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
X-Frame-Options
Expires
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Accept-CH
CF-Cache-Status
ETag
Expect-CT
X-XSS-Protection
Accept-Ranges
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Alt-Svc
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
X-Download-Options
X-Request-Id
X-Timer
X-Xss-Protection
Access-Control-Allow-Headers
Access-Control-Allow-Methods
CF-Ray
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
Access-Control-Allow-Credentials
X-DNS-Prefetch-Control
Content-Security-Policy-Report-Only
Accept-CH-Lifetime
X-AspNet-Version
X-Runtime
Accept-Ch
Permissions-Policy
Server-Timing
X-Drupal-Cache
X-Generator
X-Envoy-Upstream-Service-Time
X-Cache-Status
X-Cacheable
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
X-Ua-Compatible
Timing-Allow-Origin
X-CONTENT-TYPE-OPTIONS
Feature-Policy
X-Content-Security-Policy
Xkey
Upgrade
Access-Control-Expose-Headers
X-CDN
X-XSS-PROTECTION
Content-Encoding
Status
X-AspNetMvc-Version
Access-Control-Max-Age
Host-Header
X-Amz-Request-Id
X-Amz-Id-2
X-Age
Request-Context
X-Request-ID
Cf-Edge-Cache
X-Backend
X-Robots-Tag
X-Hacker
Keep-Alive
X-Via
Cf-Apo-Via
X-Amz-Version-Id
X-Turbo-Charged-By
X-Rq
X-AH-Environment
X-Vhost
X-Cache-Group
X-Server
X-Dispatcher
X-Proxy-Cache
X-Ws-Request-Id
EagleId
CONTENT-SECURITY-POLICY
X-UA-Device
X-Varnish-Cache
Pantheon-Trace-Id
Grace
X-Litespeed-Cache
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-OneAgent-JS-Injection
X-Server-Powered-By
X-Pingback
Allow
X-Page-Speed
X-WebKit-CSP
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Swift-SaveTime
X-Swift-CacheTime
X-Dns-Prefetch-Control
Ali-Swift-Global-Savetime
X-FTR-Request-ID
X-Node
X-Device
X-Cache-Lookup
X-Server-Id
EagleEye-TraceId
X-Host
X-Country-Code
X-Backend-Server
Surrogate-Control
X-Cloud-Trace-Context
X-Readtime
X-Akam-SW-Version
Cf-Railgun
X-Ruxit-JS-Agent
X-HW
X-Response-Time
Accept-Ch-Lifetime
Cache-Tag
P3p
Cf-Request-Id
X-Amz-Server-Side-Encryption
X-LiteSpeed-Cache
X-Ua-Device
Content-Location
Cross-Origin-Opener-Policy
X-Rack-Cache
X-Nginx-Upstream-Cache-Status
X-Nginx-Cache-Status
X-Trace
Service-Worker-Allowed
Request-Id
X-TraceId
X-Content-Type
X-Application-Context
Fastly-Restarts
X-Times
X-Vname
X-TtlSet
X-PC
X-Nf-Request-Id
X-Clacks-Overhead
Rating
X-Cnection
X-Edge
X-Mcache
X-Midtier
X-Browser-Type
X-ESI
X-FTR-Cache-Status
X-FTR-Backend-Server
X-FTR-Balancer
X-Country-Code-Real
X-FTR-Backend
X-Vcap-Request-Id
X-FTR-Expires
Origin-Trial
X-Cache-TTL
Edge-Control
X-FastCGI-Cache
X-Element-Page-Cache
Surrogate-Key
X-D2id
X-NWS-LOG-UUID
X-Powered-By-Plesk
X-Oneagent-Js-Injection
