Threat Level: green Handler on Duty: Didier Stevens

SANS ISC: HTTP Header Usage Statistics - Internet Security | DShield 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
Content-Length
X-Frame-Options
Strict-Transport-Security
Last-Modified
Accept-Ranges
Pragma
X-Content-Type-Options
X-Powered-By
CF-RAY
ETag
Link
X-XSS-Protection
Expect-CT
Via
X-Cache
Age
Access-Control-Allow-Origin
Content-Security-Policy
Content-Language
P3P
X-UA-Compatible
X-Cache-Hits
X-Served-By
X-Amz-Cf-Id
X-Varnish
Referrer-Policy
X-Timer
CF-Cache-Status
X-Request-Id
X-FRAME-OPTIONS
Access-Control-Allow-Headers
X-AspNet-Version
Access-Control-Allow-Methods
X-Xss-Protection
X-Runtime
X-Download-Options
Access-Control-Allow-Credentials
X-Drupal-Cache
X-Cacheable
Alt-Svc
X-Generator
Content-Security-Policy-Report-Only
X-Request-ID
X-Check
X-AspNetMvc-Version
Status
X-Cache-Status
X-Adblock-Key
Timing-Allow-Origin
X-Iinfo
X-DNS-Prefetch-Control
X-Permitted-Cross-Domain-Policies
X-Template
Content-Encoding
X-Language
X-Content-Security-Policy
X-Turbo-Charged-By
X-CDN
X-Type
Keep-Alive
X-Buckets
Xkey
X-Backend
X-Cache-Group
X-AH-Environment
WPE-Backend
Access-Control-Max-Age
X-Pass-Why
X-Age
X-Server
CF-Ray
Upgrade
X-POWERED-BY
EagleId
Access-Control-Expose-Headers
X-Via
X-Nginx-Cache-Status
X-Server-Powered-By
X-Pingback
X-Drupal-Dynamic-Cache
X-Varnish-Cache
X-Swift-SaveTime
X-Swift-CacheTime
Grace
X-Hacker
X-Amz-Request-Id
X-Amz-Id-2
X-UA-Device
Ali-Swift-Global-Savetime
X-Robots-Tag
Cf-Railgun
P3p
X-Envoy-Upstream-Service-Time
X-Proxy-Cache
X-LiteSpeed-Cache
X-Page-Speed
X-Ua-Compatible
Request-Context
Content-Location
X-Device
X-Ac
X-Node
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Cnection
X-Host
X-Server-Id
X-Cache-Lookup
X-Amz-Version-Id
Surrogate-Control
X-WebKit-CSP
X-Backend-Server
X-Rack-Cache
X-Rq
X-Response-Time
X-Application-Context
X-Readtime
X-CST
EagleEye-TraceId
X-Dns-Prefetch-Control
Pinterest-Generated-By
Server-Timing
X-Url
X-Cloud-Trace-Context
X-TTL
X-OneAgent-JS-Injection
X-Instart-Request-ID
Request-Id
X-Px
Report-To
X-Country
X-Clacks-Overhead
X-ORACLE-DMS-ECID
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
Feature-Policy
Rating
Edge-Control
X-Country-Code
Allow
X-DynaTrace-JS-Agent
Charset
X-DataDome
X-Powered-CMS
X-FTR-Request-ID
X-Vname
X-TtlSet
X-PC
X-ESI
X-Server-Name
