mqtt.cn-1.test.novo-one.com DNS Lookup

Carrier
DNS

Nationwide Speed Map

Nationwide Speed Map
  • >10s
  • 3s-10s
  • 1s-3s
  • 0.5s-1s
  • <=0.5s
100%
RegionFastestSlowestAverage
All Nodes辽宁铁岭电信 0.004s福建宁德联通 5.632s0.285s
China Telecom辽宁铁岭电信 0.004s山东青岛电信 2.350s0.222s
China Unicom浙江温州1联通 0.013s福建宁德联通 5.632s0.426s
China Mobile宁夏银川移动 0.006s贵州黔南移动 4.151s0.242s
East China安徽马鞍山电信 0.011s福建宁德联通 5.632s0.347s
South China广东佛山电信 0.018s广东韶关联通 2.217s0.253s
Central China河南驻马店移动 0.019s湖北恩施联通 0.948s0.230s
North China北京移动 0.015s内蒙古赤峰联通 0.796s0.178s
Southwest贵州贵阳移动 0.019s贵州黔南移动 4.151s0.445s
Northwest宁夏银川移动 0.006s陕西渭南电信 1.141s0.225s
Northeast辽宁铁岭电信 0.004s吉林通化移动 0.765s0.219s
HK/MO/TW台湾台北 0.052s澳门 0.389s0.203s