X-Country
X-Cdn-Fetch
X-GoogleNews-Bot
X-Kinja-Build
X-Kinja-Server
X-Exp-Id
X-Kinja
X-Exp-Variant
X-Kinja-Revision
X-Ac
X-Abt-Application-Version
X-Upstream
Verso
X-Navigation-Version
X-Mod-Pagespeed
X-B3-TraceId
X-Url
X-ORACLE-DMS-RID
X-Amz-Rid
X-Language
Pinterest-Generated-By
Pinterest-Version
X-Pinterest-Rid
Nginx-Cache
Akamai-GRN
X-GitHub-Request-Id
Pagespeed
Display
X-Middleton-Display
X-Sol
X-ECACHE
X-Envoy-Decorator-Operation
S
X-PDP-UNCACHING-HASH
X-Kraken-Loop-Name
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev-Is-Generated
X-Instrumentation
X-Erf-Bev-Bev
Response
X-Middleton-Response
X-MS-InvokeApp
AR-ATIME
AR-Request-ID
AR-PoweredBy
Edge-Cache-Tag
X-Ratelimit-Limit
X-Goog-Hash
X-Distributor
X-Resp-Is-Stale
SPRequestDuration
SPRequestGuid
X-SharePointHealthScore
SPIisLatency
X-Ser
X-Kinsta-Cache
X-Edge-Location-Klb
X-ARC
X-Ttl
X-NGENIX-Cache
Front-End-Https
X-Client-IP
Access-Control-Request-Method
X-Dw-Request-Base-Id
X-Ruxit-Js-Agent
X-Amzn-Trace-Id
X-Shield-Request-Id
X-Content-Digest
X-Ezoic-Cdn
X-Varnish-TTL
RTSS
X-Recruiting
X-Cache-Key
Cache-Status
X-T
X-Version
X-Mg-S
TP-Cache
Public-Key-Pins
X-Powered-CMS
X-Accel-Expires
X-HS-Cache-Config
Fastcgi-Cache
X-HS-Content-Id
X-MSEdge-Ref
X-HS-Hub-Id
X-Ismobilevalue
X-Daa-Tunnel
AR-CACHE
Arr-Disable-Session-Affinity
X-Cached
Cache-Tags
X-Id
X-Cluster-Name
Realpath
X-Correlation-Id
Content-MD5
X-Content-Security-Policy-Report-Only
X-Request-Received
X-Request-Processing-Time
X-Request-Device-Id
Ar-SID
X-HS-Combine-CSS
X-Forwarded-For
YJS-ID
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
X-Fastly-Request-ID
X-Newrelic-App-Data
Payment
X-Ua-Browser
X-DIS-Request-ID
X-Xrds-Location
X-HP-Webp
X-HP-Trace-Id
X-Cambria-Cache-Control
X-Jurisdiction
X-COUNTRY
X-Azure-Ref
X-GUploader-UploadID
X-HS-CF-Cache-Status
X-Amz-Replication-Status
X-RateLimit-Remaining
X-HS-Prerendered
X-Webkit-Csp
X-Meli-Trace-Site
X-Meli-Trace-Bu
X-Meli-Trace-Platform
Content-Disposition
X-Ratelimit-Remaining
X-Server-Name
Count-Hit
X-Ratelimit-Reset
X-Unique-Id
X-Px
X-Protected-By
X-Origin-Server
X-Page-Id
X-SRCache-Fetch-Status
X-SRCache-Store-Status
Cross-Origin-Resource-Policy
X-AppVersion
X-Activity-Id
X-Az
X-FB-Debug
MicrosoftSharePointTeamServices
X-Rid
X-Logged-In
X-Amz-Meta-S3cmd-Attrs
X-ORACLE-DMS-ECID
X-SERVER-NAME
Cleartype
X-Git-Hash
X-Proxy
X-Request-Handler-Origin-Region
Accept-Charset
X-VARITI-CCR
X-Www-Served-By
X-Microsite
Cross-Origin-Embedder-Policy
X-TTL
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Load-Cache
X-LLID
Version
X-Goog-Metageneration
X-Template
X-Geo-Country
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-TEC-API-ROOT
