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
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Last-Modified
Cf-Request-Id
CF-RAY
CF-Cache-Status
Accept-Ranges
Link
ETag
X-XSS-Protection
Pragma
Expect-CT
X-Powered-By
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-UA-Compatible
X-Served-By
X-Timer
X-Download-Options
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Xss-Protection
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-Drupal-Cache
X-Check
X-Cache-Status
X-Generator
X-Cacheable
Timing-Allow-Origin
X-Request-ID
X-DNS-Prefetch-Control
P3p
X-Content-Security-Policy
X-Iinfo
Status
Feature-Policy
Content-Encoding
X-AspNetMvc-Version
X-CDN
X-Envoy-Upstream-Service-Time
Access-Control-Expose-Headers
X-Ua-Compatible
Upgrade
X-Dns-Prefetch-Control
Access-Control-Max-Age
X-Drupal-Dynamic-Cache
X-Via
X-Ws-Request-Id
Keep-Alive
Server-Timing
Request-Context
X-Robots-Tag
X-AH-Environment
X-Hacker
X-Server
X-Age
X-Turbo-Charged-By
X-Proxy-Cache
X-Cache-Group
X-Server-Powered-By
X-Amz-Request-Id
X-Backend
X-Amz-Id-2
Host-Header
EagleId
Report-To
X-Nginx-Cache-Status
X-LiteSpeed-Cache
X-Rq
X-Varnish-Cache
Grace
X-Page-Speed
X-UA-Device
X-Pingback
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
EagleEye-TraceId
X-Device
X-Vhost
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Amz-Version-Id
NEL
X-Dispatcher
Cf-Railgun
X-Host
X-OneAgent-JS-Injection
X-WebKit-CSP
X-Cache-Spec
X-Server-Id
X-CST
X-Node
X-Backend-Server
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
Request-Id
Allow
Surrogate-Control
X-Readtime
Accept-CH
X-Akam-SW-Version
X-Response-Time
Accept-Ch-Lifetime
Xkey
X-Language
X-HW
X-Template
X-Application-Context
X-Country
Content-Location
X-Ac
X-Cache-Lookup
X-Cloud-Trace-Context
Rating
MS-Author-Via
X-Url
X-Ruxit-JS-Agent
X-Webkit-CSP
Edge-Control
X-Clacks-Overhead
X-PC
X-TtlSet
X-Vname
X-Mod-Pagespeed
X-Varnish-TTL
X-Trace
Fastly-Restarts
X-Content-Type
X-Buckets
X-Rack-Cache
X-MS-InvokeApp
X-Origin-Cache
X-ESI
X-GitHub-Request-Id
Accept-Ch
X-B3-TraceId
X-Country-Code
X-Goog-Hash
X-Cnection
X-VARITI-CCR
Verso
X-D2id
X-ORACLE-DMS-ECID
Arr-Disable-Session-Affinity
X-Cdn-Fetch
X-Exp-Variant
X-Kinja-Server
X-Use-Magma
X-Kinja-Revision
X-Kinja-Build
X-GoogleNews-Bot
X-Exp-Id
X-Kinja
X-FastCGI-Cache
Cache-Tag
X-Px
X-Vcap-Request-Id
Service-Worker-Allowed
X-Cached
Accept-CH-Lifetime
X-Abt-Application-Version
X-Server-Name
X-Server-ID
X-Amz-Rid
X-Client-IP
