Threat Level: green Handler on Duty: Bojan Zdrnja

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
Last-Modified
Cf-Request-Id
CF-RAY
CF-Cache-Status
Accept-Ranges
Link
ETag
Pragma
Expect-CT
X-Powered-By
X-XSS-Protection
Via
Age
X-Cache
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
Referrer-Policy
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
Alt-Svc
X-Xss-Protection
X-UA-Compatible
X-Served-By
X-Timer
X-Download-Options
Access-Control-Allow-Headers
X-Varnish
Access-Control-Allow-Methods
X-Request-Id
Access-Control-Allow-Credentials
X-AspNet-Version
X-Adblock-Key
X-Runtime
X-Permitted-Cross-Domain-Policies
Content-Security-Policy-Report-Only
X-Request-ID
X-Drupal-Cache
X-Check
X-Cache-Status
X-Generator
X-DNS-Prefetch-Control
X-Cacheable
Timing-Allow-Origin
P3p
X-Content-Security-Policy
X-Iinfo
X-FRAME-OPTIONS
Status
X-Ua-Compatible
Content-Encoding
Feature-Policy
X-AspNetMvc-Version
X-CDN
X-Envoy-Upstream-Service-Time
Upgrade
Access-Control-Expose-Headers
X-Drupal-Dynamic-Cache
Access-Control-Max-Age
X-Via
Keep-Alive
X-Ws-Request-Id
X-Dns-Prefetch-Control
Request-Context
Server-Timing
X-Robots-Tag
X-AH-Environment
X-Server
X-Hacker
X-Age
X-Turbo-Charged-By
X-Proxy-Cache
X-Server-Powered-By
X-Cache-Group
X-Backend
X-Amz-Request-Id
Host-Header
EagleId
X-Amz-Id-2
X-Nginx-Cache-Status
Report-To
X-Rq
X-LiteSpeed-Cache
X-Varnish-Cache
X-UA-Device
X-Page-Speed
Grace
X-Pingback
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-Device
EagleEye-TraceId
X-OneAgent-JS-Injection
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-Vhost
NEL
X-Amz-Version-Id
Cf-Railgun
X-Dispatcher
X-Host
X-CST
X-Cache-Spec
X-Server-Id
X-Node
Allow
X-Backend-Server
Request-Id
Surrogate-Control
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
X-Readtime
X-Webkit-CSP
X-WebKit-CSP
X-Akam-SW-Version
X-Response-Time
Accept-CH
Accept-Ch-Lifetime
Xkey
X-HW
X-Language
X-Ruxit-JS-Agent
X-Country
X-Application-Context
X-Ac
Content-Location
X-Template
X-Cloud-Trace-Context
MS-Author-Via
X-Cache-Lookup
Rating
X-Url
X-B3-TraceId
Accept-Ch
Edge-Control
X-Mod-Pagespeed
X-PC
X-Vname
X-TtlSet
X-Clacks-Overhead
X-Varnish-TTL
X-ESI
X-MS-InvokeApp
X-Trace
X-Content-Type
Fastly-Restarts
X-Rack-Cache
X-GitHub-Request-Id
X-Origin-Cache
X-Cnection
X-FastCGI-Cache
X-Cdn-Fetch
X-Kinja-Build
X-GoogleNews-Bot
X-Kinja-Revision
X-Kinja-Server
X-Use-Magma
X-Exp-Variant
X-Kinja
X-Exp-Id
X-Country-Code
X-Buckets
Verso
X-Goog-Hash
X-D2id