X-Forwarded-Proto
X-Varnish-Backend
X-CST
X-Hits
X-Upgrade-Enabled
X-PressLabs-Stats
Server-Node
X-B3-Sampled
Server-Name
X-Hostname
X-WebKit-CSP-Report-Only
X-App-Server
X-TT
X-Content-Options
X-Fb-Rlafr
X-B
X-Grace
Access-Control-Allow-Method
Section-Io-Cache
Viewport
Healthy
X-Varnish-Grace
X-Varnish-Server
X-Device-Type
Alternate-Protocol
X-Frontend
Fastly-SWR
Fastly-SIE
X-Status
X-B3-TraceId-Primal
Mrf-Cache-Status
MRF-Tech
X-Request-Guid
X-Goog-Storage-Class
AKAMAI-GRN
X-Goog-Stored-Content-Encoding
X-Goog-Generation
TCN
X-Goog-Stored-Content-Length
X-Contextid
Upgrade-Insecure-Requests
DC
X-Magnolia-Registration
Host
Retry-After
X-Amzn-Remapped-Content-Length
X-EdgeConnect-Cache-Status
X-Cache-Control
X-Requestid
X-CSRF-Token
MS-Author-Via
X-Cache-Age
X-App-Version
Amp-Access-Control-Allow-Source-Origin
X-Revision
Frame-Options
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Buckets
X-Origin-TTL
X-Origin-CC
X-Varnish-Ttl
X-Debug
X-Original-Request-Id
X-Response-Served-From
X-Type
X-RemovedCookies
X-ProcessESI
SD-X-WS
X-UUID
X-Hl-Ver
X-Oracle-Dms-Ecid
X-Adobe-Loc
X-Mobile
X-Akamai-Edgescape
X-Adobe-Content
X-Debug-IsConnected
X-ServerID
X-Backend-Name
X-Seen-By
X-Debug-IsPreview
X-INCAP-ABP
Access-Control-Request-Headers
VIX-Pulpo-Node
X-Instance
X-G
VIX-Pulpo-Upstream-Status
X-Tumblr-Pixel-1
X-Tumblr-Pixel-0
X-Cache-Status-Check
Cross-Origin-Embedder-Policy-Report-Only
X-Tumblr-User
X-NYM-Debug-Backend
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-AB
X-N
Cross-Origin-Opener-Policy-Report-Only
X-Tumblr-Pixel
X-Is-Bot
X-Rendered-As
Ms-Operation-Id
X-Mg-Request-UUID
MS-CV
X-Framework
X-Lambda-Id
X-Trace-Id
Section-Io-Id
NGB
X-RTag
X-WP-CF-Super-Cache
X-WP-CF-Super-Cache-Cache-Control
X-Akamai-Request-ID2
X-Content-Powered-By
X-RM-Cache-TTL
X-Storage
X-Server-W
X-Vcl-Version
Charset
Cache
X-Dc
Webserver
X-DataDome
Filterid
X-Yandex-Req-Id
X-Tec-Api-Version
X-Tec-Api-Root
X-Tec-Api-Origin
X-Cache-Time
Paypal-Debug-Id
X-ECache
X-Request-Site
Accept-Language
X-B3-SpanId
X-Request-Platform
X-Request-Bu
Refresh
X-Cache-Hit
X-VC-Cache
X-URL
SRV
Onion-Location
X-Ms-Request-Id
X-HITS
X-Ms-Version
X-Real-IP
X-Time
X-Node-Name
X-User-Agent
X-F-Cache
X-Region
YJS-CacheStatus
X-Hcs-Proxy-Type
X-CCDN-Origin-Time
X-CCDN-CacheTTL
Xet-Cookie
Liferay-Portal
CDN-RequestId
Priority
X-Fastcgi-Cache
X-HTML-Minification-Powered-By
GEO-INFO
X-Environment-Context
X-L-Path
X-IPS-LoggedIn
X-Mode
X-LB-Cache
X-Service
X-Pass-Why
Cross-Origin-Window-Policy
X-Rule
X-Datadog-Sampled
X-Datadog-Sampling-Priority
X-Rocket-Nginx-Serving-Static
X-Datadog-Trace-Id
X-Adobe-Source
X-Datadog-Parent-Id
X-Is-Modern-Browser
X-SaId
