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
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Expect-CT
Accept-Ranges
Pragma
X-Powered-By
X-XSS-Protection
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
Alt-Svc
P3P
X-Cache-Hits
X-UA-Compatible
X-Xss-Protection
X-Served-By
CF-Ray
X-Download-Options
X-Timer
X-Request-Id
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
Access-Control-Allow-Credentials
X-Permitted-Cross-Domain-Policies
Content-Security-Policy-Report-Only
X-AspNet-Version
X-Runtime
X-Drupal-Cache
X-Generator
X-Cache-Status
X-Check
X-Cacheable
X-Envoy-Upstream-Service-Time
X-DNS-Prefetch-Control
X-FRAME-OPTIONS
Timing-Allow-Origin
X-Iinfo
X-Request-ID
X-Dns-Prefetch-Control
X-Drupal-Dynamic-Cache
Feature-Policy
X-Content-Security-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
Server-Timing
X-XSS-PROTECTION
Access-Control-Max-Age
X-Amz-Request-Id
Request-Context
X-Amz-Id-2
X-Turbo-Charged-By
X-AH-Environment
X-Via
X-Robots-Tag
X-Backend
X-Cache-Group
Cf-Edge-Cache
Keep-Alive
Host-Header
X-Hacker
X-Proxy-Cache
X-Server
X-UA-Device
X-Rq
X-Server-Powered-By
Allow
X-Age
X-Vhost
X-Varnish-Cache
X-Ws-Request-Id
X-Dispatcher
EagleId
X-Amz-Version-Id
Grace
P3p
Cf-Apo-Via
Nel
X-LiteSpeed-Cache
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-Page-Speed
X-Device
Cf-Railgun
EagleEye-TraceId
X-Aws-Lambda-Call-Status
X-Swift-CacheTime
X-Swift-SaveTime
X-WebKit-CSP
Ali-Swift-Global-Savetime
X-Pingback
X-Node
X-Host
Accept-CH
X-OneAgent-JS-Injection
X-Server-Id
X-Backend-Server
Surrogate-Control
X-CST
X-Nginx-Cache-Status
X-Readtime
X-Akam-SW-Version
X-Cache-Lookup
Permissions-Policy
X-Content-Security-Policy-Report-Only
Request-Id
X-Application-Context
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Nginx-Upstream-Cache-Status
X-Cloud-Trace-Context
X-Trace
Accept-Ch-Lifetime
X-Response-Time
X-Edge
X-HW
X-Ua-Compatible
Content-Location
X-Mod-Pagespeed
X-Clacks-Overhead
Accept-CH-Lifetime
X-Ruxit-JS-Agent
X-Litespeed-Cache
X-Midtier
X-Url
X-ECACHE
Rating
X-Amz-Server-Side-Encryption
X-Mcache
Xkey
X-ESI
X-Country
X-Oneagent-Js-Injection
X-Upstream
X-Vcap-Request-Id
X-TtlSet
X-PC
X-Vname
Accept-Ch
Cache-Tag
X-MS-InvokeApp
X-Rack-Cache
X-D2id
X-Cdn-Fetch
Verso
X-Exp-Id
X-Element-Page-Cache
X-Kinja-Revision
X-Kinja-Server
X-Use-Magma
X-Exp-Variant
X-Kinja-Build
X-Kinja
X-GoogleNews-Bot
RTSS
X-Cache-TTL
Edge-Control
Fastly-Restarts
X-Powered-By-Plesk
X-VARITI-CCR
Origin-Trial
X-Ac
X-Ruxit-Js-Agent
X-Navigation-Version
X-Abt-Application-Version
X-Goog-Hash
X-Cached
X-Content-Type
Service-Worker-Allowed
