Why does my DNS test show "red" errors?

Sometimes when customers test our links using monitoring tools, everything shows red — yet the links actually work fine. Here's why.

Reason:

1. We use multiple IPs for high availability and fault tolerance

• A single domain is backed by multiple servers/IP addresses providing service together.
• Benefit: Even if one server or route has temporary issues, other IPs can take over, keeping the service available for real users.

1. Monitoring tools test one IP and flag it as down, but browsers automatically switch

• Customer monitoring tools typically test just one randomly selected IP: Random pick of IP-C → Alert "site is down" ❌
• But real user browsers don't only try one server:

Real browser: Tries IP-A, B, C → Uses A or B → Normal access ✅

Correct Testing Method

1. Use a real browser — Type the URL directly in the browser address bar. This is the most accurate test method.
2. Refresh a few times — If the first load is slow, the browser will automatically select a faster IP on refresh.
3. Use incognito/private mode — To rule out cache interference.

Note ⚠️: Only when a real browser cannot open the page — after ruling out network factors — should you begin investigating other causes.