Threat Level: green Handler on Duty: Rob VandenBrink

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
X-Powered-By
Pragma
CF-RAY
X-XSS-Protection
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
Alt-Svc
X-Xss-Protection
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
CF-Ray
X-Download-Options
X-Timer
X-Request-Id
Access-Control-Allow-Headers
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-DNS-Prefetch-Control
X-Envoy-Upstream-Service-Time
X-FRAME-OPTIONS
Timing-Allow-Origin
X-Iinfo
X-Request-ID
X-Drupal-Dynamic-Cache
Feature-Policy
X-Dns-Prefetch-Control
X-Content-Security-Policy
Content-Encoding
X-XSS-PROTECTION
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
Server-Timing
X-AspNetMvc-Version
P3p
Access-Control-Max-Age
X-Amz-Request-Id
Request-Context
X-Amz-Id-2
X-Turbo-Charged-By
X-Via
X-AH-Environment
X-Backend
X-Cache-Group
X-Robots-Tag
Cf-Edge-Cache
Host-Header
Keep-Alive
X-Hacker
X-Proxy-Cache
X-UA-Device
X-Server
X-Rq
X-Vhost
X-Server-Powered-By
Allow
X-Age
X-Varnish-Cache
X-Ws-Request-Id
X-Dispatcher
X-Amz-Version-Id
EagleId
Nel
X-Ua-Compatible
Grace
X-LiteSpeed-Cache
Cf-Apo-Via
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-Page-Speed
X-Device
Cf-Railgun
EagleEye-TraceId
X-Aws-Lambda-Call-Status
X-Swift-SaveTime
X-Swift-CacheTime
X-Pingback
Ali-Swift-Global-Savetime
X-Host
X-Node
X-WebKit-CSP
X-OneAgent-JS-Injection
Accept-CH
X-Server-Id
X-CST
X-Backend-Server
Surrogate-Control
X-Cache-Lookup
X-Nginx-Cache-Status
X-Readtime
Permissions-Policy
X-Akam-SW-Version
Request-Id
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
X-Nginx-Upstream-Cache-Status
X-Application-Context
X-Content-Security-Policy-Report-Only
Accept-CH-Lifetime
X-Cloud-Trace-Context
X-Trace
X-Response-Time
X-Edge
X-HW
Content-Location
X-Clacks-Overhead
X-Mod-Pagespeed
Xkey
X-Midtier
Rating
X-Ruxit-Js-Agent
X-ESI
X-Amz-Server-Side-Encryption
X-Url
X-ECACHE
Accept-Ch-Lifetime
X-Mcache
X-Oneagent-Js-Injection
X-Upstream
X-Vcap-Request-Id
X-Litespeed-Cache
Accept-Ch
X-Country
X-D2id
X-Ruxit-JS-Agent
Cache-Tag
X-MS-InvokeApp
X-GoogleNews-Bot
X-Use-Magma
X-Exp-Id
X-Kinja
X-Exp-Variant
X-Kinja-Server
X-TtlSet
X-Kinja-Build
X-PC
X-Cdn-Fetch
X-Kinja-Revision
X-Vname
X-Element-Page-Cache
Verso
X-Rack-Cache
Edge-Control
X-Powered-By-Plesk
X-WebKit-CSP-Report-Only
RTSS
Fastly-Restarts
X-Cache-TTL
X-Ac
X-VARITI-CCR
Origin-Trial
X-Navigation-Version
X-Abt-Application-Version
X-Country-Code
X-Ttl
Service-Worker-Allowed
X-Goog-Hash
X-Cached