X-Origin-Cache
X-DynaTrace
NEL
X-MS-InvokeApp
X-Goog-Hash
X-Recruiting
X-Varnish-TTL
X-ORACLE-DMS-RID
X-Cached
X-VARITI-CCR
X-Vhost
Content-MD5
X-GitHub-Request-Id
RTSS
X-Version
X-F-Cache
X-Geo-Segment
X-Exp-Variant
X-Exp-Id
X-Cdn-Fetch
X-Kinja
X-GoogleNews-Bot
X-Kinja-Build
X-Kinja-Revision
X-Kinja-Server
X-Powered-By-Plesk
Public-Key-Pins
PB-RID
PB-PID
Pinterest-Version
X-Upstream-Env
X-Mobile-Rewrite
X-Pinterest-Rid
Arc-Version
X-Mod-Pagespeed
X-CF-Powered-By
Verso
Accept-CH
X-Client-IP
X-D2id
SPRequestGuid
X-Abt-Application-Version
MS-Author-Via
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-N
X-Dispatcher
X-SharePointHealthScore
AR-PoweredBy
AR-ATIME
X-Amz-Rid
AR-CACHE
X-HeyJason
Permitted-Cross-Domain-Policies
X-Do-Not-Hack
X-Navigation-Version
X-TEC-API-VERSION
X-TEC-API-ROOT
X-TEC-API-ORIGIN
Nginx-Cache
X-T
DynaTrace
Accept-CH-Lifetime
X-Dw-Request-Base-Id
Paypal-Debug-Id
X-Trace
X-Fastly-Request-ID
X-Upstream
X-Grace
X-Varnish-Age
Arr-Disable-Session-Affinity
X-Hits
TCN
X-FastCGI-Cache
X-Forwarded-Proto
X-Amz-Meta-S3cmd-Attrs
X-Id
X-DIS-Request-ID
X-Origin-Upstream-Status
X-Shield-Request-Id
X-Pad
SPIisLatency
SPRequestDuration
X-Content-Options
X-Ruxit-JS-Agent
X-Cache-Hit
AR-SID
X-Logged-In
Realpath
X-Content-Digest
Access-Control-Request-Method
X-IPLB-Instance
X-Kinsta-Cache
X-Mrf-Item-Lastmod
X-Mrf-Section-Lastmod
X-Acc-Meta-Resource-Type
X-XRDS-Location
X-NF-Request-ID
Mrf-Cache-Status
MRF-Tech
X-B
X-Goog-Metageneration
X-Goog-Generation
X-Goog-Storage-Class
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-SS-Set-Cookie
X-HW
X-Vcap-Request-Id
S
X-Debug
X-MSEdge-Ref
Service-Worker-Allowed
X-Ser
Server-Name
X-FTR-Balancer
X-PressLabs-Stats
X-FTR-DC
X-Country-Code-Real
X-FTR-Realm
X-FTR-Backend-Server
X-FTR-Backend
X-FTR-Cache-Status
X-Frontend
X-Wix-Server-Artifact-Id
Tracecode
X-FTR-Expires
X-Cache-Key
X-NewRelic-App-Data
AMP-Access-Control-Allow-Source-Origin
Fastcgi-Cache
Rt-Fastcgi-Cache
X-Server-ID
Eomportal-Instance
X-GUploader-UploadID
Alternate-Protocol
X-Oneagent-Js-Injection
Surrogate-Key
Cleartype
X-Cache-Rule
X-Forwarded-For
Cache-Status
X-HS-Hub-Id
X-HS-Content-Id
X-NWS-LOG-UUID
X-Analytics
Backend-Timing
X-VCache
Host
X-Srv
X-Revision
TP-Cache
TP-L2-Cache
X-User-Agent
FilterID
X-Debug-Info
X-FTR-Cache-Host
X-Rid
X-Whom
Fastly-Restarts
Public-Key-Pins-Report-Only