X-VARITI-CCR
Arr-Disable-Session-Affinity
X-Server-ID
Accept-CH-Lifetime
X-Vcap-Request-Id
X-Cached
X-ORACLE-DMS-ECID
Cache-Tag
X-Abt-Application-Version
X-Server-Name
X-Amz-Rid
X-Client-IP
X-Navigation-Version
Service-Worker-Allowed
X-Powered-By-Plesk
RTSS
X-Fastly-Request-ID
X-Px
Access-Control-Request-Method
X-Powered-CMS
Public-Key-Pins
X-TTL
X-MSEdge-Ref
X-Element-Page-Cache
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Upstream
X-Dw-Request-Base-Id
X-Middleton-Response
X-Middleton-Display
X-Sol
Display
Response
Pagespeed
X-Cache-TTL
X-NF-Request-ID
X-Version
S
X-Edge
X-Edge-Location-Klb
X-Kinsta-Cache
X-LLID
X-B3-TraceId-Primal
Mrf-Cache-Status
MRF-Tech
X-ECACHE
Realpath
X-Accel-Expires
X-Kraken-Routeconfig-Destination
X-Server-Lifecycle-Phase
X-Instrumentation
X-Kraken-Loop-Name
SPRequestGuid
X-SharePointHealthScore
X-Ttl
SPRequestDuration
X-Cache-Key
X-Jurisdiction
SPIisLatency
X-HP-Webp
X-T
X-MCACHE
X-Mid
X-Shield-Request-Id
X-Content-Security-Policy-Report-Only
X-PressLabs-Stats
Pinterest-Generated-By
X-DynaTrace
Pinterest-Version
X-Pinterest-Rid
X-Correlation-Id
X-ORACLE-DMS-RID
X-Forwarded-Proto
X-XRDS-Location
X-Litespeed-Cache
Edge-Cache-Tag
Fastcgi-Cache
X-Amz-Server-Side-Encryption
X-Recruiting
Charset
X-Content-Digest
TP-L2-Cache
TP-Cache
Nginx-Cache
X-Mg-S
X-Id
Filters
Front-End-Https
X-Request-Processing-Time
TCN
X-Request-Received
Alternate-Protocol
Server-Node
X-Forwarded-For
X-Logged-In
X-Ezoic-Cdn
Content-MD5
Cache-Tags
X-Geo-Country
Fusion-Component-Id
Fusion-Content-Source
Fusion-Content-Id
Fusion-Source
Fusion-Template-Id
Fusion-Deployment-Id
X-Release
X-Protected-By
X-Hostname
X-Origin-Upstream-Status
X-Amzn-Trace-Id
X-ASPNET-VERSION
X-Grace
X-Origin-Server
X-Www-Served-By
X-F-Cache
Cleartype
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-GUploader-UploadID
X-Goog-Metageneration
X-Goog-Stored-Content-Length
X-Amz-Replication-Status
X-Rid
X-Goog-Generation
Host
X-Ruxit-Js-Agent
X-Debug-Info
X-RateLimit-Remaining
X-Contextid
X-LB-Cache
X-Activity-Id
X-Az
X-AppVersion
X-HS-Cache-Config
X-HS-Content-Id
X-HS-Hub-Id
X-NWS-LOG-UUID
X-HS-Combine-CSS
Server-Name
X-Oneagent-Js-Injection
Section-Io-Cache
X-Frontend
X-Browser-Type
X-Erf-Bev-Bev-Is-Generated
X-Erf-Bev-Bev
X-Page-Id
MicrosoftSharePointTeamServices
X-Git-Hash
X-VCache
X-Cache-Age
X-Ser
X-Daa-Tunnel
X-Respond-Thread
X-Content-Options
X-Aspnetmvc-Version
Access-Control-Allow-Method
Accept-Charset
X-Hits
X-Upgrade-Enabled
