Threat Level: green Handler on Duty: Guy Bruneau

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
Content-Type
Date
Server
Connection
Set-Cookie
Cache-Control
X-Powered-By
Vary
Expires
Content-Length
Last-Modified
Pragma
Accept-Ranges
Link
ETag
X-Content-Type-Options
P3P
X-XSS-Protection
X-Pingback
X-Frame-Options
X-AspNet-Version
X-Cache
Content-Language
Age
CF-RAY
X-UA-Compatible
Strict-Transport-Security
Via
X-Adblock-Key
X-Template
X-Language
X-Check
Access-Control-Allow-Origin
X-Varnish
X-Buckets
X-Generator
X-Cacheable
X-Drupal-Cache
Content-Location
X-Hacker
X-AspNetMvc-Version
X-Ac
X-Request-Id
X-Powered-By-Plesk
MS-Author-Via
X-Type
X-Cache-Group
X-Pass-Why
X-Runtime
WP-Super-Cache
Status
X-Cache-Hits
X-Powered-CMS
X-Permitted-Cross-Domain-Policies
Ngpass-Ngall
Host-Header
X-Download-Options
X-UA-Device
Access-Control-Allow-Credentials
X-Alternate-Cache-Key
X-Dc
X-ShardId
X-ShopId
Keep-Alive
Access-Control-Allow-Headers
X-Iinfo
X-Via
Content-Security-Policy
X-Tumblr-User
X-Tumblr-Pixel-0
X-Tumblr-Pixel
Access-Control-Allow-Methods
X-Tumblr-Pixel-1
X-Mod-Pagespeed
X-Logged-In
X-Request-ID
X-Backend
X-Served-By
X-Pad
X-Tumblr-Pixel-2
X-Contextid
X-ServedBy
X-Cache-Status
X-PC-Key
X-PC-Hit
X-Server
Powered-By
Upgrade
X-CDN
X-FRAME-OPTIONS
X-Host
X-Tumblr-Pixel-3
Content-Encoding
X-Cache-Hit
X-PC-Date
X-PC-Host
X-PC-AppVer
X-Port
X-Timer
X-Robots-Tag
X-Accel-Version
X-Varnish-Cache
X-Rack-Cache
X-Cache-Lookup
SPRequestGuid
X-SharePointHealthScore
MicrosoftSharePointTeamServices
X-Cnection
X-Amz-Cf-Id
X-Server-Powered-By
X-Request-Country
MicrosoftOfficeWebServer
X-Page-Speed
X-MS-InvokeApp
X-XRDS-Location
X-Safe-Firewall
Alt-Svc
X-Turbo-Charged-By
Rating
X-Content-Powered-By
CF-Cache-Status
X-AH-Environment
X-Tumblr-Content-Rating
X-Node
X-Content-Digest
X-Tumblr-Pixel-4
X-Wix-Renderer-Server
X-Seen-By
X-Wix-Request-Id
X-W-DC
X-Cache-Enabled
X-FullPageCaching
X-GitHub-Request-Id
Public-Key-Pins
Request-Id
X-PhApp
X-Webserver
Content-Security-Policy-Report-Only
X-INKT-SITE
X-INKT-URI
SPIisLatency
SPRequestDuration
Composed-By
Timing-Allow-Origin
Served-By
Cf-Railgun
X-Firenze-Processing-Times
X-Amz-Request-Id
X-Amz-Id-2
X-Proxy-Cache
X-HeyJason
Permitted-Cross-Domain-Policies
Liferay-Portal
X-Hyper-Cache
X-Spip-Cache
X-Styx-Version
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
Surrogate-Key-Raw
X-Pantheon-Endpoint
Access-Control-Max-Age
Xkey
Access-Control-Expose-Headers
X-Server-Name
Surrogate-Key
Charset
X-Swift-SaveTime
X-Swift-CacheTime
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