X-Akam-SW-Version
X-AOL-HN
X-Cache-2
X-Oracle-Dms-Rid
ServerID
X-Via-JSL
X-Varnish-Backend
X-RateLimit-Remaining
X-Content-Powered-By
X-Accel-Buffering
X-Request-Received
X-Request-Processing-Time
Accept-Charset
X-Zen-Fury
Front-End-Https
X-Webkit-CSP
Viewport
X-Cdn
X-Mobile
X-Kinja-Server-Push
X-Ttl
X-Cached-By
X-WPE-Loopback-Upstream-Addr
Liferay-Portal
X-Node-Name
X-App-Environment
X-XRDS-LOCATION
X-B3-Traceid
X-LB-Cache
X-Cache-Control
X-Magnolia-Registration
Host-Header
X-Cluster
X-Content-Security-Policy-Report-Only
X-Varnish-Hostname
X-Page-Id
X-B3-Sampled
X-Hostname
Cache-Tag
X-Akamai-Edgescape
X-Handled-By
X-Request-Guid
X-TT
X-Tumblr-User
X-Tumblr-Pixel-0
X-Tumblr-Pixel
X-Framework
X-Device-Type
X-Platform-Server
X-BCube-Filmed-By
Upgrade-Insecure-Requests
X-Instance
X-FB-Debug
X-Signature
X-B-Cache
DC
X-Cache-Server
Server-Node
X-Origin-Server
X-TT-TIMESTAMP
Source
X-TA-CDN-Provider
X-Correlation-Id
MicrosoftSharePointTeamServices
Retry-After
X-Accel-Expires
X-Servedby
X-Contextid
X-Amzn-Trace-Id
X-WA-Info
HitType
Server-Info
HitInfo
X-Cache-Action
X-Varnish-Server
X-APP-VERSION
X-Cache-Operation
X-Sol
X-Middleton-Display
Display
X-Distil-CS
X-Port
X-Daa-Tunnel
X-Esi
X-Generated-By
X-Amz-Replication-Status
X-Geo-Country
Content-Script-Type
Content-Style-Type
AsisCache
X-Edge-Location
X-Wix-Request-Id
X-Seen-By
X-GeoIP
GEO-INFO
Webserver
X-RequestSource
X-S
X-Tumblr-Pixel-2
X-TX-ID
X-WebKit-CSP-Report-Only
X-Hyper-Cache
X-Tumblr-Pixel-1
ServedBy
X-Status
Actual-Object-TTL
X-Locale
X-Edge-Cache
X-FW-Static
X-Response-Served-From
X-Region
X-UUID
X-Varnish-Hits
Healthy
X-Jobs
X-FW-Type
X-Edge-Cache-Key
X-FW-Serve
X-FW-Hash
X-FW-Server
User-Agent
X-Adobe-Content
X-Drupal-Cache-Tags
X-Adobe-Loc
X-DataStream-Cache-Status
X-Litespeed-Cache
SRV
X-Varnish-Grace
Refresh
Filters
S-Cnection
X-Newrelic-App-Data
X-Yottaa-Optimizations
X-Yottaa-Metrics
X-Amz-Server-Side-Encryption
NGB
X-Proxied
IBM-Web2-Location
X-Cache-TTL-Remaining
X-CDN-Forward
X-Fastcgi-Cache
X-Middleton-Response
Response
X-Cache-Age
AR-Request-ID
X-Az
X-Activity-Id
X-AppVersion
X-App-Server
X-Content-Type
X-Cache-NE
X-Pc-Key
X-Pc-Hit
X-Pc-Appver
Payment
X-Cache-Remote
X-Cacheable-TTL
X-Correlation-ID
X-Unique-ID
X-Ruxit-Js-Agent
Cache
X-Cache-TTL
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
Datacenter
