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
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Last-Modified
CF-RAY
Cf-Request-Id
CF-Cache-Status
X-XSS-Protection
Accept-Ranges
Link
Pragma
ETag
Expect-CT
X-Powered-By
Via
Age
X-Cache
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
Referrer-Policy
P3P
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
Alt-Svc
X-UA-Compatible
X-Served-By
X-Timer
X-Download-Options
Access-Control-Allow-Headers
X-Request-Id
X-Varnish
Access-Control-Allow-Methods
Access-Control-Allow-Credentials
X-AspNet-Version
X-Runtime
X-Adblock-Key
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-Permitted-Cross-Domain-Policies
X-Check
X-Xss-Protection
X-Cache-Status
X-Generator
X-DNS-Prefetch-Control
X-Cacheable
Timing-Allow-Origin
X-Content-Security-Policy
X-Ua-Compatible
X-Iinfo
X-Request-ID
Content-Encoding
X-CDN
Feature-Policy
X-AspNetMvc-Version
Status
X-Envoy-Upstream-Service-Time
Access-Control-Expose-Headers
X-Drupal-Dynamic-Cache
Upgrade
X-Via
Access-Control-Max-Age
Keep-Alive
X-Ws-Request-Id
X-Age
X-Robots-Tag
X-AH-Environment
X-Turbo-Charged-By
EagleId
Request-Context
X-Proxy-Cache
X-Cache-Group
Server-Timing
X-Server
X-Backend
X-Hacker
Host-Header
X-Server-Powered-By
Report-To
X-Amz-Request-Id
X-Nginx-Cache-Status
Grace
X-Amz-Id-2
X-UA-Device
X-Dns-Prefetch-Control
P3p
X-Rq
X-Varnish-Cache
X-Swift-SaveTime
X-Swift-CacheTime
Ali-Swift-Global-Savetime
X-LiteSpeed-Cache
X-Page-Speed
Cf-Railgun
X-Pingback
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-OneAgent-JS-Injection
X-Device
X-Amz-Version-Id
NEL
X-WebKit-CSP
X-Cache-Spec
X-CST
X-Vhost
Allow
X-Host
X-Backend-Server
X-Server-Id
Xkey
EagleEye-TraceId
X-Dispatcher
Surrogate-Control
X-Node
Request-Id
X-Response-Time
Content-Location
X-Akam-SW-Version
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-ASPNET-VERSION
X-Cache-Lookup
X-Ruxit-JS-Agent
X-Application-Context
Accept-CH
X-Ac
X-Country
X-Mod-Pagespeed
X-Template
X-Cloud-Trace-Context
Accept-Ch-Lifetime
Accept-Ch
X-Language
X-Readtime
Accept-CH-Lifetime
X-B3-TraceId
MS-Author-Via
X-Url
Rating
X-HW
X-Cnection
X-Origin-Cache
X-MS-InvokeApp
X-TtlSet
X-Vname
X-PC
Edge-Control
X-Clacks-Overhead
X-GitHub-Request-Id
X-ESI
X-Trace
Display
X-Sol
Response
X-Middleton-Response
X-Middleton-Display
Pagespeed
X-Content-Type
X-Varnish-TTL
X-ORACLE-DMS-RID
X-D2id
Verso
Arr-Disable-Session-Affinity
X-ORACLE-DMS-ECID
X-Kinja
X-Kinja-Build
X-GoogleNews-Bot
X-Cdn-Fetch
X-Exp-Variant
