Threat Level: green Handler on Duty: Xavier Mertens

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