Served-By
X-Vg-Webcache
X-UA
Country
X-ATG-Version
Edge-Cache-Tag
X-HS-Cache-Config
X-Mode
X-Akamai-Transformed
X-Sucuri-ID
Load-Balancing
X-ProcessESI
Machine
Meta-Geo
X-Is-Bot
X-RemovedCookies
X-Detected-As
X-Rendered-As
X-RN-RSRV
X-Varnish-IP
X-BYPASS-REASON
X-ProxyCache-Status
X-Rocket-Nginx-Bypass
X-OCL
X-FC-Vary-Parameters
X-Proxy
X-ProxyCache-Key
X-PCL
User-Cache-Control
Webcakes-App-Version
TWC-Privacy
Webcakes-App-Name
X-Amz-Meta-Surrogate-Control
Access-Control-Allow-Method
Webcakes-Region
TWC-Locale-Group
TWC-GeoIP-Country
Mn-Server-Ip
Now
Cache-Name
DB-Nickname
L5d-Success-Class
Property-Id
Cache-Key
X-PERF
Backend
TWC-Device-Class
TWC-Connection-Speed
TWC-GeoIP-LatLong
X-Origin-Hint
X-Varnish-Cacheable
X-Tb
X-Origin
X-Human
X-Hosted-By
X-Cache-Category-Id
X-Grey
X-Cache-Config
X-BB-IP
X-EIG-Tracking-Id
X-Viewer-Country
X-ApacheServer
X-Debug-Cache
X-Pubstack
X-Source
X-ServerID
X-Routing-Service
X-Hit
Access-Control-Request-Headers
X-Format
Azure-SiteName
Azure-RegionName
Azure-InstanceId
X-Section
X-CDN-Cache
Azure-Version
Azure-SlotName
X-Generated
S-Rt
X-Environment-Context
X-Via-Fastly
X-NodeID
X-Original-Request
X-Backend-Name
X-Access
X-OVcl-Cache
X-Varnish-Cache-Hits
X-Loop
X-Zipkin-Id
X-Upgrade-Enabled
X-TNCMS
ServerName
X-CCM
X-L-Path
X-JoinUs
X-Site-Version
X-OVcl
X-IP
X-LJ-Flow-ID
X-NGENIX-Cache
X-AWS-Id
X-App-Name
X-Agile
X-Agile-Age
X-Agile-Id
X-Real-IP
X-Proxy-Build
X-Xfnlog-Site
HostName
X-Rule
X-Www-Served-By
X-VWS-Id
X-SplitTest
X-Timing-Wait
X-TWH-CORRELATION-ID
Selected-FE
X-Ocache
X-Drupal-Cache-Contexts
X-HS-Combine-CSS
X-Storage
X-Origin-CC
X-Pc-Host
X-Cache-Var-Map
X-Cache-Var
X-Pc-Date
X-Akamai-Request-ID
X-URL
X-Upstream-CT
X-Upstream-HT
X-NC
X-Vgn-Hpd-Reason
OT-Force-Account-Verify
X-Time-Microsecs
X-Nginx-Cache
X-Mshield-Cache-Status
X-Mrs-Cache
From-Origin
X-Mrs-Cache-Hits
X-Mrs-Age
X-UA-Device-Type
XServer
X-NCache
X-RateLimit-Limit
X-Microcachable
Fastcgi-X-Cache-Version
Fastcgi-Useragent
X-Internal-Host
Fastcgi-X-Cache
Powered-By-ChinaCache
X-PHP-Backend
X-SERVER-NAME
X-Amz-Apigw-Id
X-Forwarded-Host
X-Amzn-RequestId
Pagespeed
X-Distributor
Fastly-SSL
X-Varnish-Beresp-Status
X-Varnish-Beresp-Grace
X-M-Reqid
X-M-Log
X-Feature
X-Qnm-Cache
X-Release
LB
X-Iejgwucgyu
X-Ms-Blob-Type
X-Ms-Lease-Status
X-Ms-Request-Id
Pagetype
X-Ms-Version
X-Birta-Served
