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
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Accept-Ranges
Expect-CT
X-XSS-Protection
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Xss-Protection
X-Served-By
X-Download-Options
CF-Ray
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Request-ID
X-Request-Id
X-Permitted-Cross-Domain-Policies
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-DNS-Prefetch-Control
X-Check
X-Generator
X-Cache-Status
X-Cacheable
Timing-Allow-Origin
X-Iinfo
X-Envoy-Upstream-Service-Time
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
P3p
Access-Control-Max-Age
X-Via
Server-Timing
Request-Context
X-Robots-Tag
X-Turbo-Charged-By
X-UA-Device
X-Cache-Group
X-Amz-Request-Id
EagleId
X-Amz-Id-2
X-Backend
X-AH-Environment
X-Proxy-Cache
Keep-Alive
X-Ua-Compatible
X-Server
X-Ws-Request-Id
X-Age
Host-Header
X-Hacker
Cf-Edge-Cache
X-Vhost
X-Server-Powered-By
X-Rq
X-Dns-Prefetch-Control
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
Allow
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-OneAgent-JS-Injection
X-LiteSpeed-Cache
X-WebKit-CSP
X-Page-Speed
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
Cf-Apo-Via
X-Device
Cf-Railgun
Accept-CH
X-Aws-Lambda-Call-Status
X-Node
X-Pingback
X-Host
X-Ruxit-JS-Agent
X-Server-Id
EagleEye-TraceId
X-Nginx-Cache-Status
Surrogate-Control
X-Akam-SW-Version
X-Cache-Spec
Request-Id
X-Backend-Server
X-Readtime
X-Cache-Lookup
X-HW
X-Content-Security-Policy-Report-Only
Accept-Ch-Lifetime
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Cloud-Trace-Context
X-Trace
X-Application-Context
X-Response-Time
Fastly-Restarts
Permissions-Policy
X-Nginx-Upstream-Cache-Status
X-Mod-Pagespeed
X-Edge
X-WebKit-CSP-Report-Only
X-Content-Type
X-Mcache
Content-Location
X-MS-InvokeApp
X-Url
X-CST
X-Country
Accept-CH-Lifetime
X-Clacks-Overhead
X-TtlSet
Rating
X-Vname
X-PC
X-Amz-Server-Side-Encryption
X-Midtier
X-Litespeed-Cache
RTSS
Cache-Tag
X-ESI
X-VARITI-CCR
X-D2id
X-Vcap-Request-Id
Verso
X-Element-Page-Cache
X-Server-Name
X-ECACHE
Origin-Trial
X-Kinja
X-Exp-Id
X-Kinja-Revision
X-Use-Magma
X-Kinja-Server
X-GoogleNews-Bot
X-Kinja-Build
X-Cdn-Fetch
X-Exp-Variant
X-Rack-Cache
X-Ac
X-GitHub-Request-Id
X-Powered-By-Plesk
X-Cnection
Service-Worker-Allowed
X-SharePointHealthScore
SPRequestGuid
X-Amz-Rid
X-Client-IP
X-Navigation-Version
Xkey
X-Ttl
X-B3-TraceId
X-Abt-Application-Version
Edge-Control
X-Cache-TTL
SPIisLatency
X-NWS-LOG-UUID
SPRequestDuration
X-Upstream
Arr-Disable-Session-Affinity
