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
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Accept-Ranges
Expect-CT
X-XSS-Protection
CF-RAY
Pragma
X-Powered-By
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
X-UA-Compatible
P3P
X-Xss-Protection
X-Served-By
X-Download-Options
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Request-ID
X-Adblock-Key
Access-Control-Allow-Credentials
CF-Ray
X-Permitted-Cross-Domain-Policies
X-AspNet-Version
X-Request-Id
Alt-Svc
Content-Security-Policy-Report-Only
X-Runtime
X-DNS-Prefetch-Control
X-Drupal-Cache
X-Check
X-Cache-Status
X-Generator
X-Cacheable
P3p
Timing-Allow-Origin
X-FRAME-OPTIONS
X-Iinfo
X-Envoy-Upstream-Service-Time
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Upgrade
Access-Control-Expose-Headers
Status
X-AspNetMvc-Version
X-CDN
Access-Control-Max-Age
X-Via
Server-Timing
X-UA-Device
X-Robots-Tag
Request-Context
X-Turbo-Charged-By
X-Cache-Group
X-Amz-Request-Id
EagleId
X-Amz-Id-2
X-Backend
Keep-Alive
X-AH-Environment
X-Proxy-Cache
X-Ws-Request-Id
X-Server
X-Age
Host-Header
X-Hacker
X-Ua-Compatible
Cf-Edge-Cache
X-Vhost
X-Server-Powered-By
X-Rq
Allow
X-Varnish-Cache
X-Dispatcher
Grace
X-Amz-Version-Id
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-LiteSpeed-Cache
X-OneAgent-JS-Injection
X-WebKit-CSP
Accept-CH
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
Cf-Apo-Via
X-Device
X-Page-Speed
Cf-Railgun
X-Aws-Lambda-Call-Status
X-Server-Id
X-Host
X-Node
X-Pingback
X-Cache-Spec
X-Nginx-Cache-Status
X-Akam-SW-Version
Surrogate-Control
X-Dns-Prefetch-Control
X-Backend-Server
EagleEye-TraceId
Request-Id
X-Cache-Lookup
X-Readtime
X-Ruxit-JS-Agent
X-HW
X-Cloud-Trace-Context
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Content-Security-Policy-Report-Only
X-Trace
X-Application-Context
X-Response-Time
Accept-Ch-Lifetime
Permissions-Policy
X-CST
X-Mod-Pagespeed
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
Accept-CH-Lifetime
X-Edge
X-WebKit-CSP-Report-Only
Content-Location
X-Country
X-Content-Type
X-Mcache
X-ECACHE
Rating
X-Clacks-Overhead
X-MS-InvokeApp
X-Url
X-Vname
X-TtlSet
X-PC
X-Midtier
X-Amz-Server-Side-Encryption
RTSS
X-VARITI-CCR
X-B3-TraceId
Cache-Tag
X-Vcap-Request-Id
X-Varnish-TTL
X-D2id
X-Element-Page-Cache
Verso
Origin-Trial
X-Ac
X-Exp-Id
X-Server-Name
X-Kinja-Server
X-Use-Magma
X-Kinja
X-GoogleNews-Bot
X-Exp-Variant
X-Kinja-Revision
X-Kinja-Build
X-Cdn-Fetch
X-Rack-Cache
X-Litespeed-Cache
X-Cnection
X-Cache-TTL
X-Powered-By-Plesk
Service-Worker-Allowed
X-ESI
Xkey
X-Navigation-Version