X-Mobile-URL
X-DIS-Request-ID
X-Source
X-Signature
X-B-Cache
ServerID
X-Route-Name
Payment
Healthy
X-Request-Guid
X-Providence-Cookie
X-Is-Crawler
X-Varnish-Backend
X-Varnish-Grace
X-Varnish-Age
X-Aspnet-Duration-Ms
X-Flags
Viewport
X-Kong-Upstream-Latency
X-TT
X-Whom
X-FB-Debug
X-Kong-Proxy-Latency
X-Cache-Action
Paypal-Debug-Id
Node
X-B3-Sampled
X-WebKit-CSP-Report-Only
X-CACHE-GROUP
X-AOL-HN
Fastcgi-Useragent
X-App-Environment
DynaTrace
Version
X-Seen-By
X-Ab
X-N
X-Yandex-Sdch-Disable
X-Mobile
X-Load-Cache
DC
X-Type
X-HTML-Minification-Powered-By
X-Tt-Trace-Tag
X-Tt-Trace-Host
SRV
X-Distributor
Frame-Options
MS-CV
Retry-After
Filterid
X-Cache-Control
X-User-Agent
Ar-Sid
AR-PoweredBy
AR-Request-ID
AR-CACHE
AR-ATIME
X-Tec-Api-Root
X-Cache-Expired-At
X-Tec-Api-Origin
X-Tec-Api-Version
X-Fastcgi-Cache
X-Jobs
X-IPLB-Instance
X-Original-Request-Id
X-Response-Served-From
Refresh
X-Adobe-Loc
X-Adobe-Content
X-Real-IP
X-UUID
X-Page-View
X-Proxy-Cache-Status
X-Instance
X-Region
X-Debug-IsConnected
Access-Control-Request-Headers
X-Cluster-Name
X-Varnish-Server
X-Debug-IsPreview
X-Device-Type
X-RemovedCookies
X-Request-Handler-Origin-Region
X-Tumblr-Pixel-1
X-Content-Powered-By
X-Tumblr-Pixel-0
X-Cache-Time
X-B
Uber-Trace-Id
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
X-XRDS-LOCATION
X-G
X-Cacheable-TTL
X-Tumblr-User
X-Microsite
X-ProcessESI
X-Tumblr-Pixel
X-IPS-LoggedIn
X-Proxy
X-CDN-Forward
Ms-Operation-Id
X-RTag
X-Framework
NGB
X-FW-Static
X-FW-Server
X-FW-Hash
X-FW-Serve
X-FW-Dynamic
X-FW-Type
Amp-Access-Control-Allow-Source-Origin
X-Vgn-Hpd-Reason
X-NGENIX-Cache
X-Zen-Fury
X-Azure-Ref
Countrycode
X-App-Version
Cache-Status
X-RateLimit-Limit
X-Time
X-Node-Name
X-Wix-Request-Id
Section-Io-Origin-Status
X-Cache-Rule
Section-Io-Origin-Time-Seconds
X-Debug
X-Mg-Request-UUID
Section-Origin-Responded
Section-Io-Id
X-Accel-Buffering
X-Cache-Hit
X-Nginx-Cache
X-Ms-Request-Id
X-Ms-Version
X-Rendered-As
X-Is-Bot
Liferay-Portal
SD-X-WS
Cache
X-Oracle-Dms-Rid
X-Drupal-Cache-Tags
Referer-Policy
X-EdgeConnect-Cache-Status
X-App-Server
S-Cnection
X-Aws-Lambda-Call-Status
X-FireWall-Port
Country
Surrogate-Key
X-Environment-Context
X-L-Path
X-Yottaa-Metrics
X-Cache-Operation
X-Yottaa-Optimizations
CF-IPCountry
X-HP-Trace-Id
X-Revision
X-Parallel-Accel
Eomportal-Instance
X-TA-CDN-Provider
X-Endurance-Cache-Level
X-Timing-Wait
X-ES-SERVER
X-Loop
X-JoinUs
X-GG-Cache-Date
X-TNCMS
X-SaId
X-RN-RSRV
Selected-Fe
Meta-Geo