X-Birta-Cache-Post
X-Cache-Backend
X-EdgeConnect-Cache-Status
X-Labrador-Cache-Channel
X-Connection-Hash
X-Transaction
X-Twitter-Response-Tags
MIME-Version
NtCoent-Length
X-VG-TLSProxy
X-V
X-Webkit-Csp
X-Instance-Name
X-B3-Spanid
Frame-Options
X-Ah-Environment
Time
X-GZip
X-Web-Node
X-C
Ar-Sid
X-Varnish-Beresp-Ttl
X-D
X-Date
X-Org
Fly-Request-Id
X-Request-UUID
Ec-Rule-Version
Fly-Cache
X-Request-URI
X-ARC
X-Application
Host-ID
X-G
X-A-Wwc
X-Trv-Group
X-Accel-Expires-Debug
X-NU-AKA-ACS-Version
X-ScT
X-Hnp-Log
X-IN-APIGATEWAY
X-Region-Sid
Cneonction
AKAMAI
X-CF-Lambda-Fn
X-Cache-Bucket
Ajk
X-CF-Lambda-Version
X-Server-By
X-CS
X-Server-Time
X-PAYTM-SRV-ID
X-Block-Status
X-SRCache-Key
X-B-Cookie
X-Redis-Cache
X-SIPLIST1
Cache-Prefix
Arc-Country
BehaviorPad-Version
X-BB-ID
X-A-Dgt
X-From
X-S-Cookie
Server-Int
X-WebServer
X-IN-WAF
Rendered-Blocks
X-Rewrite-Enabled
X-Via-CDN
X-Via-Edge
X-Via-SSL
X-Irp-Debug
T-Server
X-CUA
VivaBuild
X-Rojux
X-Developer
Viewtype
Web-Mar-Node
V-Age
X-Died
Xc-Version
Www
X-A-Dam
X-UE-Client-Country
IsBot
MD5-Digest
X-No-Session
X-Generation-Time
X-Gen-Mode
X-Generated-In
X-A-Dcw
X-VG-WebServer
X-A-Ccd
X-Dispatcher-Server
X-IN-SSL-APIGATEWAY
X-Logtrace-Id
NGX
X-A
Meta-Geo-Continent
X-Destination
X-DPWN-IS-SECURE
X-Powered-By-ANYU
WZWS-RAY
X-Sucuri-Cache
X-FireWall-Port
Request-EU
Request-Country
X-VServer
Release
Request-Time
X-Phone
True-Client-Country-4JS
X-Wikidot-Backend
SN
X-We-Are-Hiring
Proxy-Connection
Pragrma
MI-Cache
MI-Cache-Age
MI-API
Magicmarker
Kp-EeAlive
X-Varnish-Action
NodeID
Origin-Edge-Control
Origin-Cache-Control
On-Server
X-MI-In-Market
X-Wikidot-Static-Cache
X-Layer
X-Debug-Log
X-ElasticPress-Search
X-Debug-Cookies
X-Crawler
X-Core-Value
X-Sf
X-Eu-Site
X-ServiceProvider
X-Fastly-Cache
X-F5-Cache
X-External-Request-Id
X-CGP
X-GeoIP-City
X-UnsetCookies
X-S-Maxage
Mobile-Detection-Method
X-Key
X-Var-Ttl
Cteonnt-Length
X-HTML-Minification-Powered-By
X-Cache-Enabled
X-Cache-CFC
X-Hl-Ver
X-Amz-Meta-Cache-Control
HA-Urlpath
Server-Host
Cache-Tags
X-Node-Id
X-Owner
HA-Cloudapp
X-RCS-CacheZone
HA-Geocountry
HA-Geocity
X-NX-Host
X-Origin-TTL
Esi-Enabled
Decoy-Debug-TTL
Decoy-Debug-Status
Decoy-Debug-Key
Country-Code
Backend-Name
HA-Geolat
GMS-Ver
X-Platform
X-RateLimit-Limit-Second
HA-Geolon
HA-Servedtime
HA-Ipaddr
HA-Host
CDCHOST
HA-Georegion
Ha-Gx-Prefs
