Cf-Railgun

HTTP response header

Header usage statistics

Cf-Railgun response header information and usage statistics.

Websites using header Cf-Railgun 9,016
Percentage of websites that use Cf-Railgun header <0.1%
Total discovered header values 2,961
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Connected technologies

Technologies that utilize the header

CloudFlare, category Content Delivery Networks, total 848,328 websites

Distribution by websites popularity

Cf-Railgun detection in the top websites by popularity

Top 10k sites 49 websites
Top 100k sites 277 websites
Top 1m sites 1,612 websites

Websites utilizing Cf-Railgun

List of websites that use Cf-Railgun header

Domain Country Rank Contacts
change.org United States of America 189
www.change.org United States of America 189
bible.com United States of America 726
www.bible.com United States of America 726
www.pnas.org United States of America 916
www.bmj.com United States of America 1,061
See full domain list

Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Cf-Railgun header values

Header value Value prevalence
direct (starting new WAN connection) 59.46%
direct (waiting for pending WAN connection) 7.72%
000888da3f stream 0.000000 0210 e6be 0.01%
002155f7c4 stream 0.000000 0210 e6be 0.01%
005e246137 stream 0.000000 0210 0dda 0.01%
00705cb1f3 stream 0.000000 0030 e6be 0.01%
00a702dba2 stream 0.000000 0310 e6be 0.01%
00b1d33fc3 stream 0.000000 0210 e6be 0.01%
00bae32632 stream 0.000000 0030 0dda 0.01%
00f360fe8a stream 0.000000 0210 e6be 0.01%
00f71593ac stream 0.000000 0210 e6be 0.01%
0117b006b8 stream 0.000000 0200 57da 0.01%
0158b20468 stream 0.000000 0210 e6be 0.01%
015a912235 stream 0.000000 0200 0dda 0.01%
0188a31060 stream 0.000000 0210 e6be 0.01%
018b8a58b9 0.04 0.231559 0030 e6be 0.01%
019f64f2ac stream 0.000000 0210 e6be 0.01%
01b00c8882 0.37 0.192484 0030 e6be 0.01%
fffdc6e466 0.18 0.147856 0030 57da 0.01%
01b346b5a1 52.10 0.158348 0030 57da 0.01%