X-Navigation-Version
X-Cache-TTL
Public-Key-Pins
X-TTL
X-SRCache-Fetch-Status
X-SRCache-Store-Status
RTSS
X-Powered-By-Plesk
X-MSEdge-Ref
Access-Control-Request-Method
X-Element-Page-Cache
X-Dw-Request-Base-Id
X-Powered-CMS
X-NF-Request-ID
X-Version
X-Upstream
X-Fastly-Request-ID
Pagespeed
X-Middleton-Response
Display
X-Middleton-Display
X-Sol
Response
S
X-Edge-Location-Klb
X-Kinsta-Cache
X-Edge
X-LLID
X-Ruxit-Js-Agent
X-Kraken-Routeconfig-Destination
X-Instrumentation
X-Kraken-Loop-Name
X-Server-Lifecycle-Phase
X-Cache-Key
X-ECACHE
Mrf-Cache-Status
X-B3-TraceId-Primal
MRF-Tech
X-Accel-Expires
X-Oneagent-Js-Injection
X-Shield-Request-Id
Pinterest-Generated-By
X-Pinterest-Rid
X-Jurisdiction
X-HP-Webp
Pinterest-Version
X-Correlation-Id
X-ORACLE-DMS-RID
X-Aspnetmvc-Version
X-DynaTrace
Realpath
X-T
X-PressLabs-Stats
X-Litespeed-Cache
X-SharePointHealthScore
SPRequestGuid
X-Mid
X-MCACHE
X-XRDS-Location
Edge-Cache-Tag
X-Content-Security-Policy-Report-Only
SPIisLatency
X-Ttl
SPRequestDuration
Fastcgi-Cache
X-Amz-Server-Side-Encryption
Nginx-Cache
X-Mg-S
X-Content-Digest
X-Forwarded-Proto
TP-L2-Cache
TP-Cache
X-Recruiting
X-Id
X-Request-Received
X-Request-Processing-Time
Front-End-Https
TCN
Charset
Server-Node
Alternate-Protocol
X-Logged-In
Filters
X-Geo-Country
Content-MD5
X-Forwarded-For
X-Ezoic-Cdn
X-Protected-By
Fusion-Source
Fusion-Template-Id
Fusion-Deployment-Id
Fusion-Component-Id
Fusion-Content-Id
Fusion-Content-Source
X-ASPNET-VERSION
Cache-Tags
X-Hostname
X-Ab
X-NWS-LOG-UUID
X-Amzn-Trace-Id
X-Origin-Upstream-Status
X-Debug-Info
X-Grace
X-Goog-Metageneration
X-Goog-Storage-Class
X-GUploader-UploadID
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Www-Served-By
Cleartype
X-LB-Cache
X-F-Cache
X-Amz-Replication-Status
X-Az
X-Origin-Server
X-Activity-Id
X-HS-Content-Id
X-HS-Hub-Id
X-HS-Cache-Config
X-AppVersion
X-Rid
X-HS-Combine-CSS
Host
X-Daa-Tunnel
X-Contextid
X-Git-Hash
X-Ua-Device
X-Page-Id
X-Browser-Type
X-Erf-Bev-Bev-Is-Generated
Section-Io-Cache
X-Erf-Bev-Bev
X-VCache
Server-Name
MicrosoftSharePointTeamServices
X-Ser
X-Content-Options
X-Upgrade-Enabled
X-Frontend
X-Kong-Proxy-Latency
X-Cache-Age
X-Kong-Upstream-Latency
Access-Control-Allow-Method
X-RateLimit-Remaining
Accept-Charset
ServerID
X-Hits
X-Source
X-Mobile-URL
X-Release
X-DIS-Request-ID
X-Route-Name
X-Request-Guid
X-Aspnet-Duration-Ms
X-Varnish-Age
X-Flags
X-Providence-Cookie
X-Is-Crawler
X-CACHE-GROUP
X-Cache-Action
