Threat Level: green Handler on Duty: Guy Bruneau

SANS ISC: HTTP Header Usage Statistics HTTP Header Usage Statistics


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This is a continuation of work started by Brough Davis as part of his software security project for his Masters in Information Security Engineering. The main goal of this project is to find how many sites use security relevant headers, like for example the X-XSS-Protection or X-Frame-Options headers.

Below you will find a table/histogram showing how many times we found each header (security relevant or not). We access the index page of each site using a "head" request. The list of sites is derived from Alexa's Top 1 Million sites. We try to poll as many sites as possible each day.

As we collect more data, we will plot changes over time.



All Headers Active In The Past Month
Header Popularity
Set-Cookie
Content-Type
Date
Connection
Server
Cache-Control
Vary
X-Frame-Options
Expires
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Accept-CH
CF-Cache-Status
ETag
Expect-CT
X-XSS-Protection
Accept-Ranges
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Alt-Svc
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
X-Amz-Cf-Pop
Content-Language
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
X-Download-Options
X-Request-Id
X-Timer
X-Xss-Protection
Access-Control-Allow-Headers
Access-Control-Allow-Methods
CF-Ray
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
Access-Control-Allow-Credentials
X-DNS-Prefetch-Control
Content-Security-Policy-Report-Only
Accept-CH-Lifetime
X-AspNet-Version
X-Runtime
Accept-Ch
Permissions-Policy
Server-Timing
X-Drupal-Cache
X-Generator
X-Envoy-Upstream-Service-Time
X-Cache-Status
X-Cacheable
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
X-Ua-Compatible
Timing-Allow-Origin
X-CONTENT-TYPE-OPTIONS
Feature-Policy
X-Content-Security-Policy
Xkey
Upgrade
Access-Control-Expose-Headers
X-CDN
X-XSS-PROTECTION
Content-Encoding
Status
X-AspNetMvc-Version
Access-Control-Max-Age
X-Amz-Request-Id
Host-Header
X-Amz-Id-2
X-Age
Request-Context
Cf-Edge-Cache
X-Backend
X-Request-ID
X-Robots-Tag
X-Hacker
Keep-Alive
X-Via
Cf-Apo-Via
X-Amz-Version-Id
X-Turbo-Charged-By
X-Rq
X-AH-Environment
X-Vhost
X-Cache-Group
X-Server
X-Dispatcher
X-Proxy-Cache
X-Ws-Request-Id
EagleId
CONTENT-SECURITY-POLICY
X-UA-Device
X-Varnish-Cache
Pantheon-Trace-Id
Grace
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Litespeed-Cache
X-OneAgent-JS-Injection
X-Server-Powered-By
X-Pingback
Allow
X-Page-Speed
X-WebKit-CSP
X-Dns-Prefetch-Control
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-FTR-Request-ID
X-Node
X-Device
X-Cache-Lookup
X-Server-Id
