Threat Level: green Handler on Duty: Didier Stevens

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
Content-Length
X-Frame-Options
Strict-Transport-Security
X-Content-Type-Options
Accept-Ranges
Last-Modified
CF-Cache-Status
Pragma
Link
CF-RAY
X-Powered-By
ETag
Expect-CT
X-XSS-Protection
Via
X-Cache
Age
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
P3P
X-UA-Compatible
X-Cache-Hits
X-Amz-Cf-Pop
X-Amz-Cf-Id
Referrer-Policy
X-Served-By
X-Xss-Protection
X-Varnish
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
Alt-Svc
X-Download-Options
X-Request-Id
X-AspNet-Version
Access-Control-Allow-Credentials
X-Runtime
X-FRAME-OPTIONS
X-Drupal-Cache
X-Adblock-Key
X-Request-ID
X-Check
X-Generator
Content-Security-Policy-Report-Only
X-Cache-Status
X-Permitted-Cross-Domain-Policies
X-Cacheable
X-DNS-Prefetch-Control
Timing-Allow-Origin
X-Iinfo
X-Template
X-Language
X-AspNetMvc-Version
Status
X-Content-Security-Policy
X-Buckets
Content-Encoding
Access-Control-Expose-Headers
X-CDN
Upgrade
Xkey
Access-Control-Max-Age
X-Drupal-Dynamic-Cache
Keep-Alive
X-Kinja-Server-Push
CF-Ray
X-Turbo-Charged-By
X-AH-Environment
X-Ua-Compatible
X-Age
X-Cache-Group
X-Via
X-Pass-Why
X-Backend
X-Envoy-Upstream-Service-Time
EagleId
X-Server
X-Robots-Tag
X-Amz-Request-Id
X-Amz-Id-2
X-Server-Powered-By
X-Page-Speed
X-Pingback
X-UA-Device
X-Proxy-Cache
X-Swift-CacheTime
X-Swift-SaveTime
X-Hacker
X-Nginx-Cache-Status
Request-Context
Ali-Swift-Global-Savetime
X-Varnish-Cache
Grace
Server-Timing
Feature-Policy
P3p
Cf-Railgun
X-Amz-Version-Id
X-LiteSpeed-Cache
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Device
X-Server-Id
X-Rq
Report-To
X-WebKit-CSP
EagleEye-TraceId
X-Ws-Request-Id
X-Host
X-Response-Time
X-Ac
X-OneAgent-JS-Injection
Request-Id
X-Cnection
X-Backend-Server
Content-Location
X-DataDome
X-Origin-Cache
X-Node
X-Cache-Lookup
X-Dns-Prefetch-Control
NEL
X-Readtime
X-Cloud-Trace-Context
X-Vhost
X-HW
X-Dispatcher
X-Application-Context
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Cdn
Allow
X-Clacks-Overhead
Surrogate-Control
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
X-Origin-Upstream-Status
X-Rack-Cache
X-DynaTrace
X-Country
Rating
Fusion-Content-Id
Fusion-Content-Source
Fusion-Template-Id
Fusion-Source
Fusion-Component-Id
X-Akam-SW-Version
X-FTR-Request-ID
X-Country-Code
X-Goog-Hash
Pinterest-Generated-By