X-Country-Code
X-WebKit-CSP-Report-Only
X-Ttl
X-GitHub-Request-Id
X-Middleton-Display
X-Sol
Display
Pagespeed
X-Amz-Rid
X-Browser-Type
X-Mg-S
X-Varnish-TTL
X-Dw-Request-Base-Id
SPRequestGuid
X-SharePointHealthScore
X-Server-Name
Cross-Origin-Opener-Policy
X-B3-TraceId
Arr-Disable-Session-Affinity
X-Erf-Bev-Bev-Is-Generated
X-Erf-Bev-Bev
X-Instrumentation
X-Kraken-Loop-Name
X-Server-Lifecycle-Phase
X-Powered-CMS
X-Amzn-Trace-Id
AR-PoweredBy
AR-SID
AR-ATIME
AR-Request-ID
Response
X-Middleton-Response
SPIisLatency
SPRequestDuration
X-Cache-Key
AR-CACHE
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-Version
X-Fastly-Request-ID
X-Times
X-T
X-Cnection
X-NF-Request-ID
Cache-Tags
X-Fastcgi-Cache
Cache-Status
X-Accel-Expires
Front-End-Https
X-HP-Webp
X-Jurisdiction
X-HP-Trace-Id
Pinterest-Version
X-Pinterest-Rid
Pinterest-Generated-By
X-MSEdge-Ref
Edge-Cache-Tag
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Px
X-Hits
Nginx-Cache
X-Ser
X-Client-IP
X-NWS-LOG-UUID
Public-Key-Pins
X-B3-TraceId-Primal
Mrf-Cache-Status
X-Recruiting
X-Kinja-CCPA
MRF-Tech
X-B3-Traceid
X-LLID
X-Request-Received
X-Request-Processing-Time
Server-Node
X-Frontend
Payment
X-Ua-Browser
X-Ua-Device
X-Shield-Request-Id
X-Webkit-CSP
X-Erf-Stays-Pdp-Viaduct-Migration-Web
X-DIS-Request-ID
Access-Control-Request-Method
TP-Cache
X-RateLimit-Remaining
S
X-Ratelimit-Remaining
X-Goog-Metageneration
X-HS-Cache-Config
X-HS-Hub-Id
MicrosoftSharePointTeamServices
X-HS-Content-Id
X-HS-Combine-CSS
TP-L2-Cache
X-LB-Cache
X-FastCGI-Cache
X-Content-Digest
X-Distributor
X-PressLabs-Stats
Content-MD5
X-Request-Handler-Origin-Region
X-Microsite
Realpath
X-Geo-Country
X-Forwarded-For
X-Ezoic-Cdn
X-RateLimit-Limit
X-Page-Id
X-FB-Debug
Accept-Charset
X-Hostname
Access-Control-Allow-Method
Fastcgi-Cache
X-Protected-By
X-GUploader-UploadID
X-Webkit-CSP-Report-Only
X-Cluster-Name
X-Correlation-Id
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Rid
X-Seen-By
X-Ratelimit-Limit
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-Envoy-Decorator-Operation
X-B3-Sampled
Cleartype
X-XRDS-Location
TCN
DC
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Goog-Generation
Referer-Policy
X-Newrelic-App-Data
X-Mobile
X-Origin-Cache
X-Debug-Info
X-Origin-Server
Cross-Origin-Resource-Policy
X-Webkit-Csp
X-Aspnet-Version
X-Varnish-Backend
X-Git-Hash
X-Logged-In
X-TTL
X-Azure-Ref
X-Contextid
X-Server-ID
X-Is-Crawler
X-Flags
X-Providence-Cookie
X-Request-Guid
X-Varnish-Grace
X-Route-Name
X-Content-Options
X-Fb-Rlafr
X-Aspnet-Duration-Ms
Surrogate-Key
X-Edge-Location-Klb
X-Kinsta-Cache
X-Grace
