Threat Level: green Handler on Duty: Didier Stevens

SANS ISC: HTTP Header Usage Statistics - SANS Internet Storm Center 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
Date
Content-Type
Set-Cookie
Server
Connection
Cache-Control
Vary
X-Powered-By
Expires
Content-Length
Link
Last-Modified
Pragma
Accept-Ranges
ETag
X-Content-Type-Options
X-Frame-Options
Strict-Transport-Security
CF-RAY
X-XSS-Protection
Age
X-Cache
Expect-CT
Content-Language
P3P
X-AspNet-Version
X-Pingback
Via
X-UA-Compatible
Upgrade
X-Xss-Protection
Access-Control-Allow-Origin
Content-Security-Policy
X-Cacheable
X-Request-Id
X-Adblock-Key
Referrer-Policy
X-Varnish
X-Check
X-Generator
X-Language
X-Template
X-Buckets
X-Type
X-Cache-Group
X-Pass-Why
X-Drupal-Cache
WPE-Backend
X-Permitted-Cross-Domain-Policies
X-Wix-Server-Artifact-Id
X-Accel-Buffering
X-Download-Options
Alt-Svc
X-Ac
X-Hacker
Host-Header
X-Cache-Hits
X-Sorting-Hat-Section
X-Dc
X-Alternate-Cache-Key
X-AspNetMvc-Version
X-ShopId
X-Sorting-Hat-ShopId-Cached
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId-Cached
X-Sorting-Hat-PrivacyLevel
X-ShardId
X-Sorting-Hat-FeatureSet
X-Sorting-Hat-PodId
P3p
X-Via
X-Runtime
X-Powered-By-Plesk
X-Served-By
X-Contextid
X-PC-Key
X-PC-Hit
X-UA-Device
X-ServedBy
X-Amz-Cf-Id
X-PC-AppVer
X-PC-Date
X-PC-Host
MS-Author-Via
Content-Location
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Powered-CMS
X-IPLB-Instance
X-Timer
X-Seen-By
X-Wix-Request-Id
X-Rid
Status
X-Tumblr-User
X-Tumblr-Pixel-0
X-Tumblr-Pixel
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-Tumblr-Pixel-1
CF-Cache-Status
Cartoon
X-Tumblr-Pixel-2
X-Iinfo
Access-Control-Allow-Credentials
X-Backend
X-WPE-Loopback-Upstream-Addr
X-Cache-Status
X-CST
X-Ua-Compatible
X-Host
Powered-By
X-Endurance-Cache-Level
Content-Encoding
X-NewRelic-App-Data
X-FRAME-OPTIONS
X-Mod-Pagespeed
X-Cache-Hit
X-Cache-Enabled
X-Port
X-CDN
X-Tumblr-Pixel-3
X-Newrelic-App-Data
X-Logged-In
Keep-Alive
X-Server-Powered-By
X-DIS-Request-ID
X-Drupal-Dynamic-Cache
X-Nginx-Cache-Status
X-Server
X-Robots-Tag
X-Accel-Version
X-Proxy-Cache
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-Turbo-Charged-By
X-Page-Speed
X-Request-ID
X-Content-Powered-By
X-Content-Digest
X-GitHub-Request-Id
X-LiteSpeed-Cache
Content-Security-Policy-Report-Only
X-Tumblr-Pixel-4
X-Rack-Cache
X-AH-Environment
X-FW-Hash
X-FW-Server
X-Pad
X-ASPNET-VERSION
X-FW-Type
X-FW-Serve
X-FW-Static
Request-Context
X-Varnish-Cache
Edge-Control
X-Hits
X-Webcom-Cache-Status
X-XRDS-Location
X-Trace
X-Request-Country
X-BC-Stapler
X-Node
SPRequestGuid
X-SharePointHealthScore
X-MS-InvokeApp
Access-Control-Expose-Headers
Edge-Cache-Tag
X-HS-Cache-Config
MicrosoftSharePointTeamServices
X-HS-Content-Id
Cf-Railgun
WP-Super-Cache
X-HS-Combine-CSS
X-SERVER
X-CF-Powered-By
X-Amz-Request-Id
X-Amz-Id-2
Timing-Allow-Origin
Charset
X-FullPageCaching
X-Died
X-Content-Security-Policy
X-PHP-Backend