X-Tumblr-Pixel-5
X-CF-Powered-By
EagleId
Grace
X-SERVER
X-CDN-Pop
X-CDN-Pop-IP
Content-Script-Type
Content-Style-Type
Refresh
Content-MD5
Access-Control-Allow-Method
X-XN-Trace-Token
X-FW-Hash
X-XN-XNHTML
X-Hits
X-FB-Debug
X-Tumblr-Adult-Blog
X-Dw-Request-Base-Id
X-VCache
X-FW-Type
X-FW-Serve
X-FW-Static
Public-Key-Pins-Report-Only
X-Device
X-Clacks-Overhead
X-AWS-Id
X-LJ-Flow-ID
X-VWS-Id
X-Fastly-Request-ID
X-User-Agent
Real-Hostname
X-TNCMS
X-Loop
X-Cache-Server
X-Jimdo-Instance
X-Jimdo-Wid
X-Backend-Server
X-Generated-By
X-Cache-Config
X-Umbraco-Version
X-DDC-Arch-Trace
X-Cache-Result
X-Url
X-LiteSpeed-Cache
X-HOST
X-Cloud-Trace-Context
Edge-Control
X-Cached-By
X-Tumblr-Pixel-6
X-MiniProfiler-Ids
Fastly-Debug-Digest
Cartoon
X-ServerName
X-Cached
WZWS-RAY
X-Powered-By-360WZB
X-Cdn
PageSpeed
X-Px
X-Age
X-Hostname
X-CMS-Version
X-Outils-CS
NS-RTIMER-COMPOSITE
X-Whom
Surrogate-Control
Response
Fpc-Cache-Id
TCN
X-DynaTrace-JS-Agent
X-Middleton-Display
X-Middleton-Response
Display
X-Sol
X-Forwarded-For
X-DynaTrace
X-WebKit-CSP
X-Handled-By
Imagetoolbar
ServedBy
X-TTL
X-Content-Options
Rt-Fastcgi-Cache
Front-End-Https
X-Varnish-Cache-Hits
X-AspNetWebPages-Version
Product
DynaTrace
X-Recruiting
X-URL
IBM-Web2-Location
X-Msg-2-Log
X-From
X-Micro-Cache
X-Newrelic-App-Data
X-Do-Not-Hack
X-NetCat-Version
X-Country-Code
X-Varnish-Beresp-Grace
X-Varnish-Beresp-Ttl
X-Varnish-Beresp-Status
X-LiteSpeed-Cache-Control
Access-Control-Request-Method
Fhost
X-BC-Stapler
X-Returned-From
X-Actual-URL
X-Original-Request
X-Passed-To-DLL
X-Returned-From-DLL
X-Passed-To
X-FORWARDED-FOR
X-Stale
Alternate-Protocol
X-App-Hosting
X-Returned-From-BeforeDispatch
X-Passed-To-PostProcessResponse
X-Returned-From-PostProcessResponse
X-Passed-To-BeforeDispatch
X-Servedby
X-ApacheServer
X-Content-Encoded-By
Generator
X-Varnish-Host
X-Track
X-EC-Security-Audit
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Hosted-By
X-Matrix-Proxy
Origin
X-Matrix-Server
Akamai-IP
X-Platform
X-Expires-Orig
Page-Completion-Status
X-I
X-Server-ID
X-PERF
X-UD-Method
X-Varnish-TTL
Powered
X-CacheServer
X-Firenze-Processing-Time
X-Origin
Surrogate-Keys
Powered-By-ChinaCache
X-S
Host
X-BS
X-I-Sp
X-Location-Id
X-Varnish-Cacheable
Server-Info
X-Engine
X-Abuse
Magicmarker
X-Daa-Tunnel
ServerName
X-Cache-Rule
X-Art-Request-Id
X-Version
Content-Hash
X-Magnolia-Registration
X-VTEX-Janus-Router-Backend-App
X-Vtex-Processed-At
X-Vtex-Remote-Cache
Ag-Execution-Time
X-VTEX-Cache-Status-Janus-Edge
X-Powered-By-VTEX-Janus-ApiCache
X-Powered-By-VTEX-Janus-Edge
