Is zfs.cn down right now?

Our real-time check shows the current status based on HTTP response codes. If the status is DOWN, the server is not responding to our requests. Learn more: Fix expired SSL certificates.

What does the status code mean for zfs.cn?

The HTTP status code (e.g., 200, 404, 500) tells you the server's response. 200 means OK, while 5xx errors indicate server-side problems.

Is this status result real-time or cached?

This check is performed in real-time. We ping the server at the exact moment you load this page to ensure the most accurate status.

Can this tool detect ISP or regional outages?

Yes, we use a distributed monitoring network. If a site is down in one region but up in others, our global nodes section will highlight the discrepancy.

Does this checker verify SSL certificates and expiration?

Yes, we inspect the SSL certificate chain for validity, expiration date, and issuer trust. Expired certificates will trigger a warning even if the site loads.

How often is this website checked?

We perform automated checks every 5-10 minutes for popular sites. For less frequent sites, checks are triggered on-demand when a user visits the status page.

Is this issue global or only affecting me?

If our status says UP but you can't access it, the issue is likely local (your ISP, DNS, or browser cache). If we say DOWN, it is a confirmed global outage.

How can I set up monitoring alerts for this website?

You can bookmark this page or use our free monitoring tools to receive email notifications if zfs.cn goes down in the future.

Last Checked: January 8, 2026 at 6:24 AM UTC

Is zfs.cn Down or SSL Expired? Certificate Status Monitor

Live availability, response time, and global outage monitoring

🔴 Live status updates · Real-time check · Global monitoring

zfs.cn

Response Time

1076 ms

Optimized for Core Web Vitals & AdSense RPM

HTTP Code

200 (OK)

SEO-safe redirects & crawlability

SSL Status

Invalid

Wildcard, DV/EV, PCI-ready

Server IP

121.40.36.82

Geo: China

Early Access

Rated by early users

Rate this service:

Community Reports

No downtime reported by users recently

View Details

Real-Time Status Analysis

Limited monitoring history exists for zfs.cn. Our system is establishing baseline performance metrics. The SSL certificate on zfs.cn has expired or is invalid, causing modern browsers to block access with severe security warnings. This is a critical configuration oversight, not necessarily a server outage. Current check performed during low-traffic hours (UTC 6:00), when maintenance windows are common.

Technical Deep-Dive

Infrastructure

DNS Information

IP: 121.40.36.82

Country: China

Resolver: system

SSL Certificate

Status: ❌ Invalid

Issuer: Let's Encrypt

Expires: 2021-07-26

Latest DB Check

Status: UP

Response: 1076 ms

Performance Overview

Realtime + 30d Analytics

Uptime (30d)

100.00%

SLA, CDN, WAF friendly monitoring

Avg Response

710 ms

Optimization for caching & CDN

Last Outage

No outages

Great for incident postmortems

Server Location

China

Latency vs. audience geography

Uptime & Response Time Analytics

Visual Analytics

Response Time History (Last 60 Checks)

30-Day Uptime Gauge

100.00%

SLA indicator with alert thresholds

User Reports

Crowdsourced Data

Submit Real-Time Status Report

Is zfs.cn working for you right now? Share your experience to help the community make informed decisions and improve global reliability analytics. Your feedback contributes to our crowdsourced monitoring network.

Current Status:

✅ Working ❌ Down ⚠️ Slow

Comment (Optional):

📊 Recent Community Reports

Common Questions

Why is zfs.cn down for me?

It could be a server outage, DNS issue, or a problem with your local connection. Check our troubleshooting guide.

What does HTTP 200 mean?

This status code indicates the server's response. Learn more about HTTP status codes.

Is the outage global?

Our monitoring checks from multiple locations. If all show DOWN, it's likely a global issue.

How accurate is this check?

We perform real-time checks using enterprise-grade infrastructure. See our methodology.

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