Threat Level: green Handler on Duty: Russ McRee

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
Last-Modified
CF-RAY
Cf-Request-Id
CF-Cache-Status
Accept-Ranges
Link
ETag
Pragma
Expect-CT
X-Powered-By
X-XSS-Protection
Via
Age
X-Cache
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
Referrer-Policy
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
Alt-Svc
P3P
X-UA-Compatible
X-Served-By
X-Xss-Protection
X-Timer
X-Download-Options
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Request-Id
Access-Control-Allow-Credentials
X-AspNet-Version
X-Adblock-Key
X-Runtime
X-Permitted-Cross-Domain-Policies
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-Check
X-Request-ID
X-Cache-Status
P3p
X-Generator
X-Cacheable
X-DNS-Prefetch-Control
Timing-Allow-Origin
X-Content-Security-Policy
X-Iinfo
Status
X-Ua-Compatible
Feature-Policy
Content-Encoding
X-AspNetMvc-Version
X-CDN
X-Envoy-Upstream-Service-Time
Access-Control-Expose-Headers
Upgrade
X-Drupal-Dynamic-Cache
Access-Control-Max-Age
X-Via
X-Dns-Prefetch-Control
Keep-Alive
X-Ws-Request-Id
X-Robots-Tag
Request-Context
Server-Timing
X-AH-Environment
X-Hacker
X-Server
X-Age
X-Turbo-Charged-By
X-Proxy-Cache
X-Server-Powered-By
X-Cache-Group
X-Backend
X-Amz-Request-Id
Host-Header
X-Amz-Id-2
EagleId
X-Nginx-Cache-Status
Report-To
X-LiteSpeed-Cache
X-Rq
X-Varnish-Cache
X-Page-Speed
Grace
X-UA-Device
X-Pingback
X-Swift-SaveTime
X-Swift-CacheTime
Ali-Swift-Global-Savetime
EagleEye-TraceId
X-Device
X-Vhost
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-OneAgent-JS-Injection
X-Amz-Version-Id
NEL
X-Dispatcher
Cf-Railgun
X-Host
X-Cache-Spec
X-CST
X-WebKit-CSP
X-Server-Id
X-Node
X-Backend-Server
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
Allow
Request-Id
Surrogate-Control
X-Readtime
Accept-CH
X-Akam-SW-Version
X-Response-Time
Accept-Ch-Lifetime
Xkey
X-HW
X-Language
X-Webkit-CSP
X-Country
X-Ruxit-JS-Agent
X-Application-Context
X-Template
X-Ac
Content-Location
X-Cache-Lookup
MS-Author-Via
X-Cloud-Trace-Context
Rating
X-Url
Edge-Control
X-PC
X-Vname
X-TtlSet
X-Mod-Pagespeed
X-Clacks-Overhead
X-Varnish-TTL
X-B3-TraceId
X-Trace
X-MS-InvokeApp
X-Content-Type
X-ESI
Fastly-Restarts
X-Rack-Cache
X-Origin-Cache
X-GitHub-Request-Id
Accept-Ch
X-Cnection
X-Buckets
X-Country-Code
X-Server-ID
X-Goog-Hash
Accept-CH-Lifetime
Verso
X-D2id
X-Cdn-Fetch
X-Kinja
X-Kinja-Revision
X-Exp-Id
X-GoogleNews-Bot
X-Exp-Variant
X-VARITI-CCR
