Threat Level: green Handler on Duty: Brad Duncan

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
X-Frame-Options
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
X-XSS-Protection
Accept-Ranges
Expect-CT
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
CF-Ray
X-Download-Options
X-Xss-Protection
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Request-Id
X-Adblock-Key
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Permitted-Cross-Domain-Policies
X-Request-ID
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-DNS-Prefetch-Control
X-Generator
X-Check
X-Cache-Status
X-Cacheable
Timing-Allow-Origin
X-Envoy-Upstream-Service-Time
X-Iinfo
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Access-Control-Expose-Headers
Status
Upgrade
X-CDN
X-AspNetMvc-Version
Access-Control-Max-Age
X-Dns-Prefetch-Control
X-Via
Server-Timing
Request-Context
X-Robots-Tag
X-Turbo-Charged-By
X-UA-Device
X-Amz-Request-Id
X-Cache-Group
X-Amz-Id-2
EagleId
X-Backend
X-AH-Environment
X-Proxy-Cache
P3p
Keep-Alive
X-Server
X-Ua-Compatible
X-Ws-Request-Id
X-Age
Cf-Edge-Cache
Host-Header
X-Hacker
X-Vhost
X-Server-Powered-By
X-Rq
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
Allow
X-Swift-SaveTime
X-Swift-CacheTime
X-OneAgent-JS-Injection
Ali-Swift-Global-Savetime
X-LiteSpeed-Cache
X-Page-Speed
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
Cf-Apo-Via
X-Device
X-WebKit-CSP
Cf-Railgun
Accept-CH
X-Aws-Lambda-Call-Status
X-Node
X-Pingback
X-Server-Id
X-Host
X-Ruxit-JS-Agent
EagleEye-TraceId
Surrogate-Control
X-Nginx-Cache-Status
X-Akam-SW-Version
X-Readtime
Request-Id
X-Backend-Server
X-Content-Security-Policy-Report-Only
X-HW
X-Cache-Lookup
X-Cache-Spec
Accept-Ch-Lifetime
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Trace
X-Response-Time
X-Cloud-Trace-Context
X-Application-Context
Permissions-Policy
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
X-Edge
X-WebKit-CSP-Report-Only
X-Mod-Pagespeed
Content-Location
X-Mcache
Accept-CH-Lifetime
X-MS-InvokeApp
X-Content-Type
X-Country
X-Url
X-Litespeed-Cache
X-Clacks-Overhead
X-TtlSet
X-PC
X-Vname
X-CST
X-Midtier
X-Amz-Server-Side-Encryption
Rating
RTSS
Cache-Tag
X-ESI
X-Vcap-Request-Id
X-D2id
X-Rack-Cache
X-Element-Page-Cache
X-Use-Magma
X-Exp-Id
Origin-Trial
X-Exp-Variant
X-Cdn-Fetch
X-Kinja
X-Kinja-Build
X-Kinja-Revision
X-Kinja-Server
X-GoogleNews-Bot
Verso
X-VARITI-CCR
X-Server-Name
X-ECACHE
X-Ac
X-GitHub-Request-Id
Service-Worker-Allowed
X-Powered-By-Plesk
X-Cnection
X-Amz-Rid
X-SharePointHealthScore
SPRequestGuid
X-Client-IP
