What is ELB-HealthChecker?
ELB-HealthChecker is an Amazon Elastic Load Balancing bot that sends health check requests to determine whether registered targets are healthy. You can set up Agent Analytics to see when ELB-HealthChecker visits your website.
Overview
| Operated By | Amazon |
| Source | Official Website |
| Expected To Follow Robots.txt | No |
| Insights Last Updated | September 4, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
ELB-HealthChecker's traffic often follows fixed intervals like a cron job. Activity may consist of short recurring checks or occasional intensive bursts, but it usually remains limited to a specific set of pages or endpoints.
ELB-HealthChecker's User Agent
| User Agent | ELB-HealthChecker/2.0 |
How To Block ELB-HealthChecker With Robots.txt
Add this rule to your robots.txt file to request that ELB-HealthChecker not access your website, or use Automatic Robots.txt to request the same of all developer helpers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: ELB-HealthChecker # https://knownagents.com/agents/elb-healthchecker
Disallow: /Insights for ELB-HealthChecker
As of September 4, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
6% of top websites block ELB-HealthChecker in their robots.txts.
Overall Developer Helper Traffic
0.7% of all web traffic came from developer helpers.
Frequently Asked Questions
Should I Block ELB-HealthChecker?
Only if no one on your team relies on it. ELB-HealthChecker may support uptime monitoring, performance tests, or audits. Blocking it without checking first can silently disrupt those workflows. For context, 6% of the top websites we track currently have robots.txt rules for ELB-HealthChecker.
Does ELB-HealthChecker Follow Robots.txt Rules?
No. ELB-HealthChecker is not expected to follow robots.txt rules, so a disallow rule only communicates your preference. Enforce the block with firewall or server rules, then use Agent Analytics to verify that its requests stop.
Does ELB-HealthChecker Access Private Content?
Only when configured with access. A team may grant ELB-HealthChecker credentials to monitor staging sites or private health endpoints. Without those credentials, it sees only public pages.
How Can I Tell if ELB-HealthChecker Is Visiting My Website?
Agent Analytics tracks ELB-HealthChecker visits in real time. You can also check your server logs for requests whose user-agent string contains "ELB-HealthChecker". Look for repeated checks of the same pages or endpoints at regular intervals. Because ELB-HealthChecker does not publish a verification method, any client can claim its identity and a log match is only a clue.
Why Is ELB-HealthChecker Visiting My Website?
Someone, most likely on your own team, configured ELB-HealthChecker to check your site. Uptime monitors, performance testers, and audit tools visit only the sites or endpoints they are told to watch.