X-Middleton-Display
X-Sol
Pagespeed
Display
X-GitHub-Request-Id
X-Browser-Type
X-Amz-Rid
X-Content-Type
X-Varnish-TTL
Cross-Origin-Opener-Policy
X-SharePointHealthScore
SPRequestGuid
X-Dw-Request-Base-Id
X-Mg-S
X-Server-Name
X-Amzn-Trace-Id
X-Powered-CMS
Response
X-Middleton-Response
Arr-Disable-Session-Affinity
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev
X-Kraken-Loop-Name
X-Erf-Bev-Bev-Is-Generated
X-Instrumentation
AR-ATIME
AR-PoweredBy
AR-Request-ID
AR-SID
X-NF-Request-ID
SPIisLatency
SPRequestDuration
X-Cache-Key
X-B3-TraceId
X-Kinja-CCPA
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Version
X-Times
AR-CACHE
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Jurisdiction
X-HP-Trace-Id
X-HP-Webp
Pinterest-Version
X-Accel-Expires
Pinterest-Generated-By
X-B3-Traceid
X-Pinterest-Rid
Cache-Tags
X-T
Front-End-Https
X-NWS-LOG-UUID
Cache-Status
X-Cnection
X-Fastly-Request-ID
X-RateLimit-Remaining
X-Fastcgi-Cache
Nginx-Cache
Edge-Cache-Tag
X-MSEdge-Ref
X-Hits
X-Webkit-CSP
X-Px
X-Ser
MRF-Tech
X-RateLimit-Limit
Mrf-Cache-Status
X-B3-TraceId-Primal
Public-Key-Pins
Payment
X-Recruiting
X-LLID
X-Frontend
X-Request-Processing-Time
X-Request-Received
Server-Node
X-Ua-Browser
X-Client-IP
X-Erf-Stays-Pdp-Viaduct-Migration-Web
X-DIS-Request-ID
X-Shield-Request-Id
TP-Cache
X-FastCGI-Cache
S
X-Goog-Metageneration
X-GUploader-UploadID
Access-Control-Request-Method
MicrosoftSharePointTeamServices
X-HS-Combine-CSS
X-HS-Cache-Config
X-HS-Content-Id
X-HS-Hub-Id
X-Amzn-RequestId
X-Amz-Apigw-Id
X-LB-Cache
X-Request-Handler-Origin-Region
X-Content-Digest
TP-L2-Cache
X-Protected-By
X-Microsite
X-Distributor
Content-MD5
X-Ezoic-Cdn
X-Page-Id
Access-Control-Allow-Method
X-FB-Debug
Realpath
Accept-Charset
X-Correlation-Id
X-Cluster-Name
Fastcgi-Cache
X-Geo-Country
X-Rid
X-Hostname
X-Webkit-Csp
X-TEC-API-ROOT
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-B3-Sampled
X-Seen-By
X-Aspnet-Version
X-Ua-Device
X-PressLabs-Stats
X-Forwarded-For
X-Server-ID
Cleartype
X-Envoy-Decorator-Operation
X-XRDS-Location
Referer-Policy
X-Client-Ip
X-Goog-Stored-Content-Encoding
X-Goog-Storage-Class
X-Goog-Stored-Content-Length
X-Newrelic-App-Data
X-Mobile
X-Goog-Generation
DC
Cross-Origin-Resource-Policy
TCN
X-Content-Options
X-Ratelimit-Remaining
X-Origin-Cache
X-Debug-Info
X-Varnish-Backend
X-Logged-In
X-Daa-Tunnel
X-Contextid
Count-Hit
X-Varnish-Grace
X-Azure-Ref
X-Aspnetmvc-Version
X-Grace
X-Providence-Cookie
X-IPS-LoggedIn
X-Is-Crawler
X-Revision
X-Request-Guid
