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