X-VTEX-Cache-Status-Janus-ApiCache
Ag-Server-Time
Ag-Send-Time
X-Varnish-Backend
X-Vtex-Processado-Em:
No
Content-Encoding-Handler
X-Microcachable
USPLoggingUUID
X-Cache-TTL
X-Response-Time
Content-Disposition
X-Source
X-Gamma-Serve
X-OneAgent-JS-Injection
X-RESOURCE
X-Cache-Info
X-URLSCHEME
X-Goog-Hash
X-Varnish-RemainingTTL
X-Varnish-Seen-By
X-CJ-Soft
X-Route-Server
X-Request-Time
X-B-Cache
X-Director
MIME-Version
X-Cache-Age
X-ATG-Version
X-DNS-Prefetch-Control
X-Instart-Request-ID
Lsrequestid
X-Developer
X-Upstream
X-Cache-Lifetime
Node
Version
X-Microcache-Status
X-Cache-Debug
X-Device-Type
X-Translation
X-Duration
SN
X-SDS
Content-Security-Policy-Rerport-Only
Fastcgi-Cache
X-Front
Last-Published
X-NoCache
Edge-Control-Message
X-DefendeR-Runtime
X-PwB-Node
X-DefendeR-Status
X-Cache-Control-Orig
Location
X-Varnish-ObjectSource
X-Varnish-Age
X-Cache-Expires
X-Varnish-RemainingLife
X-Geo-IP
X-Varnish-GracePeriod
Proxy-Agent
X-Cache-Operation
Req-Id
Proxy-Connection
X-Speed-Cache
X-Speed-Cache-Key
X-Rocket-Nginx-Bypass
Arr-Disable-Session-Affinity
Webluker-Edge
X-Cookie-Domain
PICS-Label
X-Revision
Buuteeq-Source
X-GeoIP-Country-Code
Cache-Key
X-FW
X-Server-Id
X-Zen-Fury
X-Akamai-Device-Model
X-Varnish-Server
X-Drectory-Script
X-Akamai-Device-Characteristics
Accept-Charset
Nitro-Cache
X-Storage
X-N
X-Content-Age
X-Powered-By-Server
X-Cache-Tags
X-GeoIP-Country-Name
X-LB
ServerID
Cache
W
X-Server-Upstream
X-Grace
X-UPSTREAM
X-Client-IP
Srv
X-ServerID
X-Processing-Time
S
CC-CACHE
X-Platform-Processor
X-Varnish-HitMiss
X-Geo-IP-Region
X-Geo-IP-Metro
X-Varnish-Count
Retry-After
X-Geo-IP-Country
X-Geo-IPV
X-Platform-Router
X-Fastcgi-Cache
X-Time
RTSS
X-Mobilized-By
Pics-Label
X-Amz-Version-Id
X-Dispatch
X-Kinsta-Cache
Accept-Encoding
X-Edge-Location
X-Vcap-Request-Id
X-Hypernode
X-Correlation-Id
X-Xrds-Location
X-Page-Cache
X-SV-FromDBCache
X-SV-Nginx-Duration
X-SV-Pid
MJ12bot
X-Trace
X-SV-CreatedAt
X-SV-Duration
SEOMOZ
X-CDN-Cache-Status
X-CDN-Node
X-Orig-Vary
X-Varnish-IP
X-SE-Debug
X-AOL-HN
X-Purge-URL
SVR
X-Config-Blacklist-Version
Filter-Revision
X-SV-Expires
X-Cache-Engine
Backend
X-StackifyID
X-Cache-Key
X-ACMCache
X-VARNISH-Cache
X-SV-Edge
X-SV-CacheTags
COMMERCE-SERVER-SOFTWARE
X-Real-Server
X-App-Server
X-Varnish-Hits
X-Mobile-URL
Id
X-Processed-By
Nodo
SSPAppContext
X-Application-Context
X-Platform-Cache
Qs-Cache
X-Yadis-Location
X-Nhost
X-WEBSERVER
X-NFE
X-BKSrc
Cm-Server
X-Frontend
X-Framework
X-Nurl
X-Directory-Script
NetMindSessionID
HAVer
HCVer
X-PG
X-PF-Uncompressing
X-Server-Response-Time
