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