X-Use-Magma
X-Kinja-Build
X-Kinja-Server
Arr-Disable-Session-Affinity
X-FastCGI-Cache
X-ORACLE-DMS-ECID
X-Vcap-Request-Id
Cache-Tag
X-Cached
X-Server-Name
X-Abt-Application-Version
Service-Worker-Allowed
X-Client-IP
X-Amz-Rid
X-Navigation-Version
X-Px
X-Powered-By-Plesk
RTSS
Public-Key-Pins
Access-Control-Request-Method
X-Fastly-Request-ID
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-Powered-CMS
X-Element-Page-Cache
X-MSEdge-Ref
X-Cache-TTL
X-Dw-Request-Base-Id
X-Upstream
X-NF-Request-ID
X-Version
Pagespeed
X-Sol
Display
Response
X-Middleton-Display
X-Middleton-Response
S
X-Ttl
X-TTL
X-Edge-Location-Klb
X-Kinsta-Cache
X-Edge
X-LLID
MRF-Tech
X-B3-TraceId-Primal
Mrf-Cache-Status
X-Kraken-Routeconfig-Destination
X-Kraken-Loop-Name
X-Instrumentation
X-Server-Lifecycle-Phase
X-Accel-Expires
Realpath
X-Cache-Key
X-Jurisdiction
X-HP-Webp
X-Aspnetmvc-Version
X-ECACHE
X-Correlation-Id
X-SharePointHealthScore
SPRequestGuid
X-Shield-Request-Id
X-T
SPIisLatency
X-Pinterest-Rid
SPRequestDuration
Pinterest-Generated-By
Pinterest-Version
X-MCACHE
X-Mid
X-PressLabs-Stats
X-XRDS-Location
X-DynaTrace
X-Litespeed-Cache
X-Content-Security-Policy-Report-Only
X-ORACLE-DMS-RID
Edge-Cache-Tag
X-Forwarded-Proto
Fastcgi-Cache
X-Mg-S
X-Amz-Server-Side-Encryption
X-Content-Digest
Nginx-Cache
TP-Cache
X-Recruiting
TP-L2-Cache
Charset
Filters
Front-End-Https
X-Request-Processing-Time
X-Request-Received
TCN
X-Id
Alternate-Protocol
Server-Node
X-Logged-In
X-Ezoic-Cdn
X-Forwarded-For
Content-MD5
X-Geo-Country
Cache-Tags
Fusion-Template-Id
Fusion-Content-Source
Fusion-Source
Fusion-Deployment-Id
Fusion-Component-Id
Fusion-Content-Id
X-Protected-By
X-ASPNET-VERSION
X-Hostname
X-Amzn-Trace-Id
X-Grace
X-Origin-Upstream-Status
X-Ruxit-Js-Agent
X-Goog-Generation
X-Goog-Metageneration
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-NWS-LOG-UUID
X-GUploader-UploadID
X-Goog-Storage-Class
X-Www-Served-By
X-Origin-Server
X-Amz-Replication-Status
Cleartype
X-Oneagent-Js-Injection
X-F-Cache
X-Rid
X-Debug-Info
X-HS-Hub-Id
X-Release
X-HS-Content-Id
X-HS-Cache-Config
Host
X-LB-Cache
X-HS-Combine-CSS
X-AppVersion
X-Activity-Id
X-Az
X-Contextid
Section-Io-Cache
X-RateLimit-Remaining
X-Daa-Tunnel
X-Page-Id
Server-Name
X-Erf-Bev-Bev-Is-Generated
X-Browser-Type
X-Erf-Bev-Bev
X-Git-Hash
X-Frontend
X-Ser
X-VCache
MicrosoftSharePointTeamServices
X-Ab
X-Respond-Thread
X-Cache-Age
X-Content-Options
Access-Control-Allow-Method