Host-Service
X-Connection-Hash
X-Member
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Cache-Doesi
X-Transaction
X-Twitter-Response-Tags
AMF-Ver
A-Powered-By
X-Nginx-Cache-Status
Content-Transfer-Encoding
X-ClientSide-Caching
X-Empowered-By
Front
X-Discourse-Route
Frame-Options
X-Purge-Host
X-TTFB
X-Prefetched
X-GeoIP
X-TTFB-L
X-Worker
X-Nginx-Host
X-Env
X-NB-Cached-Page
X-Blog
NODE
X-SmugMug-Values
X-SmugMug-Hiring
Smug-CDN
X-AbeBooks-Version
X-ARC
X-Plat-Va-Ip
X-Browser
X-Plat
X-CDN-Forward
X-Config-By
X-Sys-Req-ID
X-Edge-IP
Mobiquo-Is-Login
X-Plat-Be-Ip
X-NginX-Node
X-Resolver-IP
Cached
X-NginX-Upstream-Status
X-NginX-Upstream-Addr
X-NginX-Upstream-Response-Time
X-Cocoon-Version
X-Supported-By
IISExport
Backend-Timing
Section-Io-Id
X-Analytics
Pool-Info
X-V
Cneonction
X-ORACLE-DMS-ECID
X-NginX-Cache
Logging-CorrelationId
X-WA-Info
X-Varnish-Hostname
Author
WSR-Cache
Rewriter
X-Nitra-Side
X-Server-Start-Time
X-Origin-Id
X-Dynatrace
X-Cf-Powered-By
X-IIJ-Cache
IM-Version
X-Amz-Storage-Class
X-Cache-Control
X-Trace-Id
Server-Name
X-EPiphany-Vid
X-Client-Image-Vid
CacheControlHeader
X-Ttl
X-Client-Vid
X-Machine-Name
X-AOL-SNH
X-Adobe-Loc
X-Garden-Version
X-Adobe-Content
X-Grid-Server
X-TempDebug
X-HP-Trace-Project
X-HP-Trace-ID
X-SmartBan-Host
X-SmartBan-URL
X-Highwire-RequestId
X-Hit-Cache
X-F-Cache
Thanks
Ibf5scheme
X-Varnish-Debug-Age
Myheader
X-Pagename
X-XTM-Node
X-Session-Reinit
X-LW-Web-Server
X-Highwire-SessionId
Allow
WWW-Authenticate
X-Amz-Meta-S3cmd-Attrs
X-Varnish-Ttl
X-NginX-Cache-Status
Eomportal-Instance
X-Flow-Powered
X-Avvio-Cms-Cacheload
X-Debug
SRV
X-IsCacheURL
X-Dispatcher
X-Esi
X-NginX-Server
XDomainRequestAllowed
X-Balanceador
X-Domain-Checked
Dynatrace
X-App-Status
Head
X-Key
X-Provisioner-Version
X-Varnish-Debug-TTL
A
X-WR-Flags
BALANCEDTO
X-LB-Server
CT
X-Jphone-Copyright
X-Sucuri-ID
X-NewRelic-App-Data
VAR-Cache
X-EDGECONNECT-GUID-DEBUG
X-Atraveo-ETag
X-Atraveo-From-Varnish-Cache
X-Atraveo-Cache-Control
Noq
X-Atraveo-Param-Rm
Ram
X-Vhost
Cpu
X-Unique-Id
X-Atraveo-Expires
X-ID
ServerSignature
X-Atraveo-Set-Cookie
MW-Webserver
X-Airee-Node
X-Vary-Options
X-Srv
X-Atraveo-TTL
ServerTokens
X-Atraveo-Varnish-Server-Id
Mime-Version
X-Atraveo-Zone
X-Pressidium-NinukisWP-Ver
Set-Cookie2
X-Optimization
X-Cache-Level
AsisCache
Keywords
Sid
X-MrHost
X-Real-IP
Referrer-Policy
X-B
X-BackendServer
X-Hosts-Backend
Actual-Object-TTL
X-JG-Page-Cache
X-RiS-UFDI
X-Webstats-RespID
X-Cache-PageType
X-Nginx-Cache
X-Unique-ID
Ngpass-Vcall
X-PRAM
ORIGIN
X-Force
X-Source-ID
S-Cnection
X-Cache-Fix
