CRL sites ordered by failures over the last 1 day, updated every 15 mins. 305 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 Windows 2000  23:51:31  100.000  - - - - - -
2 Linux  23:51:31  100.000  - - - - - -
3 F5 BIG-IP  23:51:16  100.000  - - - - - -
4 unknown  23:51:16  100.000  - - - - - -
5 unknown  23:51:08  100.000  - - - - - -
6 unknown  23:51:05  100.000  - - - - - -
7 Linux  23:50:23  100.000  - - - - - -
8 Linux  23:47:22  100.000  - - - - - -
9 FreeBSD  23:46:22  100.000  - - - - - -
10 Windows Server 2003  23:46:21  100.000  - - - - - -
11 F5 BIG-IP  23:46:21  100.000  - - - - - -
12 F5 BIG-IP  23:46:21  100.000  - - - - - -
13 F5 BIG-IP  23:46:20  100.000  - - - - - -
14 Linux  23:46:14  100.000  - - - - - -
15 Linux  23:45:27  100.000  - - - - - -
16 Linux  23:38:53  100.000  - - - - - -
17 F5 BIG-IP  0:25:08  50.327  0.259 0.082 0.165 0.246 112 9
18 unknown  0:55:31  46.736  0.216 0.068 0.137 11.660 778 8963
19 F5 BIG-IP  0:00:00  39.869  0.533 0.365 0.722 0.722 - 0
20 F5 BIG-IP  0:00:00  38.824  0.538 0.383 0.783 0.784 3440 4
21 Linux  0:00:00  4.700  0.292 0.007 0.067 0.067 - 1
22 unknown  0:00:00  3.272  0.936 0.427 0.793 3.795 46 139
23 unknown  0:00:00  2.621  0.345 0.007 0.052 0.052 30625 13
24 Linux  0:00:00  2.219  0.281 0.007 0.051 0.051 - 1
25 Linux  0:00:00  2.092  0.355 0.007 0.037 0.037 - 0
26 unknown  0:00:00  1.958  0.419 0.097 0.196 0.196 - 1
27 Linux  0:00:00  1.702  0.454 0.107 0.211 3.107 208 603
28 Linux  0:00:00  1.436  0.292 0.007 0.081 0.081 - 1
29 unknown  0:00:00  1.309  0.351 0.008 0.055 0.055 - 1
30 unknown  0:00:00  1.048  0.339 0.007 0.032 0.032 - 0
31 unknown  0:00:00  0.915  1.297 0.448 0.906 0.906 - 1
32 Linux  0:00:00  0.783  0.282 0.007 0.054 0.054 - 1
33 unknown  0:00:00  0.655  1.438 0.481 0.945 0.949 - 1
34 Linux  0:00:00  0.655  0.346 0.007 0.029 0.029 - 0
35 unknown  0:00:00  0.654  0.356 0.007 0.049 0.049 23655 3
36 Linux  0:00:00  0.654  0.368 0.007 0.031 0.031 - 1
37 Linux  0:00:00  0.653  0.277 0.007 0.052 0.052 - 1
38 Linux  0:00:00  0.522  0.262 0.007 0.049 0.049 - 1
39 Linux  0:00:00  0.522  0.273 0.007 0.050 0.050 - 1
40 Linux  0:00:00  0.392  0.750 0.283 0.533 0.533 - 1
41 Linux  0:00:00  0.392  0.290 0.007 0.049 0.049 - 1
42 Linux  0:00:00  0.262  0.372 0.007 0.040 0.040 - 1
43 unknown  0:00:00  0.261  1.066 0.433 0.834 0.835 - 1
44 Linux  0:00:00  0.261  0.285 0.007 0.056 0.056 - 1
45 Windows Server 2003  0:00:00  0.131  0.270 0.084 0.170 2.161 153 304
46 unknown  0:00:00  0.131  0.280 0.007 0.049 0.049 - 1
47 Linux  0:00:00  0.131  0.296 0.007 0.055 0.055 - 1
48 Linux  0:00:00  0.131  0.357 0.007 0.045 0.045 - 0
49 FreeBSD  0:00:00  0.000  0.927 0.256 0.498 0.923 28 12
50 unknown  0:00:00  0.000  0.559 0.225 0.461 1.215 183 138
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Report from 21-Apr-2019 04:55 till 22-Apr-2019 04:50

Generated on 22-Apr-2019 05:00

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.