CRL sites ordered by failures over the last 1 day, updated every 15 mins. 304 sites
Click on a column heading to sort by that column, click twice to reverse order.
Click the site name to see graphs of site performance.
FAQ
Rank Performance graph Company site OS Outage hh:mm:ss Failed Req% DNS Connect First byte Total Kb/s size(K)
1 unknown  0:00:00  0.000  0.230 0.005 0.014 0.014 - 0
2 Linux  0:00:00  0.000  0.813 0.006 0.158 0.256 1208 119
3 unknown  0:00:00  0.000  0.416 0.006 0.013 0.022 10518 93
4 unknown  0:00:00  0.000  0.415 0.006 0.026 0.026 33590 8
5 unknown  0:00:00  0.000  0.414 0.006 0.051 0.052 7489 5
6 Linux  0:00:00  0.000  0.911 0.006 0.081 0.081 44784 2
7 unknown  0:00:00  0.000  0.420 0.006 0.042 0.042 - 0
8 unknown  0:00:00  0.000  0.422 0.006 0.016 0.017 34640 22
9 Linux  0:00:00  0.000  0.422 0.006 0.029 0.029 23845 1
10 Linux  0:00:00  0.000  0.418 0.006 0.013 0.013 - 0
11 unknown  0:00:00  0.000  0.410 0.006 0.041 0.041 - 0
12 unknown  0:00:00  0.000  0.419 0.006 0.041 0.041 - 1
13 unknown  0:00:00  0.000  0.549 0.006 0.031 0.040 6105 51
14 Linux  0:00:00  0.000  0.410 0.006 0.025 0.025 22208 1
15 unknown  0:00:00  0.000  0.429 0.006 0.034 0.034 - 1
16 Linux  0:00:00  0.000  0.412 0.006 0.022 0.022 - 0
17 Linux  0:00:00  0.000  0.420 0.006 0.038 0.038 - 0
18 unknown  0:00:00  0.000  0.408 0.006 0.014 0.028 9074 122
19 Linux  0:00:00  0.000  0.320 0.006 0.050 0.050 - 1
20 unknown  0:00:00  0.000  0.316 0.006 0.047 0.047 - 1
21 unknown  0:00:00  0.000  0.419 0.006 0.014 0.076 15918 985
22 Linux  0:00:00  0.000  0.325 0.006 0.048 0.048 - 1
23 Linux  0:00:00  0.000  0.418 0.006 0.025 0.026 4667 5
24 Linux  0:00:00  0.000  0.427 0.006 0.020 0.020 - 1
25 unknown  0:00:00  0.000  0.410 0.006 0.015 0.015 31525 3
26 Linux  0:00:00  0.000  0.417 0.006 0.039 0.039 - 1
27 Linux  0:00:00  0.000  0.442 0.006 0.022 0.022 - 1
28 unknown  0:00:00  0.000  0.419 0.006 0.016 0.018 12551 28
29 unknown  0:00:00  0.000  0.406 0.006 0.033 0.033 - 0
30 unknown  0:00:00  0.000  0.408 0.006 0.014 0.015 33935 11
31 unknown  0:00:00  0.000  0.417 0.006 0.027 0.027 - 1
32 Linux  0:00:00  0.000  0.424 0.006 0.019 0.019 28291 2
33 Linux  0:00:00  0.000  0.324 0.006 0.045 0.045 - 1
34 Linux  0:00:00  0.000  0.426 0.006 0.023 0.024 42196 3
35 unknown  0:00:00  0.000  0.429 0.006 0.022 0.022 24327 8
36 Linux  0:00:00  0.000  0.314 0.006 0.044 0.044 - 1
37 Linux  0:00:00  0.000  0.414 0.006 0.034 0.034 - 1
38 unknown  0:00:00  0.000  0.413 0.006 0.015 0.023 10056 81
39 unknown  0:00:00  0.000  0.424 0.006 0.022 0.022 51318 2
40 Linux  0:00:00  0.000  0.314 0.006 0.051 0.051 - 1
41 Linux  0:00:00  0.000  0.923 0.006 0.061 0.133 1677 121
42 Linux  0:00:00  0.000  0.306 0.006 0.042 0.043 - 1
43 unknown  0:00:00  0.000  0.541 0.006 0.020 0.020 - 1
44 Linux  0:00:00  0.000  0.325 0.006 0.056 0.056 - 1
45 unknown  0:00:00  0.000  0.406 0.006 0.056 0.057 20073 22
46 Linux  0:00:00  0.000  0.418 0.006 0.014 0.027 9071 123
47 Linux  0:00:00  0.000  0.314 0.006 0.053 0.053 - 1
48 Linux  0:00:00  0.000  0.433 0.006 0.047 0.047 - 1
49 Linux  0:00:00  0.000  0.681 0.006 0.020 0.020 - 1
50 unknown  0:00:00  0.000  0.404 0.007 0.035 0.035 44544 5
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Report from 21-Sep-2018 00:16 till 22-Sep-2018 00:10

Generated on 22-Sep-2018 00:19

Note: Outage times display the minimum outage time which may understate each outage by up to 15 minutes, which is the sampling frequency.

If you are researching prospective hosting locations, or performing competitor analysis and would like to buy bespoke performance monitoring of sites of your choice, or access to historical data, please mail us at sales@netcraft.com

Interpreting the Tables

By default the sites are ranked in order of failed requests and time to connect, shortest first, in order to give the clearest indication of network capacity and congestion, with the least impact from the performance of the individual web server, though it is possible to sort by other columns by clicking on the column heading.

Presently our performance collectors are located at New York/New York Internet-2, Italy/Aruba-2, Pennsylvania/INetU-3, Amsterdam/Webair-2, US West/Azure, Singapore/DigitalOcean, Ireland/Amazon and Zurich/vXtream-2. Sites located near one of our collectors may have an advantage over others listed in the table, though this effect is mitigated by using averages collected from multiple points. Sites exclusively hosted in the Far East are at a disadvantage as we do not currently have a performance collector in the region.

Sites using a Content Distribution Network, such as Akamai, have a particular advantage as the response to our request would come from the node closest to each performance collector.

More information can be found in the FAQ.