Cf-Railgun

HTTP response header

Header usage statistics

Cf-Railgun response header information and usage statistics.

Websites using header Cf-Railgun 9,094
Percentage of websites that use Cf-Railgun header <0.1%
Total discovered header values 2,730
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 910,090 websites

Distribution by websites popularity

Cf-Railgun detection in the top websites by popularity

Top 10k sites 43 websites
Top 100k sites 279 websites
Top 1m sites 1,641 websites

Websites utilizing Cf-Railgun

List of websites that use Cf-Railgun header

Domain Country Rank Contacts
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
science.sciencemag.org United States of America 1,195
mdpi.com United States of America 1,223
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) 62.51%
direct (waiting for pending WAN connection) 7.49%
0033a77c13 stream 0.000000 0210 57da 0.01%
005082167e stream 0.000000 0210 0dda 0.01%
00668791c4 3.93 0.250359 0030 206c 0.01%
008ecbf2b0 stream 0.000000 0210 206c 0.01%
0098db4696 stream 0.000000 0210 0dda 0.01%
00b0a98828 0.01 0.020655 0030 57da 0.01%
00b1d33fc3 stream 0.000000 0210 e6be 0.01%
00b70a7776 stream 0.000000 0210 e6be 0.01%
00ec7a0fc8 stream 0.000000 0210 206c 0.01%
00f549bdc3 stream 0.000000 0210 206c 0.01%
0151cdbf08 stream 0.000000 0210 0dda 0.01%
0153cd5716 0.00 0.133921 0030 206c 0.01%
01569b98bc stream 0.000000 0210 0dda 0.01%
0168ac97e4 stream 0.000000 0200 e6be 0.01%
0174b6ec7c stream 0.000000 0210 e6be 0.01%
0187049942 stream 0.000000 0210 206c 0.01%
fff1f1b11f 0.01 0.468407 0030 e6be 0.01%
01bb2d0bad stream 0.000000 0210 206c 0.01%