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