Threat Level: green Handler on Duty: Didier Stevens

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
Expires
X-Frame-Options
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Accept-Ranges
Expect-CT
Pragma
X-XSS-Protection
CF-RAY
X-Powered-By
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
X-UA-Compatible
P3P
X-Xss-Protection
X-Served-By
X-Download-Options
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
Access-Control-Allow-Credentials
X-Request-ID
X-Request-Id
CF-Ray
X-Permitted-Cross-Domain-Policies
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-DNS-Prefetch-Control
X-Drupal-Cache
X-Check
P3p
X-Cache-Status
X-Generator
X-Cacheable
X-FRAME-OPTIONS
Timing-Allow-Origin
X-Iinfo
X-Envoy-Upstream-Service-Time
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Upgrade
Access-Control-Expose-Headers
Status
X-AspNetMvc-Version
X-CDN
Access-Control-Max-Age
X-Via
Server-Timing
X-UA-Device
X-Robots-Tag
Request-Context
X-Turbo-Charged-By
X-Cache-Group
X-Amz-Request-Id
EagleId
X-Amz-Id-2
X-Backend
Keep-Alive
X-AH-Environment
X-Proxy-Cache
X-Ws-Request-Id
X-Server
X-Ua-Compatible
X-Age
Host-Header
X-Hacker
Cf-Edge-Cache
X-Vhost
X-Server-Powered-By
X-Rq
Allow
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
X-Swift-SaveTime
X-Swift-CacheTime
X-LiteSpeed-Cache
Ali-Swift-Global-Savetime
X-OneAgent-JS-Injection
X-WebKit-CSP
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
Accept-CH
X-Page-Speed
X-Device
Cf-Apo-Via
Cf-Railgun
X-Aws-Lambda-Call-Status
X-Server-Id
X-Host
X-Node
X-Pingback
X-Cache-Spec
X-Nginx-Cache-Status
X-Akam-SW-Version
X-Dns-Prefetch-Control
Surrogate-Control
EagleEye-TraceId
X-Backend-Server
Request-Id
X-Cache-Lookup
X-Readtime
X-Ruxit-JS-Agent
X-HW
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
X-Cloud-Trace-Context
X-Content-Security-Policy-Report-Only
X-Trace
X-Application-Context
X-Response-Time
Permissions-Policy
X-CST
Accept-CH-Lifetime
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
X-Mod-Pagespeed
Accept-Ch-Lifetime
X-Edge
X-WebKit-CSP-Report-Only
Content-Location
X-Country
X-Content-Type
X-Mcache
X-Clacks-Overhead
X-MS-InvokeApp
Rating
X-Url
X-ECACHE
X-Midtier
X-Amz-Server-Side-Encryption
X-PC
X-TtlSet
X-Vname
X-VARITI-CCR
RTSS
Cache-Tag
X-Vcap-Request-Id
X-D2id
X-Element-Page-Cache
Origin-Trial
Verso
X-Ac
X-Server-Name
X-Exp-Id
X-Cdn-Fetch
X-GoogleNews-Bot
X-Exp-Variant
X-Kinja-Server
X-Kinja
X-Kinja-Revision
X-Kinja-Build
X-Use-Magma
X-Rack-Cache
X-B3-TraceId
X-Varnish-TTL
X-Cnection
X-Cache-TTL
Service-Worker-Allowed
X-Powered-By-Plesk
X-GitHub-Request-Id
X-ESI
Xkey
X-Navigation-Version
X-Abt-Application-Version
X-Client-IP
X-SharePointHealthScore