X-Client-IP
X-Abt-Application-Version
X-NWS-LOG-UUID
X-Ttl
X-Amz-Rid
SPRequestGuid
X-SharePointHealthScore
X-GitHub-Request-Id
Edge-Control
X-Cached
X-Fastcgi-Cache
X-Px
X-Mg-S
X-Kraken-Loop-Name
X-Browser-Type
X-Erf-Bev-Bev
X-Instrumentation
Arr-Disable-Session-Affinity
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev-Is-Generated
X-Upstream
SPIisLatency
SPRequestDuration
X-Correlation-Id
X-Middleton-Display
X-Cache-Key
Pagespeed
Display
X-Sol
Content-MD5
X-Dw-Request-Base-Id
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-NF-Request-ID
Access-Control-Request-Method
Edge-Cache-Tag
X-Goog-Hash
X-XRDS-Location
X-Daa-Tunnel
Front-End-Https
X-Country-Code
Public-Key-Pins
X-Version
X-Forwarded-For
X-Powered-CMS
AR-ATIME
AR-CACHE
AR-PoweredBy
AR-Request-ID
AR-SID
X-Id
TCN
X-MSEdge-Ref
X-Jurisdiction
X-T
X-Recruiting
X-HP-Trace-Id
X-HP-Webp
X-RateLimit-Remaining
X-Content-Digest
X-Accel-Expires
X-Middleton-Response
Response
X-B3-TraceId-Primal
Mrf-Cache-Status
MRF-Tech
X-Shield-Request-Id
X-Ser
TP-L2-Cache
TP-Cache
Nginx-Cache
X-Amzn-Trace-Id
S
X-Hits
X-Request-Received
X-Request-Processing-Time
X-HS-Content-Id
X-HS-Cache-Config
X-HS-Combine-CSS
X-HS-Hub-Id
Server-Node
Cache-Status
X-Distributor
X-Kinsta-Cache
X-Edge-Location-Klb
X-Fastly-Request-ID
X-Ratelimit-Limit
Cache-Tags
MicrosoftSharePointTeamServices
X-Grace
Fastcgi-Cache
Alternate-Protocol
Server-Name
X-TEC-API-ORIGIN
X-DataDome
X-TEC-API-VERSION
X-TEC-API-ROOT
X-Protected-By
X-Ezoic-Cdn
X-DIS-Request-ID
X-Ratelimit-Remaining
X-Origin-Server
X-Ratelimit-Reset
X-Geo-Country
X-Ua-Browser
X-Ruxit-Js-Agent
X-LB-Cache
X-Frontend
X-Microsite
X-Request-Handler-Origin-Region
X-Rid
X-Debug-Info
X-Varnish-Backend
Cross-Origin-Opener-Policy
X-Www-Served-By
Cleartype
X-Logged-In
Healthy
X-Git-Hash
Filterid
Payment
X-NGENIX-Cache
X-Forwarded-Proto
X-FB-Debug
X-TTL
X-Page-Id
X-Load-Cache
Charset
X-B3-Sampled
Content-Disposition
X-Webkit-Csp
X-PressLabs-Stats
X-VCache
X-ASPNET-VERSION
X-Origin-Cache
X-LLID
X-Oracle-Dms-Rid
X-Oracle-Dms-Ecid
X-Cluster-Name
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
DC
MS-Author-Via
X-Hostname
X-Goog-Metageneration
X-GUploader-UploadID
X-Upgrade-Enabled
Retry-After
Accept-Charset
Access-Control-Allow-Method
X-Proxy
X-Activity-Id
X-F-Cache
X-Az
X-AppVersion
Cross-Origin-Resource-Policy
X-Type
X-Contextid
X-Amz-Replication-Status
X-Signature
X-B-Cache
X-Hosted-By
X-Is-Crawler
X-Request-Guid
X-Route-Name
X-Flags
Accept-Ch
Viewport
X-Amz-Meta-S3cmd-Attrs
X-Aspnet-Duration-Ms
