matches AWS region formats, but it does not verify if the resource exists. ### What output does the tool provide? It returns a text message confirming if the ARN is valid or detailing any format violations, such as missing components or invalid syntax. ## Related tools - [Phone Validator](https://elysiatools.com/en/tools/phone-validator): Validate and format phone numbers internationally - [SemVer Validator](https://elysiatools.com/en/tools/semver-validator): Validate Semantic Versioning 2.0.0 version numbers (x.y.z-alpha.1 format) - [US Driver's License Validator](https://elysiatools.com/en/tools/us-drivers-license-validator): Validate United States driver's license numbers based on state-specific format rules (CA, NY, TX, FL, etc.) - [US SSN Validator](https://elysiatools.com/en/tools/us-ssn-validator): Validate United States Social Security Number (SSN) format with area number verification - [Global Phone Validator](https://elysiatools.com/en/tools/global-phone-validator): Validate phone numbers from multiple countries including China, US, and more with detailed formatting and carrier info - [License Plate Validator](https://elysiatools.com/en/tools/license-plate-validator): Validate license plate formats from multiple countries including China, USA, Japan, and more - [US ZIP Code Validator](https://elysiatools.com/en/tools/us-zip-code-validator): Validate United States ZIP codes including standard 5-digit and ZIP+4 formats - [US EIN Validator](https://elysiatools.com/en/tools/us-ein-validator): Validate United States Employer Identification Number (EIN) format used for business tax identification ## Samples - [AWS ARN Samples](https://elysiatools.com/en/samples/aws-arn): Collection of Amazon Resource Names (ARNs) for various AWS services and resources - [AWS EventBridge Samples](https://elysiatools.com/en/samples/eventbridge-samples): AWS EventBridge examples including event buses, rules, targets, schema registry, custom events, and cross-account event routing for serverless event-driven architecture - [AWS S3 Lambda Samples](https://elysiatools.com/en/samples/aws-s3-lambda): AWS S3 and Lambda serverless architecture examples including S3 triggers, Lambda functions, and serverless application patterns - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion ## Related content - [Network Infrastructure Identifier Format Checks](https://elysiatools.com/en/hubs/network-infrastructure-identifier-format-checks): Check IPv4 and IPv6 addresses, CIDR values, MAC addresses, AWS ARNs, and Docker image references before downstream processing, while keeping format evidence separate from reachability, ownership, permissions, and image availability.