SPRequestGuid
X-NWS-LOG-UUID
X-Amz-Rid
Edge-Control
X-Ttl
X-Cached
X-Px
X-Litespeed-Cache
X-Mg-S
Arr-Disable-Session-Affinity
X-Instrumentation
X-Browser-Type
X-Erf-Bev-Bev-Is-Generated
X-Kraken-Loop-Name
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev
X-Upstream
SPRequestDuration
SPIisLatency
X-Fastcgi-Cache
X-Cache-Key
X-Correlation-Id
X-Middleton-Display
X-Sol
Pagespeed
Display
Content-MD5
X-Dw-Request-Base-Id
X-SRCache-Fetch-Status
X-SRCache-Store-Status
Access-Control-Request-Method
X-NF-Request-ID
Edge-Cache-Tag
X-Goog-Hash
X-RateLimit-Remaining
X-Daa-Tunnel
Front-End-Https
X-XRDS-Location
X-Country-Code
X-Forwarded-For
Public-Key-Pins
X-Version
AR-ATIME
X-Powered-CMS
AR-SID
AR-Request-ID
AR-CACHE
AR-PoweredBy
X-Id
TCN
X-MSEdge-Ref
X-HP-Webp
X-HP-Trace-Id
X-T
X-Recruiting
X-Jurisdiction
X-Content-Digest
X-Accel-Expires
X-Middleton-Response
Response
X-B3-TraceId-Primal
X-Shield-Request-Id
Mrf-Cache-Status
MRF-Tech
X-Ser
TP-L2-Cache
TP-Cache
Nginx-Cache
X-Webkit-Csp
X-Amzn-Trace-Id
S
X-Request-Received
X-Request-Processing-Time
X-Hits
X-HS-Combine-CSS
X-HS-Content-Id
X-HS-Cache-Config
X-HS-Hub-Id
Server-Node
X-Distributor
Cache-Status
X-Kinsta-Cache
X-Edge-Location-Klb
X-Fastly-Request-ID
MicrosoftSharePointTeamServices
Cache-Tags
X-Grace
Fastcgi-Cache
Alternate-Protocol
Server-Name
Accept-Ch
X-DataDome
X-Protected-By
X-Ruxit-Js-Agent
X-TEC-API-VERSION
X-TEC-API-ROOT
X-TEC-API-ORIGIN
X-Ezoic-Cdn
X-Ratelimit-Limit
X-DIS-Request-ID
X-Origin-Server
X-LB-Cache
X-Ratelimit-Reset
X-Ua-Browser
X-Geo-Country
X-Microsite
X-Request-Handler-Origin-Region
X-Frontend
X-TTL
X-Rid
X-Debug-Info
X-Varnish-Backend
Cross-Origin-Opener-Policy
X-Git-Hash
X-Www-Served-By
Healthy
Filterid
Cleartype
X-Logged-In
X-FB-Debug
X-NGENIX-Cache
X-Forwarded-Proto
Payment
X-Page-Id
X-Load-Cache
X-ASPNET-VERSION
Charset
X-B3-Sampled
X-FastCGI-Cache
Content-Disposition
X-LLID
X-PressLabs-Stats
X-VCache
X-Ratelimit-Remaining
DC
X-Origin-Cache
X-Cluster-Name
X-Hostname
MS-Author-Via
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
X-GUploader-UploadID
X-Goog-Metageneration
Retry-After
X-Upgrade-Enabled
Access-Control-Allow-Method
X-Proxy
Accept-Charset
X-F-Cache
X-AppVersion
X-RateLimit-Limit
X-Activity-Id
X-Az
Cross-Origin-Resource-Policy
Paypal-Debug-Id
X-Type
X-Amz-Replication-Status
X-Signature
X-B-Cache
X-Contextid
X-Revision
X-Azure-Ref
X-Hosted-By
X-Varnish-Server
X-Flags
X-Route-Name
X-Aspnet-Duration-Ms
X-Request-Guid
Viewport
X-Providence-Cookie
X-Is-Crawler
X-Amz-Meta-S3cmd-Attrs
X-TT
X-Oracle-Dms-Rid
X-Seen-By
X-B
X-ORACLE-DMS-RID
X-ORACLE-DMS-ECID
X-Aspnetmvc-Version
X-Wix-Request-Id
X-Oracle-Dms-Ecid
X-App-Environment