X-Instart-Request-ID
X-Ruxit-JS-Agent
X-PC
Edge-Control
X-Vname
X-TtlSet
X-B3-TraceId
X-Varnish-TTL
X-Mod-Pagespeed
X-Url
X-MS-InvokeApp
Verso
SPRequestGuid
Accept-Ch
X-Powered-By-Plesk
X-D2id
X-Trace
X-TTL
X-ESI
X-VARITI-CCR
X-Server-Name
X-GitHub-Request-Id
Service-Worker-Allowed
X-SharePointHealthScore
Content-MD5
Pagespeed
Response
X-Sol
X-Middleton-Response
X-Use-Magma
X-GoogleNews-Bot
X-Kinja-Server
X-Kinja-Revision
X-Kinja
X-Kinja-Build
X-Exp-Id
X-Exp-Variant
X-Cdn-Fetch
Display
X-Middleton-Display
RTSS
X-Navigation-Version
SPIisLatency
SPRequestDuration
X-Vcache
X-Abt-Application-Version
X-Powered-CMS
X-Debug
Accept-Ch-Lifetime
X-Forwarded-Proto
X-Upstream
X-Cached
X-Vcap-Request-Id
X-Amz-Server-Side-Encryption
Public-Key-Pins
X-CST
Charset
DynaTrace
MS-Author-Via
X-Version
X-NF-Request-ID
X-Amz-Rid
Edge-Cache-Tag
Realpath
X-Px
X-DynaTrace-JS-Agent
MicrosoftSharePointTeamServices
Arr-Disable-Session-Affinity
X-Shard
TCN
X-Trafficlayer-App-Name
X-Trafficlayer-App-Scope
X-Ezoic-Cdn
X-Shield-Request-Id
X-MSEdge-Ref
X-SRCache-Fetch-Status
X-SRCache-Store-Status
Access-Control-Request-Method
X-Ser
X-Fastly-Request-ID
Pinterest-Version
X-Pinterest-Rid
S
X-Accel-Expires
Fastly-Restarts
X-TEC-API-ORIGIN
X-DIS-Request-ID
X-TEC-API-ROOT
X-TEC-API-VERSION
X-Client-IP
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Goog-Metageneration
X-Goog-Stored-Content-Length
Front-End-Https
X-XRDS-Location
X-Webapp-Samesite-None-Activated-N
X-Amz-Meta-S3cmd-Attrs
X-Recruiting
X-T
X-Id
X-Varnish-Age
X-Element-Page-Cache
X-Goog-Storage-Class
X-FTR-Backend
X-Country-Code-Real
X-FTR-Balancer
X-FTR-Backend-Server
X-FTR-Cache-Status
X-FTR-DC
Cache-Tag
X-FTR-Realm
X-Amzn-Trace-Id
X-Server-ID
X-B3-TraceId-Primal
X-Mrf-Item-Lastmod
Nginx-Cache
X-Mrf-Section-Lastmod
Mrf-Cache-Status
MRF-Tech
X-Dw-Request-Base-Id
X-Webkit-Csp
X-FTR-Expires
Fastcgi-Cache
X-Fastcgi-Cache
X-Content-Digest
X-Frontend
X-HS-Content-Id
X-HS-Cache-Config
X-HS-Hub-Id
NR-ENABLED
Powered
X-Hits
X-Correlation-Id
X-Hp-Webp
Alternate-Protocol
X-Kinsta-Cache
X-FTR-Cache-Host
X-Aspnetmvc-Version
X-Request-Processing-Time
X-Request-Received
X-Content-Type
X-Ttl
Server-Name
ServerID
X-Request-Handler-Origin-Region
X-HS-Combine-CSS
X-Microsite
X-N
PB-RID
PB-PID
TP-Cache
X-Cache-Hit
TP-L2-Cache
Arc-Version
X-Grace
X-Mobile-Rewrite
X-Rid
X-Akamai-Edgescape
Healthy
