HTTP response header

The Via general header is added by proxies both forward and reverse proxies and can appear in the request headers and the response headers. It is used for tracking message forwards avoiding request loops and identifying the protocol capabilities of senders along the request/response chain

Header usage statistics

x-via response header information and usage statistics.

Websites using header x-via 113,181
Percentage of websites that use x-via header 0.21%
Total discovered header values 6,394
Header uses directives No
Header values are unique or random No
Most popular in the country United Kingdom

Connected technologies

Technologies that utilize the header

Cdn Cache Server, category Content Delivery Networks, total 1,009 websites

Distribution by websites popularity

x-via detection in the top websites by popularity

Top 10k sites 20 websites
Top 100k sites 140 websites
Top 1m sites 2,766 websites

Websites utilizing x-via

List of websites that use x-via header

Domain Country Rank Contacts
slack.com United States of America 173
rollingstone.com United States of America 175
www.rollingstone.com United States of America 175
www.opera.com United States of America 186
join.slack.com United States of America 316
euronews.com Luxembourg 1,587
See full domain list
Flat price per the report, subscription is not required.

Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common x-via header values

Header value Value prevalence
LAX1 29.79%
LHR3 13.54%
LHR4 13.25%
LHR1 13.16%
LHR2 13.12%
L4LB-150 1.69%
L4LB-151 1.67%
SWS Accelerator - KPE1 0.63%
1.0 PSmglsjLAX2kb133:5 (Cdn Cache Server V2.0) 0.46%
1.1 PS-FOC-01tmR97:0 (Cdn Cache Server V2.0), 1.1 PSmgasbIAD1ak79:2 (Cdn Cache Server V2.0) 0.24%
1.1 xaWGjg588 (random:490489 Fikker/Webcache/3.8.2) 0.18%
DFW1 0.17%
1.1 ITuc4U9ssU (random:556488 HKCN2/3.8.1) 0.17%
prod-diy-wn2-c1 0.14%
1.0 PSmgasbIAD1ak79:2 (Cdn Cache Server V2.0) 0.14%
1.1 PSmgytldATL1ig48:5 (Cdn Cache Server V2.0), 1.1 PS-ORD-017Wp176:11 (Cdn Cache Server V2.0) 0.13%
prod-diy-wn3-c1 0.13%
prod-diy-wn4-c1 0.12%
NCache 0.11%
prod-diy-wn1-c1 0.11%