X-Whom
X-Fb-Rlafr
X-DynaTrace
Realpath
Amp-Access-Control-Allow-Source-Origin
Surrogate-Key
Referer-Policy
Count-Hit
X-Source
X-Akamai-Edgescape
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Mobile
X-App-Server
X-B3-Traceid
X-Goog-Stored-Content-Encoding
X-Goog-Generation
X-Goog-Stored-Content-Length
X-Goog-Storage-Class
X-Cache-Control
Host
X-EdgeConnect-Cache-Status
X-Oneagent-Js-Injection
X-N
X-HTML-Minification-Powered-By
X-Varnish-Grace
X-Magnolia-Registration
X-Response-Served-From
Version
X-Cache-Rule
X-Tumblr-User
X-Tumblr-Pixel-1
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Original-Request-Id
X-Cache-Time
Refresh
X-Language
X-Varnish-Age
X-UUID
X-Rule
VIX-Pulpo-Upstream-Status
X-Cache-Status-Check
X-RTag
MS-CV
X-Template
VIX-Pulpo-Node
Access-Control-Request-Headers
Section-Io-Cache
X-Cache-Expired-At
Ms-Operation-Id
X-Envoy-Decorator-Operation
SD-X-WS
X-Status
X-FW-Server
X-FW-Static
X-FW-Serve
X-FW-Dynamic
X-Environment-Context
X-Adobe-Loc
X-Framework
X-FW-Type
X-FW-Hash
X-FW-Version
X-Cache-Grace
X-L-Path
X-Jobs
Akamai-GRN
X-Cacheable-TTL
X-Page-View
X-Content-Powered-By
X-ProcessESI
Protected
X-Adobe-Content
X-RemovedCookies
NGB
Url
X-Rendered-As
X-Instance
X-Http-Reason
X-G
GEO-INFO
X-Is-Bot
X-Servername
X-Device-Type
X-NYM-Debug-Backend
X-Backend-Name
SRV
X-User-Agent
X-Akamai-Request-ID2
X-Debug-IsPreview
X-Nginx-Cache
X-Debug-IsConnected
X-Cache-Age
X-CDN-Forward
X-Newrelic-App-Data
X-Drupal-Cache-Contexts
X-Trace-Id
X-Drupal-Cache-Tags
X-Yottaa-Metrics
CDN-RequestId
X-Yottaa-Optimizations
From-Origin
WPO-Cache-Message
WPO-Cache-Status
X-Cache-Hit
X-Tb
X-Region
X-URL
Accept-Language
Country
Front
X-Node-Name
X-Tt-Logid
X-Pinterest-Rid
Pinterest-Version
Pinterest-Generated-By
X-Fastly-Request-Id
X-Real-IP
X-Amz-Apigw-Id
Backend
X-Amzn-RequestId
X-VC-Cache
X-Content-Options
X-TIME
Uber-Trace-Id
X-Mode
Fastly-Drupal-HTML
X-COUNTRY
Fastly-SIE
Fastly-SWR
X-Unique-Id
X-DynaTrace-JS-Agent
Content-Secure-Policy
X-Cache-Operation
X-Tumblr-Pixel-2
X-RN-RSRV
X-Zen-Fury
Filters
Meta-Geo
X-Generation-Time
X-UPSTREAM-Address
X-Rewrite-Enabled
CF-IPCountry
X-Proxy-Cache-Info
X-Amzn-Remapped-Content-Length
Onion-Location
X-Cache-Server
X-Web-Node
Azure-Version
X-Access
Azure-InstanceId
Webserver
X-IPS-LoggedIn
Azure-RegionName
Azure-SlotName
Azure-SiteName
X-Section
X-Format
X-Rocket-Nginx-Serving-Static
Webcakes-Region
Webcakes-App-Version
X-Sql-Count
X-Cms-Context
X-Sucuri-ID
X-Sucuri-Cache
X-Sql-Duration-Ms
X-Soup
X-Origin-Hint
Apigw-Requestid
TWC-GeoIP-LatLong
TWC-Locale-Group
TWC-Privacy
Webcakes-App-Name
X-Locale
X-Say-Cacheable
X-PHP-Backend
X-Server-W
X-Via-Fastly
TWC-Device-Class
X-Ua