X-Cache-Lookup
X-INKT-URI
X-INKT-SITE
X-Fastly-Request-ID
X-PhApp
X-Webserver
X-Cnection
Request-Id
Access-Control-Max-Age
X-Backend-Server
Server-Timing
SPIisLatency
SPRequestDuration
X-Edge-Cache-Key
X-Edge-Cache
CONTENT-SECURITY-POLICY
MicrosoftOfficeWebServer
EagleId
X-Swift-CacheTime
X-Swift-SaveTime
Composed-By
Rating
X-CDN-Pop-IP
X-CDN-Pop
Grace
X-SS-Location
X-Tumblr-Pixel-5
X-SS-Conf
X-Server-Name
X-Safe-Firewall
X-DDC-Arch-Trace
X-NF-Request-ID
X-Tumblr-Content-Rating
X-Spip-Cache
X-Device
Served-By
Liferay-Portal
X-Dw-Request-Base-Id
X-Hyper-Cache
X-Cloud-Trace-Context
X-VCache
Ali-Swift-Global-Savetime
X-Do-Not-Hack
Permitted-Cross-Domain-Policies
X-HeyJason
Front-End-Https
X-Original-Date
P-WS
P-LB
Surrogate-Control
X-Microcache
X-Servedby
X-LiteSpeed-Cache-Control
X-Loop
X-TNCMS
X-Firenze-Processing-Times
X-StackifyID
X-Wix-Punisher
X-Acc-Exp
X-Cluster-Node
X-Clacks-Overhead
Display
X-RateLimit-Limit
X-RateLimit-Remaining
X-Sol
X-Middleton-Display
Response
Content-Style-Type
X-Middleton-Response
X-RateLimit-Reset
X-FB-Debug
X-OneAgent-JS-Injection
X-Jimdo-Wid
X-Jimdo-Instance
Content-Script-Type
X-Kinsta-Cache
Public-Key-Pins
X-DNS-Prefetch-Control
X-Shopid
X-Sorting-Hat-Podid
X-Shardid
X-Sorting-Hat-Podid-Cached
X-Sorting-Hat-Shopid
X-Debug-Info
X-Sorting-Hat-Featureset
X-Sorting-Hat-Privacylevel
X-Sorting-Hat-Shopid-Cached
X-Amz-Version-Id
X-Age
X-HOST
Refresh
X-Goog-Hash
X-Tumblr-Pixel-6
X-XN-XNHTML
X-XN-Trace-Token
X-Vtex-Processado-Em
X-Magento-Tags
PageSpeed
X-N-OperationId
X-Cached
Fpc-Cache-Id
X-Zen-Fury
X-Hostname
X-User-Agent
X-Px
X-DynaTrace-JS-Agent
X-Ruxit-JS-Agent
X-WebKit-CSP
X-Cache-Config
Wpe-Backend
X-Url
Retry-After
X-LW-Cache
X-Version
Xkey
Feature-Policy
X-Generated-By
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-Goog-Metageneration
X-Handled-By
X-Frame-Option
X-Upstream
X-Topify-Platform
X-Edge-Location
Access-Control-Request-Method
TCN
X-FORWARDED-FOR
X-Loopia-Node
X-Source
Allow
X-MiniProfiler-Ids
Rt-Fastcgi-Cache
X-Request-Time
X-CMS-Version
X-Whom
Fastcgi-Cache
X-ET-API-VERSION
X-ET-API-ROOT
X-ET-API-ORIGIN
Product
X-B-Cache
X-Cached-By
X-EdgeConnect-Origin-MEX-Latency
X-Content-Options
ServedBy
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Fastcgi-Cache
X-Outils-CS
Warning
X-URLSCHEME
X-Guploader-Uploadid
Last-Published
X-Platform-Router
X-RESOURCE
X-EdgeConnect-MidMile-RTT
X-Platform-Cluster
X-Platform-Processor
X-Tec-Api-Root
X-Tec-Api-Version
X-Tec-Api-Origin
X-Accel-Expires
X-AspNetWebPages-Version
X-Varnish-Host
X-From
Public-Key-Pins-Report-Only
Fhost
X-Magento-Cache-Debug
X-Cache-Key
X-Engine
X-Developer
Powered
X-Cache-Info
X-Application-Context
X-Location-Id
X-Varnish-Count
Dmn
X-Signature
X-Varnish-HitMiss
X-Platform-Server
Generator
X-LBLID
X-NWS-LOG-UUID
X-Original-Request
X-Passed-To-DLL
X-Returned-From-DLL
X-Returned-From
X-Varnish-Cache-Hits
X-Passed-To
X-DynaTrace