X-Varnish-TTL
X-Cached
X-Mg-S
X-Server-Lifecycle-Phase
X-Browser-Type
X-Erf-Bev-Bev
X-Kraken-Loop-Name
X-Erf-Bev-Bev-Is-Generated
X-Instrumentation
X-Dw-Request-Base-Id
X-Px
X-Cache-Key
X-Correlation-Id
Pagespeed
X-Middleton-Display
Display
X-Sol
Accept-Ch
X-FastCGI-Cache
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-NF-Request-ID
Access-Control-Request-Method
Edge-Cache-Tag
Content-MD5
X-Forwarded-For
X-Goog-Hash
X-Country-Code
X-Webkit-Csp
Front-End-Https
X-Powered-CMS
X-Version
X-Id
Public-Key-Pins
AR-SID
AR-CACHE
AR-Request-ID
AR-ATIME
AR-PoweredBy
X-HP-Trace-Id
X-HP-Webp
TCN
X-Jurisdiction
X-RateLimit-Remaining
X-T
X-Content-Digest
X-MSEdge-Ref
X-Recruiting
X-Amzn-Trace-Id
X-XRDS-Location
X-Ser
X-Accel-Expires
X-Daa-Tunnel
X-Middleton-Response
Response
TP-L2-Cache
TP-Cache
X-Ratelimit-Limit
X-Shield-Request-Id
S
MicrosoftSharePointTeamServices
Nginx-Cache
MRF-Tech
Mrf-Cache-Status
Cache-Status
X-B3-TraceId-Primal
X-Request-Received
X-Request-Processing-Time
Server-Node
X-HS-Content-Id
X-HS-Hub-Id
X-HS-Combine-CSS
X-HS-Cache-Config
Cache-Tags
X-Distributor
X-Hits
X-Fastcgi-Cache
X-Edge-Location-Klb
X-Kinsta-Cache
X-Ratelimit-Remaining
X-LB-Cache
Fastcgi-Cache
X-Origin-Server
X-Ua-Browser
X-Ratelimit-Reset
Cross-Origin-Opener-Policy
X-Ezoic-Cdn
X-PressLabs-Stats
Alternate-Protocol
Server-Name
X-TEC-API-VERSION
X-TEC-API-ROOT
X-Grace
X-TEC-API-ORIGIN
Filterid
X-DIS-Request-ID
X-Request-Handler-Origin-Region
X-Microsite
X-Geo-Country
X-Protected-By
Healthy
X-Rid
X-DataDome
X-LLID
Payment
X-Frontend
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Fastly-Request-ID
X-Logged-In
X-Debug-Info
Cleartype
X-Varnish-Backend
X-Www-Served-By
X-Git-Hash
X-Page-Id
X-Forwarded-Proto
X-FB-Debug
X-Load-Cache
X-NGENIX-Cache
X-Hostname
X-ASPNET-VERSION
X-Origin-Cache
DC
X-Cluster-Name
MS-Author-Via
Content-Disposition
Charset
X-TTL
Realpath
Access-Control-Allow-Method
X-B3-Sampled
X-Goog-Metageneration
X-GUploader-UploadID
X-Proxy
X-Upgrade-Enabled
X-F-Cache
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-AppVersion
X-Az
X-Activity-Id
X-Seen-By
X-ECache
Retry-After
X-Server-ID
Paypal-Debug-Id
X-VCache
X-Amz-Replication-Status
X-Type
X-Contextid
X-Amz-Meta-S3cmd-Attrs
X-Is-Crawler
X-Flags
X-Aspnet-Duration-Ms
X-Providence-Cookie
X-Request-Guid
X-Azure-Ref
Viewport
X-Route-Name
X-Whom
Surrogate-Key
X-App-Environment
Cross-Origin-Resource-Policy
Accept-Charset
X-Wix-Request-Id
X-B-Cache
X-Hosted-By
X-Fb-Rlafr
X-Signature
X-Revision
X-Aspnetmvc-Version
X-Varnish-Server