X-RateLimit-Remaining-Second
X-Webstats-RespID
X-HOST
X-NWS-UUID-VERIFY
X-App-Version
X-Stale
X-Cdn-Origin
X-Cache-Srv
X-Swa-Ws
X-Cache-URL
X-Backend-TTL
X-Cache-Host
X-Backend-Host
X-Reboot
X-Backend-Url
X-Sorting-Hat-ShopId
X-Backend-State
X-Hash
X-GeoIP-Country-Code
X-Cache-Expires
X-Sorting-Hat-PodId
X-Secret
X-ShardId
X-Passed-To-PostProcessResponse
X-ShopId
X-Shopify-Stage
X-Device-Os
X-Epic-Correlation-Id
Adler-Geo
X-FW-Version
X-Fstrz
X-Fetched-On
X-Gannett-Site-Version
X-Developers
Apple-News-Services-Handled
X-Clientip
X-Content-Age
X-Ckpd-Fst-Backend
X-Skip-Cache
X-Sn-Servicetimems
Apple-News-Services-Request-Url
Apple-News-Services-Parsed-Url
Apple-News-Services-Host
X-Server-IP
X-Alternate-Cache-Key
X-Croise-Owner
X-Cdn-Srv
X-Passed-To
X-Up
Odigeo-Trace-Id
Section-Io-Cache
RNT-Time
Server-ID
Fastly-Backend-Name
X-Request-Time
X-Variation
X-MSEdge-Features
RNT-Machine
Origin
X-Returned-From-PostProcessResponse
X-Returned-From
X-Returned-From-BeforeDispatch
X-Response-By
Platform
X-Location
PFcat
X-Matched-Rule
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
X-TT-LOGID
X-Returned-From-DLL
X-Tumblr-Pixel-3
Heartbleed
X-Trace-Id
X-Passed-To-BeforeDispatch
X-Actual-URL
X-Thinkindot-L3
X-VCT
X-Worker
Uber-Trace-Id
Thinkindot-Control
Countrycode
X-MSEdge-Flight
X-Passed-To-DLL
X-Nginx-Cache-Key
Is-Eu
X-Csrf-Token
X-CACHE-AGE
HTTPS
X-Oss-Server-Time
X-Oss-Storage-Class
X-Core-Mission
Sid
X-Rebelmouse-Cache-Control
Content-Disposition
X-Store
PageSpeed
X-Rebelmouse-Surrogate-Control
X-Servername
Fastly-SIE
Fastly-SWR
X-Oss-Request-Id
X-Alicdn-Da-Ups-Status
X-Oss-Object-Type
Resin-Trace
X-Oss-Hash-Crc64ecma
X-Ua
X-Policy
CDN
WP-Super-Cache
X-Atg-Version
X-Oracle-Dms-Ecid
X-Ezoic-Cdn
RequestId
X-Servedbyhost
REQUESTUUID
X-Planisys-CDN-TTL
X-Pf-Uncompressing
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
X-Cluster-Node
Powered
X-Refresh
X-Real-Ip
ProcessTime
Warning
X-TIME
X-Proto
CF-IPCountry
Xserver
ViewerVersion
X-GEO
We-Hiring
X-Cache-ASPX
Mail-Subject
X-Dc
X-Endurance-Cache-Level
X-Req
X-GoCache-CacheStatus
Cache-Cookie-Set-Idcheck
Dnion-Transfer-Encoding
Cache-Cookie-Set-From
Cache-Cookie-Set-Lfrom
NODE
X-Newrelic-Synthetics
X-Pjax-Url
X-DC
X-B3-TraceId
X-Surge-Debug
NnCoection
Hostname
X-Varnish-Ttl
CACHE
X-Edge-IP
X-Server-W
X-Page-Type
X-Origin-Date
X-Origin-Expires
