Threat Level: green Handler on Duty: Daniel Wesemann

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
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
CF-RAY
Accept-Ranges
Expect-CT
X-XSS-Protection
Pragma
X-Powered-By
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Alt-Svc
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Xss-Protection
P3P
X-Cache-Hits
X-UA-Compatible
X-Served-By
X-Download-Options
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Request-Id
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
Access-Control-Allow-Credentials
Accept-CH
X-AspNet-Version
Content-Security-Policy-Report-Only
X-Runtime
Accept-CH-Lifetime
X-DNS-Prefetch-Control
X-Drupal-Cache
X-Check
X-Cache-Status
X-Ua-Compatible
X-Generator
Server-Timing
X-Request-ID
X-Cacheable
X-Envoy-Upstream-Service-Time
Timing-Allow-Origin
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
X-Content-Security-Policy
Access-Control-Expose-Headers
Feature-Policy
X-CDN
Content-Encoding
Status
X-AspNetMvc-Version
Upgrade
CF-Ray
Access-Control-Max-Age
X-Amz-Request-Id
X-Via
X-Amz-Id-2
Cf-Edge-Cache
Host-Header
EagleId
Keep-Alive
Request-Context
X-Backend
X-Cache-Group
X-UA-Device
X-AH-Environment
X-Robots-Tag
X-Server
X-Hacker
X-Turbo-Charged-By
X-Proxy-Cache
X-Ws-Request-Id
Xkey
Permissions-Policy
X-Rq
X-Age
X-Vhost
X-Amz-Version-Id
X-Dns-Prefetch-Control
Allow
X-Dispatcher
Cf-Apo-Via
X-Swift-CacheTime
X-Swift-SaveTime
X-Server-Powered-By
Grace
Ali-Swift-Global-Savetime
X-Varnish-Cache
X-LiteSpeed-Cache
X-Page-Speed
X-Pingback
X-Cache-Lookup
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-OneAgent-JS-Injection
X-Device
Cf-Railgun
X-Backend-Server
EagleEye-TraceId
X-Host
X-Server-Id
X-WebKit-CSP
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Response-Time
X-Readtime
X-Akam-SW-Version
Surrogate-Control
X-HW
Request-Id
X-Cloud-Trace-Context
X-Ruxit-JS-Agent
Content-Location
X-Application-Context
P3p
X-Nginx-Cache-Status
X-Node
X-Nginx-Upstream-Cache-Status
X-NWS-LOG-UUID
X-CST
X-Litespeed-Cache
X-Country
Service-Worker-Allowed
X-Country-Code
X-Content-Type
X-Clacks-Overhead
Cache-Tag
X-Trace
X-Url
Rating
X-Rack-Cache
X-Amz-Server-Side-Encryption
Nginx-Cache
X-Times
X-FTR-Request-ID
X-PC
X-TtlSet
X-Vname
X-Daa-Tunnel
X-Oneagent-Js-Injection
X-Server-Name
X-Webkit-Csp
Cross-Origin-Opener-Policy
X-Mcache
X-Edge
X-Midtier
X-Browser-Type
X-Powered-By-Plesk
X-Cnection
X-ESI
X-Upstream
X-GitHub-Request-Id
X-ECACHE
Edge-Control
X-D2id
X-MS-InvokeApp
X-Element-Page-Cache
X-Ac
Verso
X-Kinja
X-Kinja-Build
X-Kinja-Server
X-GoogleNews-Bot
X-Kinja-Revision