X-UPSTREAM-Address
X-Proxy-Build
X-Shopify-Stage
X-Cache-Type
X-Varnishpool
X-Xfnlog-Site
X-Sorting-Hat-PodId
X-Adobe-Source
X-Drupal-Cache-Contexts
X-Alternate-Cache-Key
X-ShopId
From-Origin
X-Storefront-Renderer-Rendered
X-Cache-TTL-Remaining
X-Sorting-Hat-ShopId
X-Request-Time
X-ShardId
X-Varnish-Beresp-Grace
X-VWS-Id
X-Varnish-Hostname
X-No-Session
X-ProxyCache-Key
X-Be
X-Proto
X-Backend-Host
X-AWS-Id
Protected
X-ProxyCache-Status
X-S-Maxage
X-PHP-Backend
X-NYM-Debug-Backend
X-Say-Cacheable
X-LJ-Flow-ID
X-Say-TTL
X-SayCDN-TTL
X-Origin-Date
Cache-Name
X-LAGOON
X-BYPASS-REASON
GEO-INFO
X-Pubstack
TWC-GeoIP-Country
TWC-Locale-Group
Webcakes-App-Name
TWC-Privacy
TWC-Device-Class
TWC-Connection-Speed
Cache-Tv-Group
Fastly-SSL
Property-Id
ServedBy
Webcakes-App-Version
Webcakes-Region
X-Origin-Hint
X-OCL
X-PCL
X-RCS-CacheZone
X-R9-Blue-Green-Version
X-Server-W
X-Handled-By
X-Akamai-Edgescape
X-Cache-Server
X-UA-Device-Type
X-FB-TRIP-ID
Apigw-Requestid
TWC-GeoIP-LatLong
X-Sql-Duration-Ms
X-Sql-Count
X-Human
Azure-SiteName
Azure-SlotName
Azure-RegionName
X-Via-Fastly
X-Access
Azure-InstanceId
Decoy-Debug-Status
X-Backend-Name
X-Tumblr-Pixel-2
Decoy-Debug-TTL
X-Section
X-PHP-Host
Count-Hit
X-Hosted-By
Decoy-Debug-Key
X-Hl-Ver
Country-Code
Mn-Server-Ip
X-Format
Azure-Version
X-Labrador-Cache-Channel
X-ApacheServer
X-Hyper-Cache
X-PERF
X-Web-Node
Akamai-GRN
X-Uri
X-FW-Version
X-Status
X-TEC-API-ROOT
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-B3-SpanId
Xserver
X-Redis-Cache
Nel
X-ServerID
X-Time-Microsecs
X-Cache-PHP
X-Ua-Device
X-Cluster-Node
X-Servername
X-ATG-Version
X-TT-LOGID
X-Trace-Id
X-CSRF-Token
OT-Force-Account-Verify
X-Tumblr-Pixel-3
X-Content-Age
X-WA-Info
Cross-Origin-Opener-Policy
X-Azure-Ref-OriginShield
X-Detected-As
X-Rule
X-MP-GENERATED-AT
Backend
X-Generation-Time
X-Cache-Host
X-Varnish-Cache-Hits
Web-Mar-Node
X-CS
X-Cached-By
X-Akamai-Transformed
X-Cache-Enabled
X-Bc-Bl
X-Varnish-Hits
X-Soup
X-APP-VERSION
X-Edge-Location
X-Datadome
X-Cache-Ttl
X-Mode
Ec-Rule-Version
Content-Secure-Policy
Cross-Origin-Window-Policy
X-Info
X-Microcachable
X-Amz-Apigw-Id
X-Amzn-Remapped-Content-Length
X-Amzn-RequestId
X-Varnish-Beresp-Status
X-Ua
X-Via-JSL
S-Rt
X-Varnish-Beresp-Ttl
X-Cache-NGX
X-SRV
X-Cache-Grace
SID
Url
X-Debug-Cache
X-Origin-TTL
X-Magnolia-Registration
X-Storage
X-Origin-CC
X-Platform
X-Air-Trace-Id
X-Air-Source
X-Proxied
X-NWS-UUID-VERIFY
X-Forwarded-Host
Upgrade-Insecure-Requests
X-Locale