X-Is-Supported-Browser
X-Geo-Region
X-Timing-Wait
Country
Meta-Geo
Selected-Fe
X-Browser-Name
X-Drupal-Cache-Tags
X-Tb
X-JoinUs
X-Is-Mobile-Only
X-Cache-Expired-At
X-Rn-Rsrv
X-Is-Desktop
X-Rewrite-Enabled
X-Is-Mobile
X-Is-Tablet
X-Proxy-Build
Backend
X-Tcp-Rtt
X-UPSTREAM-Address
Protected
X-Origin
X-Origin-Cache
X-Handled-By
X-Wix-Request-Id
X-Httpd
X-Proxy-Cache-Info
X-Whom
OT-Force-Account-Verify
Mn-Server-Ip
X-Generation-Time
X-VC
X-ProxyCache-Key
X-ProxyCache-Status
X-Provided-By
X-Web-Node
X-BYPASS-REASON
Cache-Hits
Environment
Expiry
X-WP-CF-Super-Cache-Active
X-FB-TRIP-ID
X-Extlb
X-Detected-As
Webcakes-Region
X-Connection-Hash
Fastcgi-Useragent
X-Vcache
X-Loop
TWC-GeoIP-LatLong
TWC-GeoIP-DMA
TWC-GeoIP-Country
TWC-GeoIP-Region
TWC-Locale-Group
Url
Uber-Trace-Id
TWC-Privacy
TWC-GeoIP-City
TWC-Device-Class
Web-Mar-Node
Webcakes-App-Name
Webcakes-App-Version
X-Origin-Hint
X-Cacheable-TTL
TWC-Connection-Speed
Property-Id
X-Cloudmap
X-Origin-Date
X-RateLimit-Limit-Second
X-Varnish-Beresp-Grace
X-Routing-Service
X-RateLimit-Remaining-Second
X-RCS-CacheZone
X-Zipkin-Id
X-Servername
X-VCT
X-Proxied
X-S
X-Tncms
ServerID
X-Skip-Cache
X-Locale
X-Soup
X-Fetched-On
X-Tumblr-Pixel-3
X-Cdn-Origin
ServedBy
X-Format
X-Forwarded-Host
X-Shopify-Stage
X-Auth-Group-Type
X-App-Environment
X-Storefront-Renderer-Rendered
X-Alternate-Cache-Key
X-Hosted-By
X-Redis-Cache
X-Cache-Action
X-Logging-Id
Atl-Traceid
X-Tumblr-Pixel-2
LB
X-Hit
X-MP-GENERATED-AT
X-Cms-Context
X-Director
DB-Nickname
X-Cluster
X-Edge-Location
X-SayCDN-TTL
X-Say-TTL
X-Endurance-Cache-Level
X-FW-Hash
X-FW-Static
X-FW-Serve
X-Served-From
X-Urbn-Site-Id
X-Scope-Id
X-Say-Cacheable
X-FW-Server
X-Debug-Info
Locale
X-Cache-Host
X-Cluster-Node
X-FW-Type
X-FW-Version
X-Restarts
X-Urbn-Context-Path
X-FW-Dynamic
X-PHP-Host
X-Drupal-Cache-Contexts
X-Labrador-Cache-Channel
X-Cache-Debug
Filters
X-Server-ID
X-IPLB-Instance
Apigw-Requestid
X-IPLB-Request-ID
X-Platform
X-NewRelic-App-Data
X-XRDS-Location
X-R9-Blue-Green-Version
X-Mly-Id
Node
X-Api-Version
X-CDN-Cache-Status
Front
AR-SID
X-GEO
X-CDN-Forward
X-No-Session
X-CLOUD-TRACE-CONTEXT
Xserver
X-Tt-Logid
X-UA
X-Varnish-Age
WPO-Cache-Status
X-Optimistic-Header
X-Varnish-Cache-Hits
X-ShopId
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-ShardId
Countrycode
X-Lagoon
Cache-Tv-Group
X-Varnish-Beresp-Ttl
X-WP-CF-Super-Cache-Cookies-Bypass
X-Presslabs-Stats
X-Fastly-Request-Id
X-SRV
X-Wormhole-Sdk
X-Generated-By
X-B3-Traceid
X-Signature
X-B-Cache
X-NWS-UUID-VERIFY
Referer-Policy
X-CACHE-AGE
X-Client-Ip
X-Webstats-RespID
X-Site-Version
X-Azure-Ref-OriginShield
From-Origin
X-Ua
Request-ID
X-PHP-Backend
X-IsAdmin
X-Cache-Rule