X-B
Count-Hit
X-TT
X-Akamai-Edgescape
X-DynaTrace
X-Cache-Age
X-B3-Traceid
Amp-Access-Control-Allow-Source-Origin
X-Language
X-Source
X-App-Server
X-Fastly-Request-Id
X-Cache-Control
Referer-Policy
X-Oracle-Dms-Ecid
X-Oracle-Dms-Rid
X-Mobile
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Goog-Storage-Class
X-Magnolia-Registration
X-Times
Host
X-Varnish-Grace
Version
X-RateLimit-Limit
X-Envoy-Decorator-Operation
X-N
X-HTML-Minification-Powered-By
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Original-Request-Id
X-Response-Served-From
X-UUID
X-Tumblr-User
MS-CV
X-Cache-Rule
WPO-Cache-Message
Ms-Operation-Id
X-Tumblr-Pixel-1
X-Tumblr-Pixel-0
WPO-Cache-Status
X-RTag
Refresh
X-Tumblr-Pixel
X-Rule
X-Varnish-Age
X-Cache-Time
X-Cache-Status-Check
SD-X-WS
Section-Io-Cache
X-Page-View
GEO-INFO
X-Cache-Expired-At
X-Framework
Access-Control-Request-Headers
X-Backend-Name
Akamai-GRN
X-EdgeConnect-Cache-Status
X-User-Agent
X-Cacheable-TTL
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
X-FW-Type
X-Is-Bot
X-Cache-Grace
X-FW-Version
Protected
X-Status
X-Rendered-As
X-RemovedCookies
X-ProcessESI
X-FW-Static
X-Instance
X-FW-Server
X-Drupal-Cache-Tags
X-Drupal-Cache-Contexts
X-Content-Powered-By
X-FW-Hash
X-FW-Dynamic
X-FW-Serve
X-Device-Type
X-L-Path
X-Servername
Url
X-Environment-Context
X-Http-Reason
X-Jobs
X-Akamai-Request-ID2
X-NYM-Debug-Backend
NGB
From-Origin
X-Adobe-Content
X-Adobe-Loc
SRV
X-G
X-Amz-Apigw-Id
X-Trace-Id
X-Amzn-RequestId
X-Template
X-Region
CDN-RequestId
X-CDN-Forward
X-COUNTRY
Front
X-Varnish-Ttl
X-Nginx-Cache
Accept-Language
X-XRDS-LOCATION
X-Debug-IsPreview
X-Debug-IsConnected
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Unique-Id
X-Cache-Hit
X-Content-Options
Backend
Fastly-SIE
Country
Fastly-SWR
X-Zen-Fury
X-Air-Source
X-Air-Trace-Id
Liferay-Portal
X-Air-Hostname
X-DynaTrace-JS-Agent
X-Tb
X-Newrelic-App-Data
X-Mode
Pinterest-Version
X-Pinterest-Rid
Pinterest-Generated-By
Content-Secure-Policy
X-Node-Name
X-Real-IP
Uber-Trace-Id
X-Rewrite-Enabled
Meta-Geo
Filters
X-Amzn-Remapped-Content-Length
X-Cache-Server
X-RN-RSRV
X-UPSTREAM-Address
X-Generation-Time
X-Tumblr-Pixel-2
X-IPS-LoggedIn
X-PHP-Backend
X-Proxy-Cache-Info
X-Format
Azure-SlotName
Azure-SiteName
Azure-Version
Cache-Hits
Selected-Fe
X-Access
Azure-RegionName
Azure-InstanceId
X-Ms-Request-Id
X-Ms-Version
X-Cache-Operation
X-Content-Age
X-Section
Webserver
X-Proxy-Build
X-Timing-Wait
Onion-Location
X-Rocket-Nginx-Serving-Static
X-Reqid
Property-Id
X-Cluster-Node