EagleEye-TraceId
X-Host
X-Backend-Server
X-Country-Code
Surrogate-Control
X-Cloud-Trace-Context
X-Readtime
X-Akam-SW-Version
Cf-Railgun
X-Ruxit-JS-Agent
Accept-Ch-Lifetime
X-HW
X-Response-Time
Cache-Tag
P3p
Cf-Request-Id
X-Amz-Server-Side-Encryption
X-LiteSpeed-Cache
X-Ua-Device
Content-Location
Cross-Origin-Opener-Policy
X-Rack-Cache
X-Nginx-Upstream-Cache-Status
X-Nginx-Cache-Status
X-Trace
Service-Worker-Allowed
Request-Id
X-Content-Type
X-TraceId
X-Application-Context
Fastly-Restarts
X-Times
X-TtlSet
X-Vname
X-PC
X-Nf-Request-Id
X-Clacks-Overhead
Rating
X-Cnection
X-Mcache
X-Edge
X-Midtier
X-Vcap-Request-Id
X-Browser-Type
X-Country-Code-Real
X-FTR-Cache-Status
X-FTR-Backend
X-FTR-Balancer
X-FTR-Backend-Server
X-FTR-Expires
X-ESI
Origin-Trial
Edge-Control
X-Cache-TTL
X-Element-Page-Cache
X-D2id
X-FastCGI-Cache
Surrogate-Key
X-Oneagent-Js-Injection
X-Exp-Id
X-Cdn-Fetch
X-NWS-LOG-UUID
X-Powered-By-Plesk
X-Exp-Variant
X-Kinja-Server
X-GoogleNews-Bot
X-Kinja-Revision
X-Kinja-Build
X-Kinja
X-Country
X-Abt-Application-Version
X-Ac
X-Navigation-Version
X-Upstream
Verso
X-Mod-Pagespeed
X-ORACLE-DMS-RID
X-B3-TraceId
X-Amz-Rid
X-Url
Akamai-GRN
Nginx-Cache
X-Language
Pinterest-Version
X-Pinterest-Rid
Pinterest-Generated-By
X-GitHub-Request-Id
Pagespeed
X-Sol
Display
X-Middleton-Display
X-ECACHE
X-Erf-Bev-Bev
X-Server-Lifecycle-Phase
X-PDP-UNCACHING-HASH
X-Instrumentation
X-Erf-Bev-Bev-Is-Generated
X-Kraken-Loop-Name
S
X-Envoy-Decorator-Operation
X-Middleton-Response
X-MS-InvokeApp
Response
AR-Request-ID
AR-ATIME
AR-PoweredBy
Edge-Cache-Tag
X-Ratelimit-Limit
X-Goog-Hash
X-Distributor
X-Ser
X-Resp-Is-Stale
SPRequestGuid
SPIisLatency
SPRequestDuration
X-SharePointHealthScore
X-Kinsta-Cache
X-Edge-Location-Klb
X-ARC
X-Ttl
X-Amzn-Trace-Id
Access-Control-Request-Method
X-Ruxit-Js-Agent
X-NGENIX-Cache
X-Client-IP
X-Dw-Request-Base-Id
Front-End-Https
X-Shield-Request-Id
X-Content-Digest
X-Ezoic-Cdn
RTSS
X-Recruiting
X-Cache-Key
X-Varnish-TTL
X-T
Cache-Status
X-Version
X-Mg-S
X-Powered-CMS
Public-Key-Pins
TP-Cache
X-MSEdge-Ref
Fastcgi-Cache
X-HS-Hub-Id
X-HS-Content-Id
X-HS-Cache-Config
X-Accel-Expires
X-Ismobilevalue
Arr-Disable-Session-Affinity
X-Daa-Tunnel
AR-CACHE
Cache-Tags
X-Cached
X-Request-Device-Id
X-Cluster-Name
Realpath
X-Correlation-Id
X-Request-Received
X-Request-Processing-Time
X-Id
Content-MD5
X-Content-Security-Policy-Report-Only
X-HS-Combine-CSS
X-Forwarded-For
Ar-SID
YJS-ID
X-Fastly-Request-ID
X-Ua-Browser
Payment
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
X-Meli-Trace-Site
X-DIS-Request-ID
X-Meli-Trace-Bu
X-Meli-Trace-Platform
X-Newrelic-App-Data
X-Amz-Replication-Status
X-HP-Webp
X-HP-Trace-Id
X-Jurisdiction