X-Navigation-Version
X-Ttl
Xkey
X-Abt-Application-Version
Edge-Control
SPRequestDuration
SPIisLatency
X-Cache-TTL
X-Upstream
Arr-Disable-Session-Affinity
X-B3-TraceId
X-Cached
X-Mg-S
X-Dw-Request-Base-Id
X-Instrumentation
X-Browser-Type
X-Erf-Bev-Bev
X-Erf-Bev-Bev-Is-Generated
X-Server-Lifecycle-Phase
X-Kraken-Loop-Name
X-Varnish-TTL
X-NWS-LOG-UUID
X-Webkit-Csp
X-FastCGI-Cache
X-Px
X-Middleton-Display
X-Sol
Pagespeed
Display
X-SRCache-Fetch-Status
X-NF-Request-ID
Accept-Ch
X-SRCache-Store-Status
X-Forwarded-For
Access-Control-Request-Method
X-Cache-Key
Edge-Cache-Tag
X-Country-Code
X-Correlation-Id
X-Goog-Hash
X-Powered-CMS
X-Ser
Content-MD5
X-Id
AR-SID
AR-Request-ID
AR-PoweredBy
Front-End-Https
X-Ratelimit-Limit
AR-CACHE
AR-ATIME
Public-Key-Pins
TCN
X-Version
X-HP-Webp
X-Jurisdiction
X-HP-Trace-Id
X-Amzn-Trace-Id
X-MSEdge-Ref
X-Content-Digest
X-T
X-Recruiting
X-RateLimit-Remaining
X-Middleton-Response
Response
X-Accel-Expires
TP-Cache
TP-L2-Cache
X-Shield-Request-Id
MicrosoftSharePointTeamServices
S
Cache-Status
Nginx-Cache
X-XRDS-Location
X-Daa-Tunnel
X-Request-Processing-Time
X-Request-Received
X-HS-Combine-CSS
X-HS-Cache-Config
X-HS-Content-Id
X-HS-Hub-Id
Server-Node
X-Fastly-Request-ID
Cache-Tags
Cross-Origin-Opener-Policy
MRF-Tech
Mrf-Cache-Status
X-B3-TraceId-Primal
X-Distributor
X-Hits
X-Ratelimit-Remaining
X-Kinsta-Cache
X-Edge-Location-Klb
X-LB-Cache
X-Fastcgi-Cache
X-Origin-Server
X-PressLabs-Stats
X-Ua-Browser
X-TEC-API-ROOT
X-Ratelimit-Reset
X-Ezoic-Cdn
X-TEC-API-ORIGIN
X-TEC-API-VERSION
Alternate-Protocol
Fastcgi-Cache
Filterid
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Grace
X-LLID
X-Frontend
X-Request-Handler-Origin-Region
X-Microsite
X-Rid
X-DIS-Request-ID
Server-Name
X-Hostname
X-FB-Debug
X-Logged-In
Healthy
X-Geo-Country
X-Varnish-Backend
X-Git-Hash
Cleartype
X-NGENIX-Cache
X-Www-Served-By
Realpath
X-Debug-Info
X-Page-Id
X-Load-Cache
X-Cluster-Name
Payment
X-Protected-By
DC
X-Forwarded-Proto
MS-Author-Via
Access-Control-Allow-Method
Content-Disposition
X-Origin-Cache
X-ASPNET-VERSION
X-ECache
X-DataDome
X-B3-Sampled
Charset
X-GUploader-UploadID
X-Goog-Metageneration
X-Upgrade-Enabled
X-TTL
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
X-AppVersion
X-Activity-Id
X-Az
X-Proxy
X-Seen-By
Count-Hit
X-F-Cache
X-Amz-Meta-S3cmd-Attrs
X-Amz-Replication-Status
X-Times
Cross-Origin-Resource-Policy
X-Azure-Ref
Paypal-Debug-Id
X-Whom
X-Fb-Rlafr
X-Revision
X-B
X-Akamai-Edgescape
X-Type
Surrogate-Key
X-Contextid
X-App-Environment
Viewport
Accept-Charset
X-Route-Name