X-Cache-Operation
Cache-Provider
X-Accel-Version
AMP-Access-Control-Allow-Source-Origin
Location
X-NF-Request-ID
X-Worker
X-VWS-Id
X-AWS-Id
X-Auto-Login
X-LJ-Flow-ID
X-TA-CDN-Provider
X-VC-TTL
X-Upstream-Ct
X-Tx-Id
X-Upstream-Ht
X-Ec-GeoHdr
X-A-Wwc
Xc-Version
X-Vdms-Version
Candidate-Md5Url
X-Ec-Fail
X-A-Ccd
Source
X-Destination
DCR-Decision-By
X-Developer
Meta-Geo-Continent
X-Varnish-Hostname
X-Tb-Optimization-Total-Bytes-Saved
Origin
X-Org
Pragrma
WPO-Cache-Message
X-Vtex-Remote-Cache
X-Loc
X-A
X-Bl-Debug
X-A-Dam
X-Ig-Push-State
Redirect-Candidate
X-A-Dcw
DCR-Processing-Time-Ms
X-A-Dgt
X-Bc-Bl
Rendered-Blocks
X-BCube-Filmed-By
X-Ig-Origin-Region
X-External-Request-Id
X-PERF
X-S-Cookie
X-ApacheServer
N-Cache
Host-ID
X-Rojux
X-SRCache-Key
X-ScT
X-Content-Age
X-GeoCode
MD5-Digest
X-GeoCountry
Lang
Origin-Agent-Cluster
Sslversion
S-Rt
X-D
X-Application
X-Aed
X-Conf
Expect-Staple
Ngx.Var.Host
Fl-Custom-Application
X-Cache-NE
X-B-Cookie
X-Clientip
X-Litespeed-Cache-Control
X-Xfnlog-Site
CDN-EdgeStorageId
Canary
Apple-News-Services-Host
X-Fmm-Version
Apple-News-Services-Parsed-Url
X-Eu-Site
Origin-Site
X-Gamma-Serve
Apple-News-Services-Request-Url
X-FC-Vary-Parameters
X-From
X-Forwarded-Site
CDN-Cache
CDN-CachedAt
X-Ee-Origin
X-Csrf-Jwt
Gh-Request-Id
X-CUA
Gannett-Cam-Experience-Id
X-Cms-Device
Fastly-SSL
Ha-Gx-Prefs
X-Core-Value
X-Contensis-Viewer-Groups
Mail-Subject
Log-Origin
L5d-Success-Class
IsBot
Odigeo-Trace-Id
X-Depends
CDN-RequestPullSuccess
CDN-Uid
CDN-RequestPullCode
CDN-RequestCountryCode
CDN-PullZone
X-Ee-Request-Id
Cdncip
Cdnsip
X-Ee-Generated-By
X-CGP
Cluster
Apple-News-Services-Handled
X-Ee-Request-Date
X-Epic-Correlation-Id
Powered-By
X-Access
X-Varnish-Director
X-Varnish-Beresp-Status
X-PAYTM-SRV-ID
X-Policy
X-Section
ServerName
X-Origin-Expires
X-VG-TLSProxy
X-Vary-Devices
Sid
X-Cache-Aspx
X-Varnish-Authentication
X-V-Cache
Store-Cloud-Cache
X-SD-PageType
X-Req
X-Save-Cache
X-Rocket-Build-Number
X-AK-Request-ID
X-Aicache-OS
RNT-Time
RNT-Machine
X-Sucuri-Cache
X-Action
Time-Cloud-Cache
X-Slack-Shared-Secret-Outcome
X-VG-WebCache
Wxu-Next-Hostname
Wxu-Next-Region
Wxu-Next-Commit
X-Hash
X-Bug-Bounty
X-GoCache-CacheStatus
X-ND-Cache
X-Server-IP
X-GeoIP-City
X-GeoIP-Country-Code
X-GeoIP-Region-Code
X-Sigma-Backend
CF-IPCountry
X-Slack-Backend
X-Micro-Cache
X-Men
X-Mvc-Supplant-Cachable
We-Hiring
X-Node-Id
Web-Mar-Region
X-Sigma
X-Old-Content-Length
X-SIPLIST1
X-HS-Content-Campaign-Id
X-Internal-TTL
X-NGINX-Cache
X-Reqid
X-Parent-Response-Time
X-BBC-Edge-Cache-Status
X-Bip
X-Block-Status
X-Cache-Date
X-Backend-Instance
X-AB-Test
X-App-Name
X-Akamai-Device-Characteristics
X-Accel-Expires-Debug
X-Amz-Storage-Class
