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