X-Aspnet-Duration-Ms
X-Flags
X-Providence-Cookie
X-Request-Guid
X-Is-Crawler
X-Cache-Age
X-Varnish-Server
X-B3-Traceid
Retry-After
X-Wix-Request-Id
X-TT
X-Hosted-By
X-Aspnetmvc-Version
X-Signature
X-B-Cache
X-Language
X-DynaTrace
X-Envoy-Decorator-Operation
X-Cache-Control
X-App-Server
X-Source
X-Mobile
Amp-Access-Control-Allow-Source-Origin
X-Magnolia-Registration
X-Varnish-Grace
X-Oracle-Dms-Ecid
X-Oracle-Dms-Rid
X-Goog-Storage-Class
X-Goog-Generation
X-Goog-Stored-Content-Length
X-Goog-Stored-Content-Encoding
X-VCache
Version
Host
WPO-Cache-Status
WPO-Cache-Message
Referer-Policy
Refresh
X-XRDS-LOCATION
X-N
X-Server-ID
X-HTML-Minification-Powered-By
X-Cache-Rule
X-Tumblr-Pixel-0
X-Varnish-Age
X-Tumblr-User
X-Tumblr-Pixel
X-Tumblr-Pixel-1
X-Original-Request-Id
X-Amz-Apigw-Id
Access-Control-Request-Headers
X-Amzn-RequestId
X-Cache-Time
X-Response-Served-From
X-Cache-Status-Check
X-EdgeConnect-Cache-Status
X-Rule
Ms-Operation-Id
X-Jobs
X-RTag
X-User-Agent
X-UUID
X-G
X-Framework
Protected
SD-X-WS
X-Cacheable-TTL
X-Content-Powered-By
MS-CV
X-Cache-Grace
X-Trace-Id
X-FW-Dynamic
X-FW-Hash
X-Environment-Context
X-Backend-Name
From-Origin
X-FW-Serve
X-Device-Type
X-FW-Server
X-L-Path
X-RemovedCookies
X-FW-Version
X-FW-Type
X-FW-Static
Section-Io-Cache
X-ProcessESI
X-Page-View
VIX-Pulpo-Upstream-Status
GEO-INFO
X-Status
Akamai-GRN
VIX-Pulpo-Node
CDN-RequestId
NGB
X-Tt-Trace-Tag
X-Tt-Trace-Host
X-Akamai-Request-ID2
X-Adobe-Content
X-Cache-Expired-At
X-Adobe-Loc
X-Region
X-Is-Bot
X-NYM-Debug-Backend
X-Http-Reason
X-Instance
X-Varnish-Ttl
X-Rendered-As
X-Drupal-Cache-Contexts
X-Drupal-Cache-Tags
Front
X-Nginx-Cache
X-Servername
Url
X-Unique-Id
X-Fastly-Request-Id
X-COUNTRY
Pinterest-Generated-By
Pinterest-Version
X-Pinterest-Rid
Accept-Language
Liferay-Portal
X-Content-Options
SRV
X-Debug-IsConnected
Fastly-SIE
X-Debug-IsPreview
Fastly-SWR
X-Template
Backend
X-CDN-Forward
X-Zen-Fury
X-Cache-Hit
X-Air-Source
X-Air-Hostname
X-Yottaa-Metrics
X-Air-Trace-Id
X-Yottaa-Optimizations
X-RateLimit-Limit
X-Time
X-Newrelic-App-Data
X-DynaTrace-JS-Agent
Country
X-Mode
Content-Secure-Policy
X-Rocket-Nginx-Serving-Static
X-Cache-Operation
X-Uri
Node
X-Cache-Server
X-Content-Age
X-Generation-Time
Webserver
X-IPS-LoggedIn
X-Amzn-Remapped-Content-Length
X-RN-RSRV
Onion-Location
X-Proxy-Cache-Info
X-Rewrite-Enabled
X-Edge-Location
Filters
Meta-Geo
X-UPSTREAM-Address
X-Tumblr-Pixel-2
S-Rt
Azure-SlotName
X-Web-Node
Azure-Version
Uber-Trace-Id
CF-IPCountry
Selected-Fe
Cache-Hits
X-Locale
Azure-SiteName
X-Tumblr-Pixel-3
Azure-InstanceId