Accept-Charset
X-Upgrade-Enabled
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Hits
X-Mobile-URL
ServerID
X-Source
X-DIS-Request-ID
X-WebKit-CSP-Report-Only
X-CACHE-GROUP
X-B-Cache
X-Flags
X-Aspnet-Duration-Ms
X-Signature
X-Is-Crawler
X-Providence-Cookie
X-Route-Name
X-Request-Guid
X-Varnish-Backend
Payment
X-Whom
X-Cache-Action
X-Varnish-Grace
X-FB-Debug
Viewport
X-Varnish-Age
Healthy
X-TT
Paypal-Debug-Id
Node
X-Fastcgi-Cache
X-App-Environment
DynaTrace
Fastcgi-Useragent
X-B3-Sampled
X-AOL-HN
X-Load-Cache
X-Yandex-Sdch-Disable
Version
X-Seen-By
X-Mobile
DC
X-N
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Distributor
Filterid
X-HTML-Minification-Powered-By
X-Type
SRV
Frame-Options
X-User-Agent
X-Tec-Api-Version
X-Tec-Api-Origin
X-Tec-Api-Root
Retry-After
X-Cache-Control
MS-CV
X-Ua-Device
X-Jobs
X-Cache-Expired-At
Refresh
X-XRDS-LOCATION
X-Original-Request-Id
X-Response-Served-From
X-UUID
X-Adobe-Loc
X-Real-IP
X-Page-View
X-IPLB-Instance
X-Proxy-Cache-Status
NGB
X-Adobe-Content
Amp-Access-Control-Allow-Source-Origin
X-FW-Type
X-Debug-IsPreview
X-Debug-IsConnected
X-FW-Dynamic
X-Instance
X-Varnish-Server
X-Region
X-Cluster-Name
X-Device-Type
X-FW-Server
X-FW-Serve
X-FW-Static
X-FW-Hash
X-RemovedCookies
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Tumblr-User
X-Tumblr-Pixel-1
X-ProcessESI
VIX-Pulpo-Upstream-Status
X-Content-Powered-By
VIX-Pulpo-Node
X-Framework
X-B
X-G
X-Proxy
Access-Control-Request-Headers
X-Cache-Time
X-NGENIX-Cache
X-Cacheable-TTL
Ms-Operation-Id
X-CDN-Forward
X-IPS-LoggedIn
X-RTag
X-Vgn-Hpd-Reason
X-Azure-Ref
Uber-Trace-Id
X-Node-Name
X-Zen-Fury
AR-CACHE
AR-PoweredBy
AR-Request-ID
AR-ATIME
Ar-Sid
Countrycode
X-Wix-Request-Id
X-Cache-Hit
X-Microsite
X-Cache-Rule
X-Request-Handler-Origin-Region
Cache-Status
Section-Io-Origin-Time-Seconds
X-Ms-Version
X-Ms-Request-Id
Section-Origin-Responded
Section-Io-Origin-Status
Section-Io-Id
X-Is-Bot
X-Rendered-As
SD-X-WS
X-Time
Liferay-Portal
X-Aws-Lambda-Call-Status
X-Mg-Request-UUID
X-Oracle-Dms-Rid
Referer-Policy
X-HP-Trace-Id
X-Drupal-Cache-Tags
X-Debug
X-Accel-Buffering
X-App-Version
X-EdgeConnect-Cache-Status
S-Cnection
X-Parallel-Accel
Country
Cache
X-Nginx-Cache
X-RateLimit-Limit
X-L-Path
X-Revision
X-App-Server
CF-IPCountry
X-Environment-Context
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Cache-Operation
Surrogate-Key
X-FireWall-Port
Count-Hit
X-ES-SERVER
X-TNCMS
X-JoinUs
X-RN-RSRV