X-Varnish-Server
X-Providence-Cookie
X-Revision
Paypal-Debug-Id
X-B
X-Azure-Ref
X-Seen-By
X-TT
X-Whom
X-Wix-Request-Id
Amp-Access-Control-Allow-Source-Origin
X-Fb-Rlafr
Surrogate-Key
X-App-Environment
X-DynaTrace
X-FastCGI-Cache
Realpath
Referer-Policy
X-Source
Count-Hit
X-Aspnetmvc-Version
X-Akamai-Edgescape
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-RateLimit-Limit
X-Mobile
X-App-Server
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-Goog-Generation
X-Goog-Stored-Content-Length
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
Host
X-Cache-Control
X-EdgeConnect-Cache-Status
X-N
X-HTML-Minification-Powered-By
X-Response-Served-From
X-Tumblr-Pixel-0
X-Tumblr-Pixel-1
X-Tumblr-Pixel
X-Tumblr-User
Version
X-Original-Request-Id
X-Varnish-Grace
X-Cache-Rule
Refresh
X-Magnolia-Registration
X-Varnish-Age
X-UUID
X-Oneagent-Js-Injection
Access-Control-Request-Headers
MS-CV
SD-X-WS
Section-Io-Cache
X-Cache-Time
X-RTag
X-Envoy-Decorator-Operation
X-Rule
Ms-Operation-Id
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
X-Status
X-FW-Serve
X-FW-Server
X-FW-Static
Akamai-GRN
X-Environment-Context
X-L-Path
X-Cache-Status-Check
X-Adobe-Loc
X-Cache-Expired-At
X-FW-Type
X-FW-Dynamic
X-Content-Powered-By
X-Cache-Grace
X-FW-Hash
X-Page-View
X-Adobe-Content
Protected
X-FW-Version
X-Rendered-As
X-Is-Bot
GEO-INFO
X-Instance
X-Device-Type
X-RemovedCookies
X-Framework
NGB
X-Http-Reason
X-Cache-Age
X-Servername
X-NYM-Debug-Backend
X-ProcessESI
X-G
X-Cacheable-TTL
X-Jobs
X-Akamai-Request-ID2
X-Backend-Name
Url
X-Template
X-Language
X-User-Agent
X-Debug-IsPreview
X-Nginx-Cache
X-Debug-IsConnected
X-B3-Traceid
X-CDN-Forward
SRV
X-Newrelic-App-Data
X-Drupal-Cache-Contexts
X-Yottaa-Optimizations
X-Drupal-Cache-Tags
X-Yottaa-Metrics
CDN-RequestId
X-Cache-Hit
WPO-Cache-Message
WPO-Cache-Status
X-Tb
From-Origin
X-Trace-Id
Pinterest-Generated-By
Country
Pinterest-Version
X-Pinterest-Rid
X-Region
X-Tt-Logid
Accept-Language
Front
X-Node-Name
X-URL
X-Real-IP
Fastly-Drupal-HTML
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Fastly-Request-Id
Backend
X-VC-Cache
Uber-Trace-Id
X-Content-Options
X-Mode
Fastly-SWR
Fastly-SIE
Content-Secure-Policy
X-Unique-Id
X-Cache-Operation
X-DynaTrace-JS-Agent
X-Tumblr-Pixel-2
X-UPSTREAM-Address
X-RN-RSRV
Filters
Meta-Geo
X-Rewrite-Enabled
X-Generation-Time
X-COUNTRY
X-Time
Webserver
X-Zen-Fury
X-Amzn-Remapped-Content-Length
X-Rocket-Nginx-Serving-Static
X-Web-Node
X-Section
Azure-InstanceId
X-Proxy-Cache-Info
Azure-RegionName
CF-IPCountry
Onion-Location
X-Format
