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