X-Drupal-Cache-Contexts
Eomportal-Instance
X-UPSTREAM-Address
X-GG-Cache-Date
Meta-Geo
X-Endurance-Cache-Level
X-TA-CDN-Provider
X-Loop
X-SaId
X-Cache-TTL-Remaining
X-Xfnlog-Site
X-Cache-Type
From-Origin
X-LAGOON
X-Say-Cacheable
X-ShardId
X-Sorting-Hat-ShopId
X-Shopify-Stage
X-Proxy-Build
Selected-Fe
X-Storefront-Renderer-Rendered
X-Timing-Wait
X-ShopId
X-Sorting-Hat-PodId
X-SayCDN-TTL
X-Adobe-Source
X-Alternate-Cache-Key
X-Say-TTL
Cache-Name
Country-Code
Protected
X-AWS-Id
X-Sql-Duration-Ms
Azure-Version
X-FW-Version
Azure-InstanceId
X-BYPASS-REASON
X-Be
Azure-RegionName
Azure-SlotName
Azure-SiteName
Akamai-GRN
X-VWS-Id
X-Varnish-Hostname
X-Varnishpool
X-Sql-Count
X-S-Maxage
X-No-Session
X-NYM-Debug-Backend
X-ProxyCache-Status
X-Proto
X-Origin-Date
X-Request-Time
X-Varnish-Beresp-Grace
X-LJ-Flow-ID
X-ProxyCache-Key
X-Human
X-PHP-Host
Decoy-Debug-Key
X-Hosted-By
X-R9-Blue-Green-Version
X-PHP-Backend
X-Pubstack
GEO-INFO
Apigw-Requestid
X-Handled-By
X-OCL
Cache-Tv-Group
Decoy-Debug-TTL
ServedBy
X-Labrador-Cache-Channel
X-Cache-Server
X-Status
Decoy-Debug-Status
X-PCL
X-UA-Device-Type
X-RCS-CacheZone
X-Akamai-Edgescape
Fastly-SSL
TWC-Connection-Speed
TWC-Device-Class
TWC-GeoIP-Country
X-Section
X-Via-Fastly
X-Access
X-Tumblr-Pixel-2
X-Backend-Name
X-Web-Node
X-Hl-Ver
X-Hyper-Cache
Webcakes-Region
X-Format
TWC-Privacy
TWC-Locale-Group
X-Redis-Cache
Webcakes-App-Name
X-Server-W
Webcakes-App-Version
X-Origin-Hint
TWC-GeoIP-LatLong
Property-Id
Nel
X-ApacheServer
X-Backend-Host
X-Uri
X-PERF
Mn-Server-Ip
X-FB-TRIP-ID
X-ServerID
X-Time-Microsecs
X-Cluster-Node
X-ATG-Version
X-B3-SpanId
X-Servername
X-B3-Traceid
X-Cache-PHP
OT-Force-Account-Verify
X-TEC-API-VERSION
X-APP-VERSION
X-TEC-API-ROOT
X-TEC-API-ORIGIN
Cross-Origin-Opener-Policy
X-Tumblr-Pixel-3
X-Detected-As
X-Azure-Ref-OriginShield
X-Trace-Id
Backend
Web-Mar-Node
X-Content-Age
Xserver
X-WA-Info
X-Cache-Host
X-Generation-Time
X-Varnish-Cache-Hits
X-MP-GENERATED-AT
X-TT-LOGID
X-CSRF-Token
X-Datadome
Cross-Origin-Window-Policy
X-Ua
X-Varnish-Hits
X-SRV
X-Bc-Bl
X-Rule
X-Akamai-Transformed
X-Soup
Content-Secure-Policy
X-CS
X-Cache-Enabled
X-Edge-Location
X-Via-JSL
Ec-Rule-Version
X-Cached-By
X-Ratelimit-Limit
Source
X-Mode
X-Info
X-Amz-Apigw-Id
X-Amzn-Remapped-Content-Length
X-Amzn-RequestId
X-NWS-UUID-VERIFY
S-Rt
X-Microcachable
X-Cache-Grace
X-Origin-TTL
X-Varnish-Beresp-Status
X-Origin-CC
Url
Upgrade-Insecure-Requests
X-Forwarded-Host