X-Umbraco-Version
X-Actual-URL
X-Varnish-Beresp-Grace
X-Varnish-Beresp-Status
X-Varnish-Beresp-Ttl
Cache-Key
X-Micro-Cache
X-UD-Method
X-Stale
X-Defender
X-HS-Content-Campaign-Id
X-Response-Time
X-Device-Type
X-Shop-Id
X-S
X-F-Cache
No
X-ApacheServer
X-PERF
X-Vtex-Remote-Cache
X-Vtex-Processed-At
X-Powered-By-VTEX-Janus-ApiCache
X-CacheServer
X-VTEX-Cache-Status-Janus-ApiCache
X-VTEX-Janus-Router-Backend-App
X-URL
X-Microcachable
Imagetoolbar
X-Returned-From-PostProcessResponse
X-Passed-To-PostProcessResponse
X-Returned-From-BeforeDispatch
X-Passed-To-BeforeDispatch
X-Hosted-By
X-Platform
Origin
X-Ezoic-Cdn
Host
Cache-Provider
Surrogate-Key
Alternate-Protocol
X-Gateway-Skip-Cache
X-Gateway-Cache-Status
X-Gateway-Cache-Key
Arr-Disable-Session-Affinity
X-Msg-2-Log
X-Dns-Prefetch-Control
X-ARC
X-Recruiting
Version
X-Forwarded-For
X-SSLProxy
X-Sapient
X-SSLUpstream
X-Instart-Request-ID
X-Rnd
X-Via-JSL
X-Cache-Namespace
X-Cache-Rule
Akamai-IP
X-Lambda-Id
X-Translation
Node
X-Microcache-Status
DynaTrace
MIME-Version
X-Supported-By
SSPAppContext
X-I-Sp
X-BS
X-SO
X-App-Status
X-SVR-IIS
X-Platform-Cache
X-Svr-Proxy
Pagespeed
X-Cache-TTL
Content-Hash
X-Art-Request-Id
X-Cache-Age
X-Akam-SW-Version
X-Powered-By-360WZB
X-Dealeron-Backend
X-Dealeron-Original-Url
X-DealerOn
X-Correlation-Id
X-Duration
WZWS-RAY
X-Magento-Cache-Control
X-Director
S-Cnection
X-TransIP-Balancer
X-Acquia-Application-UUID
USPLoggingUUID
Pool
RTSS
X-Environment
X-Powered-By-VelaWeb
Edge-Control-Message
X-Matrix-Proxy
X-Matrix-Server
X-TransIP-Backend
X-Cache-Tags
X-Edge-IP
X-Hypernode
X-SSL-Cipher
X-Server-Upstream
X-Track
X-NetCat-Version
Content-Disposition
X-SSL-Protocol
X-Expires-Orig
X-Rocket-Nginx-Bypass
X-LB-Node
SN
X-Server-Id
X-ServerName
X-App-Hosting
X-CSRF-Protection
Accept-Encoding
X-Cache-Control-Orig
X-Storage
X-Generated
X-Cache-Debug
X-Powered-By-VTEX-Janus-Edge
X-Daa-Tunnel
X-Abgroup
X-Page-Cache
X-Server-ID
X-Drupal-Cache-Tags
X-Hiawatha-Cache
X-Debug
X-Last-Modified
X-Dispatcher
X-Varnish-Cacheable
X-Grace
X-SV-Pid
X-SV-Cacheable
X-SV-CacheTags
X-SV-Duration
X-SV-Expires
X-SV-FromDBCache
X-SV-Edge
X-SV-Nginx-Duration
SiteSpeed
X-SV-CreatedAt
X-NoCache
X-Front
X-VARITI-CCR
Wsr-Cache
Contao-Page-Layout
X-Cache-Handler
X-ORACLE-DMS-ECID
X-Cache-Lifetime
Req-Id
FAI-W-FLOW
X-Vcap-Request-Id
X-Gamma-Serve
Powered-By-ChinaCache
Update-Time
X-Varnish-RemainingTTL
X-Varnish-Seen-By
X-Varnish-RemainingLife
X-Varnish-ObjectSource
X-Rocket-Nginx-Serving-Static
X-Varnish-GracePeriod
X-Client-IP
Src-Update
Content-Encoding-Handler
X-Ttl
X-GUploader-UploadID
X-Flow-Powered
X-Sucuri-ID
ServerID
X-CJ-Soft
X-WebServer
X-Geo-Country
X-Cache-Engine
X-Now-Id
X-Env
X-I
X-Amz-Meta-S3cmd-Attrs
X-Firenze-Processing-Time
X-Drupal-Cache-Contexts
X-Litespeed-Cache-Control
X-Forwarded-Proto
X-Revision
X-Discourse-Route
X-SRV
X-SmugMug-Values
X-SmugMug-Hiring
Smug-CDN
X-TTFB
Lsrequestid
X-Cache-Server