X-Exp-Id
X-Kinja-Revision
X-Use-Magma
X-Kinja-Server
X-Vcap-Request-Id
X-Goog-Hash
X-Country-Code
X-Rack-Cache
X-Powered-By-Plesk
X-Navigation-Version
X-Oneagent-Js-Injection
X-VARITI-CCR
Service-Worker-Allowed
X-Server-Name
X-Amz-Rid
X-TTL
X-Fastly-Request-ID
X-Abt-Application-Version
Fastly-Restarts
X-Buckets
X-Client-IP
X-Cached
X-Cache-TTL
X-FastCGI-Cache
X-MSEdge-Ref
X-Release
X-Element-Page-Cache
X-Dw-Request-Base-Id
X-NF-Request-ID
SPRequestGuid
X-SharePointHealthScore
MRF-Tech
X-B3-TraceId-Primal
Mrf-Cache-Status
Public-Key-Pins
SPIisLatency
SPRequestDuration
Pinterest-Generated-By
X-Pinterest-Rid
Pinterest-Version
Access-Control-Request-Method
RTSS
Cache-Tag
X-Edge
AR-PoweredBy
AR-ATIME
AR-Request-ID
AR-CACHE
Ar-Sid
X-LLID
X-Ezoic-Cdn
X-Powered-CMS
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-Upstream
Content-MD5
X-Version
X-HP-Webp
X-Jurisdiction
X-Webkit-CSP
S
X-Origin-Upstream-Status
X-Recruiting
X-DynaTrace
X-MCACHE
X-ECACHE
X-Mid
Charset
X-Mg-S
Fusion-Template-Id
Fusion-Source
Fusion-Component-Id
Fusion-Deployment-Id
Fusion-Content-Source
Fusion-Content-Id
X-Ruxit-Js-Agent
X-Kinsta-Cache
X-PressLabs-Stats
X-Content-Digest
X-Ttl
X-Px
X-T
Cache-Tags
Fastcgi-Cache
X-Litespeed-Cache
X-Fastcgi-Cache
X-Accel-Expires
X-Id
X-Logged-In
X-Forwarded-Proto
Filters
X-Content-Security-Policy-Report-Only
Server-Node
X-Amz-Server-Side-Encryption
Edge-Cache-Tag
TCN
MicrosoftSharePointTeamServices
TP-Cache
TP-L2-Cache
Front-End-Https
Server-Name
X-Forwarded-For
X-Grace
Nginx-Cache
X-Request-Received
X-Request-Processing-Time
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Hits
X-Correlation-Id
X-Amzn-Trace-Id
X-Debug
X-XRDS-LOCATION
X-B3-Sampled
X-Shield-Request-Id
X-Request-Handler-Origin-Region
X-Microsite
X-Varnish-Age
X-Activity-Id
X-AppVersion
X-Az
X-HS-Combine-CSS
X-HS-Content-Id
X-HS-Cache-Config
X-HS-Hub-Id
X-Yandex-Sdch-Disable
Alternate-Protocol
X-F-Cache
X-Amz-Replication-Status
Surrogate-Key
X-Goog-Stored-Content-Length
X-Goog-Stored-Content-Encoding
X-Origin-Server
X-Goog-Storage-Class
X-Goog-Metageneration
X-Goog-Generation
X-GUploader-UploadID
X-Ser
X-DIS-Request-ID
Nel
X-Frontend
X-NWS-LOG-UUID
Accept-Charset
X-Rid
X-Geo-Country
X-XRDS-Location
X-Cache-Age
Section-Io-Cache
Host
X-Git-Hash
X-Hostname
X-Respond-Thread
X-RateLimit-Remaining
X-Upgrade-Enabled
X-DataDome
Access-Control-Allow-Method
X-VCache
X-Time
X-LB-Cache
X-Mobile-URL
X-Daa-Tunnel
MS-CV
X-Seen-By
X-Server-ID
Paypal-Debug-Id
ServerID
X-Type