Cache-Name
CF-IPCountry
Node
ServedBy
Webcakes-App-Name
X-Sucuri-ID
X-Tt-Logid
Webcakes-App-Version
Webcakes-Region
TWC-Connection-Speed
X-Locale
X-R9-Blue-Green-Version
TWC-Privacy
TWC-Locale-Group
X-Origin-Hint
X-Proto
X-Soup
X-Sql-Count
X-Server-W
X-Sql-Duration-Ms
TWC-Device-Class
X-TIME
X-Sucuri-Cache
TWC-GeoIP-LatLong
TWC-GeoIP-Country
X-Cluster
X-UA-Device-Type
DB-Nickname
S-Rt
X-Cache-Host
X-Cache-Action
X-VWS-Id
X-AWS-Id
X-Via-Fastly
X-VC-Cache
Web-Mar-Node
X-Varnish-Beresp-Grace
ServerID
X-Say-Cacheable
X-Say-TTL
X-Time
X-SayCDN-TTL
X-Site-Version
X-LJ-Flow-ID
X-Ua
X-Debug
X-Handled-By
X-IPLB-Instance
X-Cms-Context
X-IPLB-Request-ID
Cross-Origin-Window-Policy
X-ProxyCache-Status
X-Detected-As
X-No-Session
X-Skip-Cache
X-Routing-Service
X-ProxyCache-Key
X-Zipkin-Id
X-Proxy-Cache-Status
X-PHP-Host
X-Tumblr-Pixel-3
X-SaId
X-Proxied
X-Web-Node
X-Extlb
X-BYPASS-REASON
X-Forwarded-Host
X-JoinUs
X-LAGOON
X-Labrador-Cache-Channel
X-Adobe-Source
X-Cache-TTL-Remaining
Apigw-Requestid
X-Ruxit-Js-Agent
X-Uri
Mn-Server-Ip
X-App-Version
X-Optimistic-Header
X-FB-TRIP-ID
X-Urbn-Context-Path
X-WP-CF-Super-Cache-Cache-Control
X-Buckets
X-Edge-Location
X-Xfnlog-Site
X-WP-CF-Super-Cache
X-Urbn-Site-Id
X-Origin-Date
Locale
Mime-Version
Countrycode
WP-Super-Cache
Fastcgi-Useragent
X-Tec-Api-Origin
X-Tec-Api-Root
X-Tec-Api-Version
X-ARC
CDN-PullZone
Source
CDN-Uid
X-Oneagent-Js-Injection
CDN-RequestCountryCode
CDN-EdgeStorageId
CDN-CachedAt
X-LSADC-Cache
X-GeoCode
X-GeoCountry
CDN-Cache
Cache-Tv-Group
X-Hl-Ver
X-Director
Upgrade-Insecure-Requests
X-Mg-Request-UUID
X-Varnish-Hits
Fastly-Drupal-HTML
X-Generated-By
CF-Cached-On
X-Request-Time
X-Redis-Cache
X-Cache-Debug
X-GEO
X-Loop
Xet-Cookie
X-SRV
X-Tx-Id
X-Origin-CC
X-Origin-TTL
Frame-Options
X-URL
X-FireWall-Port
X-Varnish-Cache-Hits
X-Pass-Why
X-TNCMS
X-TA-CDN-Provider
X-Varnish-Hostname
X-RM-Cache-TTL
X-ShardId
X-Alternate-Cache-Key
X-Akamai-Transformed
X-ShopId
X-ServerID
X-Storefront-Renderer-Rendered
X-Shopify-Stage
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-Datadog-Sampled
X-Datadog-Sampling-Priority
X-Datadog-Trace-Id
X-Datadog-Parent-Id
X-Api-Version
X-Newrelic-Synthetics
X-Service
Load-Balancing
Xserver
X-Endurance-Cache-Level
X-Request-Host
X-Pubstack
X-Served-From
X-B3-Spanid
X-Location
X-Varnish-Beresp-Ttl
X-Cache-Info
X-Origin-Time
X-Processor
X-Platform-Cluster
X-Platform-Router
X-Cache-NE
Host-ID
X-Platform-Processor
DCR-Decision-By
X-External-Request-Id
X-Ec-GeoHdr
X-Ec-Fail
Candidate-Md5Url