X-Air-Hostname
X-Routing-Service
X-Zipkin-Id
X-Extlb
X-B3-Traceid
X-DataDome
Source
A
CDN-Uid
MD5-Digest
Expiry
CDN-Cache
CDN-RequestId
CDN-EdgeStorageId
DCR-Decision-By
DCR-Processing-Time-Ms
Fastly-SWR
Apple-News-Services-Handled
Apple-News-Services-Host
BehaviorPad-Version
Fastly-SIE
CDCHOST
Fastcgi-X-Cache-Version
Apple-News-Services-Request-Url
CDN-PullZone
M-TraceId
CDN-RequestCountryCode
Host-ID
Apple-News-Services-Parsed-Url
CDN-CachedAt
X-Cache-Bucket
X-Platform-Server
X-PBS-Appsvrname
X-Processor
X-Ratelimit-Reset
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-PAYTM-SRV-ID
X-Orig-Expires
X-From
X-Forwarded-Path
X-GoCache-CacheStatus
X-NAPM-TraceId
X-NU-AKA-ACS-Version
X-Request-URI
X-Rewrite-Enabled
X-Vdms-Version
X-Tenant
X-VG-WebCache
X-VG-WebServer
X-Vtex-Remote-Cache
X-Vtex-Processado-Em
X-SRCache-Key
X-Shop-Environment
X-S
X-Rojux
X-S-Cookie
X-ScT
X-Session-Fingerprint
X-External-Request-Id
X-Epic-Correlation-Id
X-A
T-Server
X-A-Ccd
X-A-Dcw
X-A-Wwc
X-A-Dgt
Surrogated-Key
State
Odigeo-Trace-Id
Mobile-Detection-Method
Path
Rendered-Blocks
Req-Svc-Chain
X-Aed
X-Aicache-OS
X-Connection-Hash
X-Clientip
X-D
X-Destination
X-Developer
X-CF-Lambda-Version
X-CF-Lambda-Fn
X-ARC
X-Application
X-B-Cookie
X-BCube-Filmed-By
X-Cache-NE
Meta-Geo-Continent
X-A-Dam
X-Unique-ID
X-GEO
AMP-Access-Control-Allow-Source-Origin
X-Dc
X-Cms-Context
X-Cache-Debug
X-Branch-Name
X-Cache-Tags
X-DPWN-IS-SECURE
X-Has-Esi
X-Fastly-Backend
X-Envoy-Decorator-Operation
X-Device-Os
X-Core-Value
X-Backend-State
Origin
NGX
L
Kp-EeAlive
PB-PID
PB-RID
X-Hash
UCS
Platform
Pics-Label
X-Bip
X-JWT-State
X-Thanos
X-SVT-ORM-VERSION
X-SVT-ORM-RULES
X-Sigma-Backend
X-TrackingId
X-Var-Ttl
X-AIR-PT
X-VServer
X-VG-TLSProxy
X-Variation
X-Sigma
X-Service
X-LI-UUID
X-Li-Pop
X-Li-Fabric
Is-Eu
X-Loc
X-Origin-Expires
X-Rocket-Build-Number
X-Request-UUID
Server-Info
X-Is-Gdpr
X-DC
Content-Disposition
Cache-Host
Adler-Geo
X-Site-Version
Esi-Enabled
DSUID
Fastly-Backend-Name
Cmsid
Fastly-Drupal-HTML
Cmstype
Arc-Version
C-Via
X-Tb
User-Cache-Control
X-EC-Lua
Cache-Key
X-DefHash
X-Clara-WADP
X-Developers
X-VC-Cache
Vix-Hermes-Req-Id
X-Vdms-Path
X-DefElseHash
Wxu-Next-Commit
Wxu-Next-Hostname
Wxu-Next-Region
X-Forwarded-Site
Cf-Device-Type
X-CGP
X-Csrf-Jwt
X-Fastly-Cache
X-Cluster
X-Fmm-Version
X-Varnish-Remaining-TTL
X-Level-Front-Cache
X-Served-From
CacheControlHeader
X-SIPLIST1
X-HN
X-Location
X-Scheme
X-Policy
X-Proxy-Upstream
X-Origin
X-Nginx-Cache-Key