X-IPLB-Instance
X-Source
X-AOL-HN
X-TT
Payment
X-Cache-Action
Healthy
X-Content-Options
X-Varnish-Backend
X-Request-Guid
X-Flags
X-Is-Crawler
X-Aspnet-Duration-Ms
X-App-Environment
X-Cache-Key
Cache
X-Route-Name
Cleartype
X-Whom
X-Providence-Cookie
X-Signature
X-B-Cache
X-Debug-Info
X-Page-Id
Fastcgi-Useragent
X-Pinterest-Direct
X-Load-Cache
X-WebKit-CSP-Report-Only
X-Jobs
X-FTR-Request-ID
X-N
X-Contextid
Realpath
X-FB-Debug
X-Webkit-Csp
X-Mobile
X-Browser-Type
X-Erf-Bev-Bev
X-Erf-Bev-Bev-Is-Generated
Node
Powered-By-ChinaCache
X-Rule
Refresh
X-Cache-Expired-At
X-Accel-Buffering
X-Original-Request-Id
X-Response-Served-From
Version
Ms-Operation-Id
DC
X-Proxy
X-Wix-Request-Id
X-Drupal-Cache-Tags
X-RTag
Referer-Policy
Access-Control-Request-Headers
X-Framework
X-Cluster-Name
X-Content-Powered-By
X-Cacheable-TTL
X-Zen-Fury
X-B
X-HTML-Minification-Powered-By
X-Instance
Viewport
X-ProcessESI
X-Real-IP
X-RemovedCookies
X-UUID
X-Cache-Control
X-Region
X-Tt-Trace-Tag
X-Tt-Trace-Host
X-IPS-LoggedIn
Eomportal-Instance
VIX-Pulpo-Upstream-Status
X-Cache-Time
X-Distributor
X-Page-View
VIX-Pulpo-Node
X-Via-JSL
X-FireWall-Port
X-Drupal-Cache-Contexts
X-FW-Static
X-FW-Server
X-FW-Serve
X-FW-Type
X-FW-Dynamic
X-FW-Hash
Countrycode
X-Cache-Operation
X-Cache-Rule
X-Cached-By
Liferay-Portal
X-Akamai-Edgescape
X-Yottaa-Metrics
X-Yottaa-Optimizations
X-G
X-Tumblr-Pixel-0
X-Cache-Hit
X-Tumblr-Pixel-1
X-Tumblr-Pixel
X-Tumblr-User
X-Tec-Api-Root
X-Environment-Context
X-L-Path
X-Nginx-Cache
X-Tec-Api-Version
X-Tec-Api-Origin
X-App-Server
X-Pass-Why
Xserver
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-Debug-IsPreview
X-Debug-IsConnected
SRV
DynaTrace
CF-IPCountry
X-Www-Served-By
Section-Io-Origin-Time-Seconds
X-Protected-By
Section-Io-Origin-Status
Section-Io-Id
Section-Origin-Responded
Server-Info
X-User-Agent
X-Device-Type
X-Varnish-Grace
From-Origin
Webserver
X-Tumblr-Pixel-2
X-Mode
GEO-INFO
Ec-Rule-Version
X-Adobe-Content
X-Adobe-Loc
X-UPSTREAM-Address
X-ES-SERVER
X-Ratelimit-Limit
Meta-Geo
X-Endurance-Cache-Level
X-RN-RSRV
X-Handled-By
Retry-After
X-Hl-Ver
X-MP-GENERATED-AT
X-Uri
Cache-Status
X-Backend-Name
Cache-Tv-Group
TWC-GeoIP-Country
X-Varnishpool
TWC-GeoIP-LatLong
TWC-Connection-Speed
Fastly-SSL
Decoy-Debug-Key
TWC-Locale-Group
Property-Id
Decoy-Debug-Status
TWC-Device-Class
Frame-Options
Apigw-Requestid
Decoy-Debug-TTL
Country
X-Varnish-Server
Webcakes-App-Name
X-Format
X-Pubstack
X-Request-Time
X-Cache-Server
X-Section
X-BYPASS-REASON