X-CLOUD-TRACE-CONTEXT
X-Time
GeoIp-Country-Code
X-COUNTRY
X-Cache-Control-Set-By
X-HCF
X-Aed
Geoip-Latitude
X-Varnish-HitMiss
X-Guploader-Uploadid
X-Nc
Pramga
X-Ms-Lease-State
X-CSRF-Token
X-Server-Group
X-Varnish-Beresp-TTL
TSSecure
SD-X-WS
WWW-Authenticate
Processtime
MS-CV
X-Ratelimit-Limit
Geoip-City
X-Varnish-Url
A
X-Aicache-OS
X-Geo
X-Wa
X-ABtesting
X-Flog
X-Hello
X-DataStream-Origin-MEX-Latency
X-DataStream-MidMile-RTT
X-Wix-Route-ID
X-Datadome
X-GRACE
X-Varnish-URL
PICS-Label
X-Cdn-Forward
X-WA
Dont-Set-Cookie
Cdn-Host
X-From-Cache
Cdn-Request-Time
Cdn
X-SRV
Node
X-Akamai-Request-ID2
X-Edge-Server
X-Auto-Login
Lfy
X-Gdpr
X-Amz-Cf-Pop
FSS-Proxy
FSS-Cache
Lb
X-Use-Magma
Ms-Operation-Id
X-RTag
DataCenter
Mime-Version
COMMERCE-SERVER-SOFTWARE
GeoIP-Country-Code
X-Sentry-ID
X-EC-Security-Audit
GeoIP-Latitude
X-UPSTREAM-Address
X-Gen-Id
X-APP
X-Nananana
X-FORWARDED-FOR
X-WR-MODIFICATION
Is-Session-Tracking
X-Cache-HT
GeoIP-City
X-Via-NSCOPI
Rt-Proxy-Cache
PageType
X-Check-Cacheable
X-PAGE-TYPE
X-Optimization
Get-Access-Time
X-Env
X-Fastly-Backend-Reqs
X-Load-Cache
Who
X-Cookie
X-Unique-Id
X-CACHE-KEY
X-Served-From
X-Cache-Id
X-Proxy-Server
Memcached
X-GDPR
X-Wix-Petri-Ex
X-Cache-Info
X-Bip
X-Thanos
X-Cache-FS-Status
X-Dynatrace-Js-Agent
X-Ibm-Trace
X-Ver
Ws
X-Meta-Tbi-Cache-Vertical
X-PJAX-URL
X-MP-GENERATED-AT
X-Request-Start
X-Swift-Error
Httpd-Identifier
Memory
Pics-Label
X-Be
X-NGINX-Cache
X-SVT-ORM-RULES
X-Cache-Ttl
Ohc-File-Size
X-SVT-ORM-VERSION
X-RateLimit-Reset
V-Cache
X-HS-Status
Group
X-B3-SpanId
X-Fe
Powered-By
X-Fastly-Cache-Hits
X-Path-Route
X-CDN-Pop-IP
Version
URI
GW-Server
X-Shard
UCS
X-CDN-Pop
X-ServedByHost
Cf-Ipcountry
X-Dw-Trace-Id
Amp-Access-Control-Allow-Source-Origin
X-ID
X-GZIP
X-User
X-P-T
Requestid
X-Bug-Bounty
Xet-Cookie
X-LiteSpeed-Cache-Control
X-VC
X-PF-Uncompressing
AGE-Hash
NX-Cache
X-SB
Serverid
X-Varnish-Info
Cache-Hits
X-Akamai-ERRuleID
N-Cache
X-CacheKey
CDN-Cache
Ohc-Response-Time
X-StackifyID
Fastly-Soc-X-Request-Id
Apicache-Version
Apicache-Store
CDN-Cache-Hit
X-Akamai-ERPolicy
X-Ratelimit-Remaining
CDN-Node
X-SD-PageType
X-ServerName
Https
If-Modified-Since
X-Goog-Meta-Goog-Reserved-File-Mtime
X-BE
X-Route-Name
X-Providence-Cookie
X-Grace-Duration
X-Flags
X-Litespeed-Cache-Control
X-RequestId
X-Info
X-Cache-Handler
X-Is-Crawler
X-Micro-Cache