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