X-ProxyCache-Status
X-ProxyCache-Key
X-Labrador-Cache-Channel
X-Origin-Hint
X-Human
X-PCL
X-PHP-Host
X-Access
X-FB-TRIP-ID
X-Soup
X-OCL
Webcakes-App-Version
Webcakes-Region
TWC-Privacy
X-Storage
Azure-RegionName
Azure-SlotName
Azure-Version
X-PERF
Azure-InstanceId
X-Via-Fastly
X-NYM-Debug-Backend
X-Timing-Wait
X-No-Session
X-LJ-Flow-ID
X-Sql-Duration-Ms
X-LAGOON
X-VWS-Id
X-Sql-Count
X-S-Maxage
X-UA-Device-Type
X-WA-Info
X-Be
X-AWS-Id
Selected-Fe
Mn-Server-Ip
X-ApacheServer
X-Proxy-Build
X-Server-W
X-R9-Blue-Green-Version
X-Redis-Cache
X-Proto
Azure-SiteName
X-Web-Node
X-Site-Version
X-Origin-Date
X-SayCDN-TTL
X-Say-TTL
Protected
X-Hyper-Cache
X-Xfnlog-Site
X-Cache-TTL-Remaining
X-Status
X-Hosted-By
Cache-Name
X-Locale
X-Zipkin-Id
X-Routing-Service
X-Info
X-Say-Cacheable
X-Proxied
X-Alternate-Cache-Key
X-AIR-PT
X-GG-Cache-Date
X-Sorting-Hat-PodId
X-TNCMS
X-Shopify-Stage
X-ShopId
X-Storefront-Renderer-Rendered
X-FW-Version
X-Loop
X-Sorting-Hat-ShopId
X-ShardId
X-TT-LOGID
X-Cluster
X-Rendered-As
X-Is-Bot
X-Proxy-Cache-Status
AMP-Access-Control-Allow-Source-Origin
X-Node-Name
X-Dc
Uber-Trace-Id
X-Cache-Enabled
X-TA-CDN-Provider
X-CCM
X-Forwarded-Host
X-Cache-Grace
X-Content-Age
X-Microcachable
S-Cnection
X-Revision
X-Qloud-Router
X-NWS-UUID-VERIFY
X-Azure-Ref
X-Backend-Host
X-Via-CDN
X-Platform
Cache-Hits
X-CSRF-Token
X-Varnish-Ttl
Amp-Access-Control-Allow-Source-Origin
X-Correlation-ID
X-SRV
X-Aspnetmvc-Version
Akamai-GRN
X-Trace-Id
X-Detected-As
X-Cache-Host
X-App-Version
X-EdgeConnect-Cache-Status
X-ATG-Version
ServedBy
X-FTR-Balancer
X-Cache-NGX
X-FTR-DC
X-Cache-PHP
X-FTR-Backend-Server
X-FTR-Backend
X-Country-Code-Real
X-Amzn-Remapped-Content-Length
X-Amz-Apigw-Id
X-FTR-Cache-Status
X-Amzn-RequestId
X-FTR-Realm
X-Varnish-Hostname
X-B3-SpanId
X-Debug-Cache
X-RCS-CacheZone
X-Ratelimit-Remaining
HostName
SD-X-WS
X-Amz-Meta-S3cmd-Attrs
X-Oss-Hash-Crc64ecma
DB-Nickname
X-Oss-Server-Time
X-Nc
X-CACHE-KEY
X-Oss-Storage-Class
X-Oss-Object-Type
X-Oss-Request-Id
X-BCube-Filmed-By
X-CS
X-FTR-Expires
X-Akamai-Transformed
X-Time-Microsecs
X-DynaTrace-JS-Agent
Tracecode
Backend
X-Adobe-Source
X-TX-ID
X-Ms-Request-Id
X-ServerID
X-Backend-TTL
X-Ms-Version
X-Varnish-Cache-Hits
Rendered-Blocks
X-Connection-Hash
Who
X-External-Request-Id
X-ARC
BehaviorPad-Version
X-B-Cookie
X-D
X-CF-Lambda-Version
X-Level-Front-Cache
X-Destination
DCR-Decision-By
DCR-Processing-Time-Ms
X-NAPM-TraceId
X-Location
X-CF-Lambda-Fn
X-Cache-NE
Expiry
X-Trv-Group