X-Route-Name
X-App-Environment
X-Fb-Rlafr
X-Amz-Replication-Status
X-Flags
Surrogate-Key
X-Aspnet-Duration-Ms
X-Git-Hash
X-Origin-Server
X-App-Server
X-Hosted-By
X-TT
Frame-Options
X-Amz-Meta-S3cmd-Attrs
X-Ratelimit-Limit
X-Forwarded-Proto
X-Kinsta-Cache
X-Wix-Request-Id
X-Edge-Location-Klb
X-RateLimit-Reset
Alternate-Protocol
X-Whom
Healthy
WPO-Cache-Message
WPO-Cache-Status
Retry-After
Charset
X-TTL
X-Akamai-Edgescape
Viewport
X-F-Cache
X-Backend-Name
X-Magnolia-Registration
MS-Author-Via
X-COUNTRY
Section-Io-Cache
X-Webkit-CSP-Report-Only
X-B
Paypal-Debug-Id
SRV
X-Proxy-Cache-Info
X-Activity-Id
X-App-Version
X-AppVersion
X-Az
ServerID
Amp-Access-Control-Allow-Source-Origin
X-N
X-EdgeConnect-Cache-Status
X-Instance
X-Original-Request-Id
Host
X-Http-Reason
X-ARC
X-Cache-Rule
X-Response-Served-From
SD-X-WS
X-Language
Akamai-GRN
VIX-Pulpo-Node
X-Rule
Filterid
VIX-Pulpo-Upstream-Status
X-Kong-Upstream-Latency
X-Status
X-Kong-Proxy-Latency
Protected
X-Akamai-Request-ID2
X-Rocket-Nginx-Serving-Static
X-Cache-Grace
X-User-Agent
X-UUID
X-Edge-Location
X-Varnish-Age
Front
X-Id
X-Cacheable-TTL
X-Unique-Id
X-Page-View
X-Environment-Context
X-Region
From-Origin
X-Jobs
Fastly-SIE
Fastly-SWR
X-Framework
X-Rendered-As
Server-Name
X-FW-Dynamic
X-FW-Version
X-L-Path
X-Is-Bot
X-Cache-Control
X-FW-Type
X-FW-Hash
X-FW-Server
X-FW-Serve
X-FW-Static
X-Adobe-Loc
Country
Access-Control-Request-Headers
X-Cache-Time
X-Type
X-Adobe-Content
X-Www-Served-By
X-Varnish-Server
X-Proxy
X-Tumblr-Pixel-1
X-Tumblr-Pixel
X-RemovedCookies
X-ProcessESI
X-G
X-Tumblr-Pixel-0
X-Tumblr-User
X-Datadog-Parent-Id
X-Datadog-Sampling-Priority
X-Datadog-Trace-Id
X-Trace-Id
X-Load-Cache
X-DataDome
Refresh
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Vcache
X-ECache
X-Cache-Age
X-CDN-Forward
X-Source
X-Datadog-Sampled
X-Mg-Request-UUID
X-Time
X-Oracle-Dms-Ecid
X-Amzn-Remapped-Content-Length
X-Debug-IsPreview
X-Debug-IsConnected
X-Oracle-Dms-Rid
X-Drupal-Cache-Tags
Version
X-Erf-Web-Scheduler
Accept-Language
Xet-Cookie
X-Signature
X-B-Cache
Content-Disposition
Backend
X-ID
X-Generated-By
X-HTML-Minification-Powered-By
X-WP-CF-Super-Cache-Cache-Control
CF-IPCountry
X-WP-CF-Super-Cache
X-DynaTrace
Webserver
X-DynaTrace-JS-Agent
Countrycode
X-Upgrade-Enabled
X-Httpd
X-Servername
X-Nginx-Cache
X-Mode
X-Tt-Trace-Tag
X-Varnish-Ttl
Url
X-Tt-Trace-Host
Xserver
X-Content-Age
GEO-INFO
X-LAGOON
Load-Balancing
Locale
X-Cache-Operation
X-SaId
Filters
Fastcgi-Useragent
X-Say-TTL
X-Storage
X-Tb
X-Rewrite-Enabled