X-Access
Azure-Version
Azure-SiteName
Azure-SlotName
X-Cache-Server
X-IPS-LoggedIn
X-Cache-TTL-Remaining
X-Say-TTL
X-Say-Cacheable
X-SayCDN-TTL
X-Sql-Duration-Ms
X-Sql-Count
Apigw-Requestid
X-Reqid
X-Cms-Context
X-Adobe-Source
X-Debug
X-Proxy-Cache-Status
X-Sucuri-Cache
X-SRV
X-Cache-Action
X-Cache-Host
X-Sucuri-ID
X-Ua
X-Labrador-Cache-Channel
Cache-Name
CDN-Cache
S-Rt
X-Soup
X-Skip-Cache
X-Origin-Hint
Web-Mar-Node
X-PHP-Backend
X-Server-W
ServerID
X-Content-Age
CDN-EdgeStorageId
X-GeoCode
X-Varnish-Beresp-Grace
X-GeoCountry
X-IPLB-Instance
X-IPLB-Request-ID
Cross-Origin-Window-Policy
X-Forwarded-Host
X-Via-Fastly
CDN-PullZone
CDN-RequestCountryCode
CDN-Uid
CDN-CachedAt
X-AWS-Id
X-UA-Device-Type
X-VWS-Id
Webcakes-App-Version
X-BYPASS-REASON
X-TIME
Webcakes-App-Name
TWC-Privacy
TWC-GeoIP-Country
TWC-GeoIP-LatLong
TWC-Device-Class
TWC-Connection-Speed
Property-Id
X-LJ-Flow-ID
X-Edge-Location
X-Ms-Version
Node
X-Ms-Request-Id
X-Cluster
X-Locale
TWC-Locale-Group
X-PHP-Host
X-ProxyCache-Key
Webcakes-Region
X-R9-Blue-Green-Version
X-Proto
X-ProxyCache-Status
X-Detected-As
X-Proxied
X-Zipkin-Id
X-Xfnlog-Site
X-Cluster-Node
X-Handled-By
Cache-Hits
X-Site-Version
X-Urbn-Site-Id
X-SaId
X-LAGOON
X-JoinUs
X-LSADC-Cache
X-No-Session
X-Routing-Service
X-Extlb
X-Urbn-Context-Path
Locale
X-WP-CF-Super-Cache-Cache-Control
Selected-Fe
Mn-Server-Ip
X-WP-CF-Super-Cache
X-Timing-Wait
WP-Super-Cache
Mime-Version
X-Proxy-Build
Fastcgi-Useragent
DB-Nickname
X-Hl-Ver
Liferay-Portal
X-FB-TRIP-ID
X-Tec-Api-Root
X-Tec-Api-Origin
X-Request-Time
X-Tumblr-Pixel-3
X-Times
Xserver
X-Tec-Api-Version
ServedBy
X-Optimistic-Header
X-Redis-Cache
X-Cache-Debug
X-Air-Hostname
X-Air-Trace-Id
X-XRDS-LOCATION
X-Air-Source
Source
Upgrade-Insecure-Requests
X-CACHE-AGE
X-TNCMS
X-Loop
X-Buckets
X-NWS-UUID-VERIFY
X-Generated-By
X-GEO
X-Origin-Date
X-Akamai-Transformed
Countrycode
X-Mg-Request-UUID
X-Varnish-Hits
CF-Cached-On
X-Uri
X-Director
X-Tid
X-Varnish-Beresp-Ttl
X-Pass-Why
X-Tx-Id
X-TA-CDN-Provider
X-Storage
X-Cdn
Xet-Cookie
X-ARC
Frame-Options
X-Presslabs-Stats
X-Origin-CC
X-FireWall-Port
X-Origin-TTL
X-DC
X-Newrelic-Synthetics
X-Varnish-Cache-Hits
X-Service
X-ECache
X-Sorting-Hat-PodId
X-Sorting-Hat-ShopId
X-Storefront-Renderer-Rendered
X-Alternate-Cache-Key
X-ShardId
X-Varnish-Hostname
X-ShopId
SID
X-Shopify-Stage
X-Trace-ID
X-Esi
X-App-Version
X-Datadog-Trace-Id
X-Datadog-Sampling-Priority
X-Datadog-Sampled
X-Endurance-Cache-Level
X-Datadog-Parent-Id
X-B3-Spanid
Environment
X-AIR-PT
X-Request-Host
Cache-Tv-Group
A
X-D