DNS Resolution Stats

2

Showing: 305/305

NodeTargetTypeResolved ResultsRecordsDetailTimeDNS
电信北京电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
283ms8.8.8.8
电信北京电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
228ms127.0.0.53
电信天津电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
279ms223.5.5.5
电信上海徐汇电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
274ms8.8.8.8
电信上海奉贤电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
232ms127.0.0.53
电信重庆黔江电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2326ms8.8.8.8
电信重庆江津电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
240ms127.0.0.53
电信重庆两江电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2249ms223.5.5.5
电信河北邢台电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2144ms223.5.5.5
电信河北唐山电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2133ms223.5.5.5
电信河北石家庄电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2500ms223.5.5.5
电信河北电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
228ms114.114.114.114
电信河南三门峡电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2848ms222.88.88.88
电信河南商丘电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2845ms119.29.29.29
电信河南郑州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
251ms100.95.0.1
电信河南开封电信mqtt.cn-1.test.novo-one.comA--0Timeout223.5.5.5
电信河南驻马店电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2237ms192.168.5.1
电信河南漯河电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
231ms222.85.85.85
电信河南南阳电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2851ms223.5.5.5
电信河南信阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2229ms192.168.1.1
电信云南昆明电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
231msfe80::5
电信云南文山电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
236ms61.166.150.123
电信辽宁辽阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2131ms8.8.8.8
电信辽宁铁岭电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
24ms219.148.204.66
电信辽宁沈阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2144ms8.8.8.8
电信辽宁鞍山电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2563ms223.5.5.5
电信辽宁盘锦电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
224ms219.148.204.66
电信黑龙江鸡西电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2120ms112.100.100.100
电信湖南郴州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
266ms8.8.8.8
电信湖南长沙电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
249ms100.95.0.1
电信湖南衡阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
273ms8.8.8.8
电信湖南株洲电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
282ms223.5.5.5
电信湖南长沙1电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
271ms119.29.29.29
电信湖南邵阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2222ms127.0.0.53
电信岳阳电信电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2126ms127.0.0.53
电信安徽芜湖电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2114ms8.8.8.8
电信安徽池州电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2104ms127.0.0.53
电信安徽滁州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
216ms223.5.5.5
电信安徽黄山电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
21709ms223.5.5.5
电信安徽安庆电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
241ms114.114.115.115
电信安徽淮南电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
297ms202.102.213.68
电信安徽合肥电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
221ms61.132.163.68
电信安徽马鞍山电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
211ms192.168.0.1
电信安徽合肥电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
213ms8.8.8.8
电信山东青岛1电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2503ms100.95.0.1
电信山东枣庄电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
255ms223.5.5.5
电信山东济南电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2128ms119.29.29.29
电信山东龙口电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2108ms8.8.8.8
电信山东青岛电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
22350ms223.5.5.5
电信新疆乌鲁木齐电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2130ms100.95.0.1
电信江苏苏州电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
276ms223.5.5.5
电信江苏宿迁电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
230ms127.0.0.53
电信江苏盐城电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2440ms8.8.8.8
电信江苏泰州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
250ms223.5.5.5
电信江苏连云港电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
216ms223.5.5.5
电信江苏徐州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
263ms223.5.5.5
电信江苏无锡电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2390ms223.5.5.5
电信江苏盐城1电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
268ms127.0.0.53
电信江苏南通电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
261ms223.5.5.5
电信江苏南京电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2716ms8.8.8.8
电信宿迁电信mqtt.cn-1.test.novo-one.comA--0Timeout--
电信浙江宁波电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2116ms127.0.0.53
电信浙江杭州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2429ms100.95.0.1
电信浙江嘉兴电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
280ms223.6.6.6
电信浙江金华电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2104ms127.0.0.53
电信浙江绍兴电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
278ms114.114.115.115
电信浙江温州1电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
259ms61.153.177.196
电信浙江温州电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
289ms127.0.0.53
电信浙江衢州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
216ms202.96.113.34
电信浙江丽水电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
278ms223.6.6.6
电信江西南昌电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
215ms127.0.0.53
电信江西吉安电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2157ms192.168.1.1
电信江西赣州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2633ms119.29.29.29
电信湖北十堰电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
239ms127.0.0.53
电信湖北武汉电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2304ms202.103.24.68
电信湖北咸宁电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2347ms1.1.1.1
电信湖北恩施电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2533ms223.5.5.5
电信湖北十堰电信mqtt.cn-1.test.novo-one.comA--0Timeout--
电信广西贵港电信mqtt.cn-1.test.novo-one.comA--0Timeoutfe80::1
电信广西南宁电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
225ms202.103.224.68
电信广西南宁1电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
272ms100.95.0.1
电信广西玉林电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
21039ms223.5.5.5
电信广西柳州电信mqtt.cn-1.test.novo-one.comA--0Timeout192.168.1.1
电信甘肃兰州电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2224ms8.8.8.8
电信甘肃庆阳1电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2225ms127.0.0.53
电信甘肃平凉电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
250ms192.168.1.1
电信甘肃武威电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2225ms223.5.5.5
电信内蒙古呼和浩特电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
245ms100.95.0.1
电信内蒙古巴彦淖尔电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2263ms223.5.5.5
电信内蒙古包头电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2147ms223.5.5.5
电信陕西西安1电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2230msfe80::1
电信陕西渭南电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
21141ms127.0.0.53
电信陕西西安电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2563ms127.0.0.53
电信陕西咸阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
236ms218.30.19.40
电信吉林辽源电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2573ms119.29.29.29
电信吉林松原电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2195ms240e:211::6666
电信福建福州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
282ms8.8.8.8
电信福建厦门电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
291ms223.5.5.5
电信福建漳州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
290ms223.5.5.5
电信福建三明电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
292ms114.114.115.115
电信福建宁德电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
299ms223.5.5.5
电信福建泉州电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
297ms223.5.5.5
电信贵州贵阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2251ms8.8.8.8
电信贵州黔南电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2269ms192.168.31.1
电信广东广州1电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
233msfe80::5
电信广东揭阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2199ms223.5.5.5
电信广东佛山电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
218msfe80::1
电信广东清远电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2101ms127.0.0.53
电信广东湛江电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
220ms223.5.5.5
电信广东广州电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
289ms202.96.128.86
电信青海西宁电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2674ms8.8.8.8
电信青海海东电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2313ms192.168.1.1
电信电信青海mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
276ms127.0.0.53
电信西藏拉萨1电信mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2204ms8.8.8.8
电信西藏拉萨电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
252ms127.0.0.53
电信四川成都电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2257ms119.29.29.29
电信四川自贡电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2257ms61.139.2.69
电信四川绵阳电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2267ms223.5.5.5
电信四川广安电信mqtt.cn-1.test.novo-one.comA--0Timeout--
电信宁夏银川电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
244ms192.168.2.1
电信海南三亚电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
228ms8.8.8.8
电信海南海口电信mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
259ms127.0.0.53
联通北京联通mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
251ms127.0.0.53
联通天津联通mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
222ms180.76.76.76
联通上海联通mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
261ms8.8.8.8
联通上海数据中心mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
21889ms127.0.0.53
联通重庆联通mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
244msfe80::1
联通河北邯郸联通mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
232ms119.29.29.29
联通河北邢台联通mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
256ms202.99.160.68
联通河北唐山联通mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2322ms119.29.29.29
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43.198.8.13818.166.174.80
254ms::1
移动四川成都移动mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2345ms8.8.8.8
移动四川乐山移动mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2375ms211.137.96.205
移动四川广安移动mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
246ms127.0.0.53
移动宁夏银川移动mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
26ms192.168.1.1
移动宁夏中卫移动mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
231ms192.168.1.1
移动宁夏银川1移动mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
238ms127.0.0.53
海外台湾高雄mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
292ms127.0.0.53
海外台湾台北mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
252ms8.8.8.8
海外香港mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2277ms1.1.1.1
海外澳门mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2389ms1.1.1.1
海外卡塔尔mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2287ms127.0.0.53
海外沙特阿拉伯mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2366ms127.0.0.53
海外印度mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2145ms127.0.0.53
海外印度尼西亚mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2278ms127.0.0.53
海外新加坡mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2236ms127.0.0.53
海外日本东京mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2186ms1.1.1.1
海外以色列mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2317ms127.0.0.53
海外韩国mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2101ms127.0.0.53
海外越南mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2175ms8.8.8.8
海外马来西亚mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2532ms1.1.1.1
海外菲律宾mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2383ms1.1.1.1
海外泰国mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2368ms127.0.0.53
海外韩国mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
233ms169.254.169.254
海外菲律宾mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2279ms192.168.31.1
海外英国mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2297ms127.0.0.53
海外芬兰mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2325ms127.0.0.53
海外西班牙mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2329ms127.0.0.53
海外德国mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2299ms127.0.0.53
海外法国mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2252ms127.0.0.53
海外波兰mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2303ms127.0.0.53
海外美国芝加哥‌mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2174ms8.8.8.8
海外美国华盛顿mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2171ms8.8.8.8
海外巴西mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2324ms127.0.0.53
海外南非mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2399ms127.0.0.53
海外澳大利亚mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2291ms127.0.0.53
海外俄罗斯莫斯科mqtt.cn-1.test.novo-one.comA
43.198.8.13818.166.174.80
2211ms8.8.8.8
海外柬埔寨金边mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2187ms8.8.8.8
海外迪拜mqtt.cn-1.test.novo-one.comA
18.166.174.8043.198.8.138
2408ms38.54.8.230