Cache-Host
X-Gdpr
X-Generated-On
BehaviorPad-Version
X-Level-Front-Cache
DCR-Processing-Time-Ms
X-CUA
Gannett-Cam-Experience-Id
X-Nyt-Route
X-D
X-Destination
X-Mobile-URL
X-Developer
Edge-Cache
X-Conf
X-Thanos
X-Bc-Bl
Ngx.Var.Host
Odigeo-Trace-Id
X-BBC-Edge-Cache-Status
X-A-Dcw
Surrogated-Key
T-Server
X-BCube-Filmed-By
X-Vdms-Path
X-Vdms-Version
Origin
X-B-Cookie
Redirect-Candidate
X-A-Wwc
Rendered-Blocks
Req-Svc-Chain
X-Aed
Xc-Version
X-A-Dgt
X-Rocket-Build-Number
X-Application
X-A-Dam
Meta-Geo-Continent
X-ScT
WWW-Authenticate
X-Sigma
X-Sigma-Backend
X-A
Lang
X-Rojux
X-S
X-S-Cookie
Sslversion
X-SRCache-Key
X-TIM-N
Memcached
X-Bip
A
MD5-Digest
X-Test
X-A-Ccd
X-NWS-UUID-VERIFY
X-Restarts
Server-Info
CacheControlHeader
Cache-Key
X-Fmm-Version
Apple-News-Services-Parsed-Url
AKAMAI
Thinkindot-CacheControl-Type
Thinkindot-Control
We-Hiring
Apple-News-Services-Handled
Apple-News-Services-Host
TDXMobile
Thinkindot-CacheControl
Apple-News-Services-Request-Url
X-Frame-Option
X-Auto-Login
X-Clara-WADP
X-CMSURLCustom
Gh-Request-Id
Mail-Subject
Magicmarker
X-Cache-Date
X-Cache-Bucket
X-Cdn-Srv
X-Core-Value
Fastly-GeoIP-CountryCode
X-Developers
Server-Host
X-Ec-Custom-Error
Release
DSUID
Fastly-Backend-Name
NM-Fastcgi-Cache
X-Epic-Correlation-Id
Section-Io-Origin-Status
X-Mid
X-Mly-Id
X-Mvc-Supplant-Cachable
X-Loc
X-Hash
X-SD-PageType
X-JWT-State
Country-Code
X-Node-Id
X-Pool
X-Org
X-Origin
Section-Io-Id
Section-Io-Origin-Time-Seconds
X-S-Maxage
Section-Origin-Responded
X-Storage
X-Is-Gdpr
X-VG-TLSProxy
X-INCAP-ABP
X-Has-Esi
X-WADP-Cache
X-WA-Info
X-Worker
X-Varnishpool
X-We-Are-Hiring
X-Thinkindot-L3
X-Geo-Header
X-Var-Ttl
X-Varnish-Beresp-Status
X-HS-Content-Campaign-Id
X-Httpd
X-CACHE-AGE
X-Parent-Response-Time
State
X-Accel-Buffering
X-Accel-Expires-Debug
X-Akamai-Device-Characteristics
X-App
X-WP-CF-Super-Cache-Active
X-Dispatcher-Number
Wxu-Next-Hostname
X-SVT-ORM-RULES
X-Sn-Servicetimems
X-Slack-Shared-Secret-Outcome
Wxu-Next-Commit
X-SVT-ORM-VERSION
Vix-Hermes-Req-Id
X-Men
Web-Mar-Region
X-Slack-Backend
X-Server-IP
X-Azure-Ref-OriginShield
X-Date
X-Core-Mission
X-Cdn-Origin
X-Fastly-Backend
X-Fastly-Cache
Wxu-Next-Region
X-Region-Sid
X-Gamma-Serve
X-CacheTTL
X-Scale
X-FC-Vary-Parameters
X-Fetched-On
X-Human
X-Esi-Check
X-Irp-Debug
X-Dispatcher-Server
X-LB-NoCache
X-Forwarded-Site
X-Hnp-Log
X-GeoIP-City
X-GeoIP
X-GeoIP-Country-Code
X-GeoIP-Region-Code
X-HN
X-Gzip
X-NCache
X-Nginx-Cache-Key
X-Gen-Mode
X-SB
X-Block-Status
X-VarnishDD-TTL
X-VServer
X-Vmg-Version
X-Request-Start