X-Exp-Variant
X-Exp-Id
X-Cdn-Fetch
AR-PoweredBy
AR-Request-ID
AR-SID
AR-ATIME
Accept-Ch-Lifetime
X-FastCGI-Cache
X-Ser
X-Vcap-Request-Id
X-Cache-TTL
X-Abt-Application-Version
X-Navigation-Version
X-B3-TraceId
X-Aws-Lambda-Call-Status
AR-CACHE
X-Mod-Pagespeed
X-Dw-Request-Base-Id
SPRequestDuration
SPIisLatency
X-NF-Request-ID
SPRequestGuid
X-SharePointHealthScore
X-Amz-Rid
Fastly-Restarts
X-Erf-Bev-Bev
X-Erf-Bev-Bev-Is-Generated
X-Instrumentation
X-Server-Lifecycle-Phase
X-Kraken-Loop-Name
X-Sol
X-Middleton-Display
Display
Pagespeed
X-Ruxit-Js-Agent
X-Client-IP
X-Mg-S
Edge-Cache-Tag
X-Kinsta-Cache
X-Edge-Location-Klb
S
X-Powered-CMS
X-Middleton-Response
Response
Cache-Status
X-Amzn-Trace-Id
X-Goog-Hash
Access-Control-Request-Method
X-Version
X-VARITI-CCR
X-Fastly-Request-ID
X-Cache-Key
X-ARC
X-RateLimit-Remaining
RTSS
X-Content-Digest
X-TraceId
Cross-Origin-Resource-Policy
X-Forwarded-For
X-Recruiting
X-T
X-Ratelimit-Limit
Realpath
X-Varnish-TTL
X-Correlation-Id
X-MSEdge-Ref
Front-End-Https
Fastcgi-Cache
MS-Author-Via
Pinterest-Generated-By
Pinterest-Version
X-Pinterest-Rid
X-Cached
X-PDP-UNCACHING-HASH
Content-MD5
X-HS-Hub-Id
X-HS-Content-Id
X-HS-Cache-Config
X-Ua-Browser
X-FTR-Backend
X-FTR-Cache-Status
X-FTR-Balancer
X-Country-Code-Real
X-Protected-By
X-FTR-Backend-Server
Server-Node
Public-Key-Pins
X-Shield-Request-Id
Payment
X-Request-Processing-Time
X-Request-Received
X-Forwarded-Proto
X-Ratelimit-Remaining
X-TTL
X-LLID
TP-Cache
Arr-Disable-Session-Affinity
X-Frontend
X-HS-Combine-CSS
MicrosoftSharePointTeamServices
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Ttl
X-Distributor
X-Jurisdiction
X-HP-Webp
X-FTR-Expires
X-Server-ID
X-HP-Trace-Id
X-Accel-Expires
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
Count-Hit
X-NODE
X-GUploader-UploadID
X-ORACLE-DMS-RID
X-Origin-Server
X-LB-Cache
X-Origin-Cache-Key
X-Ezoic-Cdn
X-Request-Handler-Origin-Region
X-Microsite
X-Content-Security-Policy-Report-Only
X-Az
X-Activity-Id
X-AppVersion
Host
Mrf-Cache-Status
X-Ua-Device
X-TEC-API-VERSION
X-TEC-API-ROOT
MRF-Tech
X-TEC-API-ORIGIN
X-PressLabs-Stats
X-B3-TraceId-Primal
X-Www-Served-By
X-Cluster-Name
X-Varnish-Backend
X-Varnish-Server
X-App-Server
Retry-After
Cache-Tags
X-Hits
Accept-Charset
X-Amz-Meta-S3cmd-Attrs
Server-Name
Cleartype
X-Geo-Country
X-Hostname
X-Newrelic-App-Data
X-NGENIX-Cache
X-Envoy-Decorator-Operation
X-Goog-Metageneration
Referer-Policy
X-CSRF-Token
X-DIS-Request-ID
X-Upgrade-Enabled
TP-L2-Cache
X-ORACLE-DMS-ECID
X-Seen-By
X-Id
X-Git-Hash
Access-Control-Allow-Method
X-Azure-Ref
TCN
X-CCDN-Origin-Time
X-Unique-Id
X-CCDN-CacheTTL
