HTTP response header

Header usage statistics

X-Whom response header information and usage statistics.

Websites using header X-Whom 7,507
Percentage of websites that use X-Whom header <0.1%
Total discovered header values 497
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

X-Whom detection in the top websites by popularity

Top 10k sites 13 websites
Top 100k sites 52 websites
Top 1m sites 639 websites

Websites utilizing X-Whom

List of websites that use X-Whom header

Domain Country Rank Contacts
video.fc2.com United States of America 3,191
cart.fc2.com United States of America 4,451
contents.fc2.com United States of America 4,528
bbs.fc2.com United States of America 4,622
admin.blog.fc2.com United States of America 5,221
fc2support.blog.fc2.com United States of America 5,778
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-Whom header values

Header value Value prevalence
prod-core-www2 6.34%
prod-core-www1 3.29%
f1010 2.89%
f1007 2.78%
f1011 2.77%
f1004 2.70%
f1015 2.61%
f1012 2.61%
f1013 2.60%
f1009 2.60%
f1019 2.60%
f1016 2.54%
f1006 2.52%
f1014 2.49%
f1020 2.48%
f1017 2.38%
f1021 2.37%
f1018 2.37%
f1005 2.36%
f1002 2.33%