Threat Level: green Handler on Duty: Guy Bruneau

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
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Expect-CT
Accept-Ranges
Pragma
X-Powered-By
X-XSS-Protection
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
Alt-Svc
X-Cache-Hits
X-UA-Compatible
P3P
X-Xss-Protection
X-Served-By
CF-Ray
X-Download-Options
X-Timer
Access-Control-Allow-Headers
X-Request-Id
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
Access-Control-Allow-Credentials
X-Permitted-Cross-Domain-Policies
Content-Security-Policy-Report-Only
X-AspNet-Version
X-Runtime
X-Drupal-Cache
X-Generator
X-Cache-Status
X-Check
X-Request-ID
X-Cacheable
X-Envoy-Upstream-Service-Time
X-DNS-Prefetch-Control
Timing-Allow-Origin
X-Iinfo
X-FRAME-OPTIONS
X-Dns-Prefetch-Control
X-Drupal-Dynamic-Cache
Feature-Policy
X-Content-Security-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
Server-Timing
X-XSS-PROTECTION
Access-Control-Max-Age
X-Amz-Request-Id
Request-Context
X-Amz-Id-2
X-Turbo-Charged-By
X-AH-Environment
X-Via
X-Robots-Tag
X-Backend
X-Cache-Group
P3p
Cf-Edge-Cache
Keep-Alive
Host-Header
X-Proxy-Cache
X-Hacker
X-Server
X-UA-Device
X-Rq
X-Server-Powered-By
X-Age
Allow
X-Vhost
X-Varnish-Cache
X-Ws-Request-Id
EagleId
X-Dispatcher
X-Amz-Version-Id
Grace
X-LiteSpeed-Cache
Cf-Apo-Via
Nel
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Page-Speed
Cf-Railgun
X-Device
EagleEye-TraceId
X-Aws-Lambda-Call-Status
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
Accept-CH
X-Pingback
X-Host
X-Node
X-WebKit-CSP
X-Server-Id
X-OneAgent-JS-Injection
X-Backend-Server
Surrogate-Control
X-CST
X-Nginx-Cache-Status
X-Readtime
X-Akam-SW-Version
X-Cache-Lookup
Permissions-Policy
X-Content-Security-Policy-Report-Only
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
Request-Id
X-Application-Context
X-Nginx-Upstream-Cache-Status
X-Cloud-Trace-Context
X-Trace
X-Response-Time
X-Edge
Accept-CH-Lifetime
X-HW
Accept-Ch-Lifetime
X-Ua-Compatible
Content-Location
X-Mod-Pagespeed
X-Clacks-Overhead
X-Url
X-Midtier
X-Ruxit-JS-Agent
X-ECACHE
X-Litespeed-Cache
Rating
X-Oneagent-Js-Injection
X-ESI
X-Mcache
X-Amz-Server-Side-Encryption
X-Country
Xkey
X-Upstream
X-Vcap-Request-Id
X-Vname
X-TtlSet
X-PC
Cache-Tag
X-D2id
X-MS-InvokeApp
X-Rack-Cache
X-Exp-Id
X-Cdn-Fetch
X-Element-Page-Cache
X-Exp-Variant
X-Kinja-Server
X-Use-Magma
X-GoogleNews-Bot
X-Kinja-Revision
X-Kinja
X-Kinja-Build
Verso
Edge-Control
X-Cache-TTL
RTSS
Fastly-Restarts
X-Ruxit-Js-Agent
X-Powered-By-Plesk
X-VARITI-CCR
Origin-Trial
X-Ac
X-Navigation-Version
X-Abt-Application-Version
X-Content-Type
X-Cached
X-Goog-Hash
Accept-Ch
Service-Worker-Allowed
X-Country-Code
X-GitHub-Request-Id
Display
X-Middleton-Display
Pagespeed
X-Amz-Rid
X-Sol
X-WebKit-CSP-Report-Only
X-Ttl
X-Browser-Type
X-Mg-S
X-Dw-Request-Base-Id
X-Server-Name
SPRequestGuid
X-SharePointHealthScore
X-Varnish-TTL
Cross-Origin-Opener-Policy
X-B3-TraceId
Arr-Disable-Session-Affinity
X-Kraken-Loop-Name
X-Instrumentation
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev
X-Erf-Bev-Bev-Is-Generated
X-Amzn-Trace-Id
X-Powered-CMS
AR-ATIME
Response
X-Middleton-Response
AR-SID
AR-PoweredBy
AR-Request-ID
SPRequestDuration
SPIisLatency
X-Cache-Key
AR-CACHE
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-Fastly-Request-ID
X-Version
X-HP-Trace-Id
X-Jurisdiction
X-HP-Webp
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Cnection
X-Accel-Expires
X-T
Cache-Status
Cache-Tags
Front-End-Https
X-Webkit-CSP
X-Client-IP
X-Times
Edge-Cache-Tag
X-Pinterest-Rid
Pinterest-Generated-By
Pinterest-Version
X-NF-Request-ID
X-MSEdge-Ref
X-Px
X-Fastcgi-Cache
X-Ser
X-Hits
Nginx-Cache
X-NWS-LOG-UUID
Public-Key-Pins
X-Recruiting
MRF-Tech