X-Hcs-Proxy-Type
X-Tt-Trace-Host
X-Load-Cache
X-Tt-Trace-Tag
X-F-Cache
X-Proxy
X-Amz-Apigw-Id
Filterid
X-Amzn-RequestId
X-Revision
X-Grace
Section-Io-Cache
X-Px
Healthy
X-Request-Guid
X-Cache-Control
X-Trace-Id
X-B
X-Debug-Info
Paypal-Debug-Id
X-TT
DC
X-B3-Sampled
X-Oracle-Dms-Ecid
X-Page-Id
X-Contextid
X-Type
X-Fb-Rlafr
X-FB-Debug
X-Logged-In
X-Mobile
X-N
X-RateLimit-Limit
X-Debug
Viewport
X-WP-CF-Super-Cache-Cache-Control
X-WP-CF-Super-Cache
X-XRDS-LOCATION
X-Varnish-Ttl
X-Whom
X-Oracle-Dms-Rid
X-Template
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Goog-Storage-Class
Fastly-SWR
Fastly-SIE
X-Goog-Stored-Content-Length
Charset
X-Datadog-Sampling-Priority
X-Datadog-Parent-Id
X-Datadog-Trace-Id
X-Webkit-CSP
X-Content-Options
Version
X-Via-JSL
X-Cache-Grace
X-Language
Content-Disposition
X-Magnolia-Registration
X-Wix-Request-Id
X-Time
X-App-Environment
X-Varnish-Grace
X-EdgeConnect-Cache-Status
X-B-Cache
X-Origin-Cache
X-Signature
X-Node-Name
X-RemovedCookies
X-ProcessESI
SRV
X-B3-SpanId
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
X-Debug-IsPreview
X-Debug-IsConnected
X-Datadog-Sampled
X-RateLimit-Reset
X-Yottaa-Metrics
X-Tumblr-Pixel
X-Rid
X-Tumblr-Pixel-0
X-Tumblr-Pixel-1
X-Tumblr-User
X-Rule
X-Yottaa-Optimizations
Ms-Operation-Id
MS-CV
X-G
X-Hl-Ver
SD-X-WS
X-RTag
X-Amzn-Remapped-Content-Length
X-UUID
X-Amz-Replication-Status
GEO-INFO
ServerID
X-FW-Dynamic
X-FW-Static
X-FW-Version
X-Instance
X-Storage
X-FW-Server
X-FW-Serve
X-Adobe-Loc
X-Backend-Name
X-FW-Hash
X-Adobe-Content
X-FW-Type
X-Proxy-Cache-Info
X-Rendered-As
Liferay-Portal
NGB
X-Device-Type
X-NYM-Debug-Backend
X-Cacheable-TTL
X-Is-Bot
X-Environment-Context
X-IPS-LoggedIn
X-User-Agent
Country
X-Cache-Hit
X-Region
X-Status
X-L-Path
Countrycode
X-NWS-UUID-VERIFY
X-Real-IP
X-Source
X-ServerID
Surrogate-Key
X-Cache-Age
Akamai-GRN
X-Sucuri-Cache
X-Sucuri-ID
Cross-Origin-Window-Policy
X-WP-CF-Super-Cache-Active
OT-Force-Account-Verify
X-Servername
Amp-Access-Control-Allow-Source-Origin
X-UA
X-VC-Cache
From-Origin
X-WebKit-CSP-Report-Only
X-RM-Cache-TTL
Upgrade-Insecure-Requests
Front
Backend
X-Framework
X-INCAP-ABP
X-Air-Pt
X-Mode
X-Xrds-Location
Refresh
X-AB
X-URL
X-Wormhole-Sdk
X-Cache-Time
X-Air-Trace-Id
X-Air-Hostname
X-Air-Source
X-Content-Powered-By
X-Akamai-Request-ID2
X-Handled-By
Frame-Options
X-DataDome
Xet-Cookie
X-HTML-Minification-Powered-By
X-Edge-Location
X-Buckets
X-Endurance-Cache-Level
X-Nginx-Cache
Url
X-JoinUs
X-CDN-Forward
X-SaId
X-Timing-Wait
X-Proxy-Build
X-Rewrite-Enabled
X-UPSTREAM-Address
X-Origin-TTL
Meta-Geo
Filters
X-Origin-CC
X-Xfnlog-Site
