Threat Level: green Handler on Duty: Jim Clausing

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