X-Locale
X-Magnolia-Registration
X-Dc
X-GEO
X-Cache-NGX
X-Air-Hostname
X-Air-Source
X-Air-Trace-Id
X-Storage
X-Site-Version
X-Varnish-Beresp-Ttl
X-EC-Lua
X-Tb
X-Debug-Cache
Meta-Geo-Continent
Fastcgi-X-Cache-Version
MD5-Digest
Mobile-Detection-Method
X-Shop-Environment
Host-ID
Fastly-SWR
X-SRCache-Key
M-TraceId
Odigeo-Trace-Id
Fastly-SIE
DCR-Decision-By
CDCHOST
X-Zipkin-Id
CDN-Cache
CDN-CachedAt
BehaviorPad-Version
Apple-News-Services-Request-Url
A
Apple-News-Services-Handled
Apple-News-Services-Host
Apple-News-Services-Parsed-Url
X-Vtex-Remote-Cache
CDN-EdgeStorageId
X-VG-WebCache
DCR-Processing-Time-Ms
X-Vdms-Version
Expiry
CDN-Uid
X-VG-WebServer
CDN-PullZone
CDN-RequestCountryCode
X-Vtex-Processado-Em
CDN-RequestId
X-Tenant
T-Server
X-Extlb
X-External-Request-Id
X-Forwarded-Path
X-From
X-Rojux
X-Epic-Correlation-Id
X-Developer
X-Conf
X-Routing-Service
X-Connection-Hash
X-D
X-Destination
X-Ftr-Request-Id
X-NAPM-TraceId
X-Processor
X-Platform-Server
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-Proxied
X-PBS-Appsvrname
X-Request-URI
X-NU-AKA-ACS-Version
X-Rewrite-Enabled
X-Orig-Expires
X-PAYTM-SRV-ID
X-Clientip
X-CF-Lambda-Version
X-S-Cookie
X-ScT
X-A-Ccd
X-A-Dam
X-A-Dcw
X-A
X-Ratelimit-Reset
Req-Svc-Chain
Rendered-Blocks
X-Session-Fingerprint
State
Surrogated-Key
X-A-Dgt
X-A-Wwc
X-S
X-BCube-Filmed-By
Content-Disposition
X-Cache-NE
X-CF-Lambda-Fn
X-B-Cookie
X-ARC
X-Aed
X-Aicache-OS
X-AIR-PT
X-Application
Path
X-Cache-Bucket
X-Unique-Id
User-Cache-Control
X-DataDome
SID
X-Cache-Ttl
NGX
X-Clara-WADP
X-Cache-Tags
X-Variation
X-Cache-Info
X-Cms-Context
X-TrackingId
X-Date
X-BBC-Edge-Cache-Status
X-Thanos
X-Core-Value
X-Cache-Debug
X-Bip
X-WADP-Cache
Platform
Pics-Label
PB-RID
Origin
X-VServer
X-Backend-State
X-SVT-ORM-VERSION
X-VG-TLSProxy
UCS
PB-PID
X-Envoy-Decorator-Operation
X-Sigma
X-Service
X-Men
X-Loc
X-LI-UUID
X-Platform
X-Origin-Expires
X-Proxy-Upstream
X-Request-Host
X-Request-UUID
X-Rocket-Build-Number
X-Sigma-Backend
X-Li-Pop
X-Fmm-Version
X-Forwarded-Site
X-Fastly-Cache
X-Fastly-Backend
X-SVT-ORM-RULES
X-GoCache-CacheStatus
X-Has-Esi
X-Li-Fabric
X-JWT-State
X-Is-Gdpr
X-Hash
X-DPWN-IS-SECURE
X-Accel-Expires-Debug
Is-Eu
Arc-Version
DSUID
Cache-Host
Cache-Key
Cmsid
Cmstype
L
C-Via
Fastly-Backend-Name
Fastly-Drupal-HTML
Adler-Geo
X-Ratelimit-Remaining
X-Amz-Meta-S3cmd-Attrs
AMP-Access-Control-Allow-Source-Origin
X-DefHash
X-DefElseHash
X-FC-Vary-Parameters