X-Rn-Rsrv
Selected-Fe
X-Webstats-RespID
X-RCS-CacheZone
TWC-Device-Class
TWC-Connection-Speed
X-Served-From
TWC-Privacy
Webcakes-Region
X-Akamai-Edgescape
Webcakes-App-Version
Webcakes-App-Name
TWC-GeoIP-LatLong
TWC-Locale-Group
TWC-GeoIP-Country
Property-Id
Cache
X-Git-Commit
X-Cache-Rule
X-Cache-Operation
WPO-Cache-Message
WPO-Cache-Status
Atl-Traceid
X-Drupal-Cache-Tags
X-Azure-Ref-OriginShield
X-AWS-Id
X-Labrador-Cache-Channel
X-Cluster
X-Container-Uri
ServedBy
X-SRV
X-No-Session
Webserver
X-VWS-Id
X-Reqid
X-Origin-Date
X-Origin-Hint
X-Tumblr-Pixel-2
X-Provided-By
X-PHP-Host
Access-Control-Request-Headers
X-Logging-Id
X-Origin
X-Vcache
X-LJ-Flow-ID
X-Proxied
Accept-Language
TDXMobile
X-Generation-Time
Thinkindot-CacheControl
X-Restarts
X-IPLB-Instance
X-Scope-Id
Thinkindot-CacheControl-Type
Cache-Hits
X-Adobe-Source
X-Fetched-On
Section-Io-Id
X-Cloudmap
X-R9-Blue-Green-Version
X-Cache-Debug
Mn-Server-Ip
X-VCT
X-Cms-Context
X-Drupal-Cache-Contexts
X-Extlb
X-Site-Version
X-Varnish-Cache-Hits
X-CMSURLCustom
X-Routing-Service
X-Hosted-By
X-Redis-Cache
X-Tb
Thinkindot-Control
X-IPLB-Request-ID
X-Web-Node
X-Accel-Version
X-Shield-Cache-Expires
X-Locale
X-Zipkin-Id
Web-Mar-Node
X-Thinkindot-L3
X-VC
X-Is-Supported-Browser
X-Director
X-Is-Desktop
X-Soup
X-Is-Mobile
X-Say-TTL
X-BYPASS-REASON
X-ProxyCache-Key
X-Loop
X-ProxyCache-Status
X-Tncms
X-Is-Tablet
X-Upstream-Ct
X-Say-Cacheable
X-Upstream-Ht
X-Ms-Version
X-SayCDN-TTL
X-Lambda-Id
X-Tcp-Rtt
X-Skip-Cache
X-Browser-Name
X-Httpd
X-Varnish-Age
X-Geo-Region
X-Forwarded-Host
X-Format
X-Frame-Option
X-S
Apigw-Requestid
X-Ms-Request-Id
X-Alternate-Cache-Key
X-GeoCode
Xserver
X-ShardId
X-Sorting-Hat-PodId
X-Cache-Status-Check
X-RID
X-Sorting-Hat-ShopId
X-GeoCountry
X-Varnish-Beresp-Grace
X-Cdn-Origin
X-Cache-Host
X-Detected-As
X-Shopify-Stage
X-ShopId
X-Storefront-Renderer-Rendered
X-Generated-By
X-Optimistic-Header
X-Worker
X-Lagoon
X-Rocket-Nginx-Serving-Static
X-Vercel-Id
X-Vercel-Cache
X-XRDS-Location
Azure-SiteName
Azure-SlotName
Azure-RegionName
Azure-InstanceId
LB
Azure-Version
X-B3-Traceid
Source
Node
X-Request-URI
X-TA-CDN-Provider
X-WP-CF-Super-Cache-Cookies-Bypass
X-Ratelimit-Reset
Fastcgi-Useragent
CDN-Cache
Protected
X-Pass-Why
CDN-EdgeStorageId
CDN-CachedAt
CDN-RequestPullSuccess
CDN-Uid
CDN-PullZone
CDN-RequestPullCode
CDN-RequestCountryCode
X-Erf-Stays-Pdp-Viaduct-Migration-Web-V2
X-Vcl-Version
Cross-Origin-Embedder-Policy
X-Connection-Hash
Expiry
X-App-Version
X-GEO
X-Tumblr-Pixel-3
X-Tec-Api-Origin
X-Tec-Api-Root
X-Tec-Api-Version
CDN-RequestId
Onion-Location
Alternate-Protocol
X-Cache-Expired-At