X-RateLimit-Remaining
X-Node-Name
X-Revision
X-Analytics
X-User-Agent
Backend-Timing
X-Forwarded-For
X-Pad
X-Content-Security-Policy-Report-Only
X-Logged-In
X-Zen-Fury
AMP-Access-Control-Allow-Source-Origin
X-Amz-Apigw-Id
X-Amzn-RequestId
X-Mobile-URL
X-LB-Cache
Server-Node
X-Varnish-Grace
X-Activity-Id
X-Az
X-Oneagent-Js-Injection
X-AppVersion
Accept-CH-Lifetime
Accept-CH
Cache-Status
X-Cached-By
X-Content-Options
X-GUploader-UploadID
X-NWS-LOG-UUID
X-B3-Sampled
X-F-Cache
Refresh
X-Geo-Country
X-Ruxit-Js-Agent
Upgrade-Insecure-Requests
X-IPLB-Instance
X-Type
Retry-After
X-Varnish-Backend
FilterID
X-Tumblr-Pixel
X-Tumblr-User
X-Tumblr-Pixel-0
X-App-Environment
X-FastCGI-Cache
X-Cache-2
Paypal-Debug-Id
X-Srv
X-Jobs
Accept-Charset
X-FB-Debug
Host
X-Request-Guid
X-Framework
X-Instance
X-PHP-Backend
X-Page-Id
X-Cluster
DC
Actual-Object-TTL
X-Debug-Info
X-AOL-HN
X-B
Access-Control-Allow-Method
Source
X-WebKit-CSP-Report-Only
X-ATG-Version
Cache
AR-ATIME
AR-PoweredBy
AR-CACHE
X-TT
X-Cache-Key
X-Cache-Age
X-Erf-Bev-Bev
Fastcgi-Useragent
X-Erf-Bev-Bev-Is-Generated
X-Seen-By
X-Git-Hash
MS-CV
X-Content-Powered-By
X-Via-JSL
Ar-Sid
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
X-PressLabs-Stats
X-B-Cache
X-Amz-Replication-Status
X-Cache-TTL
X-Signature
Host-Header
X-TA-CDN-Provider
X-Whom
X-Cache-Control
X-Wix-Request-Id
X-Origin-Server
X-Cache-Enabled
X-Response-Served-From
NGB
X-Daa-Tunnel
X-Mobile
X-UA
Xserver
Surrogate-Key
X-ATS-Timestamp
X-RequestSource
X-Tumblr-Pixel-2
X-Host-Name
Cache-Tv-Group
X-GeoIP
X-Tumblr-Pixel-1
Cleartype
X-FW-Server
X-FW-Serve
X-FW-Static
X-FW-Type
X-Hyper-Cache
X-FW-Hash
X-Cacheable-TTL
Filters
Payment
WPE-Backend
X-Cache-NE
Datacenter
Eomportal-Instance
X-Adobe-Content
X-Litespeed-Cache
X-Region
Frame-Options
X-Adobe-Loc
X-Handled-By
X-Drupal-Cache-Tags
X-Cache-Action
X-SERVER
X-EdgeConnect-Cache-Status
Webserver
X-TX-ID
X-Load-Cache
X-Esi
X-Kong-Proxy-Latency
X-XRDS-LOCATION
X-Kong-Upstream-Latency
X-Hostname
X-Cache-Rule
AR-Request-ID
X-Akamai-Transformed
X-Cache-Operation
From-Origin
X-Cache-TTL-Remaining
X-RemovedCookies
X-Edge-Location
X-NewRelic-App-Data
X-ProcessESI
X-UA-Device-Type
Ms-Operation-Id
X-RTag
Liferay-Portal
X-Cache-Server
X-Varnish-Hostname
X-Forwarded-Host
X-Oss-Server-Time
X-Oss-Request-Id
X-Oss-Storage-Class
X-Oss-Object-Type
X-Oss-Hash-Crc64ecma
X-ORACLE-APMCS-TAG