X-Varnish-Beresp-Grace
X-Cache-TTL-Remaining
X-Debug
TWC-Connection-Speed
X-Skip-Cache
X-Adobe-Source
X-SayCDN-TTL
X-Say-TTL
TWC-GeoIP-Country
X-Cache-Action
Property-Id
X-Reqid
X-Proxy-Cache-Status
X-Cache-Host
X-IPLB-Request-ID
X-BYPASS-REASON
X-AWS-Id
X-Labrador-Cache-Channel
X-Site-Version
X-IPLB-Instance
X-PHP-Host
Cross-Origin-Window-Policy
DB-Nickname
X-LJ-Flow-ID
X-Ms-Request-Id
X-ProxyCache-Key
X-Ms-Version
X-Proto
ServerID
Web-Mar-Node
X-R9-Blue-Green-Version
X-ProxyCache-Status
S-Rt
CDN-Uid
X-Handled-By
X-VWS-Id
X-GeoCode
CDN-RequestCountryCode
X-Content-Age
X-Forwarded-Host
X-Edge-Location
Node
Cache-Hits
X-UA-Device-Type
X-Cluster-Node
CDN-CachedAt
CDN-EdgeStorageId
CDN-PullZone
X-GeoCountry
CDN-Cache
X-Cluster
Cache-Name
X-No-Session
X-JoinUs
X-LSADC-Cache
X-Detected-As
X-LAGOON
X-FB-TRIP-ID
X-Routing-Service
X-Timing-Wait
X-Zipkin-Id
Locale
X-Xfnlog-Site
X-Urbn-Site-Id
Mn-Server-Ip
X-SaId
X-Proxied
X-Proxy-Build
Selected-Fe
X-Extlb
X-Urbn-Context-Path
X-WP-CF-Super-Cache-Cache-Control
WP-Super-Cache
X-WP-CF-Super-Cache
X-Tec-Api-Root
X-Tec-Api-Origin
ServedBy
Mime-Version
X-Tec-Api-Version
X-Times
Fastcgi-Useragent
X-XRDS-LOCATION
X-Hl-Ver
X-ECache
X-Request-Time
X-Air-Source
X-Air-Trace-Id
X-SRV
Liferay-Portal
X-Time
X-Air-Hostname
X-Tumblr-Pixel-3
X-Optimistic-Header
X-Buckets
X-CACHE-AGE
X-Cache-Debug
X-Redis-Cache
Source
Upgrade-Insecure-Requests
X-TNCMS
X-Loop
Xserver
X-Origin-Date
X-GEO
X-Mg-Request-UUID
X-Generated-By
X-NWS-UUID-VERIFY
X-Varnish-Hits
X-Akamai-Transformed
X-Uri
CF-Cached-On
Countrycode
X-Cdn
X-Director
X-Pass-Why
X-Tid
X-Tx-Id
X-Presslabs-Stats
X-ARC
Xet-Cookie
Frame-Options
X-Varnish-Beresp-Ttl
X-Newrelic-Synthetics
X-TA-CDN-Provider
X-Storage
X-Origin-CC
X-Origin-TTL
X-Varnish-Ttl
X-FireWall-Port
X-Service
X-Esi
X-Varnish-Cache-Hits
X-App-Version
X-B3-Spanid
X-ShopId
X-Shopify-Stage
X-DC
X-Sorting-Hat-PodId
X-Alternate-Cache-Key
Cache-Tv-Group
X-ShardId
X-Sorting-Hat-ShopId
X-Varnish-Hostname
X-Storefront-Renderer-Rendered
X-Datadog-Parent-Id
X-Endurance-Cache-Level
X-Datadog-Trace-Id
X-Datadog-Sampled
Environment
X-Datadog-Sampling-Priority
X-Request-Host
Release
X-Mid
Redirect-Candidate
Surrogated-Key
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
Thinkindot-Control
WWW-Authenticate
TDXMobile
T-Server
Req-Svc-Chain
X-Origin-Time
Sslversion
Rendered-Blocks
Ngx.Var.Host
DCR-Decision-By
DCR-Processing-Time-Ms
Edge-Cache
Candidate-Md5Url
BehaviorPad-Version
X-Mobile-URL
A
X-Nyt-Route
Gannett-Cam-Experience-Id
Meta-Geo-Continent
Odigeo-Trace-Id
Memcached
MD5-Digest
Host-ID
Lang
Origin
X-A-Dam
X-Generated-On
X-D
X-ServerID
X-Destination
X-Vdms-Version
X-Core-Value
X-Cache-NE