X-XRDS-LOCATION
X-GeoCode
X-Device-Type
X-Varnish-Cache-Hits
S-Rt
Onion-Location
Meta-Geo
X-JoinUs
X-Git-Commit
X-GeoCountry
X-SayCDN-TTL
X-Say-Cacheable
Azure-SiteName
X-ServerID
X-Container-Uri
X-Urbn-Context-Path
Azure-InstanceId
X-UPSTREAM-Address
Azure-RegionName
X-NYM-Debug-Backend
X-Cache-Action
X-Urbn-Site-Id
X-URL
Azure-SlotName
X-Proto
X-Template
X-Director
Azure-Version
X-MCACHE
Uber-Trace-Id
X-Forwarded-Host
X-Xrds-Location
X-VC-Cache
X-Tt-Logid
X-Cluster-Node
X-B3-SpanId
X-PHP-Host
CDN-RequestId
X-RM-Cache-TTL
X-Varnish-Hostname
X-Soup
X-Labrador-Cache-Channel
X-Content-Powered-By
Web-Mar-Node
X-Cache-Server
X-Detected-As
X-Adobe-Source
X-Sucuri-Cache
X-Sql-Count
X-Ms-Version
X-Sucuri-ID
X-VCT
X-Served-From
X-Ms-Request-Id
X-Sql-Duration-Ms
OT-Force-Account-Verify
X-Generation-Time
X-Logging-Id
DB-Nickname
X-R9-Blue-Green-Version
TWC-GeoIP-Country
X-Zipkin-Id
TWC-Locale-Group
Webcakes-App-Name
X-RCS-CacheZone
Webcakes-App-Version
Node
Mn-Server-Ip
TWC-Privacy
X-Zen-Fury
X-Routing-Service
TWC-Device-Class
X-Skip-Cache
TWC-Connection-Speed
X-Debug
X-Lambda-Id
X-FB-TRIP-ID
X-Drupal-Cache-Contexts
TWC-GeoIP-LatLong
X-Origin-Hint
X-Proxied
X-Extlb
X-LSADC-Cache
Property-Id
Webcakes-Region
X-Tumblr-Pixel-2
X-Tumblr-Pixel-3
X-Uri
X-Timing-Wait
X-Proxy-Build
X-Format
X-Fetched-On
Selected-Fe
Liferay-Portal
X-Tncms
X-Loop
Source
X-Rn-Rsrv
X-Fastly-Request-Id
X-Endurance-Cache-Level
X-Nf-Request-Id
X-Hcs-Proxy-Type
X-Origin-Date
X-MP-GENERATED-AT
X-CCDN-CacheTTL
X-CCDN-Origin-Time
X-Cache-Hit
X-Redis-Cache
X-Tec-Api-Root
X-Tec-Api-Origin
Cross-Origin-Window-Policy
X-Tec-Api-Version
Fastly-Drupal-HTML
X-TimeS
X-Varnish-Hits
X-Ua
X-CACHE-AGE
X-Srv
X-Pass-Why
Section-Origin-Responded
Section-Io-Origin-Status
Section-Io-Origin-Time-Seconds
Section-Io-Id
X-Cache-Expired-At
Upgrade-Insecure-Requests
Content-Secure-Policy
X-Presslabs-Stats
X-S
X-Real-IP
X-UA-Device-Type
X-Cache-TTL-Remaining
X-Origin-TTL
X-Akamai-Transformed
X-Node-Name
X-Origin-CC
X-Pubstack
X-Newrelic-Synthetics
CDN-RequestCountryCode
X-Server-W
X-GEO
CDN-RequestPullSuccess
CDN-Uid
X-Ratelimit-Reset
CDN-EdgeStorageId
CDN-RequestPullCode
CDN-PullZone
CDN-Cache
X-TIME
CDN-CachedAt
X-Hl-Ver
X-Via-JSL
Cache-Provider
X-RTag
MS-CV
Ms-Operation-Id
X-AIR-PT
Cache-Hits
X-Parent-Response-Time
X-Cache-Host
X-Handled-By
Odigeo-Trace-Id
NGB
Xc-Version
Ngx.Var.Host
T-Server
Server-Host
X-Policy
Sslversion
X-Gdpr
Surrogated-Key
Rendered-Blocks
True-Client-Country-4JS
Redirect-Candidate