X-FastCGI-Cache
X-Symfony-Cache
X-Magento-Tags
X-Varnish-Grace
Beyond-Iis
X-HOSTNAME
X-SSL-Cipher
X-DealerOn
X-SV
X-Signature
X-Dev
X-Cms-Mode
Servername
Worker
X-SSL-Protocol
X-Dns-Prefetch-Control
Bios
SBGI-RenderTime
SBGI-RealPath
X-SRV
X-HW
X-HostName
SBGI-Device
SBGI-9
SBGI-1
SBGI-10
SBGI-5
SBGI-7
X-Server-IP
X-Distributed-By
X-ServerIndex
X-Restarts
X-DTC
D
X-Goog-Metageneration
X-Hiawatha-Cache
X-Detected-Device
X-Goog-Generation
X-Goog-Stored-Content-Encoding
Real-Server
X-Goog-Storage-Class
Web
X-SDE-Name
X-Clara-ASAP
X-ASAP-Cache
X-CB-Server
X-Smartcache-Keys
Ctx
X-Captured
X-Webcelerate
X-Goog-Stored-Content-Length
X-Smartcache-Timeout
X-EdgeConnect-Origin-MEX-Latency
X-GUploader-UploadID
Provider
X-Ob-Mode
X-EdgeConnect-MidMile-RTT
X-WP
CLMOB
P-WS
X-DOM
CmsCacheEngine
Content-Generator
X-Distributor
X-Cache-Set
X-Ser
Cmsid
X-Id
X-Upstream-Backend
X-Fstrz
X-HTML-Minification-Powered-By
X-REDIRECTSERVER
From
X-Rack-Cors
X-Runtime-Affili
X-Varnish-RemainingGrace
X-Header
MC
NLCacheNote
P-LB
Cmstype
HitInfo
ScoreTracker
X-Span
VnhCdn-Status
X-Appmachine-Environment
X-Rebelmouse-Surrogate-Control
X-We-Are-Hiring
If-Modified-Since
B-Powered-By
Warning
DrivedBy
X-Nginx
X-DataDome
Cache-Rule
NnCoection
OT-RequestId
X-Response
X-Secret
X-FIRSTBase
Prxy
Ksid
X-Enhanced-By
X-7d-Instance-Id
X-Unbounce-Variant
X-Unbounce-PageId
X-Server-Instance
X-Cache-Provider
X-Unbounce-VisitorID
Cluster-ID
X-Accel-Expires
X-Apm-Telemetry-Syncmark
X-Actindo-RS
X-Middleton-PageSpeed
X-Cache-Source
Resin-Trace
Paypal-Debug-Id
X-Cache-Var
X-Cache-Var-Map
X-GSL-Server
Fw-Via
Ec
X-Lifetime
X-Site:
Device-Type
Proxy-Cache
X-DSMX-Rewrite-MS
Content-Server
Backend-Node
X-Environment
X-Sov
N365rili
Sophnep-Edge-FX
X-RDP
X-Server-By
X-Cache-On
X-7d-Trace-Id
X-Rot
X-MAT-GEO
X-T3CacheTags
X-Desc
X-B2f-Not-Route
X-DSMX-Render-MS
X-T3CacheInfo
X-T3Cache
X-Platform-Server
X-Invoke-Duration
X-RequestId
X-Rebelmouse-Cache-Control
Access-Control-Request-Headers
X-AISO-Server
X-Frames-Options
Imx-Cookies-Used
X-Cache-Node
Description
NZSpeedy
INCOMING-TIME
SS
X-ORACLE-DMS-RID
Cteonnt-Length
X-Phpwcms-Release
X-Phpwcms-Page-Processed-In
X-Magento-Action
WP-AdvCache-MemCached
X-VC-TTL
MageStack-PageSpeed
Serverid
CommunityServer
Server-Ip
MageStack-Web-Node
Xc
MageStack-Config
M
MageStack-Loadbalancer
MageStack-Tag
X-4ormat-Cacheable
X-Rack-CORS
MageStack-Cache
MageStack-Area
MageStack-Cache-Status
MageStack-Cache-Hits
MageStack-Cache-Lifetime
X-RealServer
X-Backend-Name
MageStack-Debug
MageStack-Cacheable
X-Varnish-Currency
X-Varnish-Action