Cache
X-Content-Type-Option
X-TTFB-L
X-Sucuri-Cache
X-Route-Server
X-Correlation-ID
X-Varnish-TTL
X-Locale
X-Time
X-GeoIP-Country-Code
X-Cache-Level
X-ATG-Version
X-TransIP-Reserved
X-LB-Server
X-Content-Encoded-By
X-Country-Code
X-SDS
X-Varnish-IP
X-Cache-Operation
X-IsCacheURL
X-Trace-Id
X-Pressidium-NinukisWP-Ver
X-Cache-Expires
Strikingly-Cached-Version
X-Always-Cache
Strikingly-Cached
X-Unbounce-VisitorID
Cache-Tags
Backend
X-Unbounce-Variant
ServerName
X-Unbounce-PageId
If-Modified-Since
X-Vhost
X-Litespeed-Cache
Strikingly-Cache-Region
X-Server-Instance
X-Varnish-Age
W
X-Esi
X-Transaction
X-Twitter-Response-Tags
X-Connection-Hash
X-Dispatch
Cneonction
X-Varnish-Url
Author
Service-Worker-Allowed
X-Middleware-Start
X-Cache-Only-Varnish
X-Varnish-Backend
X-N
X-FIRSTBase
X-GeoIP-Country-Name
X-Cache-Type
Pv
X-Akamai-Device-Characteristics
S
X-BackendServer
X-Service-Id
Section-Io-Id
X-Akamai-Device-Model
SEOMOZ
Https
X-Speed-Cache-Key
X-Amz-Rid
X-Speed-Cache
MJ12bot
X-Acquia-Application-Trace
X-PwB-Node
Use-Proxy
X-Url-Base
X-Cookie-Domain
X-TTL
X-Magnolia-Registration
X-LB
X-Dynamic-Cache
Server-Name
Fw-Via
AMF-Ver
Location
X-Storage-Cache-Expires
X-Storage-Cache
X-Cache-Fix
Custom-Header
X-FTR-Request-ID
X-Real-Server
X-Varnish-Server
X-Config-Blacklist-Version
X-Cache-Device-Type
X-Cache-PageType
X-Storage-Cache-Date
X-Webkit-CSP
X-Xrds-Location
X-High-Performance
X-CF-Passed-Proto
X-Amz-Storage-Class
X-Yadis-Location
X-Content-Age
X-HW
X-Amz-Meta-Content-Md5
X-Varnish-Retries
X-Cache-Control
PICS-Label
X-ID
NetMindSessionID
X-Wikidot-Backend
X-Wikidot-Static-Cache
X-Pantheon-Site
Qs-Cache
X-Origin
X-Varnish-Ttl
X-ORACLE-DMS-RID
Content-MD5
X-Pantheon-Phpreq
Ohc-File-Size
X-ServerID
X-CacheFROM
Surrogate-Key-Raw
X-Processing-Time
X-Pantheon-Environment
X-Key
X-CDN-Forward
MC
X-Pool
Xc-Version
X-Symfony-Cache
X-Content-Security-Policy-Report-Only
X-Worker
Page-Completion-Status
Srv
X-Srv
X-UPSTREAM
NnCoection
FindLaw
From-Origin
Nodo
X-Empowered-By
X-Browser
Tracecode
X-Vip
X-SRCache-Key
Prama
X-Now-Cache
X-Frontend
X-Nginx-Cache
X-Nitro-Cache
Access-Control-Allow-Method
X-Varnish-Hits
X-Id
Hummingbird-Cache
X-Shield-Request-Id
Local-Info
Pics-Label
Proxy-Connection
IM-Version
X-NginX-Cache
Content-Transfer-Encoding
X-Orig-Vary
Ram
X-TB-M
X-Runtime-Memory
X-VC-Enabled
X-Distributor
X-BKSrc
Noq
X-SP-UniqueName
X-SP-Farm
X-Nbs
Dtk-Cache-Check-0
SRV
X-Ratelimit-Remaining
X-Runtime-Rack
X-Rq
X-RequestId
Ramp
X-Location
HAVer
X-Ratelimit-Limit
HCVer
X-Shard
X-Varnish-ID
X-WPL-DATA
X-Stage
Drupal-Pagecache-Memcache
X-Cache-Miss-From
X-FW
IBM-Web2-Location
CacheControlHeader
Swift-Performance
X-Sys-Req-ID
X-Sedo-Request-Id
RequestId
X-Cache-CFC
X-JSESSIONID
X-Akamai-Edgescape
A-Powered-By
X-4ormat-Cacheable
X-Redman-Final-Url
X-AVG-Country-Code
X-AF-Userserver
X-Analytics
X-Real-IP
X-Avg-Cookie-Expires
X-RealServer
X-Unique-ID
X-Resource
Adm-Server