L
CPC-Cache
CPC-Age
DCR-Decision-By
DCR-Processing-Time-Ms
X-RateLimit-Limit-Second
X-RateLimit-Remaining-Second
Canary
Apigw-Requestid
X-Request-Host
BehaviorPad-Version
X-Wix-Viewer-Type
X-Reqid
Fastly-Backend-Name
Fastly-GeoIP-CountryCode
Magicmarker
Lang
Mail-Subject
MD5-Digest
Meta-Geo-Continent
L5d-Success-Class
X-Xfnlog-Site
Gannett-Cam-Experience-Id
Fastly-SSL
Gh-Request-Id
Ha-Gx-Prefs
HA-Ipaddr
N-Cache
VNS-Cache
X-Bl-Debug
X-BCube-Filmed-By
X-GeoIP-Region-Code
X-Cache-Bucket
X-Cache-Info
X-Bc-Bl
X-B-Cookie
X-App
X-Aed
X-Application
X-Dispatcher-Number
X-Worker
X-Cache-NE
X-Cache-Type
X-Debug-Cache-Store
X-Cms-Context
X-Conf
X-Csrf-Jwt
X-D
X-Destination
X-Developer
X-Cdn-Diag
X-CacheTTL
X-CF-Lambda-Fn
X-CF-Lambda-Version
X-CGP
X-Ec-Custom-Error
X-Ec-Fail
W
X-FC-Vary-Parameters
We-Hiring
Web-Mar-Region
X-A
X-Debug-Cache-Fetch
X-Date
X-Has-Esi
X-GeoIP-Country-Code
Vix-Hermes-Req-Id
X-Origin-Time
VNS-Age
X-A-Ccd
X-A-Dam
X-Accel-Buffering
X-A-Wwc
X-Ec-GeoHdr
X-Wikidot-Static-Cache
X-Accel-Expires-Debug
X-Epic-Correlation-Id
X-A-Dgt
X-A-Dcw
X-Fastly-Backend
X-External-Request-Id
X-Eu-Site
X-Forwarded-Path
Candidate-Md5Url
X-Orig-Expires
X-Slack-Backend
X-Slack-Shared-Secret-Outcome
X-We-Are-Hiring
X-SRCache-Key
X-JWT-State
X-Is-Gdpr
X-ScT
X-IPLB-Request-ID
X-SD-PageType
X-Shop-Environment
X-Vtex-Remote-Cache
X-Tenant
X-Datadome
X-Vdms-Version
X-Vdms-Path
X-VG-WebCache
X-Nyt-Route
Cache-Name
X-Viewer-Country
X-Mvc-Supplant-OutputCached
X-Tx-Id
X-Optimistic-Header
X-Var-Ttl
X-Mvc-Supplant-Cachable
X-IPLB-Instance
X-Wikidot-Backend
X-Rojux
X-S-Cookie
X-Restarts
WP-Super-Cache
ServedBy
X-CSRF-Token
X-Bip
X-BBC-Edge-Cache-Status
X-Thinkindot-L3
X-Thanos
X-Test
X-Auto-Login
X-BYPASS-REASON
X-Cache-Id
X-Platform
X-Varnish-CookieHashed-On
X-Variation
X-Up
X-Org
X-Cache-Debug
Thinkindot-Control
X-Mly-Id
X-Storefront-Renderer-Rendered
X-Sorting-Hat-ShopId
X-Mid
X-Sorting-Hat-PodId
X-SVT-ORM-RULES
X-Gzip
X-ApacheServer
X-Sn-Servicetimems
Origin-Agent-Cluster
X-Alternate-Cache-Key
X-WADP-Cache
X-App-Name
X-Varnish-Remaining-TTL
X-Esi-Check
X-No-Session
X-Nitro-Cache
X-DPWN-IS-SECURE
X-DefHash
X-VG-TLSProxy
X-Owner
X-Node-Id
X-Human
X-Generated-On
X-Old-Content-Length
X-Fmm-Version
X-Request-Time
X-Origin-Response-Time
X-DefElseHash
X-NGENIX-Cache
X-Clientip
X-CMSURLCustom
X-Clara-WADP
X-PHP-Backend
X-Cdn-Origin
Thinkindot-CacheControl-Type
X-PERF
X-Core-Mission
AKAMAI
Adler-Geo
X-PAYTM-SRV-ID
X-Vmg-Version
X-Core-Value
X-Varnishpool
X-Varnish-CookieINHashed-On