Meta-Geo-Continent
X-Core-Value
Ngx.Var.Host
Redirect-Candidate
Origin
Gannett-Cam-Experience-Id
Odigeo-Trace-Id
X-A-Dam
MD5-Digest
Host-ID
X-Application
BehaviorPad-Version
X-Aed
X-A-Wwc
X-A-Dcw
X-Epic-Correlation-Id
X-Destination
X-Developer
X-Ec-Fail
X-Ec-GeoHdr
Release
Rendered-Blocks
Thinkindot-Control
X-B-Cookie
Thinkindot-CacheControl-Type
Thinkindot-CacheControl
DCR-Decision-By
WWW-Authenticate
Candidate-Md5Url
X-A-Ccd
X-Bc-Bl
X-A
X-BCube-Filmed-By
DCR-Processing-Time-Ms
TDXMobile
Edge-Cache
Sslversion
X-CMSURLCustom
Req-Svc-Chain
X-A-Dgt
X-Cache-NE
X-Cache-Info
T-Server
Surrogated-Key
X-ServerID
X-BBC-Edge-Cache-Status
X-INCAP-ABP
X-External-Request-Id
X-We-Are-Hiring
X-Platform-Processor
X-ScT
X-Platform-Cluster
Xc-Version
X-Nyt-Route
Server-Info
X-Origin-Time
X-S-Maxage
X-Platform-Router
X-VG-TLSProxy
X-Thinkindot-L3
X-Rojux
X-S
X-SRCache-Key
X-TIM-N
Lang
X-Vdms-Version
X-Processor
X-Vdms-Path
X-Mobile-URL
X-S-Cookie
X-Frame-Option
X-Loc
X-Mid
X-Gdpr
X-Req
X-GeoIP-City
X-Varnish-CookieINHashed-On
X-Varnish-Remaining-TTL
X-Ec-Custom-Error
X-Has-Esi
X-Developers
Tube-Got-Results
Tube-Return
Tube-Got-Eval
Tube-Get-Contents
State
X-HS-Content-Campaign-Id
X-Platform-Server
Server-Host
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
X-Fmm-Version
Magicmarker
X-Sn-Servicetimems
X-Test
X-Gamma-Serve
Vix-Hermes-Req-Id
X-Sigma-Backend
X-Varnish-CookieHashed-On
X-Geo-Header
X-Rocket-Build-Number
X-Restarts
X-VServer
X-Location
X-Origin-Response-Time
X-Generated-On
X-Cache-Bucket
X-CUA
Memcached
X-Cdn-Origin
X-Cdn-Srv
X-Old-Content-Length
X-NodeID
X-Level-Front-Cache
X-Clara-WADP
X-Core-Mission
X-JWT-State
X-WP-CF-Super-Cache-Active
X-DefHash
X-DefElseHash
X-Httpd
X-SD-PageType
X-Served-From
X-WA-Info
X-SB
X-WADP-Cache
X-Is-Gdpr
X-Auto-Login
X-Worker
X-Akamai-Device-Characteristics
X-Human
X-Sigma
Click-Count-Error
Decoy-Debug-Status
Decoy-Debug-TTL
Decoy-Debug-Key
Country-Code
Apple-News-Services-Request-Url
DSUID
X-Pubstack
Apple-News-Services-Handled
Apple-News-Services-Host
Fastly-Backend-Name
Fastly-GeoIP-CountryCode
C-Via
Apple-News-Services-Parsed-Url
Cluster
X-RM-Cache-TTL
Click-Count-Action-Start
Cache-Host
Section-Origin-Responded
Section-Io-Origin-Status
Section-Io-Origin-Time-Seconds
Section-Io-Id
X-Gzip
X-GeoIP-Region-Code
Web-Mar-Region
CacheControlHeader
X-Accel-Buffering
X-App
X-Accel-Expires-Debug
X-Ad-Defer-Variation
Cache-Provider
CDCHOST
X-Vmg-Version
X-Scale
X-Esi-Check
X-Fastly-Backend
Ssr
CloudFront-Viewer-Country
X-Varnish-Beresp-Status
X-Date