X-Cambria-Cache-Control
X-Azure-Ref
X-COUNTRY
X-GUploader-UploadID
X-Xrds-Location
X-RateLimit-Remaining
X-HS-Prerendered
X-HS-CF-Cache-Status
X-Webkit-Csp
Content-Disposition
X-Ratelimit-Remaining
X-Server-Name
Count-Hit
X-Protected-By
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Ratelimit-Reset
X-Activity-Id
X-Px
X-AppVersion
X-Unique-Id
X-Az
X-Origin-Server
MicrosoftSharePointTeamServices
X-Page-Id
X-ORACLE-DMS-ECID
X-Rid
X-Logged-In
X-Amz-Meta-S3cmd-Attrs
X-Git-Hash
Cleartype
Cross-Origin-Resource-Policy
X-SERVER-NAME
X-FB-Debug
X-VARITI-CCR
X-Request-Handler-Origin-Region
Cross-Origin-Embedder-Policy
Accept-Charset
X-Proxy
X-Microsite
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Www-Served-By
X-TTL
X-Load-Cache
Version
X-TEC-API-ORIGIN
X-LLID
X-TEC-API-VERSION
X-TEC-API-ROOT
X-Goog-Metageneration
X-Geo-Country
X-Forwarded-Proto
X-Template
X-Varnish-Backend
X-CST
X-PressLabs-Stats
X-Upgrade-Enabled
Server-Node
X-Hits
Server-Name
X-B3-Sampled
X-Hostname
X-WebKit-CSP-Report-Only
X-App-Server
X-Content-Options
Healthy
X-Frontend
Access-Control-Allow-Method
Viewport
X-Varnish-Grace
Section-Io-Cache
X-Fb-Rlafr
X-Device-Type
X-Grace
X-TT
Fastly-SIE
Fastly-SWR
Alternate-Protocol
X-B
X-Varnish-Server
X-B3-TraceId-Primal
MRF-Tech
Mrf-Cache-Status
X-Status
X-Request-Guid
X-Goog-Stored-Content-Length
X-Goog-Generation
TCN
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-Contextid
DC
Upgrade-Insecure-Requests
Retry-After
X-Magnolia-Registration
AKAMAI-GRN
Host
X-Amzn-Remapped-Content-Length
X-EdgeConnect-Cache-Status
X-Requestid
X-Cache-Control
MS-Author-Via
X-Cache-Age
X-App-Version
Amp-Access-Control-Allow-Source-Origin
X-CSRF-Token
X-Tt-Trace-Host
Frame-Options
X-Tt-Trace-Tag
X-Origin-TTL
X-Buckets
X-Debug
X-Varnish-Ttl
X-Origin-CC
X-Revision
X-Type
X-Hl-Ver
X-Response-Served-From
X-Original-Request-Id
X-RemovedCookies
X-ProcessESI
SD-X-WS
X-Mobile
X-Oracle-Dms-Ecid
VIX-Pulpo-Node
X-ServerID
VIX-Pulpo-Upstream-Status
X-UUID
X-INCAP-ABP
X-Instance
X-Backend-Name
X-G
X-Seen-By
X-Is-Bot
X-Tumblr-Pixel-0
X-Tumblr-Pixel
X-Cache-Status-Check
X-Tumblr-Pixel-1
X-Tumblr-User
X-Rendered-As
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-NYM-Debug-Backend
X-N
X-Adobe-Content
X-Adobe-Loc
X-Akamai-Edgescape
Cross-Origin-Embedder-Policy-Report-Only
Cross-Origin-Opener-Policy-Report-Only
X-Debug-IsPreview
X-Framework
Section-Io-Id
Access-Control-Request-Headers
X-Debug-IsConnected
X-AB
Ms-Operation-Id
X-Akamai-Request-ID2
X-WP-CF-Super-Cache
X-WP-CF-Super-Cache-Cache-Control
MS-CV
X-RTag
X-Content-Powered-By
X-Mg-Request-UUID
X-Trace-Id
X-Lambda-Id
NGB
X-Storage
X-Server-W
X-RM-Cache-TTL
X-Vcl-Version
Charset
X-ECache