X-SVT-ORM-VERSION
X-Irp-Debug
X-Server-IP
X-ShardId
Is-Eu
Hostname
X-VServer
X-S-Maxage
Host-ID
Cf-Device-Type
Req-Svc-Chain
Platform
X-ShopId
X-Shopify-Stage
Machine
Producers
X-ProxyCache-Key
Release
X-Level-Front-Cache
Memcached
X-ProxyCache-Status
Expect-Staple
Datacenter
Cmstype
X-Hash
X-INCAP-ABP
TDXMobile
X-Refresh
Thinkindot-CacheControl
X-Geo-Header
X-Qloud-Router
X-Pool
Origin
X-Loc
Environment
Cmsid
User-Cache-Control
X-WA-Info
Apple-News-Services-Handled
CDCHOST
X-Cdn-Srv
X-Origin
X-Nginx-Cache-Key
X-VWS-Id
Esi-Enabled
X-Scale
X-Dispatcher-Server
X-Device-Os
X-Nananana
NM-Fastcgi-Cache
CloudFront-Viewer-Country
X-Cluster
Apple-News-Services-Parsed-Url
Apple-News-Services-Host
X-Akamai-Device-Characteristics
X-Forwarded-Site
Server-Ext
X-LJ-Flow-ID
Server-Hostname
X-GeoIP
X-Vcl-Version
Country-Code
X-Gen-Mode
X-NodeID
Sever-Int
X-AWS-Id
X-From
DSUID
X-Block-Status
Apple-News-Services-Request-Url
X-Hnp-Log
X-Op-Id-All
Server-Info
Origin-CC
Wxu-Next-Region
Ssr
Wxu-Next-Commit
Wxu-Next-Hostname
X-LB-NoCache
X-Section
X-Proxy-Cache-Status
Pics-Label
X-NCache
X-Instance-Name
Origin-EX
X-Cache-Enabled
X-Access
X-TIM-N
C-Via
X-Cache-Status-Check
AMP-Access-Control-Allow-Source-Origin
X-API-Version
Time
X-CACHE-GROUP
Server-ID
X-Via-Fastly
Memory
X-Amz-Meta-Cb-Modifiedtime
X-Tb-Optimization-Total-Bytes-Saved
X-Micro-Cache
X-HA-Backend
NGX
X-Wp-Cf-Super-Cache-Active
X-Internal-Host
X-Air-Source
X-Air-Trace-Id
X-Azure-Ref-OriginShield
X-Air-Hostname
X-Cs
X-Dc
GeoIP-Latitude
X-Platform-Router
X-AB
X-Webkit-Csp-Report-Only
X-ZONE
X-Vgn-Hpd-Reason
X-B3-Spanid
X-Platform-Processor
X-Platform-Cluster
X-Varnish-Beresp-Ttl
X-Web-Node
X-DC
X-Varnish-Beresp-Grace
X-Microcachable
X-Origin-Expires
Cache-Host
X-FTR-Request-ID
X-Geo-Region
X-Correlation-ID
X-Zone
Location
X-Buckets
X-Github-Request-Id
XM
X-B3-Parentspanid
X-SIPLIST1
X-DataCenter
IsBot
X-Fpc
PFcat
X-Pod-Name
X-VarnishDD-TTL
X-HN
X-Accel-Version
X-Backend-Instance
X-TraceId
Cdn-Requestid
X-WP-CF-Super-Cache-Active
X-Info
Uri
User-Agent
X-Ad-Defer-Variation
Resin-Trace
X-LiteSpeed-Cache-Control
X-TA-CDN-Provider
X-Via-CDN
X-Site-Version
X-Via-Edge
Srvid
Edge-Copy-Time
A
Locid
Sid
X-Via-SSL
X-Is-Tablet
X-Is-Supported-Browser
YJS-ID
CF-Ctrl
X-Browser-Name
X-Is-Desktop
X-Is-Mobile
X-Cached-By
X-Tcp-Rtt
X-FL-EDGE
X-Locale
X-FL-QIT-DEBUG
X-Nitro-Cache-From
X-Nitro-Rev
GeoIp-Country-Code
X-NGINX-Cache
X-CS
X-FireWall-Port
X-Contensis-Viewer-Groups
X-Moov-T
X-Moov-Xdn-Version
X-ATG-Version
