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