X-Dc
Cache
Webserver
X-DataDome
Filterid
X-Yandex-Req-Id
Paypal-Debug-Id
X-Request-Bu
Accept-Language
X-Request-Site
X-B3-SpanId
X-Request-Platform
Refresh
X-Cache-Time
X-URL
X-VC-Cache
X-Cache-Hit
X-Tec-Api-Root
SRV
X-Ms-Request-Id
X-Tec-Api-Origin
X-HITS
X-Ms-Version
Onion-Location
X-Tec-Api-Version
X-Time
X-Node-Name
Xet-Cookie
X-User-Agent
X-F-Cache
X-Region
X-Real-IP
YJS-CacheStatus
X-CCDN-Origin-Time
X-Hcs-Proxy-Type
X-CCDN-CacheTTL
Liferay-Portal
CDN-RequestId
Priority
X-HTML-Minification-Powered-By
X-Fastcgi-Cache
GEO-INFO
X-Environment-Context
X-Mode
X-L-Path
X-IPS-LoggedIn
X-LB-Cache
X-ProxyCache-Key
X-Timing-Wait
X-Service
X-Pass-Why
Cross-Origin-Window-Policy
X-ProxyCache-Status
Selected-Fe
X-BYPASS-REASON
X-Proxy-Build
X-Datadog-Parent-Id
X-Rule
X-Datadog-Sampled
X-Datadog-Trace-Id
X-Rocket-Nginx-Serving-Static
X-Datadog-Sampling-Priority
X-SaId
Protected
X-Cache-Expired-At
X-Rn-Rsrv
X-UPSTREAM-Address
X-Drupal-Cache-Tags
X-JoinUs
Backend
X-Origin
X-Rewrite-Enabled
Meta-Geo
X-Tb
Country
X-VCT
X-Is-Supported-Browser
X-Cacheable-TTL
X-Adobe-Source
X-Browser-Name
X-Is-Modern-Browser
X-Is-Desktop
X-Is-Mobile
X-Handled-By
X-Wix-Request-Id
X-Is-Mobile-Only
X-Whom
X-Geo-Region
X-Tcp-Rtt
X-Origin-Cache
X-Is-Tablet
X-VC
X-Provided-By
Mn-Server-Ip
Apigw-Requestid
X-Generation-Time
X-Web-Node
X-Loop
Property-Id
X-Vcache
X-WP-CF-Super-Cache-Active
ServerID
TWC-Connection-Speed
X-Routing-Service
X-RCS-CacheZone
X-Cloudmap
X-Tncms
X-Extlb
X-Connection-Hash
X-Zipkin-Id
X-Detected-As
X-FB-TRIP-ID
Expiry
Fastcgi-Useragent
X-Origin-Hint
X-Origin-Date
TWC-Device-Class
X-Proxied
X-Proxy-Cache-Info
Webcakes-App-Version
Webcakes-App-Name
Web-Mar-Node
X-Varnish-Beresp-Grace
Webcakes-Region
X-Servername
X-RateLimit-Remaining-Second
X-RateLimit-Limit-Second
Uber-Trace-Id
Url
TWC-GeoIP-LatLong
TWC-GeoIP-DMA
TWC-GeoIP-Country
TWC-GeoIP-City
X-Httpd
TWC-GeoIP-Region
TWC-Privacy
TWC-Locale-Group
X-Cdn-Origin
X-Cache-Action
Atl-Traceid
X-Locale
X-Alternate-Cache-Key
X-Auth-Group-Type
X-Cms-Context
X-Logging-Id
ServedBy
OT-Force-Account-Verify
X-Director
DB-Nickname
X-Cluster
X-Fetched-On
X-Hosted-By
X-Hit
LB
X-Storefront-Renderer-Rendered
X-Tumblr-Pixel-2
X-Tumblr-Pixel-3
X-App-Environment
X-Shopify-Stage
X-Skip-Cache
X-Redis-Cache
X-Soup
X-Forwarded-Host
X-MP-GENERATED-AT
X-Format
X-Urbn-Context-Path
X-Debug-Info
X-Api-Version
X-Scope-Id
X-Endurance-Cache-Level
Cache-Hits
X-Served-From
X-SayCDN-TTL
X-Say-TTL
X-Say-Cacheable
Environment
X-Edge-Location
X-Urbn-Site-Id
X-NewRelic-App-Data
X-FW-Server
X-Restarts
X-FW-Serve
X-FW-Hash
X-FW-Dynamic
X-FW-Static
X-Cluster-Node
X-FW-Version
X-FW-Type
Locale
X-Cache-Host
X-Labrador-Cache-Channel
X-PHP-Host