X-Revision
X-Amz-Replication-Status
X-IPS-LoggedIn
Alternate-Protocol
X-TT
X-App-Environment
X-Amz-Meta-S3cmd-Attrs
Count-Hit
X-Client-Ip
X-App-Server
X-Forwarded-Proto
Healthy
X-Wix-Request-Id
X-Hosted-By
Frame-Options
X-Whom
Charset
WPO-Cache-Status
WPO-Cache-Message
MS-Author-Via
Viewport
X-Akamai-Edgescape
X-Daa-Tunnel
X-Oracle-Dms-Ecid
X-Magnolia-Registration
X-B
Retry-After
Paypal-Debug-Id
X-Oracle-Dms-Rid
X-Backend-Name
Filterid
X-F-Cache
SRV
Section-Io-Cache
X-Id
Amp-Access-Control-Allow-Source-Origin
X-Activity-Id
X-Az
X-AppVersion
X-Trace-Id
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Www-Served-By
X-Proxy-Cache-Info
Server-Name
X-Cache-Control
X-Cache-Age
X-App-Version
X-Type
X-Instance
X-Original-Request-Id
X-Time
X-Http-Reason
VIX-Pulpo-Node
X-Response-Served-From
X-ARC
SD-X-WS
Akamai-GRN
X-Varnish-Server
X-Cache-Rule
X-Rule
VIX-Pulpo-Upstream-Status
Host
X-Rocket-Nginx-Serving-Static
Front
X-Varnish-Age
X-Status
X-EdgeConnect-Cache-Status
X-Edge-Location
X-RateLimit-Reset
X-UUID
X-Proxy
Protected
Refresh
X-Cache-Grace
X-Akamai-Request-ID2
X-L-Path
X-Page-View
X-COUNTRY
X-FW-Server
X-Framework
X-Cacheable-TTL
X-Environment-Context
X-FW-Type
X-Is-Bot
X-FW-Static
X-User-Agent
X-FW-Dynamic
X-FW-Version
X-FW-Serve
X-Rendered-As
X-FW-Hash
Fastly-SWR
X-Adobe-Content
From-Origin
X-N
X-Adobe-Loc
Access-Control-Request-Headers
X-Region
Fastly-SIE
X-Jobs
X-RemovedCookies
X-Tumblr-Pixel-1
X-Unique-Id
X-Cache-Time
X-ProcessESI
Version
X-Tumblr-Pixel
X-Load-Cache
X-G
X-Tumblr-User
X-Tumblr-Pixel-0
ServerID
X-Language
Country
X-Datadog-Sampling-Priority
X-Datadog-Trace-Id
X-Datadog-Parent-Id
X-Source
X-Vcache
X-CDN-Forward
Content-Disposition
X-Drupal-Cache-Tags
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Upgrade-Enabled
X-DataDome
X-Datadog-Sampled
X-Mg-Request-UUID
Accept-Language
X-HTML-Minification-Powered-By
X-Debug-IsConnected
Countrycode
X-Debug-IsPreview
X-Amzn-Remapped-Content-Length
X-Nf-Request-Id
X-ID
X-DynaTrace
Xet-Cookie
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Generated-By
Backend
X-Signature
X-B-Cache
X-ECache
X-Varnish-Ttl
X-DynaTrace-JS-Agent
CF-IPCountry
X-WP-CF-Super-Cache
X-WP-CF-Super-Cache-Cache-Control
X-B3-SpanId
X-Nginx-Cache
Xserver
Liferay-Portal
X-Mode
Webserver
X-Erf-Web-Scheduler
X-Servername
X-NYM-Debug-Backend
X-Tt-Logid
X-Device-Type
Url
X-Httpd
X-Content-Age
X-Content-Powered-By
X-Xrds-Location
X-Zen-Fury
X-Cache-Operation
Azure-InstanceId
X-Sucuri-Cache
X-Varnish-Cache-Hits
Azure-SiteName
X-ServerID
X-Urbn-Site-Id
X-UPSTREAM-Address
Azure-RegionName
X-Urbn-Context-Path