X-B-Cache
X-WebKit-CSP-Report-Only
X-Signature
Healthy
Viewport
X-B3-Sampled
X-Varnish-Grace
X-Varnish-Backend
X-Yandex-Sdch-Disable
Paypal-Debug-Id
Payment
X-Whom
X-FB-Debug
DynaTrace
X-TT
X-AOL-HN
Fastcgi-Useragent
Node
X-App-Environment
X-Fastcgi-Cache
X-Respond-Thread
X-Load-Cache
X-Mobile
X-Tt-Trace-Tag
DC
X-Tt-Trace-Host
Filterid
X-Tec-Api-Origin
X-Tec-Api-Version
X-Tec-Api-Root
X-Seen-By
Version
X-Distributor
X-User-Agent
SRV
X-HTML-Minification-Powered-By
X-Cache-Control
Frame-Options
Retry-After
X-N
X-Type
X-HP-Trace-Id
X-Jobs
Refresh
MS-CV
X-Node-Name
X-FW-Serve
X-FW-Static
X-FW-Type
X-FW-Hash
X-FW-Server
X-FW-Dynamic
X-Response-Served-From
X-Original-Request-Id
X-NGENIX-Cache
X-XRDS-LOCATION
X-UUID
X-Azure-Ref
Amp-Access-Control-Allow-Source-Origin
X-Proxy-Cache-Status
X-Page-View
X-Adobe-Loc
NGB
X-Cache-Expired-At
X-Adobe-Content
X-Aws-Lambda-Call-Status
X-Varnish-Server
X-Instance
X-Real-IP
X-Debug-IsPreview
X-Debug-IsConnected
X-IPLB-Instance
X-B3-Traceid
X-Cluster-Name
X-ProcessESI
X-Region
X-Cacheable-TTL
X-B
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
X-RemovedCookies
X-G
X-Tumblr-Pixel-1
X-Tumblr-Pixel-0
X-Tumblr-User
X-Tumblr-Pixel
X-Vgn-Hpd-Reason
X-RTag
Ms-Operation-Id
Access-Control-Request-Headers
X-Cache-Time
X-CDN-Forward
X-Framework
X-Device-Type
X-Content-Powered-By
X-Proxy
X-Parallel-Accel
X-Cache-Hit
SD-X-WS
X-Zen-Fury
X-Cache-Rule
Liferay-Portal
Referer-Policy
X-IPS-LoggedIn
Uber-Trace-Id
X-Is-Bot
X-Drupal-Cache-Tags
X-Rendered-As
X-Ms-Version
X-Ms-Request-Id
Cache-Status
X-Wix-Request-Id
X-Oracle-Dms-Rid
X-Time
Countrycode
X-Mg-Request-UUID
X-EdgeConnect-Cache-Status
Section-Io-Id
Section-Io-Origin-Status
Section-Io-Origin-Time-Seconds
Section-Origin-Responded
X-App-Server
X-L-Path
X-Environment-Context
X-Revision
X-Debug
S-Cnection
X-Yottaa-Optimizations
Country
X-Yottaa-Metrics
X-TA-CDN-Provider
CF-IPCountry
X-APP-VERSION
X-Accel-Buffering
Count-Hit
X-Cache-Operation
X-RateLimit-Limit
X-FW-Version
X-Drupal-Cache-Contexts
Akamai-GRN
X-JoinUs
X-RN-RSRV
X-SaId
X-Endurance-Cache-Level
X-ES-SERVER
X-GG-Cache-Date
X-Microsite
X-Request-Handler-Origin-Region
Meta-Geo
X-UPSTREAM-Address
X-Adobe-Source
X-Cache-TTL-Remaining
X-Cache-Type
X-SayCDN-TTL
X-LAGOON
X-Loop
From-Origin
X-Say-Cacheable
Cache
X-TNCMS
X-Say-TTL
X-Nginx-Cache
X-Sql-Count
X-Human
X-PCL
X-Sql-Duration-Ms
Azure-SiteName
Fastly-SSL
X-OCL
Country-Code
Azure-RegionName
X-S-Maxage
Surrogate-Key
