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 Linux  23:47:45  100.000  - - - - - -
2 Linux  23:45:00  100.000  - - - - - -
3 Linux  23:45:00  100.000  - - - - - -
4 Linux  23:45:00  100.000  - - - - - -
5 unknown  23:45:00  100.000  - - - - - -
6 Linux  23:45:00  100.000  - - - - - -
7 Linux  23:45:00  100.000  - - - - - -
8 F5 BIG-IP  23:39:16  100.000  - - - - - -
9 F5 BIG-IP  23:39:15  100.000  - - - - - -
10 F5 BIG-IP  23:39:13  100.000  - - - - - -
11 Windows Server 2003  23:39:12  100.000  - - - - - -
12 Linux  23:39:12  100.000  - - - - - -
13 Linux  23:39:11  100.000  - - - - - -
14 Linux  23:38:50  100.000  - - - - - -
15 Windows 2000  23:38:50  100.000  - - - - - -
16 unknown  23:38:33  100.000  - - - - - -
17 F5 BIG-IP  23:38:33  100.000  - - - - - -
18 unknown  4:05:48  58.234  0.262 0.076 0.152 11.853 769 8995
19 F5 BIG-IP  1:35:44  52.246  0.255 0.083 0.168 0.252 109 9
20 F5 BIG-IP  0:00:00  29.730  0.488 0.270 0.583 0.583 - 0
21 F5 BIG-IP  0:00:00  27.096  0.477 0.327 0.664 0.671 514 4
22 Linux  0:00:00  22.072  0.413 0.276 0.497 0.497 65973 2
23 F5 BIG-IP  0:00:00  15.719  0.561 0.097 0.201 0.300 63 6
24 unknown  0:00:00  7.934  0.935 0.358 0.720 3.636 48 139
25 F5 BIG-IP  0:52:27  5.389  0.519 0.211 0.424 1.279 120 102
26 F5 BIG-IP  0:37:27  4.341  0.530 0.199 0.400 1.199 128 102
27 F5 BIG-IP  0:00:00  2.096  0.404 0.106 0.215 0.215 - 1
28 unknown  0:00:00  1.796  1.353 0.396 0.738 0.745 - 1
29 unknown  0:00:00  1.796  1.233 0.355 0.697 0.705 - 1
30 unknown  0:00:00  1.647  1.014 0.462 0.821 0.826 - 1
31 Linux  0:00:00  0.749  0.746 0.295 0.584 0.584 - 1
32 Linux  0:00:00  0.300  0.353 0.005 0.080 0.080 - 0
33 Windows Server 2003  0:00:00  0.299  0.297 0.106 0.214 2.400 128 279
34 Linux  0:00:00  0.299  0.251 0.005 0.125 0.125 - 1
35 Linux  0:00:00  0.150  0.539 0.222 0.456 0.456 2732 2
36 Linux  0:00:00  0.150  0.657 0.008 0.047 0.047 66261 3
37 Linux  0:00:00  0.150  0.248 0.005 0.063 0.063 - 1
38 Linux  0:00:00  0.149  0.352 0.005 0.038 0.038 - 1
39 Linux  0:00:00  0.149  0.365 0.005 0.050 0.050 - 0
40 FreeBSD  0:00:00  0.000  0.955 0.245 0.484 0.827 32 11
41 unknown  0:00:00  0.000  0.537 0.240 0.458 0.458 - 1
42 unknown  0:00:00  0.000  0.597 0.233 0.479 1.037 183 102
43 Linux  0:00:00  0.000  0.511 0.209 0.420 0.420 - 1
44 F5 BIG-IP  0:00:00  0.000  0.488 0.188 0.378 0.378 - 0
45 Linux  0:00:00  0.000  0.806 0.186 0.377 0.377 - 1
46 F5 BIG-IP  0:00:00  0.000  0.718 0.186 0.371 0.371 - 1
47 F5 BIG-IP  0:00:00  0.000  0.717 0.184 0.369 0.369 - 0
48 Solaris 9/10  0:00:00  0.000  0.808 0.167 0.335 0.335 - 0
49 Linux  0:00:00  0.000  0.348 0.136 0.273 0.273 - 1
50 Linux  0:00:00  0.000  0.173 0.132 0.263 0.263 20964 1
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Report from 17-Jun-2019 03:52 till 18-Jun-2019 03:47

Generated on 18-Jun-2019 03:54

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 and Ireland/Amazon. 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.