X-Tb
X-Sucuri-ID
X-Say-Cacheable
X-GeoCode
Fastcgi-Useragent
X-Director
X-Drupal-Cache-Contexts
X-GeoCountry
X-SayCDN-TTL
X-Git-Commit
Filters
X-Container-Uri
Onion-Location
Meta-Geo
Load-Balancing
S-Rt
X-Cache-Action
GEO-INFO
X-LAGOON
X-JoinUs
Locale
X-Say-TTL
Azure-Version
Azure-SlotName
X-Rewrite-Enabled
X-SaId
X-Proto
X-Labrador-Cache-Channel
X-PHP-Host
X-Soup
X-Varnish-Hostname
X-VC-Cache
X-Forwarded-Host
X-Storage
X-Served-From
Web-Mar-Node
X-Logging-Id
X-RM-Cache-TTL
X-Generation-Time
X-Sql-Duration-Ms
X-Detected-As
X-Adobe-Source
X-Sql-Count
Uber-Trace-Id
CDN-RequestId
X-Proxied
X-Routing-Service
X-Extlb
X-Cache-Server
X-Debug
X-Skip-Cache
X-R9-Blue-Green-Version
X-Zipkin-Id
X-VCT
Webcakes-App-Name
Webcakes-App-Version
Node
Property-Id
TWC-Privacy
Webcakes-Region
TWC-Device-Class
TWC-GeoIP-LatLong
TWC-Connection-Speed
TWC-Locale-Group
TWC-GeoIP-Country
X-Format
X-Uri
X-Tumblr-Pixel-2
X-Tumblr-Pixel-3
X-Cluster-Node
X-Origin-Hint
Mn-Server-Ip
X-LSADC-Cache
X-Lambda-Id
Selected-Fe
X-Proxy-Build
X-Ms-Version
X-Timing-Wait
X-Ms-Request-Id
X-FB-TRIP-ID
DB-Nickname
X-Template
X-RCS-CacheZone
X-Fetched-On
OT-Force-Account-Verify
Fastly-Drupal-HTML
X-Ratelimit-Reset
Source
X-Origin-Date
X-MP-GENERATED-AT
X-XRDS-LOCATION
X-URL
X-MCACHE
X-Loop
X-Tncms
X-Cache-Hit
X-Pass-Why
X-Tec-Api-Version
X-Tec-Api-Root
X-Tec-Api-Origin
X-Endurance-Cache-Level
X-Varnish-Hits
X-Cache-Expired-At
X-Srv
X-Redis-Cache
X-Ua
Content-Secure-Policy
Upgrade-Insecure-Requests
X-UA-Device-Type
X-Cache-TTL-Remaining
Cross-Origin-Window-Policy
X-Via-JSL
X-Fastly-Request-Id
X-Real-IP
X-CCDN-Origin-Time
X-Origin-CC
X-Origin-TTL
X-CCDN-CacheTTL
Section-Io-Id
Section-Origin-Responded
Section-Io-Origin-Time-Seconds
Section-Io-Origin-Status
X-Pubstack
X-Hcs-Proxy-Type
X-Node-Name
X-NGENIX-Cache
X-AIR-PT
X-Rn-Rsrv
X-S
X-GEO
X-TimeS
X-Server-W
X-CACHE-AGE
NGB
Cache-Provider
CDN-EdgeStorageId
CDN-PullZone
CDN-CachedAt
CDN-Cache
X-Cache-Host
CDN-RequestCountryCode
CDN-RequestPullCode
X-RTag
CDN-RequestPullSuccess
CDN-Uid
MS-CV
Ms-Operation-Id
X-PHP-Backend
Cache-Hits
X-CSRF-Token
X-Datadome
X-Hl-Ver
X-Aspnetmvc-Version
Cache-Name
X-IPLB-Instance
X-Newrelic-Synthetics
X-Xfnlog-Site
X-Cache-Type
X-IPLB-Request-ID
X-Optimistic-Header
X-Cms-Context
X-Restarts
Apigw-Requestid
X-Akamai-Transformed
X-Parent-Response-Time
X-Reqid
X-BYPASS-REASON
X-No-Session
X-ProxyCache-Status
X-ProxyCache-Key
Fastly-Backend-Name
X-Application
CPC-Age
X-Is-Gdpr
X-CGP
X-A-Ccd
VNS-Cache
X-JWT-State
X-Mvc-Supplant-Cachable
VNS-Age
DCR-Processing-Time-Ms
DCR-Decision-By
CPC-Cache
X-Epic-Correlation-Id