X-NYM-Debug-Backend
GEO-INFO
X-Varnish-Beresp-Grace
Azure-SlotName
Azure-InstanceId
X-Request-Time
X-R9-Blue-Green-Version
Azure-Version
X-B3-SpanId
Decoy-Debug-TTL
X-AWS-Id
Cache-Tv-Group
Protected
X-Be
Decoy-Debug-Key
X-Shopify-Stage
Apigw-Requestid
X-Alternate-Cache-Key
Cache-Name
X-ProxyCache-Status
X-Proto
Decoy-Debug-Status
X-PHP-Host
X-Origin-Date
X-LJ-Flow-ID
X-BYPASS-REASON
X-No-Session
X-Varnish-Hostname
X-Varnishpool
X-Via-Fastly
X-VWS-Id
X-ProxyCache-Key
X-ShardId
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-RCS-CacheZone
X-Hosted-By
X-ShopId
X-Handled-By
X-Labrador-Cache-Channel
X-Storefront-Renderer-Rendered
X-Status
X-Pubstack
X-Timing-Wait
Eomportal-Instance
Selected-Fe
X-Proxy-Build
X-UA-Device-Type
X-Tumblr-Pixel-2
ServedBy
X-Origin-Hint
X-PERF
Property-Id
X-Web-Node
X-Akamai-Edgescape
X-Access
Webcakes-App-Version
X-Redis-Cache
X-ApacheServer
X-Cache-Server
X-Cluster-Node
X-Format
Webcakes-App-Name
X-Section
TWC-GeoIP-LatLong
TWC-GeoIP-Country
TWC-Device-Class
TWC-Locale-Group
X-Server-W
X-Xfnlog-Site
TWC-Privacy
TWC-Connection-Speed
Webcakes-Region
AR-PoweredBy
AR-CACHE
AR-Request-ID
Ar-Sid
X-Backend-Host
X-PHP-Backend
AR-ATIME
X-Time-Microsecs
X-Uri
Nel
Mn-Server-Ip
X-Hyper-Cache
Cross-Origin-Opener-Policy
X-FB-TRIP-ID
X-Servername
X-App-Version
X-Backend-Name
OT-Force-Account-Verify
X-Hl-Ver
X-ServerID
X-Tumblr-Pixel-3
X-Detected-As
X-ATG-Version
Cross-Origin-Window-Policy
X-Azure-Ref-OriginShield
Web-Mar-Node
X-Ua
X-Cache-Host
X-FireWall-Port
X-Varnish-Cache-Hits
X-Generation-Time
X-Cache-PHP
Source
X-Varnish-Hits
X-Content-Age
X-Ratelimit-Remaining
Content-Secure-Policy
Ec-Rule-Version
X-Ratelimit-Limit
X-Datadome
Backend
X-Via-JSL
X-SRV
X-Ua-Browser
X-Content
X-Akamai-Transformed
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-TEC-API-ROOT
X-MP-GENERATED-AT
X-Trace-Id
X-Forwarded-Host
X-Air-Trace-Id
X-Amzn-RequestId
X-Air-Hostname
X-Air-Source
X-Amz-Apigw-Id
Upgrade-Insecure-Requests
X-Cdn
X-Microcachable
X-Cache-Grace
X-WA-Info
X-TT-LOGID
X-CS
X-Locale
X-NWS-UUID-VERIFY
X-Amzn-Remapped-Content-Length
X-Soup
X-Dc
X-Mode
Url
Xserver
X-Cache-Enabled
X-Edge-Location
X-CSRF-Token
X-Site-Version
X-Origin-TTL
X-Origin-CC
X-Unique-Id
X-Varnish-Beresp-Ttl
X-Bc-Bl
X-Rule
Content-Disposition
X-Info
X-Tenant
X-GEO
X-Varnish-Beresp-Status
X-Magnolia-Registration
S-Rt
X-Routing-Service
X-Proxied
X-Tb
X-Zipkin-Id
X-Extlb
X-Conf
Apple-News-Services-Handled
Path