Cached
Edit
X-NginX-Server
Front
X-Redman-Backend
X-Cache-2
Cm-Server
X-Proxy
X-CB-Server
X-ClientSide-Caching
X-App-Runtime
Accept-Language
X-GoCache-CacheStatus
Accept-Charset
X-Runtime-Affili
X-Yottaa-Optimizations
X-Span
X-Proxy-Backend
Content_type
Web-App-Origin-Name
X-Yottaa-Metrics
Backend-Timing
X-Atraveo-Param-Rm
X-Atraveo-Varnish-Server-Id
X-Atraveo-TTL
X-Atraveo-Set-Cookie
X-Atraveo-From-Varnish-Cache
X-Atraveo-Zone
X-Path-Route
X-FireWall-Port
X-PF-Uncompressing
X-Atraveo-Expires
X-Request-Uri
X-PRAM
X-Hrouter
X-Hstore
X-Generated-Timestamp
X-Force
X-Remote-Addr
X-Pagename
X-Culture
Identity
X-Varnish-Hostname
X-App
X-Appmachine-Environment
X-A
X-App-Server
X-SE-Debug
Frame-Options
X-Backend-Status
X-Atraveo-ETag
X-Fedora-School-Id
X-CLOUD-TRACE-CONTEXT
X-Vcache
X-Dw-Trace-Id
X-Rule
X-Hit-Cache
X-Source-ID
X-Atraveo-Cache-Control
X-ServerIndex
X-CAPServer
X-LP
XDomainRequestAllowed
X-Agent
Lookup-Cache-Hit
X-IIJ-Cache
Proxy-Agent
X-Role
X-Distil-CS
X-Purge-Host
X-Purge-URL
X-JG-Page-Cache
X-Debug-Token
X-Varnish-Debug-TTL
X-CacheDebug
Beyond-Iis
Cteonnt-Length
X-GeoIP
X-HydroSheep
X-Session-ID
Environment
X-Pantheon-Az
X-Ratelimit-Reset
Request-EU
X-Varnish-Debug-Age
Request-Country
X-NWS-UUID-VERIFY
X-ESI
X-Plat
X-AOL-HN
X-VCS-Ttl
Server-Info
AsisCache
X-VCS-Cacheable
X-Smartcache-Timeout
X-Cacheable-TTL
Firespring-Website-Id
X-Frames-Options
X-Cache-Ttl
X-Smartcache-Keys
X-LW-Web-Server
SHInfo
X-WP
WWW-Authenticate
Lb
X-Webstats-RespID
X-Provisioner-Version
X-Processed-By
X-E
X-Detected-Device
CS-SERVER
Upgrade-Insecure-Requests
X-Domain-Checked
X-Nginx-Host
WP-FROM-CACHE
X-VC-TTL
X-WR-MODIFICATION
X-V
Nginx-Cache
X-Map-Context
CLMOB
X-Jphone-Copyright
Accept-CH
Eomportal-Instance
X-Balanceador
ServerSignature
ServerTokens
Referer
X-Req-Head-Response
Cmstype
X-HeBS-Cache-Status
Cmsid
X-Consent-Required
X-Client-Vid
X-EPiphany-Vid
X-Client-Image-Vid
X-OpenCart-Lightning
Access-Control-Request-Headers
AR-ATIME
Filters
X-Data-Request
Num
X-HashTwo
AR-PoweredBy
AR-SID
AR-CACHE
X-Block-Rule
X-TKP-SRV-ID
Arrnode
X-Refresh
X-Amz-Id-1
BALANCEDTO
Max-Age
X-Header
X-Oferteo-Domain
SVR
X-Amcomm-Site
X-Ghost-Cache-Status
X-Adnet
X-Actindo-Thread-Id
X-HTML-Minification-Powered-By
X-PBY
Play-Detected-Device
X-Actindo-Rs
X-Actindo-Request-Id
X-Cache-Doesi
Disablevcache
Myheader
VANITY-HOST
Il-Cl
Home
X-Cocoon-Version
*
X-Session-Reinit
X-Upstream-Status
X-Proxy-Cache-Control
X-Server-IP
Access-Control
X-Via-S
X-Resty-Request-Id
X-Soro
Play-Detected-UserAgent
Resin-Trace
X-DSMX-Rewrite-MS
X-Varnish-Cache-Local
EagleEye-TraceId
Ufe-Result
X-Upstream-Backend
X-CacheLoc
Traffic-Origin
X-HA-Frontend
X-Cache-Dispatchercachecontrol
X-HA-Backend
X-Cache-Dispatcherpragma
X-Goog-Meta-Goog-Reserved-File-Mtime
X-SAPP
X-Aramark-SID
Thanks
Proxy-Cache
Machine
X-B2f-Not-Route
X-Batcache
X-DSMX-Render-MS
X-Info
X-Domino-CacheValidationWithETagResult