X-Eu-Site
Web-Mar-Region
X-GeoIP-Region-Code
X-Forwarded-Path
Canary
X-Gdpr
BehaviorPad-Version
Rendered-Blocks
X-GeoIP-Country-Code
Candidate-Md5Url
X-FC-Vary-Parameters
X-Has-Esi
X-A-Dam
X-B-Cookie
X-External-Request-Id
X-Fastly-Backend
X-Handled-By
X-Irp-Debug
X-Bc-Bl
Ngx.Var.Host
X-Accel-Buffering
X-Developer
Surrogated-Key
X-A-Wwc
X-Accel-Expires-Debug
X-Dispatcher-Number
X-A
X-CacheTTL
X-BCube-Filmed-By
X-Conf
True-Client-Country-4JS
X-A-Dgt
X-Date
X-D
X-A-Dcw
X-Csrf-Jwt
X-Debug-Cache-Fetch
T-Server
X-CF-Lambda-Fn
X-Destination
Odigeo-Trace-Id
X-Debug-Cache-Store
Meta-Geo-Continent
MD5-Digest
X-Ec-Fail
X-Cache-Bucket
Redirect-Candidate
Sslversion
Gh-Request-Id
X-Cache-Info
X-Ec-GeoHdr
X-App
Fastly-SSL
Vix-Hermes-Req-Id
Gannett-Cam-Experience-Id
X-CF-Lambda-Version
Ha-Gx-Prefs
X-Cache-NE
X-Bl-Debug
Magicmarker
X-Aed
Lang
L5d-Success-Class
HA-Ipaddr
Server-Host
X-Ec-Custom-Error
L
Fastly-GeoIP-CountryCode
X-Orig-Expires
X-SD-PageType
X-ScT
X-Slack-Backend
X-Slack-Shared-Secret-Outcome
X-SRCache-Key
X-S-Cookie
X-Rojux
X-Policy
X-RateLimit-Limit-Second
X-RateLimit-Remaining-Second
X-Request-Host
X-Tenant
X-Var-Ttl
X-Wikidot-Static-Cache
X-Wikidot-Backend
X-Wix-Viewer-Type
X-Worker
Xc-Version
X-We-Are-Hiring
X-Vtex-Remote-Cache
X-Vdms-Path
X-Vdms-Version
X-VG-WebCache
X-Viewer-Country
X-Origin-Time
X-Shop-Environment
X-Nyt-Route
X-Via-Fastly
X-Old-Content-Length
X-SVT-ORM-VERSION
X-Core-Mission
Req-Svc-Chain
X-Core-Value
X-CMSURLCustom
X-SVT-ORM-RULES
TDXMobile
Thinkindot-CacheControl
X-Thinkindot-L3
X-Thanos
X-Clara-WADP
X-Clientip
Release
X-DefElseHash
X-Geo-Header
X-DefHash
X-Human
X-ShopId
X-Shopify-Stage
Origin
X-Sn-Servicetimems
Producers
X-Storefront-Renderer-Rendered
Platform
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
Thinkindot-CacheControl-Type
Thinkindot-Control
X-WADP-Cache
X-Bip
X-Loc
X-VServer
X-Level-Front-Cache
X-Mid
X-Mly-Id
X-ApacheServer
X-App-Name
X-BBC-Edge-Cache-Status
X-Alternate-Cache-Key
X-Nitro-Cache
X-VG-TLSProxy
X-Node-Id
X-Access
X-Variation
X-Cdn-Diag
X-Cdn-Origin
X-Up
X-Varnish-CookieHashed-On
X-Varnish-CookieINHashed-On
X-Cache-Id
X-Cache-Debug
We-Hiring
W
X-Varnish-Remaining-TTL
N-Cache
X-INCAP-ABP
ServedBy
Cmsid
X-Platform
X-S-Maxage
Host-ID
X-PERF
Cmstype
X-Gzip
X-Esi-Check
Environment
Expect-Staple
X-Qloud-Router
X-Auto-Login
X-Pool
X-PAYTM-SRV-ID
Is-Eu
X-Forwarded-Site
X-Fmm-Version
X-Origin-Response-Time
AKAMAI
X-Generated-On
Adler-Geo
Mail-Subject
X-ShardId
X-Server-IP
X-TA-CDN-Provider
X-Owner
X-Section
Machine
X-DPWN-IS-SECURE
X-Tx-Id
X-Proxy-Cache-Status
X-AWS-Id
X-VWS-Id