MD5-Digest
X-Session-Fingerprint
X-ScT
X-From
X-S-Cookie
X-A-Dgt
X-Origin-TTL
X-SRCache-Key
X-Origin-CC
X-A-Wwc
X-Air-Hostname
X-S
X-Owner
X-A-Dam
X-Processor
X-PBS-Appsvrname
X-A-Dcw
X-A-Ccd
X-A
X-Rojux
X-Rewrite-Enabled
X-PAYTM-SRV-ID
X-Request-UUID
Fastcgi-X-Cache-Version
Xc-Version
X-Vdms-Path
X-Vdms-Version
Mobile-Detection-Method
X-Generated-On
T-Server
Odigeo-Trace-Id
X-Generation-Time
X-Application
X-Aed
X-VG-WebCache
Meta-Geo-Continent
Machine
X-Vtex-Processado-Em
X-Vtex-Remote-Cache
X-VG-WebServer
X-Varnish-Beresp-Grace
X-Unique-Id
X-NewRelic-App-Data
Country-Code
AKAMAI
X-Device-Os
X-Developers
X-Fastly-Cache
X-FC-Vary-Parameters
Thinkindot-CacheControl-Type
Magicmarker
UCS
Thinkindot-Control
Thinkindot-CacheControl
On-Server
V-Age
Wxu-Next-Commit
Gh-Request-Id
Host-ID
Wxu-Next-Region
Wxu-Next-Hostname
Fastly-Backend-Name
Ssr
X-Cache-Info
X-Cms-Context
CacheControlHeader
X-Core-Value
X-Cache-Bucket
Content-Disposition
Pagetype
Path
Server-Host
X-Bip
Cache-Host
X-OVcl-Cache
X-Tb
X-OVcl
X-Policy
X-Fetched-On
X-Mvc-Supplant-Cachable
X-Irp-Debug
X-Micro-Cache
X-Reqid
X-Unique-ID
X-Thinkindot-L3
X-TrackingId
X-Tumblr-Pixel-3
X-Thanos
X-Swa-Ws
X-B3-Traceid
Release
X-HS-Content-Campaign-Id
X-Magnolia-Registration
X-Generated-In
X-Geo-Header
X-GeoIP-City
X-Varnish-Beresp-Ttl
X-Sucuri-ID
User-Cache-Control
X-APP-VERSION
X-GEO
X-Wikidot-Backend
X-WADP-Cache
True-Client-Country-4JS
Vix-Hermes-Req-Id
X-Request-URI
X-Request-Host
X-Scheme
X-Eu-Site
X-Wikidot-Static-Cache
X-Skip-Cache
Web-Mar-Node
X-VG-TLSProxy
Sever-Int
X-User
Server-Hostname
X-Gen-Mode
X-Fmm-Version
Server-Ext
X-Var-Ttl
X-Varnish-Hits
X-Esi-Check
X-VServer
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
X-Generated-By
X-VarnishDD-TTL
X-Fastly-Backend
X-Dispatcher-Server
X-Li-Fabric
X-JWT-State
X-Li-Pop
X-Cache-Id
X-LI-UUID
X-Cache-Debug
X-CGP
X-Clara-WADP
X-Hnp-Log
X-Csrf-Jwt
X-Has-Esi
X-IP
X-Is-Gdpr
X-Gzip
X-Branch-Name
X-Method
X-GeoIP
X-Old-Content-Length
X-Origin
X-Origin-Response-Time
X-Envoy-Decorator-Operation
X-HN
X-Node-Id
X-Nginx-Cache-Key
X-Developer
X-Block-Status
X-GoCache-CacheStatus
X-Backend-State
X-Azure-Ref-OriginShield
X-Ratelimit-Reset
X-Cache-Var
CDN-Cache
CDN-CachedAt
CDN-EdgeStorageId
CDN-PullZone
Ha-Gx-Prefs
HA-Ipaddr
L5d-Success-Class
L
C-Via
X-Cdn-Forward
X-Cache-Var-Map
DSUID
Cf-Bgj
Cf-Device-Type
X-RateLimit-Limit
Esi-Enabled
CDN-RequestCountryCode
CDN-RequestId
CDN-Uid
Arc-Version
CDCHOST
PB-PID
Apple-News-Services-Parsed-Url
Origin