X-Ion-Hop
X-Thinkindot-L3
X-Thinkindot-L1
X-UA-Device-Type
X-Up
X-Uri
X-Thanos
X-SVT-ORM-VERSION
X-SB
X-Request-URI
X-Shield-Cache-Expires
X-Sn-Servicetimems
X-SVT-ORM-RULES
X-Varnish-CookieHashed-On
X-Varnish-CookieINHashed-On
X-Wikidot-Static-Cache
X-Wikidot-Backend
Country-Code
X-CacheTTL
X-Fastly-Backend
X-We-Are-Hiring
X-Vmg-Version
X-Varnish-Remaining-TTL
X-VarnishDD-TTL
X-Via-Fastly
X-Viewer-Country
X-Render-Time
X-Region-Sid
X-Gdpr
X-Frame-Option
X-Gen-Mode
X-Generated-On
X-HN
X-Ec-Custom-Error
X-Dispatcher-Server
X-Debug-Cache-Fetch
X-Date
X-Debug-Cache-Store
X-DefElseHash
X-DefHash
X-Hnp-Log
X-Human
X-Origin-Time
X-Op-Id-All
X-Path
X-Proto
X-Pubstack
X-Nyt-Route
X-NMSegId
X-Ion-Healthy
X-Jungle-Id
X-Level-Front-Cache
X-Mvc-Supplant-OutputCached
X-Content-Length
X-Acquia-Purge-Cdn-Unconfigured
Pics-Label
PFcat
Origin-EX
Cache-Contol
Azure-Version
Azure-SlotName
Azure-RegionName
Req-Svc-Chain
Azure-SiteName
DSUID
CDCHOST
Origin-CC
Cmstype
Content-Script-Type
Fastly-Backend-Name
Content-Style-Type
Cmsid
L
Nord-Request-ID
NM-Fastcgi-Cache
Machine
Azure-InstanceId
Release
Thinkindot-CacheControl
TDXMobile
Thinkindot-CacheControl-Type
X-Air-Pt
RewriteTeamHook
User-Cache-Control
X-Cs
Server-Host
RewriteTestHook
X-FORWARDED-FOR
Vix-Hermes-Req-Id
V-Age
X-LSADC-Cache
X-Proxied-Request
Click-Count-Error
X-Edge-Server
Click-Count-Action-Start
X-DPWN-IS-SECURE
Cdn-Host
C-Via
X-Vercel-Cache
X-Vercel-Id
X-Gzip
X-Location
X-Esi-Check
X-Moov-Xdn-Caching-Status
Cdn-Request-Time
X-ElasticPress-Query
X-Moov-T
X-Moov-Xdn-Version
CacheControlHeader
Producers
Platform
Tube-Got-Results
X-Cache-FS-Status
Tube-Get-Contents
Fastly-GeoIP-CountryCode
X-B3-Trace-ID
X-Cache-Id
Tube-Got-Eval
Tube-Return
CloudFront-Viewer-Country
X-Source
XM
X-Origin-Response-Time
Mime-Version
Fastly-Drupal-HTML
X-Sucuri-ID
X-ZONE
X-Pad
NGX
X-Cached-By
Debug
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Load-Balancing
Cookie
X-Varnish-Hits
X-APP
X-Datadome
X-Via-Poph
X-Debug-Service
X-Via-Popn
X-Via-Popv
GeoIp-Country-Code
GeoIP-Latitude
X-Servedbyhost
X-Nginx-Cache-Key
True-Client-Country-4JS
Server-ID
X-Nananana
Server-Ext
X-TH-Server
Sever-Int
X-HA-Backend
X-Srv
X-DynaTrace-JS-Agent
Server-Hostname
HA-Ipaddr
X-AIR-PT
Product
X-Webkit-CSP
X-TT-LOGID
X-Litespeed-Tag
Show-Do-Not-Sell-Link
X-Amz-Meta-Cb-Modifiedtime
Cdn
Traceparent
X-Cdn-Forward
X-GeoIP
X-Wa
X-Cache-VC
X-Nc
WZWS-RAY
X-Fpc
X-Zone
X-Cache-Backend
X-Ez-Minify-Html
X-Newrelic-Synthetics
X-User
HostName
X-LB-ID
DataCenter
Edge-Cache
X-B3-Parentspanid
X-Unity-Cache
Fastly-Drupal-Html
SID
Tcn
MIME-Version
X-B3-Spanid
X-Lsadc-Cache
X-VCL-Version
Resin-Trace
X-CDN-Provider