X-Cache-ASPX
True-Client-Ip
X-CSRF-TOKEN
SID
X-VCache
X-Varnish-Authentication
Cdn
X-Hyper-Cache
XServer
Cache-Key
Epwk-X-Cache
True-Client-IP
GeoIP-Country-Code
X-NewRelic-App-Data
X-MSEdge-Flight
X-MSEdge-Features
X-Upstream-Ht
X-Frame-Option
X-Geo
X-Upstream-Ct
X-Webstats-RespID
X-Service
X-TRACE-ID
X-SRV
CountryCode
X-FPC
Fastly-Drupal-Html
X-Planisys-CDN-Rules
X-Planisys-CDN-TTL
State
NtCoent-Length
Path
X-Datacenter
X-Platform-Server
X-Planisys-CDN-Cache
X-HS-Content-Campaign-Id
X-HostName
Tcn
X-Fastly-Cache
X-Release
X-Vgn-Hpd-Variations-Key
X-LiteSpeed-Tag
X-Vgn-Hpd-Ssi
X-VC
X-Vgn-Hpd-Cached
Cf-Ipcountry
X-APP-VERSION
X-Origin-Cache-Key
X-Api-Version
Cdn-Request-Time
X-Edge-Server
X-Pad
Cdncip
X-AK-Request-ID
Cdn-Host
X-Vercel-Cache
X-Vercel-Id
X-Amz-Meta-Opti
Cdnsip
X-Cache-Remote
X-Rocket-Build-Number
Lb
X-Air-Pt
LB
X-Generated-In
X-Esi
X-Sigma-Backend
X-Sigma
X-FTR-Expires
X-FTR-Backend
X-FTR-Cache-Status
X-FTR-Balancer
X-FTR-Backend-Server
X-Country-Code-Real
X-Branch-Name
X-Provided-By
M-TraceId
Req-ID
X-NMSegId
WebServer
X-Wp-Cf-Super-Cache-Cache-Control
WZWS-RAY
X-Wp-Cf-Super-Cache
X-UA
X-Cache-Ttl
Cache
X-HS-Status
X-Traceid
X-Wp-Cf-Super-Cache-Cookies-Bypass
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-Cdn-Request-ID
XkeyRZ
X-GeoIP-City
X-Proxy-CacheRZ
Proxy-Connection
X-Akamai-Pragma-Client-IP
X-Ad-Load-Variation
Cluster
X-Gamma-Serve
X-GoCache-CacheStatus
X-Scheme
Yak-Timeinfo
X-CACHE-KEY
CDN
X-RN-RSRV
X-WP-CF-Super-Cache-Cookies-Bypass
Pramga
X-Request-Start
Content-Style-Type
X-Vc
X-Cdn-Forward
X-M-Reqid
X-M-Log
Srv
Geoip-Latitude
Content-Script-Type
X-Scope-Id
X-Cdn-Cache-Status
X-NWS-UUID-VERIFY
X-FORWARDED-FOR
X-Lb-Cache
Server-Id
Ngx
X-Varnish-Beresp-Status
Env
X-Qnm-Cache
Ohc-File-Size
CF-Cached-On
X-Tim-N
X-Ha-Backend
X-Shield-Cache-Expires
X-TT-LOGID
Serverid
X-Request-URI
X-Edge-POP
X-Lb-Nocache
X-EC-Lua
X-Dw-Trace-Id
Kp-EeAlive
X-Cache-Date
X-Acquia-Application-UUID
Edge-Cache
X-Acquia-Purge-Tags
X-Acquia-Application-Trace
X-Via-Ucdn
PICS-Label
X-VCL-Version
X-Acquia-Site
Yjs-Id
X-CF-Cache-Header-Vary
X-TH-Server
X-CUA
X-Check-Cacheable
X-CF-Cache-Header-Cache-Control
X-Serial
X-User
X-Udemy-Cache-App-Namespace
X-Render-Time
X-Cached-Since
X-Edge-Pop
Cache-Tv-Group
CACHE-MISS-TO-ORIGIN
X-Iauth-Set-Uid
X-Location
X-Mobile-URL
X-MiniProfiler-Ids
Inserted-Into-Cache-At
X-Fastly-Cache-Hits
Log-Origin
X-RAMCache
X-Miniprofiler-Ids
X-Litespeed-Cache-Control
X-ElasticPress-Query
X-Snapshot-Date
Vha6-Origin
Cneonction