Nationwide Speed Map
- >10s
- 3s-10s
- 1s-3s
- 0.5s-1s
- <=0.5s
282 monitoring points in this test
100%
| Region | Fastest | Slowest | Average |
|---|---|---|---|
| All Nodes | 北京电信 0.021s | 上海数据中心 0.079s | 0.043s |
| China Telecom | 北京电信 0.021s | 贵州贵阳电信 0.027s | 0.024s |
| China Unicom | 甘肃联通 0.065s | 上海数据中心 0.079s | 0.072s |
| China Mobile | -- | -- | -- |
| East China | 上海数据中心 0.079s | 上海数据中心 0.079s | 0.079s |
| South China | -- | -- | -- |
| Central China | -- | -- | -- |
| North China | 北京电信 0.021s | 河北电信 0.025s | 0.023s |
| Southwest | 贵州贵阳电信 0.027s | 贵州贵阳电信 0.027s | 0.027s |
| Northwest | 甘肃联通 0.065s | 甘肃联通 0.065s | 0.065s |
| Northeast | -- | -- | -- |
| HK/MO/TW | -- | -- | -- |
DNS Resolution Stats
2Showing: 282/282
| Node | Target | Type | Resolved Results | Records | Detail | Time | DNS |
|---|---|---|---|---|---|---|---|
| 电信贵州贵阳电信Home | chahu.com | A | 154.38.98.150154.38.98.137 | 2 | 27ms | 114.114.114.114 | |
| 电信湖北十堰电信Home | chahu.com | A | -- | 0 | Timeout | ||
| 电信深圳电信Home | chahu.com | A | -- | 0 | Timeout | ||
| 电信苏州电信Home | chahu.com | A | -- | 0 | Timeout | ||
| 电信四川广安电信Home | chahu.com | A | -- | 0 | Timeout | ||
| 电信河北电信Home | chahu.com | A | 154.38.98.137154.38.98.150 | 2 | 25ms | 114.114.114.114 | |
| 电信北京电信Home | chahu.com | A | 154.38.98.150154.38.98.137 | 2 | 21ms | 127.0.0.53 | |
| 联通甘肃联通Home | chahu.com | A | 154.38.98.150154.38.98.137 | 2 | 65ms | 127.0.0.53 | |
| 联通上海数据中心Home | chahu.com | A | 154.38.98.137154.38.98.150 | 2 | 79ms | 127.0.0.53 | |
| 海外俄罗斯莫斯科Home | chahu.com | A | 154.38.98.137154.38.98.150 | 2 | 321ms | 8.8.8.8 | |
| 海外柬埔寨金边Home | chahu.com | A | 154.38.98.150154.38.98.137 | 2 | 49ms | 8.8.8.8 | |
| 海外迪拜Home | chahu.com | A | 154.38.98.137154.38.98.150 | 2 | 610ms | 38.54.8.230 | |
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
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| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
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| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout | ||
| 海外 | chahu.com | A | -- | 0 | Timeout |
DNS Test Findings for chahu.com
- Tested
- Aug 21, 2026, 4:41 PM
- Completed probes
- 282/282
- DNS response probes
- 8 (2.8%)
- Average DNS lookup time
- 150 ms
In this DNS lookup test, the overall response rate was 98.6%, slightly below the 99% threshold, detecting a low response rate issue. The telecom carrier had a response rate of 96.6%, with 4 nodes not obtaining a response.
chahu.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
P50 DNS lookup time
DNS lookup time (ms)
25 msLowest P50
Key findings
- The overall DNS response rate was 98.6%, below the 99% threshold, triggering a low response rate warning.
- The telecom carrier had a response rate of 96.6%, with 4 nodes not obtaining a response, while other carriers had 100% response rates.
- DNS lookup time median (p50) was 0 ms, p90 was 24 ms, p95 was 38 ms, and the overall average was 16 ms.
- The observed resolved address count was 2, indicating answer diversity only, not correctness.
Improvement recommendations
- The DNS response rate is 2.8%, below the 99% review threshold. Retest the unanswered probes and verify the authoritative DNS service, query type, and record only if failures persist.
- overseas trails China Telecom by 41.8 percentage points in response rate. Retest both groups with the same probe set, then investigate the affected network or endpoint only if the gap repeats.
These results describe this distributed test only and do not establish long-term availability, security, or a root cause.