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