X-CMSURLCustom
X-INCAP-ABP
X-S-Maxage
X-Gdpr
X-Frame-Option
X-Ec-Fail
X-SRCache-Key
X-Thinkindot-L3
X-Ec-GeoHdr
X-TIM-N
X-Developer
X-External-Request-Id
X-ScT
X-Vdms-Path
X-Served-From
X-S-Cookie
X-S
X-Aed
X-Application
X-Platform-Router
X-Loc
X-Platform-Processor
X-A-Dgt
X-A-Ccd
X-Epic-Correlation-Id
X-Platform-Cluster
X-A-Dcw
X-B-Cookie
X-BBC-Edge-Cache-Status
X-Cache-Info
X-Level-Front-Cache
X-We-Are-Hiring
X-VG-TLSProxy
X-BCube-Filmed-By
X-Rojux
X-Bc-Bl
X-Processor
Xc-Version
X-A
X-A-Wwc
Server-Info
X-RM-Cache-TTL
SID
X-Fetched-On
X-SD-PageType
X-Human
Tube-Got-Eval
X-Origin-Response-Time
X-Fmm-Version
X-SB
X-NodeID
Tube-Get-Contents
X-Sigma
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
Fastly-GeoIP-CountryCode
Fastly-Backend-Name
X-Old-Content-Length
X-Sn-Servicetimems
X-Sigma-Backend
Tube-Got-Results
X-Ec-Custom-Error
Magicmarker
X-Has-Esi
X-Auto-Login
X-Httpd
X-Location
X-Gamma-Serve
X-Geo-Header
X-Pool
X-CUA
X-HS-Content-Campaign-Id
X-Platform-Server
X-GeoIP-City
X-Trace-ID
X-Restarts
X-Rocket-Build-Number
X-Thanos
X-JWT-State
Server-Host
X-Conf
X-Bip
X-Req
X-Cache-Bucket
Tube-Return
Apple-News-Services-Request-Url
Apple-News-Services-Parsed-Url
Apple-News-Services-Host
Apple-News-Services-Handled
X-DefHash
C-Via
X-Clara-WADP
Cache-Key
Cache-Host
AKAMAI
X-DefElseHash
X-Worker
X-WP-CF-Super-Cache-Active
X-Test
X-Core-Mission
X-WADP-Cache
X-Vmg-Version
X-VServer
X-WA-Info
Vix-Hermes-Req-Id
X-Varnish-Remaining-TTL
X-Is-Gdpr
Svr
Ssr
Country-Code
Decoy-Debug-Key
Decoy-Debug-Status
X-Akamai-Device-Characteristics
DSUID
Decoy-Debug-TTL
X-Cdn-Origin
X-Cdn-Srv
X-Varnish-CookieHashed-On
X-Developers
X-Varnish-CookieINHashed-On
X-Varnish-Beresp-Status
Click-Count-Action-Start
Cluster
CloudFront-Viewer-Country
Click-Count-Error
State
Section-Origin-Responded
Section-Io-Origin-Time-Seconds
X-Pubstack
Section-Io-Origin-Status
Section-Io-Id
X-Parent-Response-Time
X-AIR-PT
Wxu-Next-Hostname
Wxu-Next-Commit
X-Gzip
X-Hnp-Log
X-Hash
Wxu-Next-Region
X-Cache-Id
X-DPWN-IS-SECURE
X-Esi-Check
X-Fastly-Backend
X-Cache-FS-Status
X-Dispatcher-Server
X-Dispatcher-Number
X-Date
X-Ckpd-Fst-Backend
X-Device-Os
X-Cache-Backend
X-Block-Status
X-GeoIP-Region-Code
X-Ad-Defer-Variation
X-Accel-Expires-Debug
X-GeoIP-Country-Code
X-GeoIP
X-Gen-Mode
X-Azure-Ref-OriginShield
X-App
X-Accel-Buffering
X-Planisys-CDN-TTL
Kp-EeAlive
L
Is-Eu
Gh-Request-Id
X-Slack-Backend
X-Scale
Machine
NM-Fastcgi-Cache
X-Request-Start
NGX
Mail-Subject
X-V-Cache
X-Var-Ttl
X-Varnishpool
Cache-Provider
Adler-Geo
X-Wix-Viewer-Type
X-Org
CacheControlHeader
CDCHOST
X-Variation
Datacenter
Cmstype
Cmsid
X-Region-Sid
On-Server
X-Nginx-Cache-Key
X-NCache
X-Node-Id