X-Debug-Cache
X-Destination
T-Server
Apple-News-Services-Parsed-Url
X-Developer
X-Connection-Hash
Apple-News-Services-Host
X-D
Req-Svc-Chain
BehaviorPad-Version
X-BBC-Edge-Cache-Status
X-A-Dgt
X-A-Dcw
X-B-Cookie
X-A-Wwc
X-AIR-PT
X-Aed
X-Application
X-ARC
X-BCube-Filmed-By
X-Cache-Bucket
X-A-Ccd
X-A
A
Surrogated-Key
X-CF-Lambda-Version
X-CF-Lambda-Fn
X-Aicache-OS
X-Cache-NE
X-A-Dam
Rendered-Blocks
X-NU-AKA-ACS-Version
X-S
X-Rojux
X-S-Cookie
DCR-Decision-By
X-ScT
X-Rewrite-Enabled
MD5-Digest
X-Ratelimit-Reset
Meta-Geo-Continent
X-Rebelmouse-Cache-Control
CDCHOST
X-Request-URI
DCR-Processing-Time-Ms
X-Session-Fingerprint
Fastcgi-X-Cache-Version
X-VG-WebServer
X-Vtex-Processado-Em
X-Vtex-Remote-Cache
Fastly-SIE
X-VG-WebCache
Fastly-SWR
X-SRCache-Key
X-Shop-Environment
Host-ID
Expiry
X-Vdms-Version
X-Processor
X-Rebelmouse-Surrogate-Control
X-Forwarded-Path
CDN-RequestId
CDN-Uid
CDN-Cache
X-Platform-Server
CDN-CachedAt
X-Ftr-Request-Id
CDN-PullZone
CDN-RequestCountryCode
CDN-EdgeStorageId
Odigeo-Trace-Id
X-Orig-Expires
Mobile-Detection-Method
X-PAYTM-SRV-ID
X-PBS-Appsvrname
Apple-News-Services-Request-Url
User-Cache-Control
X-Epic-Correlation-Id
X-External-Request-Id
X-NAPM-TraceId
X-M-Reqid
X-M-Log
X-EC-Lua
X-Tx-Id
X-Storage
X-DataDome
X-NCache
X-Cached-By
NGX
L
Platform
Origin
Pics-Label
State
Is-Eu
X-Li-Fabric
X-Request-UUID
X-Scheme
X-Proxy-Upstream
X-Origin-Expires
X-Loc
X-Men
X-Service
X-SVT-ORM-RULES
X-VServer
X-Worker
X-VG-TLSProxy
X-Variation
X-SVT-ORM-VERSION
X-TrackingId
X-LI-UUID
X-Li-Pop
X-Core-Value
X-Date
X-Cms-Context
X-Cache-Info
X-Accel-Expires-Debug
X-Backend-State
X-DPWN-IS-SECURE
X-Envoy-Decorator-Operation
X-JWT-State
Fastly-Drupal-HTML
X-Is-Gdpr
X-Has-Esi
X-Fastly-Cache
X-From
UCS
X-Cache-Debug
Cache-Host
Cache-Key
XServer
Fastly-Backend-Name
X-Qnm-Cache
SID
Adler-Geo
X-Cache-NGX
X-Micro-Cache
AMP-Access-Control-Allow-Source-Origin
X-RateLimit-Limit-Second
X-LSADC-Cache
Fastcgi-Cache-TTL
X-Origin
X-Location
X-Auto-Login
X-Nginx-Cache-Key
X-Old-Content-Length
X-RateLimit-Remaining-Second
X-Req
X-Esi-Check
True-Client-Country-4JS
Thinkindot-Control
Thinkindot-CacheControl-Type
X-Served-From
X-Rocket-Build-Number
VNS-Cache
VNS-Age
Esi-Enabled
X-Level-Front-Cache
X-Hnp-Log
X-Forwarded-Site
X-Gamma-Serve
X-Gen-Mode
X-Generated-By
X-Fastly-Backend
X-DefElseHash
X-Device-Os
X-Developers
DataCenter
X-DefHash
X-Cluster
X-Clientip
X-HN
X-Branch-Name
X-Block-Status
X-Bip
X-Cache-Id
