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