User-Cache-Control
X-LJ-Flow-ID
X-Cluster
X-WA-Info
X-Origin
Memcached
X-Nginx-Cache-Key
X-Block-Status
Apple-News-Services-Request-Url
X-Vmg-Version
Apple-News-Services-Host
X-Mvc-Supplant-OutputCached
X-Presslabs-Stats
X-Nananana
X-Gen-Mode
X-Dispatcher-Server
X-Hnp-Log
Apple-News-Services-Handled
X-Akamai-Device-Characteristics
Apple-News-Services-Parsed-Url
X-NodeID
Datacenter
X-Cdn-Srv
Server-Hostname
Country-Code
X-TIM-N
X-Org
X-Test
Sever-Int
DSUID
X-Request-Time
Server-Ext
X-Scale
X-Hash
CDCHOST
X-Varnishpool
CloudFront-Viewer-Country
X-NCache
X-GeoIP
X-LB-NoCache
X-From
X-Refresh
X-Op-Id-All
X-Instance-Name
X-Device-Os
WP-Super-Cache
Origin-EX
Pics-Label
Origin-CC
Esi-Enabled
NM-Fastcgi-Cache
C-Via
X-Vcl-Version
X-TIME
X-Cache-Status-Check
X-Cache-Enabled
Wxu-Next-Commit
X-Amz-Meta-Cb-Modifiedtime
Server-Info
Server-ID
Wxu-Next-Region
Ssr
Wxu-Next-Hostname
X-API-Version
X-Web-Node
X-Cs
X-HA-Backend
Time
X-Azure-Ref-OriginShield
Hostname
Cf-Device-Type
Origin-Agent-Cluster
X-Air-Hostname
X-Air-Source
Memory
X-Air-Trace-Id
X-ZONE
NGX
GeoIP-Latitude
X-VHOST
AMP-Access-Control-Allow-Source-Origin
X-Tb-Optimization-Total-Bytes-Saved
X-Platform-Router
X-Platform-Processor
X-CACHE-GROUP
X-Platform-Cluster
X-Origin-Expires
X-Microcachable
Cache-Host
X-Correlation-ID
X-DC
X-Varnish-Beresp-Grace
XM
X-Varnish-Beresp-Ttl
X-Dc
X-Wp-Cf-Super-Cache-Active
X-VarnishDD-TTL
X-Micro-Cache
X-Vgn-Hpd-Reason
X-HN
X-Internal-Host
X-Fpc
PFcat
X-Locale
X-Site-Version
X-Webkit-Csp-Report-Only
YJS-ID
X-Ad-Defer-Variation
Resin-Trace
Edge-Copy-Time
A
X-FL-EDGE
Locid
X-Via-SSL
X-Via-CDN
Srvid
X-FL-QIT-DEBUG
X-Via-Edge
X-AB
Cdn-Requestid
X-Zone
X-TraceId
X-WP-CF-Super-Cache-Active
X-DataCenter
X-Pod-Name
X-LiteSpeed-Cache-Control
X-Github-Request-Id
Location
X-Buckets
X-B3-Spanid
Uri
X-ATG-Version
User-Agent
X-Moov-Xdn-Version
X-FireWall-Port
X-Geo-Region
X-Cache-ASPX
X-Cached-By
X-B3-Parentspanid
X-Moov-T
Sid
X-Contensis-Viewer-Groups
X-Upstream-Ct
X-Upstream-Ht
X-Varnish-Authentication
True-Client-Ip
IsBot
X-SIPLIST1
X-Backend-Instance
Cache-Key
X-Info
X-FTR-Request-ID
X-Accel-Version
GeoIP-Country-Code
CF-Ctrl
X-NGINX-Cache
X-Esi
X-Nitro-Cache-From
X-Nitro-Rev
SID
X-Is-Desktop
X-Tcp-Rtt
X-Is-Supported-Browser
X-Is-Tablet
X-Is-Mobile
X-Browser-Name
X-Planisys-CDN-Rules
X-Planisys-CDN-TTL
X-Platform-Server
GeoIp-Country-Code
Cdn
X-HS-Content-Campaign-Id
X-Planisys-CDN-Cache
X-MSEdge-Features
State
X-CS
X-MSEdge-Flight
X-VCache
X-LiteSpeed-Tag
NtCoent-Length
X-Fastly-Cache
X-Release
XServer
X-Datacenter
X-Provided-By
X-NewRelic-App-Data
X-CSRF-TOKEN
X-VC
