| User agent |
|---|
| Amazon-Route53-Health-Check-Service (ref b0eb04d5-cb5e-40e7-839b-558e52fc3f0d; report http://amzn.to/1vsZADi) |
| Amazon Route 53 Health Check Service; ref:xxxxxxxx-xxxx-xxxxxxxxx-xxxxxxxxxxxx; report http://amzn.to/xxxxxxx |
| Amazon-Route53-Health-Check-Service |