X-Drupal-Cache-Contexts
X-S
X-Mly-Id
X-Cache-Debug
Filters
X-Server-ID
X-IPLB-Instance
X-IPLB-Request-ID
Node
X-R9-Blue-Green-Version
X-XRDS-Location
Front
X-Platform
X-GEO
AR-SID
X-CDN-Cache-Status
X-CLOUD-TRACE-CONTEXT
X-No-Session
X-Optimistic-Header
X-CDN-Forward
Countrycode
X-Tt-Logid
Xserver
X-UA
X-Varnish-Age
X-Sorting-Hat-ShopId
WPO-Cache-Status
X-ShopId
X-ShardId
X-Sorting-Hat-PodId
X-Fastly-Request-Id
X-Varnish-Beresp-Ttl
X-Lagoon
Cache-Tv-Group
X-WP-CF-Super-Cache-Cookies-Bypass
X-Varnish-Cache-Hits
X-Presslabs-Stats
X-Generated-By
X-Wormhole-Sdk
X-B3-Traceid
X-SRV
X-B-Cache
X-NWS-UUID-VERIFY
X-Signature
X-CACHE-AGE
Referer-Policy
X-Client-Ip
X-Webstats-RespID
X-Azure-Ref-OriginShield
AMP-Access-Control-Allow-Source-Origin
X-Site-Version
From-Origin
X-Ua
Request-ID
Cache-Provider
X-Cache-Operation
X-IsAdmin
X-PHP-Backend
X-Cache-Rule
X-Accel-Version
X-VWS-Id
X-Worker
X-NF-Request-ID
X-AWS-Id
X-Auto-Login
X-LJ-Flow-ID
Location
X-TA-CDN-Provider
Fl-Custom-Application
Expect-Staple
X-VC-TTL
X-SRCache-Key
X-Bc-Bl
X-Clientip
X-Upstream-Ct
X-Tx-Id
X-Upstream-Ht
X-Conf
X-Content-Age
X-D
Sid
X-A-Wwc
Pragrma
Origin
Candidate-Md5Url
Redirect-Candidate
Rendered-Blocks
We-Hiring
Sslversion
Ngx.Var.Host
N-Cache
Host-ID
DCR-Processing-Time-Ms
Lang
Mail-Subject
Meta-Geo-Continent
MD5-Digest
Origin-Agent-Cluster
S-Rt
X-B-Cookie
X-Application
X-BCube-Filmed-By
X-Tb-Optimization-Total-Bytes-Saved
WPO-Cache-Message
X-Bl-Debug
X-ApacheServer
X-Aed
X-A-Ccd
X-A
X-A-Dam
X-A-Dcw
Source
X-A-Dgt
X-Cache-NE
X-Destination
X-GeoCode
X-Vdms-Version
X-External-Request-Id
X-PERF
X-GeoCountry
X-ScT
X-Ig-Origin-Region
X-Ig-Push-State
X-Loc
X-Vtex-Remote-Cache
X-Org
X-Server-IP
X-S-Cookie
X-Ec-GeoHdr
X-Rojux
X-Ec-Fail
X-Developer
DCR-Decision-By
Xc-Version
X-Litespeed-Cache-Control
X-Xfnlog-Site
Store-Cloud-Cache
ServerName
X-SIPLIST1
RNT-Time
Time-Cloud-Cache
Wxu-Next-Region
X-SD-PageType
X-Section
Wxu-Next-Hostname
RNT-Machine
X-Sigma-Backend
Web-Mar-Region
Wxu-Next-Commit
X-Sigma
X-Varnish-Authentication
IsBot
L5d-Success-Class
X-VG-WebCache
Log-Origin
Ha-Gx-Prefs
Gh-Request-Id
X-ND-Cache
Fastly-SSL
Gannett-Cam-Experience-Id
X-VG-TLSProxy
X-Vary-Devices
Powered-By
X-V-Cache
X-Slack-Shared-Secret-Outcome
Origin-Site
X-Varnish-Beresp-Status
X-Varnish-Hostname
X-Varnish-Director
Odigeo-Trace-Id
X-Slack-Backend
X-Origin-Expires
X-Forwarded-Site
X-Cms-Device
X-Fmm-Version
X-Contensis-Viewer-Groups
X-CGP
X-From
X-Cache-Aspx
X-Cache-FS-Status
X-Gamma-Serve
X-FC-Vary-Parameters
X-Core-Value
X-Ee-Origin
X-Ee-Generated-By
X-CUA
X-Csrf-Jwt
X-Ee-Request-Date
X-Eu-Site
X-Epic-Correlation-Id
X-Ee-Request-Id
X-Bug-Bounty
X-GeoIP-City
X-Old-Content-Length