X-Tb
X-Timing-Wait
Azure-RegionName
X-PHP-Backend
X-ARC
X-Proxy-Build
X-Cache-Action
Countrycode
X-Ms-Request-Id
Cache-Name
X-Cms-Context
X-Labrador-Cache-Channel
WP-Super-Cache
X-BYPASS-REASON
X-PHP-Host
X-Ms-Version
X-Skip-Cache
X-Ua
X-Proto
X-Sucuri-ID
X-Soup
X-ProxyCache-Status
X-ProxyCache-Key
X-Sucuri-Cache
X-Site-Version
X-Via-Fastly
X-SayCDN-TTL
X-Say-Cacheable
X-Origin-Date
X-Server-W
X-Say-TTL
X-Reqid
X-Proxy-Cache-Status
TWC-Privacy
X-Origin-Hint
X-Routing-Service
X-Handled-By
Webcakes-App-Version
X-Forwarded-Host
TWC-Locale-Group
TWC-GeoIP-LatLong
X-Sql-Count
X-Zipkin-Id
Property-Id
ServerID
TWC-Connection-Speed
TWC-GeoIP-Country
TWC-Device-Class
Webcakes-Region
Webcakes-App-Name
X-Debug
X-Real-IP
X-Cluster-Node
X-Extlb
X-Proxied
X-Sql-Duration-Ms
X-Format
X-Access
X-Cache-Host
X-UA-Device-Type
X-Varnish-Beresp-Grace
X-VC-Cache
X-Section
Cache-Tv-Group
ServedBy
X-FB-TRIP-ID
X-IPLB-Instance
X-Adobe-Source
X-R9-Blue-Green-Version
X-VWS-Id
X-LJ-Flow-ID
X-AWS-Id
X-LAGOON
X-SaId
X-IPLB-Request-ID
X-Optimistic-Header
X-JoinUs
Web-Mar-Node
DB-Nickname
Cross-Origin-Window-Policy
X-App-Version
X-Cache-TTL-Remaining
X-No-Session
X-Detected-As
X-Urbn-Site-Id
Mn-Server-Ip
X-Urbn-Context-Path
X-Cluster
Apigw-Requestid
Locale
X-GeoCode
X-GeoCountry
Fastcgi-Useragent
X-LSADC-Cache
X-WP-CF-Super-Cache-Cache-Control
X-WP-CF-Super-Cache
X-Node-Name
X-Ruxit-Js-Agent
X-Xfnlog-Site
X-Director
X-Tec-Api-Root
Mime-Version
X-Tec-Api-Version
X-Tec-Api-Origin
Source
Upgrade-Insecure-Requests
X-Tt-Logid
Frame-Options
X-Varnish-Hits
X-TIME
X-Oneagent-Js-Injection
X-GEO
CDN-Cache
CDN-RequestCountryCode
CDN-EdgeStorageId
X-Generated-By
X-Hl-Ver
CDN-PullZone
CDN-CachedAt
CDN-Uid
X-Buckets
Fastly-Drupal-HTML
X-Varnish-Cache-Hits
X-Mg-Request-UUID
X-Request-Time
Xet-Cookie
X-FireWall-Port
Load-Balancing
X-RM-Cache-TTL
X-Redis-Cache
X-Varnish-Hostname
X-ServerID
X-SRV
X-Origin-TTL
X-Datadog-Sampled
X-Datadog-Parent-Id
X-Datadog-Sampling-Priority
X-Datadog-Trace-Id
X-Origin-CC
X-Loop
X-Api-Version
X-TA-CDN-Provider
X-Cache-Debug
X-URL
CF-Cached-On
X-Akamai-Transformed
X-Sorting-Hat-ShopId
X-Storefront-Renderer-Rendered
X-Tx-Id
X-Served-From
X-Sorting-Hat-PodId
X-Alternate-Cache-Key
X-ShardId
X-Shopify-Stage
X-ShopId
X-Pubstack
X-Storage
X-Pass-Why
X-Endurance-Cache-Level
X-Newrelic-Synthetics
Xserver
X-Request-Host
X-Restarts
X-Service
X-Location
X-Provided-By
Server-Info
X-External-Request-Id
X-Ec-Fail
X-Ec-GeoHdr
BehaviorPad-Version
Surrogated-Key
A
X-Epic-Correlation-Id
X-A-Dam
TDXMobile
X-Httpd
X-A-Ccd