CPC-Age
X-Eu-Site
Cf-Device-Type
X-Device-Os
X-Csrf-Jwt
X-Esi-Check
X-Developers
X-Varnish-Remaining-TTL
X-Cluster
X-Var-Ttl
Esi-Enabled
X-Varnish-CookieHashed-On
X-Cache-Id
X-CGP
X-Branch-Name
X-Thinkindot-L3
Fastcgi-Cache-TTL
X-Varnish-CookieINHashed-On
X-Block-Status
Location
X-Generated-On
X-Served-From
X-Scheme
X-Nginx-Cache-Key
X-Mvc-Supplant-Cachable
X-Location
X-Micro-Cache
X-Old-Content-Length
X-Origin
X-RateLimit-Remaining-Second
X-Req
X-RateLimit-Limit-Second
X-Policy
X-DC
X-Level-Front-Cache
X-Irp-Debug
X-Geo-Header
X-GeoIP
X-VarnishDD-TTL
X-Generated-In
X-Gen-Mode
X-Generated-By
X-GeoIP-City
X-Gzip
X-Slack-Backend
X-SIPLIST1
X-Hnp-Log
X-HN
CacheControlHeader
X-Gamma-Serve
CPC-Cache
Sever-Int
Server-Host
Server-Ext
Gh-Request-Id
X-Viewer-Country
TDXMobile
True-Client-Country-4JS
Thinkindot-Control
Thinkindot-CacheControl-Type
Thinkindot-CacheControl
X-Wikidot-Backend
X-Wikidot-Static-Cache
IsBot
NM-Fastcgi-Cache
L5d-Success-Class
Mail-Subject
Pagetype
PFcat
Server-Info
Release
Ha-Gx-Prefs
HA-Ipaddr
Vix-Hermes-Req-Id
Server-Hostname
VNS-Cache
We-Hiring
VNS-Age
X-Via-NSCOPI
X-VC-Cache
Locid
NtCoent-Length
Webserver
X-Goog-Meta-Goog-Reserved-File-Mtime
Wxu-Next-Region
X-Fetched-On
X-Worker
AKAMAI
X-Skip-Cache
Arc-Country
X-Ckpd-Fst-Backend
Svr
X-Unique-ID
Memcached
Kp-EeAlive
X-Vdms-Path
X-Sucuri-ID
Wxu-Next-Commit
Wxu-Next-Hostname
DataCenter
X-Tx-Id
X-HS-Content-Campaign-Id
X-Auto-Login
X-Planisys-CDN-Cache
X-Qloud-Router
X-Planisys-CDN-TTL
X-Planisys-CDN-Rules
V-Age
X-Owner
X-M-Log
X-M-Reqid
X-NCache
XServer
Who
X-Mvc-Supplant-OutputCached
X-User
MIME-Version
X-Servedbyhost
X-Qnm-Cache
Cache-Hits
X-Content
X-Ua-Browser
X-Via-Poph
X-V-Cache
X-PF-Uncompressing
X-Via-Popv
X-Via-Popn
X-Platform-Cluster
X-Platform-Router
X-Rocket-Nginx-Serving-Static
X-Platform-Processor
X-NC
X-LSADC-Cache
X-Render-Time
X-Srv
X-Varnish-Url
X-Minions-Version
X-SD-PageType
X-Traceid
X-Zone
X-ZONE
X-Cache-Remote
X-ID
X-Datadog-Trace-Id
X-Vc
Environment
X-Datadog-Parent-Id
X-Datadog-Sampling-Priority
X-Wa
X-Varnish-Ttl
WebServer
X-BBC-Origin-Response-Status
X-Origin-Time
X-Refresh
X-API-Version
X-App
X-Cache-Var-Map
X-Cache-Var
Powered-By-ChinaCache
X-LB-ID
X-NodeID
My-App
X-Nyt-Route
X-Gdpr
X-PJAX-URL
X-Via-Ucdn
X-VCL-Version
X-Cache-Config
Cluster
X-Server-IP
X-Pass-Why
X-TIME
Time
X-Internal-Host
Server-ID
X-Webkit-Csp
Memory
X-CACHE-KEY
X-Newrelic-Synthetics
X-Pod-Name
X-Webkit-CSP-Report-Only