X-Op-Id-All
Sever-Int
X-Nananana
X-Minions-Version
We-Hiring
User-Cache-Control
X-LB-NoCache
X-Men
X-Origin
Server-Hostname
Pics-Label
X-Qloud-Router
Origin-EX
Origin-CC
Platform
Producers
Server-Ext
X-Owner
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
Web-Mar-Region
X-Server-ID
X-Forwarded-Site
X-Irp-Debug
X-Cache-Tags
PFcat
X-Slack-Shared-Secret-Outcome
X-FC-Vary-Parameters
X-Server-IP
Fastly-SSL
X-Cached-By
X-CacheTTL
Canary
X-VarnishDD-TTL
X-Mvc-Supplant-Cachable
X-Refresh
X-HN
X-Platform
X-Up
X-Webkit-CSP-Report-Only
HA-Ipaddr
X-Csrf-Jwt
L5d-Success-Class
X-Cache-Date
X-CGP
Ha-Gx-Prefs
X-Cache-Remote
X-Aicache-OS
X-Eu-Site
Cdn
X-Mvc-Supplant-OutputCached
X-CSRF-Token
X-Via-Popn
X-Via-Popv
X-Servedbyhost
GeoIP-Latitude
X-Via-Poph
Env
X-Microcachable
X-RCS-CacheZone
X-HA-Backend
Cdnsip
X-AK-Request-ID
X-Tb-Optimization-Total-Bytes-Saved
Cdncip
X-Mly-Id
HostName
Server-ID
X-Zone
Load-Balancing
X-Fastly-Cache
Time
X-API-Version
X-Wa
Memory
X-VC
X-Gateway-Skip-Cache
X-Gateway-Request-Id
X-Gateway-Cache-Key
X-Gateway-Cache-Status
X-DataCenter
X-Vc
X-Nc
X-Webkit-CSP
X-ZONE
X-Generated-In
X-Fpc
X-ND-Cache
X-Instance-Name
X-APP-VERSION
X-Origin-Expires
X-LB-ID
Cache
X-Release
Hostname
X-HS-Status
Eomportal-Instance
X-Response-By
X-Via-NSCOPI
X-Correlation-ID
X-Vgn-Hpd-Variations-Key
X-FL-QIT-DEBUG
Ngx-Var-Key
X-Check-Cacheable
X-Micro-Cache
X-Vgn-Hpd-Ssi
X-Client-Ip
X-Hcs-Proxy-Type
X-CCDN-Origin-Time
X-CCDN-CacheTTL
X-Vgn-Hpd-Cached
Locid
Expect-Staple
Srvid
X-From
X-FL-EDGE
OT-Force-Account-Verify
X-CSRF-TOKEN
X-Api-Version
X-CS
X-Cache-Enabled
X-Via-CDN
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X-Srv
NtCoent-Length
X-Via-SSL
IsBot
GeoIp-Country-Code
Edge-Copy-Time
AMP-Access-Control-Allow-Source-Origin
X-Via-Edge
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X-Provided-By
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X-Cache-NGX
X-MCACHE
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X-Info
XkeyRZ
X-Proxy-CacheRZ
X-Dc
X-Via-JSL
X-Lambda-Id
X-Air-Pt
X-Debug-Cache-Fetch
Uri
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X-Nf-Request-Id
True-Client-IP
X-Amz-Meta-Cb-Modifiedtime
Srv
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Sid
True-Client-Ip
X-EC-Lua
Path
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CPC-Cache
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VNS-Cache
Resin-Trace
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X-Vtex-Remote-Cache
VNS-Age
X-Cs
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X-Oss-Storage-Class
X-Oss-Server-Time
X-Oss-Hash-Crc64ecma
Fastly-Drupal-Html
X-Oss-Object-Type
X-Cache-Expires
X-B3-SpanId
Request-ID