X-Domino-CacheValidationWithETagReason
X-Block-RuleID
X-Resolver-IP
Url
X-Disney-Akamai-Rule
X-Cms-Mode
Dispatcher
X-ARRServer
Cleartype
X-ACMCache
Load-Balancer
IISExport
IES-Server
Worker
X-Dev
X-WR-Flags
X-SERVER-NAME
Server-ID
X-FastCGI-Cache-Status
X-Highwire-Smart-Code
X-Dynatrace
Dynatrace
X-Now-Trace
Now
COMMERCE-SERVER-SOFTWARE
X-AEM
X-Proxy-Skip
X-Varnish-URL
X-Highwire-Sitecode
VServer
Device
X-Adobe-Loc
Bios
X-Adobe-Content
X-Drectory-Script
X-Forwarded-Host
X-Garden-Version
Copyright
X-Upgrade-Enabled
NtCoent-Length
AETN-Latitude
AETN-Country-Code
AETN-Longitude
MageStack-Cache-Hits
X-Depends
X-Blog
X-Custom-Name
AETN-Postal-Code
MageStack-Area
AETN-DEVICE
MageStack-Cache
AETN-Country-Name
AETN-EU
From
WP-AdvCache-MemCached
Dis-Env
X-Served-Server
AKA-DEVICE
X-GSL-Server
MageStack-Tag
X-Ms-Request-Id
X-RiS-UFDI
X-UnsetCookies
MageStack-Web-Node
Fastly-Debug-Digest
X-MCB-Server
AETN-State-Code
MageStack-Config
MageStack-Cacheable
MageStack-Cache-Status
MageStack-Debug
MageStack-Loadbalancer
HitType
Magicmarker
MageStack-Magento-Version
MageStack-Cache-Lifetime
Edgecast
X-Cache-Detail
X-Timestamp
DNNOutputCache
Aurora-Node
ServerNode
X-Cf-Powered-By
X-Varnish-Id
X-UA-Bot
Prot
X-WebNode
Ttl
VAR-Cache
X-Server-Addr
X-Application
X-Gyrobase-Publication
X-Test
X-DN-Cache-Control
Pf.Web.Request.Id
X-Directory-Script
X-Beatles
X-Rack-CORS
X-Fastly-Request-Id
X-Flex-Tags
X-Secret
PServer
X-WebKit-CSP-Report-Only
X-WEBMGR-CACHE
X-Confluence-Request-Time
X-SH-Cache-Status
AETN-City
AETN-Area-Code
X-Protected-By
X-Generated-Time
Fastly-Backend-Name
X-Flex-Evstart
X-Flex-Lang
X-Flex-Lastmod
X-Flex-Tag
X-Flex-Evend
X-Flex-Community
X-Middleton-PageSpeed
X-AutoRu-App-Id
X-Autoru-Host
AETN-Continent-Code
MageStack-PageSpeed
X-PHP-Response-Code
X-Goog-Meta-Policy
TC-S-Cache-M
TC-S-Cache
TC-Cache-U
X-Goog-Meta-Replace
X-Nx-All
X-CRA-DC
X-Captured
Pragrma
X-ASAP-Cache
X-Requestid
TC-Cache-IC
TC-Cache
X-ETag
X-Highwire-RequestId
X-Envoy-Upstream-Service-Time
X-Framework
X-Clara-ASAP
X-Highwire-SessionId
X-Streams-Distribution
X-SmartBan-URL
X-Rebelmouse-Cache-Control
X-SmartBan-Host
X-Nx
X-Origin-Date
X-Cache-On
Id
X-LBPoolMember
Viewport
Provider
EN-User
Access-Control-Allow-Header
X-Page
X-Cache-Time
N365rili
RN-Server
Ibf5scheme
X-Bip
VSID
X-Served
X-Tag-Playlist
X-CACHE-TTL
X-ORIKEY
Server-Ip
X-Gateway-Rate-Limit-Delayed
X-SDE-Name
X-SV
X-Deity
X-Appid
X-ENDPOINT
X-ROUTING
X-Cache-Me-Harder
Report-To
X-Varnish-Ip
Serverid
X-IP
X-Rack-Cors
NLCacheNote
CommunityServer
X-APIAUTH-VAL
X-APIVERSION
X-Serv
X-DB-Content-Length
ViewMode
X-Access-Control-Allow-Origin
X-Varnish-Debug-Hits
X-Appversion
X-TLS-Version
X-Akamai-Transformed
X-Pj-Cache-Status
BackendServer
Web
X-Vary-Options
X-RAMCache
X-Hosting-Env
X-7d-Instance-Id
X-7d-Trace-Id
X-Cache-Varnish
Yoncu-Errno
YF-ID
Provided-Host
X-Svr
X-ZSITES-DNS
X-HostName
X-V-Cache
Tempo
X-Policy
Description
X-Cname-TryFiles