X-ORACLE-APMCS-REQUEST-ID
X-Varnish-Server
X-Yottaa-Optimizations
X-Rule
X-Yottaa-Metrics
X-Status
Country
X-Contextid
Odigeo-Trace-Id
X-Upgrade-Enabled
X-App-Server
X-UUID
X-ES-SERVER
X-BCube-Filmed-By
X-Path-Route
Load-Balancing
Meta-Geo
X-RN-RSRV
X-Cache-Var-Map
X-Cache-Var
DSUID
X-TT-TIMESTAMP
X-R9-Blue-Green-Version
X-Debug-Cache
X-EIG-Tracking-Id
X-CCM
Webcakes-Region
TWC-Privacy
DB-Nickname
Webcakes-App-Name
TWC-Locale-Group
TWC-GeoIP-LatLong
TWC-Device-Class
TWC-GeoIP-Country
X-VCT
X-Origin-Hint
X-From
X-Rocket-Nginx-Bypass
Release
TWC-Connection-Speed
Property-Id
Webcakes-App-Version
Selected-Fe
Origin-Cache-Control
X-Cache-Time
Mn-Server-Ip
Origin-Edge-Control
X-Cache-Host
X-Cache-Config
Azure-SiteName
Azure-RegionName
Azure-InstanceId
Azure-SlotName
Azure-Version
Fastly-SSL
X-Akamai-Request-ID
Cache-Tags
Cache-Name
L5d-Success-Class
X-Proxy-Build
X-Vgn-Hpd-Reason
X-Loop
X-OCL
X-Via-Fastly
X-IP
X-Drupal-Cache-Contexts
X-Viewer-Country
X-Origin
X-TNCMS
X-ServerID
X-Proto
S-Rt
X-PCL
X-Timing-Wait
X-Origin-Response-Time
X-Proxy
X-Hosted-By
X-Human
X-FireWall-Port
X-Pubstack
X-FW-Dynamic
X-Soup
X-FC-Vary-Parameters
X-Redis-Cache
X-Real-IP
X-Varnish-Hits
X-Cluster-Name
X-Generated
X-Content-Age
X-ProxyCache-Status
X-Locale
X-Section
X-Format
X-Site-Version
X-Labrador-Cache-Channel
Uber-Trace-Id
X-Web-Node
X-Rendered-As
X-Www-Served-By
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Xfnlog-Site
X-Akamai-Request-ID2
X-BYPASS-REASON
X-Backend-Name
X-ProxyCache-Key
Viewport
X-JoinUs
X-Is-Bot
X-Access
NGX
X-NWS-UUID-VERIFY
Ec-Rule-Version
Version
Decoy-Debug-Status
Decoy-Debug-Key
X-Varnish-Cache-Hits
X-Accel-Buffering
S-Cnection
Decoy-Debug-TTL
Server-Info
X-Time-Microsecs
X-Generated-By
X-Time
Tracecode
X-PHP-Host
X-Cache-Backend
X-PERF
X-ApacheServer
X-Info
X-Amzn-Remapped-Content-Length
X-Storage
X-Origin-TTL
X-Origin-CC
X-SaId
Akamai-GRN
X-URL
X-Geo
X-VCache
X-Presslabs-Stats
Rt-Fastcgi-Cache
X-WA-Info
Cteonnt-Length
X-Nginx-Cache-Key
X-App-Version
X-CF-Powered-By
GEO-INFO
Time
X-MServer
X-No-Session
X-Guploader-Uploadid
Cache-Key
Origin
X-Environment-Context
X-L-Path
X-Cache-Remote
X-FB-TRIP-ID
Access-Control-Request-Headers
Accept-Language
X-Tb
X-Tec-Api-Origin
X-Tec-Api-Root
X-APP-VERSION
X-Tec-Api-Version
X-GoCache-CacheStatus
X-Unique-Id
X-RateLimit-Limit
X-NCache
X-SayCDN-TTL
X-Say-TTL
X-Say-Cacheable