X-Cache-Server
AMP-Access-Control-Allow-Source-Origin
DB-Nickname
X-Api-Version
X-PHP-Backend
X-Jobs
Priority
Environment
X-Server-W
X-Fastly-Request-Id
CF-IPCountry
Uber-Trace-Id
X-ID
X-Proxy-Cache-Status
X-Fastcgi-Cache
X-Cache-Action
Sid
X-Cluster-Node
Locale
User-Cache-Control
X-Urbn-Site-Id
X-Urbn-Context-Path
X-DC
X-LSADC-Cache
X-MP-GENERATED-AT
X-Tx-Id
Cdn-Requestid
X-Original-Request-Id
X-Tt-Logid
HostName
X-Response-Served-From
X-Mg-Request-UUID
X-Uri
X-Client-Ip
X-Ig-Origin-Region
X-FB-TRIP-ID
Content-Secure-Policy
DCR-Decision-By
X-Epic-Correlation-Id
X-Jungle-Id
Candidate-Md5Url
X-Esi-Check
X-Forwarded-Site
X-Gzip
X-GeoIP-City
A
X-A-Dgt
DCR-Processing-Time-Ms
Cache-Tv-Group
X-Generated-On
X-Gen-Mode
X-Hnp-Log
X-Content-Age
X-BCube-Filmed-By
X-Bc-Bl
Server-Host
Sslversion
X-Bip
Req-ID
X-Cache-Id
X-Block-Status
X-Bl-Debug
Rendered-Blocks
Surrogated-Key
T-Server
X-A
X-A-Ccd
X-A-Dam
X-A-Dcw
Wxu-Next-Region
Wxu-Next-Hostname
X-Aed
Vix-Hermes-Req-Id
X-A-Wwc
Wxu-Next-Commit
Origin-Agent-Cluster
Origin
Fusion-Source
Fusion-Template-Id
Gannett-Cam-Experience-Id
X-Dispatcher-Server
Fusion-Deployment-Id
Fusion-Content-Source
X-Ec-GeoHdr
X-Ec-Fail
Fusion-Component-Id
Fusion-Content-Id
X-Device-Os
X-Developer
X-Conf
X-Clientip
Ngx.Var.Host
X-Cache-NE
Meta-Geo-Continent
MD5-Digest
X-D
Lang
Magicmarker
Edge-Cache
X-Level-Front-Cache
X-Thanos
X-SRCache-Key
X-Varnish-Hostname
X-Org
X-ScT
X-Op-Id-All
X-Vtex-Remote-Cache
X-Request-Start
X-UA-Device-Type
X-TIM-N
X-Powered-By-VTEX-Cache
X-VTEX-Cache-Time
X-VTEX-Cache-Server
X-SB
X-Origin-Expires
X-Vdms-Version
X-Vdms-Path
X-Rojux
X-ND-Cache
X-Viewer-Country
X-Node-Id
X-NCache
X-TT-LOGID
X-Varnish-Beresp-Ttl
X-Origin-Response-Time
X-Test
X-Ismobilevalue
X-Request-Time
X-Amz-Storage-Class
X-Core-Value
Fastly-Backend-Name
Host-ID
X-App-Name
X-SD-PageType
Fastly-SSL
X-Auth-Group-Type
X-Auto-Login
X-Debug-Cache-Fetch
X-Scheme
X-Debug-Cache-Store
X-CUA
X-Var-Ttl
Server-Hostname
Powered-By
X-Cache-Bucket
PFcat
X-VarnishDD-TTL
X-Varnishpool
X-Via-Fastly
X-VG-WebCache
Server-Ext
Release
X-Cache-Info
Origin-EX
X-Cdn-Srv
NM-Fastcgi-Cache
X-LiteSpeed-Cache-Control
X-V-Cache
X-Cache-TTL-Remaining
Sever-Int
Origin-CC
X-Varnish-Director
X-Backend-Instance
Ssr
X-Req
X-Nginx-Cache-Key
X-GeoIP
X-Policy
X-GeoIP-Country-Code
X-Geo-Header
AKAMAI
X-Proto
C-Via
DSUID
X-Gdpr
X-GeoIP-Region-Code
X-NMSegId
X-Service
X-Nyt-Route
X-Zone
X-HS-Content-Campaign-Id
X-HN
X-Origin-Time
X-Platform
XM
X-ECache
X-PAYTM-SRV-ID
Cache-Provider
X-Ig-Push-State
Content-Script-Type
X-RateLimit-Remaining-Second
X-WA-Info
X-Loc
X-Region-Sid