Candidate-Md5Url
X-NewRelic-App-Data
X-TX-ID
Hostname
X-CLOUD-TRACE-CONTEXT
X-LI-Proto
GeoIp-Country-Code
X-OVcl
Geoip-Latitude
Datacenter
HostName
Resin-Trace
X-OVcl-Cache
X-Tb-Optimization-Total-Bytes-Saved
Cf-Bgj
Web-Mar-Region
X-ElasticPress-Query
N-Cache
Geo-Info
X-Edge-Pop
X-Backend-TTL
X-VHOST
X-TraceId
Onion-Location
Magicmarker
Ohc-File-Size
Tcn
X-Dynatrace
X-Origin-Response-Time
X-CACHE-AGE
Servername
X-HITS
X-Akamai-Pragma-Client-IP
X-Varnish-Beresp-TTL
X-Varnish-Cacheable
WWW-Authenticate
X-EIG-Tracking-Id
X-Method
X-Dispatcher-Server
X-Geo
X-Esi
Proxy-Connection
GeoIP-Country-Code
DB-Nickname
X-NODE
X-Li-Proto
LB
X-Correlation-ID
CDN
X-AB
X-IP
X-Wix-Viewer-Type
X-Dynatrace-Js-Agent
X-MSEdge-Features
X-MSEdge-Flight
GeoIP-Latitude
X-Tt-Logid
Ssr
Cdn
X-HostName
X-Fpc
X-TIM-N
X-Cs
Redirect-Candidate
X-Fastly-Request-Id
X-Tid
Sid
Cf-Ipcountry
CF-Cached-On
X-Vcl-Version
Server-Id
X-Request-Start
X-NGINX-Cache
X-Fastly-Backend-Reqs
X-Node-Id
Tracecode
X-APP
X-Up
Pramga
X-Trv-Group
Is-Us
X-HS-Status
X-Cache-Date
X-ND-Cache
X-MG-S
Lb
X-DynaTrace-JS-Agent
X-Cdn-Origin
X-Webkit-Csp-Report-Only
X-Sn-Servicetimems
X-ServerName
X-Via-CDN
WZWS-RAY
Env
X-CSRF-TOKEN
X-Lb-Id
X-Pjax-Url
X-Reqid
Cteonnt-Length
X-WA
X-Amz-Meta-Cb-Modifiedtime
X-Nc
X-FORWARDED-FOR
URI
X-Core-Mission
W
X-Check-Cacheable
X-Provided-By
X-Via-PopV
X-Via-PopH
X-Via-PopN
X-VC
Ohc-Cache-HIT
X-UnsetCookies
X-IN-APIGATEWAY
X-IN-APIGATEWAYSSL
X-Cache-Expires
CloudFront-Viewer-Country
X-SERVER-NAME
X-Cache-Backend
X-ECache
Viewtype
VivaBuild
Shield-Pop
Server-Ttl
Rt-Fastcgi-Cache
CountryCode
X-SN
Mime-Version
X-Pf-Uncompressing
WP-Super-Cache
X-ServedByHost
X-Cache-Status-Check
X-Edge-POP
X-RAMCache
X-CCDN-CacheTTL
X-Sucuri-Cache
X-Acquia-Application-Trace
X-Cache-ASPX
X-Pad
X-Acquia-Application-UUID
CACHE
X-Acquia-Purge-Tags
X-LiteSpeed-Cache-Control
X-Contensis-Viewer-Groups
X-Hcs-Proxy-Type
X-Acquia-Site
X-Region-Sid
X-Varnish-Authentication
X-Fastly-Cache-Hits
X-CCDN-Origin-Time
X-CUA
Xc-Version
X-Moov-Xdn-Version
X-Moov-T
EpKe-Alive
X-Cdn-Request-ID
Machine
X-Action
Xet-Cookie
X-DI
X-DSS
X-Swift-Error
Vha6-Origin
X-Dw-Trace-Id
X-Webstats-RespID
X-SB
Ohc-Response-Time
X-DW
X-DB
X-StackifyID
X-RSL
X-RPS
X-Yottaa-OS
X-RPM
X-B3-Spanid
X-Cdn-Forward
X-UP
X-Ig-Push-State
User-Agent
X-FPC
ServerName
X-MiniProfiler-Ids
X-TH-Server
Content-Style-Type
Content-Script-Type
X-ElasticPress-Search
Req-ID
X-CF-Powered-By