X-EC-Lua
X-Hit
Vix-Hermes-Req-Id
X-Backend-TTL
Cache-Hits
X-TIME
X-Sorting-Hat-PodId
X-Sorting-Hat-ShopId
X-Trace-Id
X-Alternate-Cache-Key
X-ShopId
X-Shopify-Generated-Cart-Token
X-Shopify-Stage
X-ShardId
X-B3-SpanId
X-Device-Type
X-RCS-CacheZone
Mime-Version
X-Tumblr-Pixel-3
X-CS
X-Dc
X-S
X-CDN-Forward
OT-Force-Account-Verify
X-Source
X-SS-Set-Cookie
X-CACHE-KEY
X-OVcl-Cache
X-OVcl
Srv
Xc-Version
Meta-Geo-Continent
Mobile-Detection-Method
Node
MD5-Digest
Machine
X-Application
X-Destination
X-Date
X-A-Dgt
Request-EU
Rt-Proxy-Cache
X-CF-Lambda-Version
Request-Country
Rendered-Blocks
User-Cache-Control
X-Region-Sid
X-Connection-Hash
X-D
X-Detected-As
Fastcgi-X-Cache-Version
X-Hl-Ver
Content-Style-Type
Cross-Origin-Window-Policy
X-VG-WebCache
X-Vdms-Version
X-VG-WebServer
X-ARC
Content-Script-Type
X-PAYTM-SRV-ID
IsBot
X-Magnolia-Registration
X-Processor
X-Cluster-Node
X-DPWN-IS-SECURE
X-G
X-External-Request-Id
X-Vtex-Processado-Em
X-Transaction
Apple-News-Services-Parsed-Url
X-Twitter-Response-Tags
X-Vtex-Remote-Cache
X-Accel-Expires-Debug
Apple-News-Services-Host
X-Server-Time
Arc-Country
Apple-News-Services-Request-Url
Apple-News-Services-Handled
X-Service
X-Session-Fingerprint
X-A-Wwc
X-Svr
X-SRCache-Key
X-A-Dcw
X-SIPLIST1
X-A
X-A-Ccd
X-A-Dam
X-CF-Lambda-Fn
X-ScT
X-Rewrite-Enabled
T-Server
X-Aed
X-Request-UUID
X-AIR-PT
Server-Host
X-Endurance-Cache-Level
X-B-Cookie
AsisCache
BehaviorPad-Version
X-Ah-Environment
Viewtype
VivaBuild
X-Rojux
X-S-Cookie
X-Trv-Group
X-Parent-Response-Time
ServerName
ServedBy
X-Level-Front-Cache
X-Instart-Isnd
X-IN-APIGATEWAYSSL
X-Core-Value
Thinkindot-Control
Thinkindot-CacheControl-Type
X-Cache-Bucket
Wxu-Next-Commit
Wxu-Next-Region
Wxu-Next-Hostname
Thinkindot-CacheControl
Server-Int
X-Generated-On
X-Hash
X-Dispatcher-Server
X-Dispatch
Served-By
X-CUA
X-IN-APIGATEWAY
X-Location
X-ND-Cache
Mail-Subject
X-Upstream-Ht
X-Upstream-Ct
X-Webstats-RespID
X-Thinkindot-L3
X-Via-NSCOPI
X-Reboot
X-Matched-Rule
Now
We-Hiring
X-Uri
X-CSRF-TOKEN
NtCoent-Length
X-SRV
Proxy-Connection
X-Cms-Context
X-Clientip
X-Compress-Hint
X-Rocket-Build-Number
X-User
X-Cache-Info
X-Request-URI
X-Clara-WADP
X-Cache-FS-Status
X-Wikidot-Backend
X-Up
X-CGP
X-Cdn-Srv
X-Request-Start
X-Reqid
X-SD-PageType
X-BBXSRF
X-SVT-ORM-VERSION
X-WADP-Cache
X-SVT-ORM-RULES
X-Backend-State
X-B3-Parentspanid
X-TrackingId
X-Azure-Ref-OriginShield