Apple-News-Services-Handled
PB-RID
X-Varnish-Beresp-Status
PFcat
NM-Fastcgi-Cache
Apple-News-Services-Host
Location
NGX
Apple-News-Services-Request-Url
Locid
Filterid
X-EC-Lua
X-ID
X-Hash
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Rebelmouse-Cache-Control
X-LB-ID
X-Platform-Server
X-DefHash
X-DefElseHash
X-Origin-Expires
X-NU-AKA-ACS-Version
X-Clientip
X-Rebelmouse-Surrogate-Control
Adler-Geo
X-Cache-Tags
X-DPWN-IS-SECURE
X-Slack-Backend
Fastly-SWR
X-Varnish-Remaining-TTL
X-Varnish-CookieINHashed-On
Fastly-SIE
Is-Eu
IsBot
Platform
Rt-Fastcgi-Cache
SR-User-Adfree
X-Aicache-OS
Instruction
X-Varnish-CookieHashed-On
X-SIPLIST1
Fastly-Drupal-HTML
X-Gamma-Serve
X-Variation
X-Loc
X-CUA
X-Mvc-Supplant-OutputCached
X-Epic-Correlation-Id
X-Varnish-Url
Pics-Label
X-Planisys-CDN-TTL
X-Planisys-CDN-Rules
Sid
X-Planisys-CDN-Cache
Lfy
Geo-Info
X-PF-Uncompressing
X-Matched-Rule
X-Cache-Backend
X-Via-Popv
CloudFront-Viewer-Country
X-Refresh
X-Cache-Expires
X-Via-Popn
Url
X-Via-Poph
X-Servername
Req-Svc-Chain
X-NCache
Cmsid
Cmstype
NGB
X-Sn-Servicetimems
X-Cdn-Origin
Pramga
X-Served-From
X-Core-Mission
Svr
Kp-EeAlive
X-TraceId
X-Srv
X-Cache-Date
X-Tb-Optimization-Total-Bytes-Saved
Viewtype
VivaBuild
A
X-Request-Start
MIME-Version
Cache-Key
M-TraceId
X-Vgn-Hpd-Reason
X-Error
Source
Cross-Origin-Opener-Policy
X-FireWall-Protection
Arc-Country
X-CLOUD-TRACE-CONTEXT
X-Webkit-CSP-Report-Only
TDXMobile
X-Varnish-Cacheable
Geoip-Latitude
X-DC
GeoIp-Country-Code
Server-ID
DataCenter
X-JoinUs
X-NC
X-NGENIX-Cache
X-SaId
X-PHP-Backend
X-Servedbyhost
X-Vc
X-Wa
Tcn
X-Edge-Location
X-HS-Status
X-Response-By
NtCoent-Length
X-B3-Spanid
Content-Secure-Policy
Xkeyi7
X-CDN-Forward
X-Vcl-Version
X-Air-Source
SID
X-Service
X-Proxy-Cachei7
X-Geo
X-BBXSRF
HitType
X-LiteSpeed-Cache-Control
X-Li-Proto
N-Cache
X-Esi
X-Internal-Host
Server-Ttl
X-Extlb
Resin-Trace
CACHE
X-Forwarded-Site
X-LI-Proto
X-Kraken-Routeconfig-Destination
FSS-Cache
X-Server-Lifecycle-Phase
S-Rt
X-Instrumentation
X-Cache-2
X-Kraken-Loop-Name
X-HOST
X-Edge-Location-Klb
X-Cache-Remote
X-Bc-Bl
X-RAMCache
X-Cc-Req-Id
X-Svr
X-Via-NSCOPI
X-Cc-Via
X-CCDN-Origin-Time
X-Viewer-Country
Request-ID
D-Cc-Upstream
X-VCL-Version
X-Contensis-Viewer-Groups
X-Varnish-Authentication
X-Hcs-Proxy-Type
X-Cache-ASPX
X-CCDN-CacheTTL
X-Erf-Stays-Bingo-Pdp-Web
X-UA
Cteonnt-Length
X-Cs
X-WA
X-RPS
We-Hiring
X-Accel-Expires-Debug
X-RSL
X-TIM-N
Surrogated-Key
Mail-Subject
LB
X-Newrelic-Synthetics
Memcached
X-PJAX-URL