X-INCAP-ABP
X-A
X-Level-Front-Cache
WWW-Authenticate
Thinkindot-Control
Thinkindot-CacheControl-Type
T-Server
X-Generated-On
X-Hash
Cache-Host
Thinkindot-CacheControl
X-Gdpr
X-Developer
MD5-Digest
Memcached
Meta-Geo-Continent
X-Cache-Date
X-Cache-Info
Lang
X-Cache-NE
Rendered-Blocks
Release
Ngx.Var.Host
NM-Fastcgi-Cache
X-Application
X-B-Cookie
X-Bc-Bl
Origin
X-BCube-Filmed-By
Redirect-Candidate
Odigeo-Trace-Id
X-Bip
X-Cdn-Origin
Host-ID
X-A-Wwc
Server-Host
DCR-Processing-Time-Ms
Sslversion
DCR-Decision-By
Candidate-Md5Url
X-Destination
X-A-Dgt
X-D
X-CUA
X-Conf
Gannett-Cam-Experience-Id
X-CMSURLCustom
X-Core-Mission
X-Akamai-Device-Characteristics
X-Aed
DSUID
Edge-Cache
X-A-Dcw
X-Men
X-Origin-Time
X-SRCache-Key
X-Sn-Servicetimems
X-SVT-ORM-RULES
X-Test
X-TIM-N
X-Thinkindot-L3
X-Thanos
X-Sigma-Backend
X-Sigma
X-Rojux
X-Rocket-Build-Number
X-Loc
X-S
X-S-Cookie
X-ScT
X-Processor
X-S-Maxage
X-Origin
X-SVT-ORM-VERSION
X-We-Are-Hiring
Xc-Version
X-Vdms-Path
X-CSRF-Token
X-Vdms-Version
X-Mobile-URL
X-Nyt-Route
X-Mid
X-TNCMS
X-WP-CF-Super-Cache-Active
X-CacheTTL
X-Server-IP
X-SD-PageType
Is-Eu
X-Scale
X-Worker
Gh-Request-Id
Fastly-GeoIP-CountryCode
X-Date
Tube-Return
X-DefElseHash
X-DefHash
Tube-Got-Results
Tube-Got-Eval
Fastly-Backend-Name
X-Response-By
Tube-Get-Contents
X-Correlation-ID
Mail-Subject
Platform
X-Auto-Login
X-BBC-Edge-Cache-Status
X-Varnishpool
X-Var-Ttl
X-Variation
X-Varnish-CookieINHashed-On
Req-Svc-Chain
X-Varnish-CookieHashed-On
X-Air-Pt
X-Ad-Defer-Variation
X-Accel-Expires-Debug
X-Slack-Backend
X-Varnish-Remaining-TTL
Magicmarker
X-Cache-Id
X-Slack-Shared-Secret-Outcome
X-Vmg-Version
Country-Code
X-CACHE-AGE
X-Cache-Bucket
X-VServer
X-Req
X-Org
X-Origin-Expires
X-Geo-Header
X-GeoIP
X-GeoIP-City
X-Gamma-Serve
X-Origin-Response-Time
X-Esi-Check
X-Platform
X-Fastly-Backend
X-Fastly-Cache
Cmstype
X-Gzip
X-Has-Esi
Section-Io-Origin-Time-Seconds
Section-Io-Origin-Status
Section-Origin-Responded
X-JWT-State
We-Hiring
Section-Io-Id
X-Is-Gdpr
X-Node-Id
X-HS-Content-Campaign-Id
X-Human
X-Mvc-Supplant-Cachable
Adler-Geo
X-Fetched-On
Click-Count-Action-Start
X-Platform-Router
CacheControlHeader
X-Dispatcher-Server
AKAMAI
C-Via
X-Pool
Cache-Key
Click-Count-Error
X-Ec-Custom-Error
X-Dispatcher-Number
X-Platform-Cluster
X-Region-Sid
Cmsid
CloudFront-Viewer-Country
X-Platform-Processor
HostName
Environment
X-Instance-Name
X-Core-Value
X-Developers
X-Nginx-Cache-Key
X-Mly-Id
Expect-Staple
X-Release
Web-Mar-Region
X-Accel-Buffering
X-Wix-Viewer-Type
X-WA-Info
X-WADP-Cache
X-Qloud-Router
X-Irp-Debug