X-Gzip
X-Generated-On
X-Ckpd-Fst-Backend
X-Geo-Header
X-Cache-Tags
Thinkindot-CacheControl
Vix-Hermes-Req-Id
Cmsid
X-Varnish-CookieINHashed-On
Cmstype
X-Varnish-Remaining-TTL
X-Varnish-CookieHashed-On
Cf-Device-Type
PFcat
PB-RID
TDXMobile
X-Thinkindot-L3
CPC-Age
X-VarnishDD-TTL
X-Viewer-Country
X-Wikidot-Backend
IsBot
X-Wikidot-Static-Cache
Location
Locid
X-VC-Cache
CPC-Cache
X-Via-NSCOPI
M-TraceId
X-Thanos
PB-PID
Server-Ext
X-Slack-Backend
C-Via
Server-Hostname
X-Sigma
X-Skip-Cache
Arc-Version
Arc-Country
Server-Host
AKAMAI
X-SIPLIST1
Svr
X-Sigma-Backend
Sever-Int
X-Amz-Meta-S3cmd-Attrs
X-Render-Time
X-Eu-Site
NtCoent-Length
X-Generated-In
X-Vdms-Path
X-Fetched-On
X-FC-Vary-Parameters
X-Platform-Router
X-GeoIP-City
X-Planisys-CDN-Rules
X-Mvc-Supplant-Cachable
X-Planisys-CDN-TTL
X-Platform-Cluster
X-Platform-Processor
X-Owner
X-Sucuri-ID
X-Irp-Debug
X-Var-Ttl
X-Rocket-Nginx-Serving-Static
X-Planisys-CDN-Cache
X-GeoIP
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Hash
X-Platform
X-Policy
X-Request-Host
X-HS-Content-Campaign-Id
Ha-Gx-Prefs
Gh-Request-Id
Pagetype
X-Csrf-Jwt
Server-Info
CacheControlHeader
X-CGP
Memcached
Release
HA-Ipaddr
DSUID
Wxu-Next-Commit
Mail-Subject
Wxu-Next-Hostname
We-Hiring
Wxu-Next-Region
V-Age
L5d-Success-Class
NM-Fastcgi-Cache
Webserver
X-WADP-Cache
X-V-Cache
X-GoCache-CacheStatus
X-SD-PageType
X-Qloud-Router
X-Fmm-Version
X-Clara-WADP
X-Unique-ID
X-Cache-Remote
X-Cache-Var-Map
X-Cache-Var
Cache-Hits
X-DC
Environment
MIME-Version
X-Mvc-Supplant-OutputCached
X-Servedbyhost
X-NodeID
X-Datadog-Parent-Id
Kp-EeAlive
X-Datadog-Sampling-Priority
X-Gdpr
X-API-Version
X-Nyt-Route
X-Datadog-Trace-Id
X-PJAX-URL
X-Origin-Time
X-Srv
X-NC
X-Via-Popn
X-Via-Popv
X-Vc
X-Via-Poph
X-Via-Ucdn
X-Wa
X-Cache-Config
X-Pod-Name
X-PF-Uncompressing
X-BBC-Origin-Response-Status
X-User
X-Server-IP
Candidate-Md5Url
WebServer
X-Varnish-Ttl
Server-ID
Cluster
Memory
Time
X-ZONE
X-Zone
X-App
Who
X-TIME
X-Traceid
X-Refresh
X-Varnish-Url
X-VCL-Version
X-Webkit-Csp
X-Minions-Version
X-Internal-Host
X-CACHE-KEY
Onion-Location
HostName
Web-Mar-Region
GeoIp-Country-Code
X-Webkit-CSP-Report-Only
X-Newrelic-Synthetics
X-Pass-Why
X-NewRelic-App-Data
My-App
X-Edge-Pop
Geoip-Latitude
Powered-By-ChinaCache
N-Cache
X-ID
X-LB-ID
Resin-Trace
X-Tt-Logid
X-Esi
X-Cache-Ttl
X-Tb-Optimization-Total-Bytes-Saved
Servername
X-ElasticPress-Query
X-CLOUD-TRACE-CONTEXT
X-LI-Proto
X-TraceId
X-Akamai-Pragma-Client-IP