X-TH-Server
X-VCT
X-Edge-POP
Servername
CDN
GeoIP-Country-Code
X-Fastly-Country-Code
Cross-Origin-Opener-Policy-Report-Only
X-CLOUD-TRACE-CONTEXT
X-ATG-Version
X-Varnish-Authentication
X-Cache-ASPX
Esi-Enabled
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X-MSEdge-Features
X-MSEdge-Flight
X-Moov-T
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X-Moov-Xdn-Version
X-Varnish-Beresp-TTL
Traceparent
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X-Cdn-Request-ID
Timeexpire
X-PERF
YJS-ID
X-FPC
X-Viewer-Country
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X-ApacheServer
M-TraceId
X-Akamai-Pragma-Client-IP
X-Upstream-Ht
LB
X-Upstream-Ct
X-PAYTM-SRV-ID
X-RateLimit-Limit-Second
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X-CF-Lambda-Version
X-CF-Lambda-Fn
X-Service-Response-Time
X-Cache-Type
Sm-Log-Id
XServer
X-Datacenter
X-Lb-Id
X-RateLimit-Reset
X-Datadome
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X-SERVER-NAME
Powered-By
X-Cdn-Cache-Status
X-Udemy-Cache-App-Namespace
X-NAPM-TraceId
FSS-Cache
X-WA
Server-Id
X-Geo
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X-Wikidot-Backend
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Proxy-Connection
X-Srcache-Store-Status
HIT
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N-Cache
X-Wikidot-Static-Cache
RNT-Machine
X-NC
X-Srcache-Fetch-Status
X-CACHE-KEY
ENV
Tracecode
X-LiteSpeed-Cache-Control
X-TraceId
True-Client-Country-4JS
V-Age
X-Shop-Environment
X-Clientip
X-Hyper-Cache
X-Orig-Expires
X-Bl-Debug
X-Tenant
Epwk-X-Cache
X-Ha-Backend
X-Forwarded-Path
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X-MP-GENERATED-AT
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X-Via-PopV
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X-Via-PopH
X-Cdn-Forward
Geoip-Latitude
X-VG-WebCache
XM
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X-B3-Trace-ID
X-M-Log
X-M-Reqid
Inserted-Into-Cache-At
Content-Script-Type
User-Agent
Ngx
X-B3-ParentSpanId
X-Swift-Error
Ec-Rule-Version
X-Lb-Nocache
X-Serial
X-Fastly-Backend-Reqs
X-UP
X-B3-Parentspanid
Content-Style-Type
X-Qnm-Cache
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-Vgn-Hpd-Reason
X-Amz-Meta-Opti
X-Policy
X-App-Name
X-Dw-Trace-Id
X-TT-LOGID
X-F-Status
X-Wp-Cf-Super-Cache
X-Wp-Cf-Super-Cache-Cache-Control
X-Lsadc-Cache
X-Acquia-Application-UUID
X-Acquia-Purge-Tags
X-Acquia-Site
X-Acquia-Application-Trace
Hit
X-RAMCache
X-Fastly-Cache-Hits
Lb
Warning
X-MiniProfiler-Ids
X-Cache-Ngx
X-Request-URL
X-Mid-Debug-Cache-Key
X-Stale
X-Mid-Debug-Cache-Disk
X-Cdn-Diag
X-IPS-Cached-Response
X-LiteSpeed-Tag
X-Th-Server
My-App
MIME-Version
Cneonction
Pramga
X-Snapshot-Date