X-GeoIP-Country-Code
X-Owner
X-FC-Vary-Parameters
X-DPWN-IS-SECURE
X-Fmm-Version
X-Planisys-CDN-Cache
X-Cache-FS-Status
X-Planisys-CDN-TTL
X-Cache-Tags
X-Planisys-CDN-Rules
X-Forwarded-Site
X-Frame-Option
X-Varnish-Beresp-Status
X-GeoIP-Region-Code
X-NodeID
X-Clara-WADP
X-Ckpd-Fst-Backend
X-Cdn-Srv
X-V-Cache
X-Azure-Ref-OriginShield
X-Device-Os
X-App
On-Server
Origin-CC
Origin-EX
X-Varnish-Beresp-Ttl
Kp-EeAlive
Canary
Datacenter
X-Vcl-Version
Producers
Machine
State
Ssr
Vix-Hermes-Req-Id
X-Via-CDN
Wxu-Next-Region
Sever-Int
Locid
X-HN
X-Hnp-Log
Wxu-Next-Hostname
Srvid
X-Minions-Version
X-SB
Wxu-Next-Commit
Apple-News-Services-Request-Url
Apple-News-Services-Parsed-Url
Apple-News-Services-Host
Apple-News-Services-Handled
Cache-Provider
User-Cache-Control
X-NCache
X-FL-QIT-DEBUG
X-Gen-Mode
X-FL-EDGE
L
X-Op-Id-All
X-VarnishDD-TTL
X-Platform-Server
PFcat
X-VG-TLSProxy
X-Request-Start
X-Block-Status
X-Zone
X-Old-Content-Length
X-Aicache-OS
Server-Hostname
NGX
Server-Ext
X-Via-SSL
X-Via-Edge
X-Parent-Response-Time
Edge-Copy-Time
X-Ua-Device
CDCHOST
X-Csrf-Jwt
X-From
X-Eu-Site
X-Cache-Remote
X-Mvc-Supplant-OutputCached
X-Nananana
L5d-Success-Class
HA-Ipaddr
X-Microcachable
X-CGP
Fastly-SSL
Ha-Gx-Prefs
X-VC
X-Webkit-CSP-Report-Only
X-LB-NoCache
X-B3-Spanid
X-Up
X-Refresh
X-Cache-Enabled
X-Debug-Cache-Store
X-Debug-Cache-Fetch
X-RCS-CacheZone
Env
X-Cache-Backend
X-Tb-Optimization-Total-Bytes-Saved
X-Dc
X-DC
Pics-Label
X-Lambda-Id
X-VCT
Decoy-Debug-Key
Decoy-Debug-Status
X-ND-Cache
X-Cached-By
X-Via-Poph
X-Via-Popn
X-Via-Popv
GeoIP-Latitude
Decoy-Debug-TTL
Cluster
X-Generated-In
X-Presslabs-Stats
Sid
NtCoent-Length
X-B3-SpanId
X-Trace-ID
X-Render-Time
X-Edge-Pop
X-NWS-UUID-VERIFY
X-HS-Status
Cache
CPC-Cache
CPC-Age
VNS-Age
VNS-Cache
X-Tid
X-Vtex-Remote-Cache
AMP-Access-Control-Allow-Source-Origin
SID
X-Upstream-Ct
X-Upstream-Ht
X-Cs
X-CCDN-Origin-Time
X-Hcs-Proxy-Type
Fastly-Drupal-Html
X-HA-Backend
X-CCDN-CacheTTL
Memory
Time
X-Webkit-CSP
X-Cache-Type
X-Servedbyhost
X-NewRelic-App-Data
X-LB-ID
X-TH-Server
X-DataCenter
X-Srv
X-Vgn-Hpd-Variations-Key
Svr
X-Esi
X-Vgn-Hpd-Cached
X-Vgn-Hpd-Ssi
X-Via-JSL
X-AIR-PT
X-ATG-Version
GeoIp-Country-Code
X-Wa
X-Nc
X-Client-Ip
Server-ID
X-Cache-ASPX
X-Check-Cacheable
X-CLOUD-TRACE-CONTEXT
X-Varnish-Authentication
X-Contensis-Viewer-Groups
Cdn
Srv
True-Client-IP
X-Vc
X-ZONE
Uri
X-RateLimit-Limit-Second
X-PAYTM-SRV-ID
X-MP-GENERATED-AT
X-CF-Lambda-Version
X-RateLimit-Remaining-Second
X-Fpc
X-CF-Lambda-Fn
Esi-Enabled
X-Amz-Meta-Cb-Modifiedtime
X-NGINX-Cache
XkeyRZ
X-Proxy-CacheRZ