X-Varnish-Esi-Method
X-Varnish-Set-Cookie
Max-Age
X-Turpentine-Cache
GenSvr
X-RequesterIP
X-Remote-Addr
X-DN-Cache-Control
X-Varnish-Store
Hosted-By
X-DN-GyrobaseID
Accept-Language
X-Pagely-Cache
Copyright
Il-Cl
X-HITS
X-Varnish-Instance
Ttl
X-Xhr-Current-Location
X-Search-Id
X-CSRF-TOKEN
Pool
X-Is-Mobile
Expiries
X-OPNET-Transaction-Trace
WFE
X-Runtime-Memory
X-Varnish-URL
X-Varnish-Esi-Access
Nginx-Cache
X-Src-Webcache
X-Server-Addr
X-Bcwwwid
Fastly-Restarts
T
X-Author
X-Generated
X-Proto
X-Bypass-Ssl-Transform
X-AG-MIPS
X-ASAP-Age
X-RSS-CACHE-STATUS
X-FCMS-Cache
X-Oracle-DMS-ECID
X-Ocache
X-Varnish-Backend-Healthy
X-Dw-Trace-Id
X-Hstore
X-Info
X-SID
X-Time-Microsecs
AGI-Request-ID
X-Varnish-Error-Restart
X-Hrouter
User-Agent
X-Amz-Id-1
X-Litespeed-Tag
Atp-Isdpp
X-Seschat-URL
X-SeschatLayout
Mto-License-Status
IsMobile
X-AccessDev
X-Stage
X-SeschatDID
X-APP
X-Cluster-Node
X-SeschatRedID
X-SeschatTemplateID
X-Turpentine-Esi
X-ManagedFusion-Rewriter-Version
X-TB-M
X-Litespeed-Cache-Control
NS-VaryByCustom-Key
X-COUNTRY-CODE
PServer
X-Healthy
Server-Id
VServer
User-Cache-Control
X-Hosting
X-DEBUG
X-Rewritten-By
X-ACCELERATE
X-NewsFlow-Sitename
X-Cluster-Host
X-Company
X-UseReverse-Proxy
X-Webapp
X-Cache-Extended
X-CDN-COMPRESS
X-Not-Cacheable
VC-NoCache
X-Status
X-Cache-Keep
E-TAG
Expire
X-Cache-TTL-Remaining
X-CacheResult
X-Fedora-School-Id
X-Faeria
X-Contact
X-Cache-Device-Type
X-Cache-2
X-A
XDisk
X-Application
X-Box
X-Firewall
X-NewsFlow-DoCache
TP-Cache
X-Security
TP-L2-Cache
X-Cache-Action
X-Clx-Request
X-Mobile
Brandcast-Load-Balancer
Brandcast-Brand-Id
Cache-Status
Og
Url-Hash
Powerd-By
At-Shoptype
X-ACLR-Version
X-OCTOPOD
X-Node-Name
X-OpenCart-Lightning
X-Ratelimit-Remaining
X-IP-Address
At-Isb
X-Farm-Server
X-Tile-Url
X-Meta-Imagetoolbar
X-Venda-Hitid
X-Instance-Name
X-Meta-MSSmartTagsPreventParsing
MwpReleaseVersion
Machine
X-Meta-MSThemeCompatible
X-Cache-Backend
X-Catalyst
Httpd-Identifier
Content-ID
MSSmartTagsPreventParsing
X-Custom-Header
MSThemeCompatible
X-Router-Backend
X-LW-T
X-JAVAX-PORTLET-FACES-NAMESPACED-RESPONSE
Content
X-WR-MODIFICATION
X-Wm-VIP
Debug-Status
QC-Hit
QC-Time
QC-Key
X-Wm-1
X-Wikidot-Static-Cache
X-E
RN-Server
X-ProxyInstancename
X-Timing
X-Wikidot-Backend
X-WHOIS-Cached
WSCLoggingUUID
CIPHER-NAME
Kanooh-Host
X-Domino-CacheValidationWithETagResult
X-WorkerInstancename
Progma
X-Domino-CacheValidationWithETagReason
X-HAProxy
X-Varnish-Cache-Local
X-EPiLogOnScreen
X-Render-Time
X-Content-Security-Policy-Report-Only
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