X-Title
LB
GranicusServer
HTTPS
MS-CV
X-Aramark-CSID
X-Skip-Cache
X-DataDome
X-CacheID
ScoreTracker
X-Beget-Proxy
X-Status
AMP-Redirect-To
X-Shopware-Allow-Nocache
X-Shopware-Cache-Id
X-Desc
X-We-Are-Hiring
Paypal-Debug-Id
X-Varnish-Backend-Beresp-Backend
X-Nginx
X-SilverStripe-Cache
X-Reqid
X-MrHost
X-Webcelerate
X-Geo-IP
X-MAT-GEO
Keywords
X-HA
X-Obvious-Tid
X-Obvious-Info
X-Client-Id
X-ACCELERATE
Amfplus-Ver
X-Build-Id
X-FPC
X-Varnish-Grace
X-Transaction-Name
Tk
Debug-Status
X-MID-Host
X-Beluga-Status
X-ProBase-Server
X-Say-Cacheable
X-Cache-Node
Session-From
X-CH-Device
ServerIP
WN
X-Beluga-Response-Time-X
X-Beluga-Trace
X-Powered-By-Home.Pl
X-Processed
X-This-Proto
X-WN-ClientGroup
X-M
X-DevSrv-CMS
Ohc-Response-Time
X-Layout
X-Beluga-Cache-Status
MageStack-Cache-Lifetime-Sent
MageStack-Last-Modified
X-Beluga-Response-Time
X-Lw-Cache
X-Say-TTL
X-SayCDN-TTL
MageStack-Cache-Warning
X-Beluga-Node
X-Beluga-Record
Og
X-Cache-LB
X-SCM-Server-Number
SB-Site-IE-VERSION
X-ServiceProvider
X-Test-Debug
X-Varnish-Cache-Ttl
X-Rewritten-By
X-Powered-By-ADS
X-Gannett-Site-Version
X-ManagedFusion-Rewriter-Version
X-Node-Id
X-NodeID
X-W3TC-Minify
X-XHTML-Minification-Powered-By
X-Pass-Through
X-PM-ID
X-Cache-TTL-Current
X-Search-Id
X-Mighty-Proxy
Ssl-Proxy-Server
Cf-Ipcountry
Hit-Count
Purge-Cache-Tags
Response-Time
X-Varnish-Action
X-XHR-Current-Location
X-RemovedCookies
NZSpeedy
X-ReqId
Xc
Progma
X-Proxy-Server
X-Proto
X-ProcessESI
XX
X-Proxy-Cache-Key
Backend-Powered-By
X-WA-Info
X-Nginx-Request-Processing-Time
X-Airee-Node
X-BPool-Back
X-BServer
X-Origin-Server
CDCHOST
X-Who
Page-Template
X-Cache-Warmer
AC-ELC
X-Src-Webcache
X-Max-Age
Hosted-By
NGX
Server-Id
X-Node-App
X-Wodby-Node
AMP-Access-Control-Allow-Source-Origin
SB-Site-Device
X-Qnm-Cache
StatusCode
X-Vol-Correlation
X-Built-With
X-Custom-Header
X-NoIndex
X-HAProxy
X-Origin-Cache
X-Route
X-B3-Sampled
X-Instance
X-EC2-Instance-Id
X-Response
X-AMAZEEIO
X-Lb
DrivedBy
X-Vol-Mrp
SB-Cache-Remaining
X-Firefox-Spdy
X-Enhanced-By
X-Server-Generated
PBS
X-Cache-TTL-Age
SB-Cache-Life
X-FromPodPressCache
X-M-Reqid
REFRESH
X-M-Log
X-Now-Instance
X-Ms-Version
X-Backside-Transport
X-Global-Transaction-ID
X-DEBUG
X-Mobilized-By
X-Sid
X-RENDER-TIME
X-COUNTRY-CODE
X-CACHE-KEY
SERVER-ID
X-PROCESSED-BY
X-Oracle-Dms-Ecid
X-Compress-Hint
X-Scheme
X-Cdn-Forward
X-FORWARDED-PROTO
X-Geo
X-Actual-Url
X-Xml-Http-Blocked
WebServer
X-JoinUs
X-Old-Content-Length
X-Machine
X-FG-RequestId
Returned-Status
X-ASAP-Age
X-S-Misc
CDN-Uid
CDN-Cache
X-Varnish-Cached-TTL
CDN-CachedAt
CDN-PullZone
CmsfirstPublishTimestamp
CDN-RequestId
X-Varnish-Cached
X-UPServer
X-MCF-ID
X-Jcms-Ajax-Id
X-NginX-Upstream
X-Ruby-Cluster-ID
X-Sn-Servicetimems
CommercePlatform-Version
Httpd-Identifier
X-Meta-Imagetoolbar
X-Instance-Name
X-Meta-MSSmartTagsPreventParsing
X-Meta-MSThemeCompatible
MachineName
X-Nginx-Page-Cache
X-Hit
X-Firewall
MSThemeCompatible