Akamai-Mon-Iucid-Del
X-Request-Start
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X-AC
Lb
X-Nginx-Cache
X-Vc
Yjs-Id
Wsr-Cache
X-Proxy-Cache-La3
Serverhost
Xkey-La3
XkeyR9
Xkeylog
A
X-Proxy-CacheR9
X-Service-Response-Time
X-Scheme
Sm-Log-Id
X-TX-ID
X-HOST
X-LiteSpeed-Tag
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X-Datacenter
Cs
Surrogated-Key
X-LiteSpeed-Cache-Control
Hostname
X-CS
X-Request-Host
X-Lb-Id
X-RateLimit-Limit
NtCoent-Length
X-Pool
X-FPC
Uri
X-NodeID
X-WA
X-HubSpot-Correlation-Id
Datacenter
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Cdn-Requestid
CDN
Esi-Enabled
X-Akamai-Pragma-Client-IP
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X-Cache-Grace
X-Udemy-Cache-App-Namespace
X-Fastly-Backend-Reqs
X-ID
X-Vgn-Hpd-Reason
X-NC
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X-Air-Trace-Id
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X-DataCenter
Yak-Timeinfo
X-TIM-N
Content-Secure-Policy
X-Stale
X-Styx-Origin-Id
X-Via-JSL
X-DynaTrace
X-HA-Application-Name
Pramga
X-HA-Bot-Classification
Proxy-Firewall
Cr
X-HA-Device-Type
X-Styx-Info
Server-Id
X-Html-Minification-Powered-By
X-CSRF-TOKEN
N1-Cache
X-Var-Ttl
X-Via-CDN
X-Via-SSL
Edge-Copy-Time
X-Via-Edge
X-Srcache-Store-Status
RATING
X-TimeS
GeoIP-Country-Code
X-Srcache-Fetch-Status
X-Ez-Minify-Js
ServerHost
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T-Server
From-Cache
X-Zen-Fury
X-Swift-Error
X-Lb-Nocache
X-Ha-Backend
X-Jobs
W
Srv
X-ServedByHost
Req-ID
X-Varnish-Beresp-TTL
X-Geolocation
X-Wp-Cf-Super-Cache-Cache-Control
X-Wp-Cf-Super-Cache
X-Oracle-DMS-ECID
X-MSEdge-Features
X-Via-PopN
X-App
WP-Super-Cache
True-Client-IP
X-Via-PopH
X-MSEdge-Flight
X-Via-PopV
X-CACHE-KEY
Cloudfront-Viewer-Country
X-Shardid
X-Wp-Cf-Super-Cache-Active
X-Wp-Cf-Super-Cache-Cookies-Bypass
X-Sorting-Hat-Podid
X-LAGOON
X-Shopid
X-Sorting-Hat-Shopid
X-Cdn-Srv
Ohc-File-Size
X-Key
X-Ramcache
FSS-Cache
X-ByteArk-Cache
On-Server
Ohc-Cache-HIT
X-Proxy-Cache-LA2
X-ByteArk-ReqID
X-Correlation-ID
X-VServer
X-Ssense-Gql
X-Ssense-Shipping-Surcharge-Enabled
X-Check-Cacheable
Ngx
X-Elasticpress-Query
X-Sucuri-Id
CF-Cached-On
Cl-Cache
X-Cdn-Cache-Status
X-Webkit-Csp-Report-Only
X-Geo
X-Powered-By-VTEX-Cache
X-VTEX-Cache-Server
X-Web-Server
X-VTEX-Cache-Time
X-PageType
X-Fastly-Cache
X-Serial
WebServer
X-DC
X-ATG-Version
Akamai-X-True-TTL
X-Th-Server
Cf-Ipcountry
X-Iplb-Instance
X-Iplb-Request-Id
FSS-Proxy
Cneonction
Warning
My-App
X-MiniProfiler-Ids
X-Limited
X-Beacon
X-WA-Info
Xkey-G-Jp
Host-Name
X-Env
X-Fastly-Cache-Status
Coldstone-Viewer-Currency
User-Agent
X-Request-Url
Coldstone-Viewer-Country
Coldstone-Viewer-Country-Region-Name
X-Mg-Cache