X-Varnish-Cacheable
Geo-Info
Datacenter
CDN
X-VHOST
WWW-Authenticate
X-Fastly-Request-Id
X-TX-ID
Tcn
Ohc-File-Size
X-Fpc
X-Dynatrace
X-EIG-Tracking-Id
X-OVcl
X-Origin-Response-Time
X-CACHE-AGE
X-HITS
X-OVcl-Cache
LB
Redirect-Candidate
X-TIM-N
X-Tid
X-Geo
X-NGINX-Cache
Cf-Bgj
Hostname
X-Backend-TTL
Proxy-Connection
Tracecode
X-Up
X-NODE
X-Varnish-Beresp-TTL
Magicmarker
X-Li-Proto
X-Dynatrace-Js-Agent
X-Correlation-ID
X-AB
X-Wix-Viewer-Type
X-CSRF-TOKEN
X-Method
Pramga
X-Request-Start
X-Cache-Date
X-HostName
Cdn
X-Dispatcher-Server
X-Cdn-Origin
X-Sn-Servicetimems
X-Cs
X-Amz-Meta-Cb-Modifiedtime
Cf-Ipcountry
CloudFront-Viewer-Country
Sid
X-Fastly-Backend-Reqs
GeoIP-Country-Code
X-Lb-Id
Is-Us
X-MSEdge-Features
X-MSEdge-Flight
X-Vcl-Version
X-Provided-By
CF-Cached-On
Server-Id
W
GeoIP-Latitude
X-HS-Status
X-IP
X-APP
X-Core-Mission
X-Cache-Expires
Ssr
X-COUNTRY
DB-Nickname
X-MG-S
Lb
X-UnsetCookies
X-WA
X-Webkit-Csp-Report-Only
WP-Super-Cache
X-Reqid
X-ServerName
Cteonnt-Length
X-FORWARDED-FOR
X-Sucuri-Cache
X-Check-Cacheable
X-Hcs-Proxy-Type
X-CCDN-CacheTTL
X-Via-PopV
X-Node-Id
X-Cache-Status-Check
X-CCDN-Origin-Time
X-Region-Sid
X-Via-PopH
X-Via-PopN
URI
Ohc-Cache-HIT
CountryCode
X-SERVER-NAME
X-Cache-Backend
X-DynaTrace-JS-Agent
X-Moov-T
X-ND-Cache
X-Trv-Group
X-VC
Xc-Version
X-Nc
X-Moov-Xdn-Version
WZWS-RAY
Env
X-SN
Shield-Pop
X-Ig-Push-State
Mime-Version
User-Agent
EpKe-Alive
X-Via-CDN
X-Pjax-Url
X-ServedByHost
X-Pad
X-Acquia-Purge-Tags
X-Acquia-Application-UUID
CACHE
X-Edge-POP
FSS-Cache
X-CUA
X-RAMCache
X-Amz-Meta-Opti
X-TRACE-ID
X-Acquia-Site
X-Acquia-Application-Trace
X-LiteSpeed-Cache-Control
X-Contensis-Viewer-Groups
X-Cache-ASPX
X-Varnish-Authentication
X-Fastly-Cache-Hits
X-Pf-Uncompressing
X-Nginx-Upstream-Cache-Status
X-Dw-Trace-Id
X-Swift-Error
Vha6-Origin
X-Webstats-RespID
HIT
X-Oss-Request-Id
X-Oss-Server-Time
X-Oss-Storage-Class
X-Parent-Response-Time
X-Oss-Object-Type
X-Oss-Hash-Crc64ecma
X-Action
On-Server
X-Dispatch
X-SB
Ohc-Response-Time
X-IN-APIGATEWAYSSL
X-RSL
X-RPS
X-StackifyID
X-IN-APIGATEWAY
Xet-Cookie
Server-Ttl
X-RPM
X-DW
X-Cdn-Request-ID
X-DB
X-DSS
X-DI
X-Cdn-Forward
X-Amzn-Remapped-X-Forwarded-For
X-Amzn-Remapped-User-Agent
X-Env-Sha256-Sig
X-Amzn-Remapped-Host
X-Env-Stack-Name
X-Snapshot-Date
X-Ftr-Viewer-Uri
X-Forwarded-Port
X-MiniProfiler-Ids
ServerName
X-Yottaa-OS
Content-Script-Type
Hit
VivaBuild
X-CF-Powered-By
Content-Style-Type
Rt-Fastcgi-Cache
Req-ID
Viewtype