X-Dispatcher-Number
X-DPWN-IS-SECURE
X-Slack-Backend
Svr
X-Cache-Id
X-Gen-Mode
We-Hiring
X-GeoIP
X-GeoIP-Country-Code
X-Wix-Viewer-Type
X-Block-Status
X-Cache-FS-Status
Cache-Key
AKAMAI
X-Cache-Backend
Adler-Geo
User-Cache-Control
Origin-CC
X-Var-Ttl
X-Up
NM-Fastcgi-Cache
Origin-EX
X-Variation
X-Fetched-On
Platform
X-Node-Id
X-Origin
X-Request-Start
Is-Eu
L
Kp-EeAlive
X-Planisys-CDN-TTL
Mail-Subject
X-Planisys-CDN-Cache
Gh-Request-Id
X-Planisys-CDN-Rules
Producers
Pics-Label
X-LB-NoCache
Cmstype
X-Minions-Version
Cmsid
X-Hnp-Log
X-Conf
X-Bip
X-Hash
Sever-Int
X-Pool
Server-Ext
Server-Hostname
X-Thanos
X-Nananana
X-Parent-Response-Time
Machine
X-HN
X-Platform
X-Mvc-Supplant-Cachable
X-Refresh
X-Owner
X-Region-Sid
X-FC-Vary-Parameters
X-Slack-Shared-Secret-Outcome
X-Forwarded-Site
X-Qloud-Router
Datacenter
X-VarnishDD-TTL
X-Irp-Debug
X-CacheTTL
PFcat
Fastly-SSL
X-NCache
Wxu-Next-Commit
X-Cache-Tags
X-Nginx-Cache-Key
X-Org
Wxu-Next-Hostname
X-Ckpd-Fst-Backend
X-Device-Os
X-Dispatcher-Server
X-Azure-Ref-OriginShield
Wxu-Next-Region
Cdn
X-Cached-By
X-Men
On-Server
X-Op-Id-All
NGX
X-Server-IP
X-Varnishpool
X-V-Cache
X-CSRF-Token
X-Server-ID
X-Via-Popv
X-Via-Popn
X-Csrf-Jwt
HA-Ipaddr
Ha-Gx-Prefs
X-Varnish-Ttl
X-Via-Poph
X-CGP
Canary
X-Eu-Site
L5d-Success-Class
X-Webkit-CSP-Report-Only
Env
X-Aicache-OS
X-Mvc-Supplant-OutputCached
GeoIP-Latitude
X-Cache-Date
X-Servedbyhost
X-HA-Backend
HostName
X-Tb-Optimization-Total-Bytes-Saved
Server-ID
X-Cache-Remote
Cdncip
X-AK-Request-ID
X-Microcachable
Cdnsip
X-RCS-CacheZone
X-VC
X-Mly-Id
X-APP-VERSION
X-Gateway-Request-Id
X-DataCenter
X-Gateway-Cache-Key
X-API-Version
X-Fpc
X-Gateway-Skip-Cache
X-Gateway-Cache-Status
X-LB-ID
X-Wa
X-ZONE
Load-Balancing
X-Zone
Memory
Cache
X-Nc
Time
X-Fastly-Cache
X-Generated-In
Request-ID
X-Webkit-CSP
X-ND-Cache
X-Origin-Expires
X-Instance-Name
Eomportal-Instance
X-Via-NSCOPI
X-Check-Cacheable
X-Vgn-Hpd-Ssi
X-Vc
X-Vgn-Hpd-Cached
X-Vgn-Hpd-Variations-Key
Ngx-Var-Key
X-HS-Status
X-Release
X-Response-By
X-Micro-Cache
OT-Force-Account-Verify
X-Correlation-ID
X-NewRelic-App-Data
X-Client-Ip
X-CCDN-Origin-Time
X-CCDN-CacheTTL
X-FL-EDGE
X-Hcs-Proxy-Type
Locid
Expect-Staple
X-From
X-FL-QIT-DEBUG
Srvid
Hostname
X-Api-Version
X-Request-URI
X-CS
IsBot
X-SIPLIST1
X-Cache-Enabled
X-Via-CDN
NtCoent-Length
X-CSRF-TOKEN
X-Info
X-Edge-Pop
X-Cache-NGX
AMP-Access-Control-Allow-Source-Origin
X-Via-SSL
X-Via-Edge
X-VCL-Version
Edge-Copy-Time
X-Via-JSL
Srv
X-Provided-By
X-NGINX-Cache
True-Client-Ip
X-MCACHE
Uri
GeoIp-Country-Code
XkeyRZ
X-Proxy-CacheRZ