X-Req
User-Cache-Control
X-NodeID
X-Old-Content-Length
X-Op-Id-All
X-Platform
X-Origin-Response-Time
X-Wix-Viewer-Type
X-Cache-Id
Cache-Provider
Server-Ext
X-CSRF-Token
Machine
Environment
On-Server
PFcat
Sever-Int
Server-Hostname
Datacenter
CDCHOST
Canary
Kp-EeAlive
C-Via
CloudFront-Viewer-Country
L
Ha-Gx-Prefs
X-Qloud-Router
HA-Ipaddr
X-CGP
X-Planisys-CDN-TTL
X-Platform-Server
Is-Eu
X-Ckpd-Fst-Backend
X-Planisys-CDN-Cache
Decoy-Debug-Key
X-Device-Os
X-Nananana
Cluster
Click-Count-Error
X-Eu-Site
Decoy-Debug-Status
Decoy-Debug-TTL
Fastly-SSL
X-Csrf-Jwt
X-Cache-Tags
X-DefElseHash
X-Owner
X-DefHash
X-Planisys-CDN-Rules
L5d-Success-Class
Cmsid
Cmstype
X-Ad-Defer-Variation
Platform
X-Tid
Ssr
X-Instance-Name
Tube-Got-Eval
Tube-Got-Results
Tube-Get-Contents
X-Minions-Version
Adler-Geo
Pics-Label
Tube-Return
NGX
X-V-Cache
X-Cache-Backend
Click-Count-Action-Start
X-Variation
Origin-CC
X-Varnish-Remaining-TTL
X-Varnish-CookieINHashed-On
X-Varnish-CookieHashed-On
Origin-EX
X-Webkit-CSP-Report-Only
X-Mvc-Supplant-OutputCached
X-Refresh
Producers
X-Cache-FS-Status
X-Response-By
X-Microcachable
X-DPWN-IS-SECURE
X-Cache-Remote
X-Origin-Expires
X-Ua-Device
X-Provided-By
X-Zone
X-Release
X-Aicache-OS
X-Tb-Optimization-Total-Bytes-Saved
Expect-Staple
Locid
X-FL-QIT-DEBUG
HostName
X-FL-EDGE
Srvid
X-DC
X-Air-Pt
X-Via-CDN
Memory
X-ND-Cache
X-From
GeoIP-Latitude
X-RCS-CacheZone
X-Dc
Env
Time
X-Up
X-Via-SSL
X-Presslabs-Stats
X-Trace-ID
X-VC
Edge-Copy-Time
X-Via-Edge
X-Servedbyhost
X-NewRelic-App-Data
Svr
X-Vcl-Version
X-Generated-In
NtCoent-Length
X-AIR-PT
Sid
SID
X-Edge-Pop
X-Cached-By
X-Cache-Enabled
X-Webkit-CSP
Cache
X-HS-Status
X-Via-Poph
X-DataCenter
X-Via-Popv
X-Debug-Cache-Store
X-Via-Popn
X-Lambda-Id
X-Nc
X-Debug-Cache-Fetch
X-HA-Backend
X-Vgn-Hpd-Cached
X-Esi
X-Srv
X-Cs
X-Vgn-Hpd-Ssi
X-Vc
X-Vgn-Hpd-Variations-Key
X-Wa
Fastly-Drupal-Html
Cdn
X-ZONE
AMP-Access-Control-Allow-Source-Origin
X-Correlation-ID
X-Vtex-Remote-Cache
X-CLOUD-TRACE-CONTEXT
GeoIp-Country-Code
Server-ID
CPC-Age
X-Client-Ip
CPC-Cache
X-CCDN-CacheTTL
VNS-Age
X-Render-Time
X-CCDN-Origin-Time
X-Hcs-Proxy-Type
VNS-Cache
X-NGINX-Cache
X-Check-Cacheable
Hostname
X-AK-Request-ID
X-VCT
Cdncip
X-LB-ID
Cdnsip
X-Gateway-Cache-Key
X-Gateway-Request-Id
X-Via-NSCOPI
X-TH-Server
X-Amz-Meta-Cb-Modifiedtime
X-Gateway-Skip-Cache
X-Gateway-Cache-Status
X-Upstream-Ht
X-Proxy-CacheRZ
XkeyRZ
X-Upstream-Ct
X-Via-JSL
X-ATG-Version
True-Client-IP
X-API-Version
X-Fpc
X-Cache-Type
X-B3-SpanId
X-CSRF-TOKEN
Uri
X-Nf-Request-Id