X-GeoIP-City
X-GeoIP
X-Varnish-CookieINHashed-On
X-Fetched-On
X-FC-Vary-Parameters
X-VarnishDD-TTL
X-Varnish-CookieHashed-On
X-Thinkindot-L3
X-Geo-Header
X-Generated-On
X-Generated-In
X-Gamma-Serve
X-Eu-Site
X-Cache-Info
L5d-Success-Class
X-Ftr-Request-Id
Location
Locid
Release
IsBot
Ha-Gx-Prefs
Server-Hostname
HA-Ipaddr
Server-Ext
X-Conf
PFcat
NM-Fastcgi-Cache
X-VHOST
Memcached
X-WADP-Cache
X-Amz-Meta-S3cmd-Attrs
X-Request-Host
True-Client-Country-4JS
Pagetype
Fastcgi-Cache-TTL
Sever-Int
Server-Host
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
Thinkindot-Control
X-Men
Gh-Request-Id
TDXMobile
X-Owner
X-Irp-Debug
X-Hnp-Log
X-Skip-Cache
X-Gzip
X-Wikidot-Backend
X-Accel-Expires-Debug
X-Sucuri-ID
X-Old-Content-Length
V-Age
X-Block-Status
X-Ratelimit-Limit
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Slack-Backend
X-Generated-By
X-Wikidot-Static-Cache
X-Unique-Id
X-Date
X-Req
X-Mvc-Supplant-Cachable
AKAMAI
Arc-Country
X-Gen-Mode
X-BBC-Edge-Cache-Status
Svr
X-Micro-Cache
X-Esi-Check
X-Cache-Id
DataCenter
Who
X-Srv
Webserver
X-Viewer-Country
X-Ckpd-Fst-Backend
X-Qloud-Router
X-RateLimit-Remaining-Second
CPC-Cache
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
X-Planisys-CDN-TTL
Mail-Subject
VNS-Age
NtCoent-Length
We-Hiring
VNS-Cache
X-RateLimit-Limit-Second
CPC-Age
X-Via-NSCOPI
X-User
X-Via-Popv
X-Via-Poph
X-Worker
X-Via-Popn
X-Mvc-Supplant-OutputCached
X-PF-Uncompressing
Cache-Hits
MIME-Version
X-Servedbyhost
X-Zone
X-Auto-Login
X-Ratelimit-Remaining
X-Minions-Version
X-Tx-Id
X-HS-Content-Campaign-Id
X-V-Cache
X-Varnish-Url
X-NC
X-NCache
X-Vc
X-Qnm-Cache
X-M-Reqid
X-M-Log
XServer
X-Platform-Processor
X-Platform-Router
X-Rocket-Nginx-Serving-Static
X-Render-Time
X-LSADC-Cache
Powered-By-ChinaCache
My-App
X-LB-ID
X-Refresh
X-Platform-Cluster
X-Webkit-CSP-Report-Only
X-Traceid
X-Wa
X-ID
X-App
X-Internal-Host
Server-ID
Time
X-SD-PageType
Memory
X-Varnish-Ttl
X-Cache-Remote
WebServer
X-Datadog-Parent-Id
X-Datadog-Trace-Id
X-Pass-Why
X-Content
X-ZONE
X-Ua-Browser
Environment
X-Datadog-Sampling-Priority
X-Newrelic-Synthetics
X-BBC-Origin-Response-Status
X-Nyt-Route
X-Origin-Time
X-Gdpr
X-API-Version
X-TX-ID
X-NodeID
X-VCL-Version
X-Webkit-Csp
X-PJAX-URL
X-TIME
X-Cache-Var-Map
X-CACHE-KEY
X-Cache-Var
X-Server-IP
X-Via-Ucdn
X-Cache-Config
X-OVcl
X-OVcl-Cache
Cluster
HostName
Hostname
Candidate-Md5Url
Cf-Bgj
X-NewRelic-App-Data
X-LI-Proto
X-Pod-Name
X-TraceId
Datacenter
X-Backend-TTL
X-CLOUD-TRACE-CONTEXT
