Site Toolbox
Start IPEnd IPGeographic location
203.142.100.18203.142.100.18China Mobile Hong Kong Limited DNS server, Hong Kong
203.142.100.21203.142.100.21China Mobile Hong Kong Limited DNS server, Hong Kong
211.103.13.101211.103.13.101China Mobile DNS server, Wuxi, Jiangsu
211.136.28.231211.136.28.231Beijing China Mobile DNS server
211.136.28.234211.136.28.234Beijing China Mobile DNS server
211.136.28.237211.136.28.237Beijing China Mobile DNS server
211.136.112.50211.136.112.50Shanghai Mobile DNS server
211.136.150.66211.136.150.66Shanghai Mobile DNS server
211.136.192.6211.136.192.6Guangdong China Mobile DNS server
211.137.160.5211.137.160.5Tianjin Mobile DNS server
211.137.160.185211.137.160.185Tianjin Mobile DNS server
211.137.241.34211.137.241.35Harbin, Heilongjiang China Mobile DNS server
211.138.75.123211.138.75.123China Mobile DNS server, Xining, Qinghai
211.138.91.1211.138.91.2Hohhot, Inner Mongolia China Mobile DNS server
211.138.106.19211.138.106.19Shanxi China Mobile DNS server
211.138.145.194211.138.145.194China Mobile DNS server, Fuzhou, Fujian
211.138.164.6211.138.164.7China Mobile DNS server, Haikou, Hainan
211.138.180.2211.138.180.3China Mobile DNS server, Hefei, Anhui
211.138.200.69211.138.200.69Jiangsu China Mobile DNS server
211.138.242.18211.138.242.18Nanning, Guangxi China Mobile DNS server
211.138.245.180211.138.245.180Nanning, Guangxi China Mobile DNS server
211.138.252.32211.138.252.32Nanning, Guangxi China Mobile DNS server
211.139.1.3211.139.1.3Guiyang, Guizhou China Mobile DNS server
211.139.2.18211.139.2.18Guiyang, Guizhou China Mobile DNS server
211.139.29.68211.139.29.69Yunnan Province China Mobile DNS server
211.139.29.150211.139.29.150Yunnan Province China Mobile DNS server
211.139.29.170211.139.29.170Yunnan Province China Mobile DNS server
211.139.73.34211.139.73.34China Mobile DNS server, Lhasa, Tibet
211.139.136.68211.139.136.68Guangdong China Mobile DNS server
211.139.163.6211.139.163.6Guangdong China Mobile DNS server
211.141.16.99211.141.16.99Jilin China Mobile DNS server
211.141.90.68211.141.90.68China Mobile DNS server, Nanchang, Jiangxi
211.142.210.98211.142.210.98Changsha, Hunan China Mobile DNS server
211.142.210.100211.142.210.100Changsha, Hunan China Mobile DNS server
218.201.17.2218.201.17.2Chongqing China Mobile DNS server
218.202.152.130218.202.152.130Urumqi, Xinjiang China Mobile DNS server
218.203.101.3218.203.101.4Ningxia China Mobile DNS server
218.203.160.194218.203.160.195China Mobile DNS server, Lanzhou, Gansu
221.130.32.100221.130.32.100Beijing China Mobile DNS server
221.130.32.103221.130.32.103Beijing China Mobile DNS server
221.130.32.106221.130.32.106Beijing China Mobile DNS server
221.130.32.109221.130.32.109Beijing China Mobile DNS server
221.130.33.52221.130.33.52Beijing China Mobile DNS server
221.130.33.60221.130.33.60Beijing China Mobile DNS server
221.130.252.200221.130.252.200Zhejiang China Mobile DNS server
221.176.3.70221.176.3.70Beijing China Mobile DNS server
221.176.3.73221.176.3.73Beijing China Mobile DNS server
221.176.3.76221.176.3.76Beijing China Mobile DNS server
221.176.3.79221.176.3.79Beijing China Mobile DNS server
221.176.3.83221.176.3.83Beijing China Mobile DNS server
221.176.3.85221.176.3.85Beijing China Mobile DNS server
221.176.4.6221.176.4.6Beijing China Mobile DNS server
221.176.4.9221.176.4.9Beijing China Mobile DNS server
221.176.4.12221.176.4.12Beijing China Mobile DNS server
221.176.4.15221.176.4.15Beijing China Mobile DNS server
221.176.4.18221.176.4.18Beijing China Mobile DNS server
221.176.4.21221.176.4.21Beijing China Mobile 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.