X-Proxy-Upstream
X-DB
X-Req
X-Date
X-RPM
X-DI
X-DW
X-DSS
Cross-Origin-Window-Policy
Hostname
X-Sucuri-Cache
Ohc-File-Size
X-RateLimit-Remaining-Second
X-VC-Cache
GeoIP-Latitude
Env
X-App
X-RateLimit-Limit-Second
GeoIP-Country-Code
X-Server-IP
X-ServedByHost
XServer
X-Host-Name
X-ZONE
X-Gdpr
X-API-Version
X-Origin-Time
ProcessTime
CF-Cached-On
X-Nyt-Route
X-Cache-Config
Server-Id
X-FPC
X-Sigma-Backend
X-Men
X-Action
X-Rocket-Build-Number
X-Sigma
Upgrade-Insecure-Requests
X-APP
X-HostName
X-TIME
X-CF-Powered-By
X-Oss-Cdn-Auth
X-Check-Cacheable
Time
CPC-Age
CPC-Cache
VNS-Age
VNS-Cache
X-Air-Trace-Id
X-Region-Sid
X-MSEdge-Flight
Cache-Provider
Mime-Version
Memory
X-NodeID
X-MSEdge-Features
X-SN
X-VC
X-Fpc
X-Swift-Error
X-Dynatrace-Js-Agent
Ohc-Cache-HIT
X-Provided-By
W
X-FORWARDED-FOR
X-SD-PageType
X-Depends-On
X-Webstats-RespID
X-Zone
X-SB
Srv
X-Akamai-Pragma-Client-IP
X-Cdn-Request-ID
X-BBC-Edge-Cache-Status
X-BACKEND-TTL
CDN
X-Ftr-Cache-Host
X-CSRF-TOKEN
Cdn
X-UnsetCookies
X-ServerName
X-Client-Ip
X-Fastly-Backend-Reqs
X-Dw-Trace-Id
X-Parent-Response-Time
X-Fastly-Request-Id
X-ABtesting
Dnion-Transfer-Encoding
X-Flog
X-Hello
My-App
State
X-Render-Time
Fastcgi-Cache-TTL
EpKe-Alive
X-Acquia-Purge-Tags
X-Cache-Tag
X-Via-PopN
Media-Length
X-Via-PopV
X-Acquia-Application-UUID
X-Oracle-DMS-ECID
X-Via-PopH
X-Presslabs-Stats
X-Pf-Uncompressing
X-NGINX-Cache
Vha6-Origin
X-Minions-Version
X-Acquia-Site
Proxy-Connection
X-Pad
X-Acquia-Application-Trace
X-ElasticPress-Search
X-Snapshot-Date
X-Worker
PICS-Label
X-Auto-Login
X-Mg-Request-UUID
Processtime
Epwk-X-Cache
X-LiteSpeed-Tag
X-BBC-Origin-Response-Status
Cf-Ipcountry
X-FTR-Cache-Host
X-Cluster-Node
X-ElasticPress-Query
Xet-Cookie
X-Vcache
OT-Force-Account-Verify
X-Akamai-ERRuleID
X-Akamai-ERPolicy
Warning
X-MiniProfiler-Ids
X-Varnish-Beresp-TTL
X-Request-URL
X-Ms-Meta-Staticbatchstarttime
X-Ms-Meta-Originalurl
X-Lb-Id
X-Varnish-URL
X-Tx-Id
X-Ua
X-Cache-Type
CountryCode
X-Apw-Access-Token
X-Apw-Hits
X-Redis-Duration-Ms
X-Apw-Access-Object
X-Cache-Status-Check
X-Apw-Access-Action
Datacenter
X-Mg-Request-Id
X-Orig-Expires
X-Shop-Environment
X-Tenant
X-ND-Cache
X-Forwarded-Path
X-Redis-Count
X-Traceid
URI
Content-Script-Type
X-Tid
Ohc-Response-Time
X-IN-APIGATEWAYSSL
X-IN-APIGATEWAY
Inserted-Into-Cache-At
X-Debug-Cache-Fetch
X-Storefront-Renderer-Verified
X-Amz-Meta-Cb-Modifiedtime
X-Litespeed-Cache-Control
X-Debug-Cache-Store
Environment
NnCoection
Phost
X-B3-Parentspanid
Content-Style-Type