X-Thanos
X-We-Are-Hiring
X-Sucuri-Cache
X-Skip-Cache
X-C
X-Release
X-Scheme
X-S-Maxage
X-Server-IP
X-WebServer
X-Sigma-Backend
X-Sigma
X-Bip
X-Block-Status
X-Cache-Debug
X-RateLimit-Remaining-Second
X-Origin-Expires
X-Has-Esi
X-Origin-Date
X-Old-Content-Length
X-Hnp-Log
X-GeoIP-City
X-Geo-Header
X-VServer
X-Gen-Mode
X-Owner
X-Generation-Time
X-VG-TLSProxy
X-NX-Host
X-Key
X-Li-Fabric
X-Logging-Id
X-LI-UUID
X-JWT-State
X-Is-Gdpr
X-Ms-Version
X-Ms-Request-Id
X-Method
X-Irp-Debug
X-FW-Version
X-Fastly-Cache
X-Variation
X-Debug-Cache-Store
X-Proxy-Upstream
X-Debug-Cookies
X-Debug-Log
X-Qloud-Router
X-Debug-Cache-Fetch
X-Wikidot-Static-Cache
X-Li-Pop
X-RateLimit-Limit-Second
X-Debug-Cache-Expiry
X-Azure-Ref
X-VC-Cache
X-Distributor
X-Epic-Correlation-Id
X-Eu-Site
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
X-Distil-CS
X-Proxy-Cache-Status
X-Developers
X-Platform-Server
X-Planisys-CDN-TTL
X-Core-Mission
X-Amz-Meta-Cache-Control
X-Varnish-Beresp-Ttl
RNT-Machine
Content-Disposition
RNT-Time
SD-X-WS
X-Varnish-Beresp-Status
X-Auto-Login
Section-Io-Cache
Gh-Request-Id
Pramga
Memcached
Adler-Geo
Cache-Host
PFcat
Magicmarker
CDCHOST
Platform
L
X-Varnish-Beresp-Grace
X-Agile-Id
AKAMAI
HA-Ipaddr
X-Agile
X-Agile-Age
Ha-Gx-Prefs
Heartbleed
Web-Mar-Node
Is-Eu
Fastly-Soc-X-Request-Id
IBM-Web2-Location
Countrycode
W
Esi-Enabled
X-Cache-Grace
X-Nc
Cache-Provider
X-Generated-In
Kp-EeAlive
X-Policy
X-Trafficlayer-App-Version
X-LI-Proto
X-Cache-Id
Powered-By-ChinaCache
X-App-Name
Server-ID
X-Cache-URL
X-Swa-Ws
X-Cdn-Forward
X-Via-CDN
X-NodeID
X-MSEdge-Flight
X-MSEdge-Features
X-NC
X-Urbn-Site-Id
Cdnsip
X-Internal-Host
Cdncip
X-Urbn-Context-Path
X-ServiceProvider
Locale
True-Client-Country-4JS
V-Age
X-AK-Request-ID
Environment
Locid
X-Served-From
X-B3-Traceid
X-Req
X-Servername
X-B3-Spanid
X-HTML-Minification-Powered-By
X-GRACE
X-Lb-Id
X-Be
GEO-REGION-INFO
FNAC-ModuleRouting
X-Gamma-Serve
X-Newrelic-Synthetics
Hostname
X-Nginx-Cache
X-UnsetCookies
X-Sucuri-Id
X-Refresh
X-7Graus-Varnish-Cache-Control
CF-IPCountry
X-7Graus-Varnish-XKeys
X-FPC
X-IPS-LoggedIn
X-Render-Time
X-VHOST
X-Ratelimit-Remaining
X-Zone
X-NU-AKA-ACS-Version
ProcessTime
A
Tcn
X-Developer
X-Tb-Optimization-Total-Bytes-Saved
Geo-Info
X-MP-GENERATED-AT
X-Edge-O15-RID
X-Webkit-CSP
X-Sucuri-ID
X-Device-Os
X-Microcachable
X-GeoIP-Country-Code
X-Sn-Servicetimems