X-Node-Id
X-Mvc-Supplant-Cachable
X-Depends
X-PAYTM-SRV-ID
X-Rocket-Build-Number
X-Req
X-Policy
X-Access
X-Micro-Cache
X-GoCache-CacheStatus
X-GeoIP-Region-Code
X-GeoIP-Country-Code
X-Hash
X-HS-Content-Campaign-Id
X-Aicache-OS
X-AK-Request-ID
X-Internal-TTL
X-Save-Cache
X-Action
CDN-PullZone
CDN-EdgeStorageId
Cluster
CDN-CachedAt
CDN-RequestCountryCode
CDN-RequestPullCode
CDN-Uid
CDN-RequestPullSuccess
Cdnsip
CDN-Cache
Canary
X-Sucuri-Cache
CF-IPCountry
Cdncip
Apple-News-Services-Handled
Apple-News-Services-Request-Url
Apple-News-Services-Host
Apple-News-Services-Parsed-Url
X-Parent-Response-Time
X-Reqid
X-NGINX-Cache
X-Frame-Option
X-Gdpr
X-Gen-Mode
X-FORWARDED-FOR
Content-Script-Type
X-Dispatcher-Server
X-Ec-Custom-Error
X-Generated-On
X-HN
X-Ion-Hop
X-Jungle-Id
X-Level-Front-Cache
X-Ion-Healthy
X-Human
X-Hnp-Log
X-Air-Pt
X-DefHash
X-DefElseHash
X-App-Name
Content-Style-Type
X-Backend-Instance
X-Amz-Storage-Class
X-Akamai-Device-Characteristics
X-Accel-Expires-Debug
X-Acquia-Purge-Cdn-Unconfigured
X-BBC-Edge-Cache-Status
X-Bip
X-Date
X-Debug-Cache-Fetch
X-Debug-Cache-Store
X-Content-Length
X-Cs
X-Block-Status
X-Cache-Date
X-Men
X-Mvc-Supplant-OutputCached
X-Varnish-CookieINHashed-On
X-Varnish-Remaining-TTL
X-VarnishDD-TTL
X-Varnish-CookieHashed-On
X-Uri
X-UA-Device-Type
X-Up
X-Via-Fastly
X-Viewer-Country
Country-Code
X-CacheTTL
X-Fastly-Backend
X-Wikidot-Static-Cache
X-Wikidot-Backend
X-Vmg-Version
X-We-Are-Hiring
X-Thinkindot-L3
X-Thinkindot-L1
X-Proto
X-Pubstack
X-Region-Sid
X-Path
X-Origin-Time
X-NMSegId
X-Op-Id-All
X-Render-Time
X-Request-URI
X-SVT-ORM-VERSION
X-Thanos
X-SVT-ORM-RULES
X-Sn-Servicetimems
X-SB
X-Shield-Cache-Expires
X-AB-Test
X-Nyt-Route
Azure-Version
Release
User-Cache-Control
Azure-SlotName
Cache-Contol
Pics-Label
Origin-CC
Origin-EX
Vix-Hermes-Req-Id
PFcat
Cmstype
Req-Svc-Chain
Server-Host
TDXMobile
Azure-InstanceId
Cmsid
Azure-RegionName
Azure-SiteName
Thinkindot-CacheControl-Type
RewriteTeamHook
RewriteTestHook
Thinkindot-CacheControl
DSUID
V-Age
NM-Fastcgi-Cache
CDCHOST
L
CloudFront-Viewer-Country
Fastly-Backend-Name
Machine
Nord-Request-ID
Tube-Got-Eval
Tube-Got-Results
Tube-Return
Tube-Get-Contents
X-Location
Cdn-Host
Fastly-GeoIP-CountryCode
X-Vercel-Cache
X-Moov-T
X-Moov-Xdn-Caching-Status
X-DPWN-IS-SECURE
X-Esi-Check
X-Moov-Xdn-Version
Cdn-Request-Time
Producers
X-Gzip
X-B3-Trace-ID
X-LSADC-Cache
X-Cache-Id
CacheControlHeader
X-Vercel-Id
X-ZONE
Platform
Click-Count-Error
X-Edge-Server
X-Proxied-Request
C-Via
Click-Count-Action-Start
X-ElasticPress-Query
X-Sucuri-ID
X-Origin-Response-Time
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Cs
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