X-Rocket-Build-Number
X-Hyper-Cache
X-Sigma
Lb
X-Cache-Remote
True-Client-IP
Epwk-X-Cache
Path
X-Sigma-Backend
X-Geo
X-RN-RSRV
X-SRV
X-TRACE-ID
X-Vgn-Hpd-Variations-Key
X-Vgn-Hpd-Ssi
X-Vgn-Hpd-Cached
X-HS-Status
Cache
Fastly-Drupal-Html
X-Generated-In
X-Gamma-Serve
X-Service
X-FPC
X-Frame-Option
X-Scheme
X-Api-Version
X-Webstats-RespID
X-GeoIP-City
X-HostName
Tcn
X-GoCache-CacheStatus
WebServer
Cf-Ipcountry
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X-APP-VERSION
Serverid
X-Pad
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-UA
Cdnsip
X-Air-Pt
Ohc-File-Size
X-AK-Request-ID
Cdncip
X-Amz-Meta-Opti
X-Guploader-Uploadid
Cache-Tv-Group
Kp-EeAlive
Cdn-Host
Cdn-Request-Time
X-Edge-Server
X-Origin-Cache-Key
X-Vercel-Cache
X-Wp-Cf-Super-Cache-Cache-Control
X-Vercel-Id
X-EC-Lua
X-Branch-Name
X-Traceid
X-Wp-Cf-Super-Cache
X-Cache-Ttl
LB
X-Wp-Cf-Super-Cache-Cookies-Bypass
X-FTR-Cache-Status
Env
WZWS-RAY
XkeyRZ
Proxy-Connection
X-Mobile-URL
X-Location
Yak-Timeinfo
X-Cdn-Cache-Status
X-FTR-Backend
X-FTR-Backend-Server
X-FTR-Balancer
X-Vc
X-Country-Code-Real
X-FTR-Expires
X-Proxy-CacheRZ
M-TraceId
Req-ID
X-CACHE-KEY
CDN
X-Cdn-Request-ID
HostName
X-VCL-Version
CacheControlHeader
X-Ad-Load-Variation
X-Akamai-Pragma-Client-IP
On-Server
X-Edge-Pop
X-Region-Sid
X-Aicache-OS
X-Developers
X-NMSegId
Srv
X-Cache-Tags
Ohc-Cache-HIT
X-Cdn-Forward
X-Men
X-NWS-UUID-VERIFY
Cluster
Geoip-Latitude
Ngx
X-Lb-Cache
X-Request-Start
X-Scope-Id
Click-Count-Error
X-Servedbyhost
X-M-Reqid
V-Age
Pramga
Content-Style-Type
X-Acquia-Purge-Cdn-Unconfigured
Server-Id
X-Cache-FS-Status
X-V-Cache
X-M-Log
X-Ha-Backend
Content-Script-Type
X-Req
X-Nc
Tube-Return
X-WP-CF-Super-Cache-Cookies-Bypass
X-Wa
X-Minions-Version
RNT-Time
X-B3-Trace-ID
X-LB-ID
X-SB
Tube-Got-Results
CF-Cached-On
X-CDN-Cache-Status
X-Via-Popn
X-Via-Poph
Click-Count-Action-Start
X-TX-ID
X-Via-Popv
Tube-Got-Eval
Mime-Version
RNT-Machine
Tube-Get-Contents
X-TT-LOGID
X-Lb-Nocache
X-MiniProfiler-Ids
X-Check-Cacheable
X-Fastly-Country-Code
X-IN-APIGATEWAYSSL
ENV
X-Via-Ucdn
WWW-Authenticate
X-Dw-Trace-Id
X-Tim-N
X-Request-URI
X-Shield-Cache-Expires
X-Qnm-Cache
X-Acquia-Application-Trace
X-Acquia-Application-UUID
X-Varnish-Beresp-Status
X-Snapshot-Date
X-IN-APIGATEWAY
X-Edge-POP
X-Acquia-Purge-Tags
X-Acquia-Site
PICS-Label
Yjs-Id
Edge-Cache
X-User
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X-Fastly-Cache-Hits
CACHE-MISS-TO-ORIGIN
X-Iauth-Set-Uid
X-Fastly-Backend-Reqs
Vha6-Origin
X-Cached-Since
X-RAMCache
X-Miniprofiler-Ids
Log-Origin
X-Litespeed-Cache-Control
X-ElasticPress-Query
Cneonction