X-Cdn-Origin
X-Servedbyhost
X-Node-Id
X-Pjax-Url
X-Mode
X-LJ-Flow-ID
X-FORWARDED-FOR
Memory
X-VWS-Id
X-Pf-Uncompressing
X-AWS-Id
Request-Time
X-COUNTRY
Gannett-Cam-Experience-Id
X-CSRF-Token
TTL
Cf-Ipcountry
X-Correlation-ID
Geoip-Latitude
X-DC
X-Zipkin-Id
X-Proxied
Amp-Access-Control-Allow-Source-Origin
X-Routing-Service
GeoIp-Country-Code
X-Bc
CF-Cached-On
X-Pod
Pics-Label
X-Ratelimit-Limit
Cache-Cookie-Set-Lfrom
Cache-Cookie-Set-Idcheck
Cache-Cookie-Set-From
X-VCL-Version
Resin-Trace
PICS-Label
X-ZONE
X-Via-Edge
X-Vcl-Version
X-Via-SSL
M-TraceId
Group
GeoIP-Latitude
GeoIP-Country-Code
GeoIP-City
Cdn
HostName
X-Unique-ID
X-Request-Time
X-NODE
X-ECACHE
Host-ID
X-Cdn-Request-ID
Geoip-City
XServer
X-ElasticPress-Search
X-Instart-Info
X-Swift-Error
X-CLOUD-TRACE-CONTEXT
MIME-Version
X-Backend-Url
X-Backend-Host
Ttl
X-TH-Server
X-Var-Ttl
X-APP
Ohc-Cache-HIT
Backend-Name
HitType
X-PF-Uncompressing
X-Check-Cacheable
Ohc-File-Size
X-BC
X-NGINX-Cache
Pagetype
X-NGENIX-Cache
REQUESTUUID
Powered-By
URI
N-Cache
Lfy
X-UPSTREAM-Address
Cache-Prefix
Fly-Cache
X-ServedByHost
On-Server
X-PJAX-URL
X-Fastly-Country-Code
X-Fstrz
Fly-Request-Id
Media-Length
User-Agent
SRV
X-Varnish-Ttl
X-HostName
X-WR-MODIFICATION
X-Cache-Tag
X-Via-Ucdn
X-Worker
X-Tt-Trace-Tag
X-HS-Status
X-Aicache-OS
X-LiteSpeed-Cache-Control
X-Fetched-On
X-Cache-Miss-From
CDN
Who
FSS-Proxy
X-Sedo-Request-Id
X-Hp-Ccpa-Warning
FSS-Cache
X-WA
X-Tt-Trace-Host
Pragrma
AR-SID
X-BE
UCS
X-Server-W
X-NYM-Debug-Backend
Fastly-SWR
X-Fpc
X-Varnish-Cacheable
X-Varnish-URL
X-Rebelmouse-Cache-Control
X-LB-ID
X-Wa
Processtime
Fastly-SIE
X-Cache-Tags
X-GEO
X-LAGOON
X-Rebelmouse-Surrogate-Control
X-Cf-Powered-By
Debug
X-Store
X-Upstream-HT
X-Fastly-Backend-Reqs
X-Upstream-CT
Server-Cache-Control
X-Varnish-Authentication
X-ServerName
Server-Surrogate-Control
X-Cache-ASPX
X-Contensis-Viewer-Groups
X-Ua
X-Ftr-Cache-Host
X-Protected-By
X-Varnish-Beresp-TTL
X-Akamai-ERRuleID
Country-Code
Fastly-Backend-Name
X-Akamai-ERPolicy
Location
X-TT-LOGID
X-BACKEND-TTL
Xet-Cookie
X-Apw-Access-Object
X-VC
X-Apw-Access-Action
X-Apw-Access-Token
X-Apw-Hits
WP-Super-Cache
X-Gen-Id
X-Li-Proto
SID
X-Fastly-Cache-Hits
Thinkindot-Cache-Type
X-Dw-Trace-Id
X-Amzn-Remapped-Connection
X-Amzn-Remapped-Date
Application
Server-Id
X-Nananana
XxX-Cache-Status
Cneonction
NnCoection
X-GDPR
Product
X-Request-Url
X-SB