Magicmarker
GeoIp-Country-Code
Geoip-Latitude
N-Cache
Resin-Trace
X-Edge-Pop
Geo-Info
X-ElasticPress-Query
X-Tb-Optimization-Total-Bytes-Saved
X-Correlation-ID
X-AB
X-Method
Web-Mar-Region
DB-Nickname
X-Dispatcher-Server
Ohc-File-Size
Tcn
X-HITS
GeoIP-Country-Code
X-Origin-Response-Time
X-Geo
X-CACHE-AGE
GeoIP-Latitude
X-Dynatrace
Onion-Location
Servername
Ssr
X-IP
X-Akamai-Pragma-Client-IP
X-MSEdge-Flight
X-MSEdge-Features
X-Varnish-Beresp-TTL
X-Varnish-Cacheable
X-NODE
Proxy-Connection
WWW-Authenticate
X-EIG-Tracking-Id
X-Li-Proto
Cdn
LB
X-Wix-Viewer-Type
Cf-Ipcountry
X-Node-Id
X-MG-S
X-HostName
X-Fpc
X-ND-Cache
X-HS-Status
X-Trv-Group
X-Nc
X-DynaTrace-JS-Agent
CF-Cached-On
X-Tid
X-Vcl-Version
X-TIM-N
Redirect-Candidate
CDN
Lb
X-Dynatrace-Js-Agent
WZWS-RAY
X-Via-CDN
X-Cs
Tracecode
X-Fastly-Backend-Reqs
X-APP
X-Up
Env
Cteonnt-Length
X-Pjax-Url
X-Request-Start
Sid
Server-Id
X-Webkit-Csp-Report-Only
URI
X-NGINX-Cache
X-ServerName
Is-Us
Pramga
X-Reqid
X-WA
X-Cache-Date
X-Cdn-Origin
X-URL
X-Tt-Logid
X-VC
X-Check-Cacheable
X-Sn-Servicetimems
X-Amz-Meta-Cb-Modifiedtime
Rt-Fastcgi-Cache
X-Lb-Id
X-Xrds-Location
X-CSRF-TOKEN
X-Esi
Ohc-Cache-HIT
VivaBuild
X-Provided-By
W
X-Core-Mission
X-Cache-Backend
X-Via-PopN
X-SERVER-NAME
X-IN-APIGATEWAYSSL
X-Via-PopH
X-Fastly-Request-Id
X-Via-PopV
X-IN-APIGATEWAY
Viewtype
X-UnsetCookies
Mime-Version
CloudFront-Viewer-Country
X-LiteSpeed-Cache-Control
Server-Ttl
X-SN
CountryCode
X-ServedByHost
X-Cache-Expires
X-RAMCache
X-FTR-Request-ID
Shield-Pop
Machine
X-Cache-ASPX
X-Acquia-Application-Trace
X-Acquia-Purge-Tags
X-Acquia-Site
X-Acquia-Application-UUID
X-Varnish-Authentication
X-Fastly-Cache-Hits
X-Contensis-Viewer-Groups
X-Dw-Trace-Id
X-FORWARDED-FOR
CACHE
X-Yottaa-OS
X-Pad
X-Pf-Uncompressing
X-SB
X-Swift-Error
X-Country-Code-Real
X-StackifyID
WP-Super-Cache
X-Webstats-RespID
X-FTR-Realm
X-Edge-POP
X-Hcs-Proxy-Type
X-Region-Sid
X-Sucuri-Cache
X-CUA
X-CCDN-Origin-Time
X-Cdn-Request-ID
X-Cache-Status-Check
X-CCDN-CacheTTL
On-Server
Xet-Cookie
Ohc-Response-Time
X-DB
X-FTR-Cache-Status
Vha6-Origin
X-Action
FSS-Cache
X-FTR-Backend
X-FTR-Backend-Server
X-FTR-Balancer
X-RSL
X-FTR-DC
X-RPS
X-RPM
X-DSS
X-DW
X-DI
X-Air-Pt
X-Cdn-Forward
ServerName
X-C
X-FTR-Expires
X-ElasticPress-Search
X-Oss-Storage-Class
X-MiniProfiler-Ids
X-TH-Server
X-Snapshot-Date
X-Swa-Ws
Content-Script-Type
X-Oss-Hash-Crc64ecma
X-Oss-Object-Type
X-Oss-Request-Id
X-Oss-Server-Time
Req-ID
Content-Style-Type