Threat Level: green Handler on Duty: Yee Ching Tok

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