X-Srv
X-Amz-Meta-Cb-Modifiedtime
X-Debug-Cache-Store
X-Debug-Cache-Fetch
X-Lambda-Id
X-Nf-Request-Id
X-Vcl-Version
Location
True-Client-IP
X-B3-SpanId
X-EC-Lua
X-Dc
X-Cache-Expires
VNS-Age
CPC-Cache
CPC-Age
Servername
Sid
Path
GeoIP-Country-Code
X-Edge-POP
X-Vtex-Remote-Cache
X-Air-Pt
VNS-Cache
X-Render-Time
X-Cs
X-Oss-Storage-Class
X-Oss-Hash-Crc64ecma
Resin-Trace
X-Oss-Server-Time
X-Oss-Object-Type
X-Oss-Request-Id
X-TH-Server
X-VCT
X-Fastly-Country-Code
Cross-Origin-Opener-Policy-Report-Only
X-ATG-Version
Traceparent
X-Moov-Xdn-Version
X-Moov-T
X-CLOUD-TRACE-CONTEXT
CDN
Fastly-Drupal-Html
X-MSEdge-Features
X-MSEdge-Flight
X-Contensis-Viewer-Groups
LB
X-Varnish-Authentication
X-Cache-ASPX
X-Cdn-Request-ID
Esi-Enabled
X-Scheme
X-Viewer-Country
X-TX-ID
X-Accel-Version
YJS-ID
X-Pod-Name
M-TraceId
X-ApacheServer
Timeexpire
X-PERF
X-Upstream-Ht
X-Varnish-Beresp-TTL
X-Akamai-Pragma-Client-IP
X-Upstream-Ct
X-CF-Lambda-Version
X-Cdn-Cache-Status
X-Cache-Type
X-Datadome
X-RateLimit-Reset
X-PAYTM-SRV-ID
Powered-By
X-RateLimit-Remaining-Second
CountryCode
Rip
X-CF-Lambda-Fn
X-Datacenter
X-FPC
X-Udemy-Cache-App-Namespace
X-RateLimit-Limit-Second
X-NAPM-TraceId
FSS-Cache
X-Github-Request-Id
X-SERVER-NAME
X-Lb-Id
X-WA
HIT
X-Service-Response-Time
Sm-Log-Id
X-Geo
XServer
X-Srcache-Store-Status
True-Client-Country-4JS
V-Age
X-Wikidot-Backend
X-Clientip
Tracecode
X-Srcache-Fetch-Status
RNT-Time
X-NC
N-Cache
X-CACHE-KEY
Server-Id
Ohc-File-Size
RNT-Machine
X-Wikidot-Static-Cache
Proxy-Connection
ENV
XM
X-LiteSpeed-Cache-Control
X-VG-WebCache
X-CDN-Cache-Status
X-ServedByHost
X-Tenant
X-TraceId
X-Hyper-Cache
X-Orig-Expires
X-Shop-Environment
X-Forwarded-Path
X-Bl-Debug
Epwk-X-Cache
X-MP-GENERATED-AT
Geoip-Latitude
X-B3-Trace-ID
X-Ha-Backend
Ngx
WZWS-RAY
X-Cdn-Forward
Yjs-Id
X-B3-Parentspanid
X-M-Log
X-M-Reqid
Content-Style-Type
X-Dw-Trace-Id
X-Fastly-Backend-Reqs
X-App-Name
Inserted-Into-Cache-At
User-Agent
X-Amz-Meta-Opti
X-B3-ParentSpanId
X-Cdn-Diag
X-Qnm-Cache
X-MiniProfiler-Ids
X-Policy
X-Rebelmouse-Cache-Control
X-Rebelmouse-Surrogate-Control
X-Serial
X-Swift-Error
Ec-Rule-Version
Content-Script-Type
X-Via-PopV
X-Vgn-Hpd-Reason
X-Via-PopH
X-Via-PopN
X-Lb-Nocache
X-TT-LOGID
X-Lsadc-Cache
X-Wp-Cf-Super-Cache-Cache-Control
X-Wp-Cf-Super-Cache
X-F-Status
X-Stale
X-Mid-Debug-Cache-Disk
Expiry
Lb
X-Ramcache
Pramga
X-Connection-Hash
Req-ID
X-Mid-Debug-Cache-Key
X-UP
MIME-Version
My-App
X-LiteSpeed-Tag
X-Th-Server
Cneonction
Warning
X-Snapshot-Date
X-Cache-Ngx
X-IPS-Cached-Response
X-Request-URL