Content-Style-Type
X-Edge-Server
X-AK-Request-ID
WP-Super-Cache
Yak-Timeinfo
X-Fastly-Cache
Cdn-Host
CDCHOST
X-Pubstack
X-Fmm-Version
Cdn-Request-Time
Cdncip
X-Mvc-Supplant-Cachable
X-RateLimit-Limit-Second
Cdnsip
X-FC-Vary-Parameters
Odigeo-Trace-Id
X-Tb-Optimization-Total-Bytes-Saved
X-Access
X-ApacheServer
X-Aicache-OS
X-BBC-Edge-Cache-Status
X-We-Are-Hiring
X-B3-Trace-ID
X-Wikidot-Backend
X-Acquia-Purge-Cdn-Unconfigured
X-Wikidot-Static-Cache
X-Section
X-From
X-Pool
X-Proxied-Request
X-Fastly-Backend
X-Render-Time
X-Eu-Site
X-GoCache-CacheStatus
X-PERF
X-Location
X-Men
X-Mly-Id
X-Mvc-Supplant-OutputCached
X-Human
X-Request-Host
X-Ec-Custom-Error
X-CGP
X-Contensis-Viewer-Groups
X-Varnish-Authentication
X-Varnish-Beresp-Status
X-Cache-Aspx
X-Cache-Backend
X-Csrf-Jwt
X-SVT-ORM-VERSION
X-Server-IP
X-Micro-Cache
X-DPWN-IS-SECURE
X-Sn-Servicetimems
X-SVT-ORM-RULES
X-VG-TLSProxy
X-Ad-Load-Variation
Fastly-GeoIP-CountryCode
Gh-Request-Id
Producers
Redirect-Candidate
Req-Svc-Chain
Mail-Subject
RNT-Time
RNT-Machine
Pramga
Platform
L
L5d-Success-Class
Machine
Web-Mar-Region
Is-Eu
Ha-Gx-Prefs
HA-Ipaddr
On-Server
Country-Code
Esi-Enabled
Apple-News-Services-Host
True-Client-Country-4JS
Apple-News-Services-Request-Url
Apple-News-Services-Handled
V-Age
We-Hiring
W
Adler-Geo
Tube-Return
Apple-News-Services-Parsed-Url
Click-Count-Action-Start
Click-Count-Error
Cluster
Tube-Got-Results
Tube-Get-Contents
Tube-Got-Eval
Cache-Key
Canary
X-Newrelic-Synthetics
X-AIR-PT
X-Slack-Backend
X-Date
X-Hash
X-Up
X-Custom-Header
X-CacheTTL
X-NodeID
Proxy-Firewall
X-Accel-Expires-Debug
X-NGINX-Cache
NGX
X-Slack-Shared-Secret-Outcome
X-LB-ID
X-COUNTRY
Debug
X-Dc
X-Varnish-Hits
SID
X-CACHE-GROUP
X-DefHash
X-Cs
X-Varnish-CookieINHashed-On
X-Varnish-CookieHashed-On
Fastly-Drupal-HTML
X-DefElseHash
X-Varnish-Remaining-TTL
X-Nananana
Datacenter
X-Nf-Request-Id
Mime-Version
X-Pad
X-HA-Backend
X-Refresh
Pics-Label
X-Via-Popn
X-Via-Poph
CloudFront-Viewer-Country
X-Depends
X-Via-Popv
Locid
X-CACHE-AGE
X-Amz-Meta-Cb-Modifiedtime
X-Servedbyhost
X-VHOST
X-TIME
X-Akamai-Transformed
X-Platform-Cluster
X-Platform-Router
X-Platform-Processor
X-M-Reqid
X-M-Log
X-VC-TTL
X-Cache-FS-Status
GeoIP-Latitude
X-Datadome
X-Parent-Response-Time
X-LiteSpeed-Tag
Ngx-Var-Key
X-HITS
X-Old-Content-Length
X-Cached-By
X-LB-NoCache
X-B3-Parentspanid
X-CS
X-Litespeed-Tag
Resin-Trace
Server-ID
X-CDN-Cache-Status
X-Moov-T
X-TH-Server
Server-Info
X-Moov-Xdn-Version
Fastly-Drupal-Html
Cf-Ipcountry
Cdn
X-DynaTrace-JS-Agent
GeoIp-Country-Code
BehaviorPad-Version
X-Wa
X-Nc
Cross-Origin-Embedder-Policy-Report-Only