MSSmartTagsPreventParsing
OracleCommerceCloud-Sandiego
OracleCommerceCloud-Version
Cache-Status
MwpReleaseVersion
X-ORIGN-SERVER
X-SG-Server
X-Magento-Route
X-Expires
Generate-Time
Prototype-RootPath
X-Itkg-Cache-Tags
X-Accel-Cache-Control
X-CSRF-Token
X-CAMPUSSUITE-TENANT
EQ-Cache
X-ENV
X-Enabled3
PagesDisplayed
V-Cache-Ttl
X-CAMPUSSUITE-ENVIRONMENT
X-CAMPUSSUITE-DEBUGGING
X-SSLTerm-Server
X-TEST
X-RiS-PX
X-Pageid
X-Front-Cache
X-Time-Microsecs
X-Tradeindia-Request-GUID
X-Vid
X-Tradeindia-SMgmt
X-Fastly-Backend-Reqs
X-Country
Cache-Tag
X-UT-Cache
X-Time-Spent
Fastly-Drupal-Html
Origin-Vm
X-Beresp-Ttl
RSL-Trace-ID
X-Enabled2
X-Enabled1
X-Cache-HT
X-Appmachine-Name
X-Appmachine-Duration
X-From-Cache
X-GZip
X-Varnish-Age-Debug
X-Optimization
X-Appmachine-CreatedOn
Fastly-Restarts
X-D-Time
Language
X-Ssl-Cipher
X-NMT-Proxy
X-Ruxit-Js-Agent
X-Static
X-Serverid
X-Varnish-TTL-Debug
Amp-Access-Control-Allow-Source-Origin
X-Telligent-Evolution
X-Router
X-Homeaway-Requestmarker
End-User-Country
Ews
X-Cache-Id
Servername
X-Origin-Upstream-Status
X-Mobile-Rewrite
PROGMA
PB-RID
PB-PID
X-Grid-Server
X-InDy-Memory
X-InDy-Time
X-InDy-Query
X-Generation-Time
X-Proxy-Id
X-UPSTREAM-Address
X-RequesterIP
X-Via-NSCOPI
Nitro-Cache
SINA-TS
SINA-LB
X-Zendesk-Origin-Server
X-Content-Type
FastCGI-Cache
X-Abuse
Pramga
Session-Id
X-BeResp-Ttl
X-Zendesk-User-Id
X-Cache-FS-Status
X-D2id
X-Navigation-Version
X-MyName
X-NewsFlow-Sitename
X-Olaf
X-PBS-Appsvrname
X-PBS-Appsvrip
X-MainProfileURL
X-MainProfileName
X-HP-CAM-COLOR
X-DynamicCache
X-HS-Status
X-Instance-Id
X-MainProfileID
X-MainProfileCategory
X-Built-By
X-Dck
X-Server-Ip
X-Batcache-Reason
X-Activity-Id
X-Amz-Meta-Version-Id
X-Pagely-Cache
X-Az
X-SSL
X-BIT-Node
X-VHosting-Cache
X-Varnish-Cache-Control
ID
X-Boot
X-OPNET-Transaction-Trace
X-Cache-ID
X-Debug-Message
X-CloudBurst-WordPress
Arrow-RequestId
SS
X-Cachable
X-Ser
X-Render-Time
X-SEA-Instance-Name
X-PressLabs-Stats
Sl-Pgid
X-Mobile-Device-Type
X-Mobile-Device
X-CloudBurst-Frontend
X-CloudBurst-Cache
X-SCProxy
X-CloudBurst-Backend
X-PBS-Fwsrvname
X-Reflector
Content-Sn
BlockPHPCallEnd
DB-Nickname
HA-Cloudapp
HA-Geocountry
HA-Geocity
X-VG-WebCache
X-UType
X-Served-From
X-PoweredBy
X-Requested-With
X-Rocket-Nginx-File
X-SuperCache
X-Rocket-Nginx-Reason
HA-Geolat
HA-Geolon
TYPO3-Pid
Request-Time
TYPO3-Sitename
X-Bcwwwid
X-CGP
X-Cdn-Origin
NKBVHEADER
ModuleCacheType
HA-Host
HA-Georegion
HA-Ipaddr
HA-Servedtime
L5d-Success-Class
HA-Urlpath
X-Phpwcms-Release
X-Phpwcms-Page-Processed-In
X-Cluster
X-Cache-Extended
X-Compressed-By
X-FastCGI-Cache
X-Log
X-Cache-Via
X-Cache-Action
X-Box
FRONT-END-SECUREBROWSER
X-Reflector-Cache
HitInfo
HSTS
TP-L2-Cache
TP-Cache
X-Oracle-Dms-Rid
X-Qiniu-Zone
X-Amzn-Trace-Id
X-Amzn-RequestId
X-Clx-Request
X-DDM-SERVER
X-MSU-SOURCE
X-DDM-SERVER-UPDATED
X-Amz-Apigw-Id
Webserver
Requested-Host
Content
SBSS
Unique-Request-Id
Web-Server
X-Fpc