Site Toolbox
202.38.64.1202.38.64.1China Hefei, Anhui University of Science and Technology of China DNS server
202.103.243.112202.103.243.112Guilin University of Electronic Technology DNS server, Guilin, Guangxi
202.112.112.10202.112.112.10Beijing Renmin University of China DNS server
202.112.144.30202.112.144.30Beijing Jiaotong University DNS server
202.113.16.10202.113.16.10Nankai University Network Center preferred DNS server
202.113.16.11202.113.16.11Nankai University student mail system, network center backup DNS server
202.114.0.242202.114.0.242Wuhan, Hubei Huazhong University of Science and Technology DNS server
202.114.240.6202.114.240.6Wuhan, Hubei Wuhan University of Science and Technology DNS server
202.115.32.39202.115.32.39Chengdu, Sichuan Sichuan Union University DNS server
202.175.3.3202.175.3.3Macau Macau University DNS server
202.175.3.8202.175.3.8Macau Macau University DNS server
202.193.64.33202.193.64.33Guilin University of Electronic Technology DNS server, Guilin, Guangxi
202.196.64.1202.196.64.1Zhengzhou, Henan Zhengzhou University DNS server
202.203.144.33202.203.144.34Kunming, Yunnan Yunnan Minzu University DNS server
202.203.160.33202.203.160.34Kunming, Yunnan Kunming University of Science and Technology DNS server
202.203.192.33202.203.192.33Kunming, Yunnan Yunnan University of Finance and Economics DNS server
202.203.208.33202.203.208.34Kunming, Yunnan Yunnan University DNS server
202.203.224.33202.203.224.34Kunming, Yunnan Yunnan Normal University DNS server
210.38.192.33210.38.192.33Shaoguan, Guangdong Shaoguan University DNS server
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How to use

This tool belongs to the “Network diagnostics” category.

  1. 1Enter a domain, IP or full URL, without stray spaces around the scheme.
  2. 2Run the lookup and wait; multi-region checks need a moment to collect every response.
  3. 3Copy the findings (status code, TTL, latency) and line them up against your own logs.

Your input is processed locally in the browser whenever possible. We do not store it.

Frequently asked questions

Why is the result different from my server?

Checks originate from our own data centre, so the network path differs from yours. Differences are normal for cross-border results or carrier-level caches.

The check timed out

The target may block probes, rate-limit them, or serve only certain regions. Retry with another tool or at another time.

Can it probe private addresses?

No. Loopback, private and reserved ranges are refused so the tools cannot be used to scan internal networks.