DNS Test Findings for mqtt.cn-1.test.novo-one.com

Tested
Oct 15, 2026, 4:11 PM
Completed probes
305/305
DNS response probes
296 (97%)
Average DNS lookup time
284 ms

This DNS lookup test ran on 2026-10-15 08:11 UTC. The overall DNS response rate was 97%, below the 99% warning threshold, with 9 nodes not obtaining a valid result. Median DNS lookup time was 134 ms and P95 was 912 ms.

mqtt.cn-1.test.novo-one.com DNS lookup performance by network

DNS response rate counts probes with a DNS response and measured lookup time. P50 is the time at or below which half of responding lookups completed; a response need not contain an address and does not establish propagation or poisoning.

DNS response rate

DNS response rate (%)

100%Highest rate
DNS response rateDNS response rate counts probes with a DNS response and measured lookup time. P50 is the time at or below which half of responding lookups completed; a response need not contain an address and does not establish propagation or poisoning.050100Telecom: 95.1%95.1%TelecomUnicom: 100%100%UnicomMobile: 96%96%MobileOverseas: 100%100%Overseas

P50 DNS lookup time

DNS lookup time (ms)

97 msLowest P50
P50 DNS lookup timeDNS response rate counts probes with a DNS response and measured lookup time. P50 is the time at or below which half of responding lookups completed; a response need not contain an address and does not establish propagation or poisoning.0150300Telecom: 97 ms97 msTelecomUnicom: 161 ms161 msUnicomMobile: 122 ms122 msMobileOverseas: 283 ms283 msOverseas
DNS response rate counts probes with a DNS response and measured lookup time. P50 is the time at or below which half of responding lookups completed; a response need not contain an address and does not establish propagation or poisoning.

Key findings

  • The overall DNS response rate was 97%, under the 99% threshold, with 9 of 305 nodes returning no valid resolved result.
  • Telecom showed a 95.1% response rate, Unicom and overseas 100%, and Mobile 96%, indicating response-rate differences across carriers.
  • Unicom P90 was 1046 ms, well above Telecom at 563 ms and Mobile at 375 ms, showing a wider DNS lookup time spread.
  • Only 2 unique response IPs were observed, which describes answer diversity only and does not establish resolution correctness or any root cause.

Improvement recommendations

  • The DNS response rate is 97%, below the 99% review threshold. Retest the unanswered probes and verify the authoritative DNS service, query type, and record only if failures persist.

These results describe this distributed test only and do not establish long-term availability, security, or a root cause.