Alternate-Protocol

HTTP response header

Header usage statistics

Alternate-Protocol response header information and usage statistics.

Websites using header Alternate-Protocol2,834
Percentage of websites that use Alternate-Protocol header<0.1%
Total discovered header values27
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country DE

Alternate-Protocol Directives

Alternate-Protocol directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Distribution by websites popularity

Alternate-Protocol detection in the top websites by popularity

Top 10k sites1 websites
Top 100k sites13 websites
Top 1m sites142 websites

Websites utilizing Alternate-Protocol

List of websites that use Alternate-Protocol header

DomainCountryRankContacts
www.coingecko.com US9,732
3dissue.com US20,556
macstories.net US36,181
exali.de DE42,673
www.exali.de DE42,673
splicky.com DE45,553
See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Alternate-Protocol header values

Header valueValue prevalence
443:npn-spdy/341.88%
443:npn-spdy/222.48%
443:npn-spdy/3.111.71%
443:npn-spdy/47.55%
443:npn-http/25.26%
443:npn-http2/32.33%
443:h22.12%
443:quic1.48%
443:npn-spdy/2, 443:spdy/21.38%
443:npn-spdy/3,443:npn-spdy/21.34%
443:npn-http2/20.85%
443:npn-spdy/2,443:npn-spdy/30.60%
:npn-spdy/20.28%
443:npn-h20.11%
80:quic0.07%
443:http20.07%
443:npm-spdy/30.07%
443:npn-/20.07%
443:npn-http220.07%
443:HTTP/20.04%