Websites using header Alternate-Protocol | 618 |
Percentage of websites that use Alternate-Protocol header | <0.1% |
Total discovered header values | 19 |
Header uses directives | No |
Header values are unique or random | No |
Most popular in the country | ![]() |
Top 10k sites | 2 websites |
Top 100k sites | 13 websites |
Top 1m sites | 96 websites |
Domain | Country | Rank | Contacts |
---|---|---|---|
|
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2,211 | |
|
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9,338 | |
|
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14,053 | |
|
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14,053 | |
|
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15,117 | |
|
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33,086 |
Header value | Value prevalence |
---|---|
443:npn-spdy/3 | 44.98% |
443:npn-spdy/2 | 36.08% |
443:npn-spdy/3.1 | 7.12% |
443:npn-http/2 | 2.43% |
443:npn-http2/3 | 1.62% |
443:npn-spdy/4 | 1.62% |
443:h2 | 0.97% |
443:npn-spdy/2, 443:spdy/2 | 0.97% |
443:quic | 0.97% |
443:npn-spdy/3,443:npn-spdy/2 | 0.81% |
:npn-spdy/2 | 0.49% |
443:npn-http2/2 | 0.49% |
443:npn-h2 | 0.32% |
80:quic | 0.32% |
2015:quic | 0.16% |
443:HTTP/2 | 0.16% |
443:npn-spdy/2,443:npn-spdy/3 | 0.16% |
443:quic,p=1 | 0.16% |
443:spdy/3.1 | 0.16% |