Hostname
X-Varnish-Beresp-TTL
X-CS
X-Udemy-Cache-App-Namespace
XServer
X-Nf-Request-Id
N-Cache
M-TraceId
X-CDN-Cache-Status
X-Wikidot-Backend
X-Wikidot-Static-Cache
X-CACHE-KEY
X-Gateway-Cache-Key
X-Gateway-Cache-Status
Resin-Trace
X-API-Version
Cdnsip
Cdncip
X-AK-Request-ID
X-Gateway-Request-Id
X-CSRF-TOKEN
X-Gateway-Skip-Cache
YJS-ID
X-Datadome
X-EC-Lua
Lb
X-FPC
OT-Force-Account-Verify
X-Orig-Expires
X-Shop-Environment
X-Tenant
X-Forwarded-Path
X-Bl-Debug
RNT-Machine
RNT-Time
X-Via-NSCOPI
X-MSEdge-Features
X-MSEdge-Flight
X-Fastly-Country-Code
True-Client-Ip
X-TX-ID
Eomportal-Instance
X-Policy
X-B3-Trace-ID
X-App-Name
Request-ID
CDN
Server-Id
X-Service-Response-Time
X-APP-VERSION
Sm-Log-Id
Path
X-Cache-Ttl
Ngx-Var-Key
X-Micro-Cache
X-Logging-Id
GeoIP-Country-Code
X-WA
IsBot
X-Vcache
X-SIPLIST1
X-NC
Hit
X-Accel-Version
X-Lb-Id
X-Git-Commit
X-Container-Uri
X-MCACHE
X-Cache-NGX
X-Cdn-Diag
X-Datacenter
X-Ha-Backend
LB
X-VCL-Version
X-Request-URI
X-ServedByHost
X-Info
HIT
X-RateLimit-Reset
X-Edge-POP
X-Cdn-Forward
Cross-Origin-Opener-Policy-Report-Only
Pramga
X-LiteSpeed-Cache-Control
X-Tncms
RATING
X-Cdn-Cache-Status
Location
X-SERVER-NAME
X-Geo
X-Akamai-Pragma-Client-IP
X-Acquia-Purge-Cdn-Unconfigured
V-Age
X-Pod-Name
XM
X-Srcache-Fetch-Status
Geoip-Latitude
FSS-Cache
X-Srcache-Store-Status
X-Snapshot-Date
Ohc-File-Size
X-VG-WebCache
Timeexpire
Tcn
X-TT-LOGID
True-Client-Country-4JS
Epwk-X-Cache
Yjs-Id
ENV
X-Clientip
Req-ID
CDN-RequestPullCode
CDN-RequestPullSuccess
X-Via-PopN
X-Serial
X-Lb-Nocache
X-LiteSpeed-Tag
X-Via-PopV
X-Via-PopH
X-Ctl-Mach
X-Rebelmouse-Cache-Control
X-Rebelmouse-Surrogate-Control
X-Wp-Cf-Super-Cache-Cache-Control
X-Iauth-Set-Uid
X-Wp-Cf-Super-Cache
X-HostName
X-Oss-Hash-Crc64ecma
X-Hyper-Cache
X-Oss-Server-Time
Servername
Proxy-Connection
X-Fastly-Backend-Reqs
X-Oss-Request-Id
X-Cdn-Request-ID
X-Cache-Expires
X-Oss-Object-Type
X-Amz-Meta-Opti
X-Dw-Trace-Id
X-Oss-Storage-Class
Warning
X-M-Log
X-M-Reqid
X-Acquia-Purge-Tags
X-UP
X-RAMCache
X-Acquia-Site
X-Acquia-Application-UUID
Cneonction
W
WZWS-RAY
X-Acquia-Application-Trace
Ec-Rule-Version
X-B3-Parentspanid
X-Qnm-Cache
Content-Script-Type
Content-Style-Type
X-Swift-Error
X-F-Status
X-Lsadc-Cache
X-MiniProfiler-Ids
CountryCode
Ohc-Cache-HIT
PICS-Label
X-WP-CF-Super-Cache-Cookies-Bypass
X-Akamai-ERPolicy
X-Akamai-ERRuleID
MIME-Version
X-B3-ParentSpanId
X-IPS-Cached-Response
X-Moov-T
X-Moov-Xdn-Version
X-Scheme
My-App
Ngx
X-Webstats-RespID
X-Litespeed-Cache-Control
X-Fastly-Cache-Hits
X-Th-Server
X-Cache-Ngx
X-Mg-Cache