X-Cache-ASPX
X-Contensis-Viewer-Groups
X-Varnish-Authentication
Srv
X-CS
X-EC-Lua
Esi-Enabled
Eomportal-Instance
M-TraceId
X-Varnish-Beresp-TTL
X-CF-Lambda-Fn
X-MSEdge-Flight
X-RateLimit-Remaining-Second
X-MSEdge-Features
X-Datadome
X-RateLimit-Limit-Second
X-CF-Lambda-Version
X-PAYTM-SRV-ID
OT-Force-Account-Verify
Resin-Trace
Ngx-Var-Key
X-Micro-Cache
XServer
True-Client-Ip
Path
X-FPC
X-MP-GENERATED-AT
YJS-ID
Request-ID
X-Udemy-Cache-App-Namespace
X-Fastly-Country-Code
X-Cache-NGX
X-Request-URI
IsBot
CDN
X-CDN-Cache-Status
X-Wikidot-Static-Cache
N-Cache
X-Wikidot-Backend
X-APP-VERSION
X-SIPLIST1
X-Tenant
X-Forwarded-Path
GeoIP-Country-Code
X-Lb-Id
X-Bl-Debug
X-Info
RNT-Time
X-VCL-Version
X-Orig-Expires
X-Shop-Environment
RNT-Machine
X-TX-ID
X-Accel-Version
Sm-Log-Id
Server-Id
X-Service-Response-Time
Lb
X-Policy
X-App-Name
X-B3-Trace-ID
X-WA
X-Datacenter
Location
X-Ha-Backend
X-MCACHE
X-Pod-Name
HIT
X-RateLimit-Reset
Cross-Origin-Opener-Policy-Report-Only
X-Edge-POP
X-Geo
LB
X-Akamai-Pragma-Client-IP
X-Via-PopV
X-SERVER-NAME
X-Oss-Hash-Crc64ecma
Servername
X-Cache-Expires
X-Cdn-Cache-Status
X-Via-PopH
X-Oss-Object-Type
X-Via-PopN
X-Snapshot-Date
Ohc-File-Size
X-Oss-Request-Id
X-Oss-Server-Time
X-Cdn-Request-ID
X-NC
X-Oss-Storage-Class
X-Srcache-Fetch-Status
X-Srcache-Store-Status
Timeexpire
X-Cache-Ttl
ENV
FSS-Cache
Hit
X-CACHE-KEY
Geoip-Latitude
X-LiteSpeed-Cache-Control
X-Ctl-Mach
Proxy-Connection
X-ServedByHost
X-Cdn-Diag
Yjs-Id
Pramga
Req-ID
Epwk-X-Cache
Tcn
X-Rebelmouse-Cache-Control
X-Logging-Id
X-Rebelmouse-Surrogate-Control
X-UP
X-Cdn-Forward
Traceparent
X-TraceId
X-Container-Uri
X-Scheme
X-Hyper-Cache
WZWS-RAY
X-Moov-Xdn-Version
X-Moov-T
X-Git-Commit
X-Dw-Trace-Id
X-HostName
X-Amz-Meta-Opti
X-Serial
X-M-Reqid
X-MiniProfiler-Ids
X-TT-LOGID
X-M-Log
X-Qnm-Cache
X-Acquia-Application-Trace
X-ApacheServer
X-PERF
Ec-Rule-Version
X-Swift-Error
X-Viewer-Country
X-Acquia-Application-UUID
X-RAMCache
X-Tncms
X-VG-WebCache
XM
X-B3-Parentspanid
X-Fastly-Backend-Reqs
X-Acquia-Site
Warning
X-Acquia-Purge-Tags
X-Lb-Nocache
Cdn-Requestid
Content-Style-Type
X-Vcache
Cneonction
Content-Script-Type
CountryCode
X-Wp-Cf-Super-Cache-Cache-Control
X-Wp-Cf-Super-Cache
X-Lsadc-Cache
X-F-Status
X-Mg-Cache
X-Litespeed-Cache-Control
X-Request-URL
X-Th-Server
X-Iauth-Set-Uid
V-Age
Ohc-Cache-HIT
Ngx
X-Mid-Debug-Cache-Key
X-Webstats-RespID
X-Mid-Debug-Cache-Disk
My-App
MIME-Version
X-LiteSpeed-Tag
Inserted-Into-Cache-At
X-B3-ParentSpanId
X-IPS-Cached-Response
X-Fastly-Cache-Hits
X-Cache-Ngx