X-Presslabs-Stats
X-VCache
NtCoent-Length
X-Vgn-Hpd-Reason
X-APP
Cf-Device-Type
X-External-Request-Id
X-Application
X-S-Cookie
X-Fpc
X-Destination
X-User
X-NewRelic-App-Data
X-Vc
X-IAuth-Set-Uid
X-ZONE
X-B-Cookie
FSS-Cache
X-Content-Length
True-Client-IP
Uri
X-Zen-Fury
X-Esi
CDN
X-HostName
X-TX-ID
Serverhost
X-Sigma
X-Cache-Date
True-Client-Ip
X-Sigma-Backend
X-Srv
X-Varnish-Beresp-TTL
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X-Dynatrace-Js-Agent
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X-VServer
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Load-Balancing
Tcn
X-Flags
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X-Aspnet-Duration-Ms
X-Is-Crawler
X-Oracle-DMS-ECID
X-DynaTrace
X-Segment-20210421
S-Rt
GeoIP-Country-Code
X-Branch-Name
X-Dispatcher-Number
X-HOST
Srv
Vc-Max-Age
Hostname
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X-Dispatch
X-RequestId
X-WA
X-FPC
X-NC
X-Cdn-Cache-Status
X-Cdn-Forward
Ohc-File-Size
X-CACHE-KEY
X-Page-View
Product
X-DataCenter
X-APP-VERSION
X-B3-Spanid
X-Webkit-Csp-Report-Only
Geoip-Latitude
Server-Id
X-FL-QIT-DEBUG
Type
Srvid
X-Geo
X-Lb-Nocache
X-Ckpd-Fst-Backend
ServerName
X-SERVER-NAME
X-Http-Reason
X-Sql-Count
X-Sql-Duration-Ms
X-Irp-Debug
Cl-Cache
X-ServedByHost
DataCenter
X-Bug-Bounty
X-VCL-Version
X-Via-SSL
Ohc-Cache-HIT
X-Via-CDN
CacheControlHeader
X-SIPLIST1
IsBot
Edge-Copy-Time
X-Via-Edge
Epwk-X-Cache
Cloudfront-Viewer-Country
Origin-Trial
X-Owner
WZWS-RAY
X-Cache-Ttl
X-App
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XkeyRZ
X-Proxy-CacheRZ
X-Ua
X-Correlation-ID
MIME-Version
Cross-Origin-Opener-Policy-Report-Only
X-Via-PopH
X-Via-PopN
X-Via-PopV
X-Ha-Backend
X-Core-Mission
X-Srcache-Store-Status
X-Srcache-Fetch-Status
Rtss
X-MiniProfiler-Ids
N-Cache
X-Qloud-Router
X-Hit
X-CSRF-TOKEN
ServerHost
X-MSEdge-Flight
X-Lb-Id
X-MSEdge-Features
Lb
X-Service-Response-Time
X-Sqd-Ctime
X-Amz-Meta-Opti
Sm-Log-Id
Warning
X-Datacenter
X-Fastly-Country-Code
X-Web-Server
CountryCode
X-Sqd-Stime
Cneonction
X-Acquia-Site
X-Vmg-Version
X-Acquia-Application-Trace
X-Acquia-Application-UUID
X-Limited
X-Acquia-Purge-Tags
X-Akamai-Device-Characteristics
User-Agent
X-Nf-Language
X-Litespeed-Cache-Control
X-HubSpot-Correlation-Id
X-LAGOON
Servername
X-Nf-Country
X-Nf-Ats-Version
Cmstype
X-Info
Cmsid
X-IN-APIGATEWAY
X-IN-APIGATEWAYSSL
X-Gamma-Serve
X-Dw-Trace-Id
X-Snapshot-Date
X-RAMCache
X-Proxy-Cache-La3
X-Akamai-Pragma-Client-IP
X-Requestid
Xkeylog
Xkey-La3
X-Check-Cacheable
X-Serial
X-Amz-Meta-S3b-Last-Modified
X-Amz-Meta-Sha256
Ngx
X-Ramcache
X-Th-Server
X-Udemy-Cache-App-Namespace