X-B3-TraceId-Primal
Mrf-Cache-Status
X-LLID
X-Request-Received
X-Request-Processing-Time
X-Shield-Request-Id
X-Kinja-CCPA
X-Frontend
X-Ua-Device
X-Ua-Browser
Server-Node
X-B3-Traceid
Payment
X-RateLimit-Remaining
Access-Control-Request-Method
X-DIS-Request-ID
X-Erf-Stays-Pdp-Viaduct-Migration-Web
TP-Cache
X-FastCGI-Cache
X-Goog-Metageneration
X-HS-Content-Id
S
X-Webkit-CSP-Report-Only
MicrosoftSharePointTeamServices
X-HS-Hub-Id
X-HS-Combine-CSS
X-HS-Cache-Config
TP-L2-Cache
X-LB-Cache
X-Content-Digest
X-Webkit-Csp
X-PressLabs-Stats
X-RateLimit-Limit
X-Ratelimit-Remaining
Content-MD5
X-Distributor
Realpath
X-Microsite
X-Request-Handler-Origin-Region
X-Forwarded-For
Access-Control-Allow-Method
X-Geo-Country
X-Ezoic-Cdn
X-Page-Id
X-FB-Debug
X-GUploader-UploadID
Fastcgi-Cache
X-Cluster-Name
Accept-Charset
X-Protected-By
X-Amz-Apigw-Id
X-Amzn-RequestId
X-Rid
X-Hostname
X-Seen-By
X-Envoy-Decorator-Operation
X-Correlation-Id
Cleartype
X-B3-Sampled
X-Ratelimit-Limit
X-TEC-API-ROOT
TCN
X-TEC-API-VERSION
X-TEC-API-ORIGIN
DC
X-TTL
X-Goog-Storage-Class
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Newrelic-App-Data
Referer-Policy
X-Mobile
X-Origin-Server
X-Origin-Cache
X-Debug-Info
Cross-Origin-Resource-Policy
X-Varnish-Backend
X-Logged-In
X-Git-Hash
X-XRDS-Location
X-Azure-Ref
X-Varnish-Grace
X-Request-Guid
Surrogate-Key
X-Is-Crawler
X-Edge-Location-Klb
X-App-Environment
X-Fb-Rlafr
X-Flags
X-Amz-Replication-Status
X-Aspnet-Version
X-Aspnet-Duration-Ms
X-Route-Name
X-Grace
X-Kinsta-Cache
X-Providence-Cookie
Alternate-Protocol
Count-Hit
X-Contextid
X-Revision
X-Content-Options
X-TT
X-Amz-Meta-S3cmd-Attrs
X-IPS-LoggedIn
Healthy
X-Server-ID
X-Wix-Request-Id
X-Forwarded-Proto
X-App-Server
X-Whom
Frame-Options
X-Hosted-By
MS-Author-Via
WPO-Cache-Message
WPO-Cache-Status
X-Akamai-Edgescape
Viewport
X-Daa-Tunnel
Filterid
Charset
X-Id
Paypal-Debug-Id
X-Magnolia-Registration
Retry-After
X-B
X-Backend-Name
Section-Io-Cache
X-Cache-Age
X-F-Cache
X-Client-Ip
X-Activity-Id
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Az
X-AppVersion
X-Cache-Control
X-Proxy-Cache-Info
X-Www-Served-By
X-Trace-Id
Server-Name
SRV
X-App-Version
X-Time
X-RateLimit-Reset
X-Type
X-Varnish-Server
Host
Refresh
SD-X-WS
X-Response-Served-From
X-Original-Request-Id
X-ARC
Akamai-GRN
X-Rule
X-Proxy
X-Edge-Location
X-Http-Reason
X-Instance
X-UUID
X-User-Agent
X-Status
X-Cache-Grace
X-Cache-Rule
X-Varnish-Age
Front
Protected
X-FW-Serve
X-Region
X-FW-Server
X-FW-Hash
Fastly-SWR
From-Origin
Fastly-SIE
X-Environment-Context
X-Cacheable-TTL
X-Framework
X-Rocket-Nginx-Serving-Static
X-FW-Dynamic
Version
X-FW-Static
Amp-Access-Control-Allow-Source-Origin
X-Rendered-As
X-Akamai-Request-ID2
X-Is-Bot
X-Jobs
X-L-Path
VIX-Pulpo-Upstream-Status
X-FW-Type
X-FW-Version
VIX-Pulpo-Node
X-Page-View
X-Cache-Time
X-EdgeConnect-Cache-Status
Access-Control-Request-Headers
X-Adobe-Loc
X-N
X-Adobe-Content
X-Oracle-Dms-Ecid
X-Unique-Id
X-Tumblr-User
X-G
X-Oracle-Dms-Rid
X-Tumblr-Pixel-1
X-ProcessESI
X-RemovedCookies
X-Tumblr-Pixel-0
X-Tumblr-Pixel
X-Language
X-Load-Cache
ServerID
X-COUNTRY
Country
X-Datadog-Parent-Id
X-Datadog-Trace-Id
X-Datadog-Sampling-Priority
Content-Disposition
X-Source
X-Nf-Request-Id
X-Upgrade-Enabled
X-Drupal-Cache-Tags
X-Varnish-Ttl
X-Yottaa-Metrics
X-CDN-Forward
X-Yottaa-Optimizations
X-Vcache
X-HTML-Minification-Powered-By
X-Datadog-Sampled
X-Mg-Request-UUID
Countrycode
X-Amzn-Remapped-Content-Length
X-DynaTrace
Accept-Language
X-Tt-Trace-Tag
X-Tt-Trace-Host
X-Debug-IsPreview
X-Debug-IsConnected
X-DynaTrace-JS-Agent
X-Signature
X-B-Cache
X-Generated-By
Xet-Cookie
X-ID
X-Xrds-Location
Backend
Webserver
Liferay-Portal
X-DataDome
X-ECache
Xserver
X-WP-CF-Super-Cache
X-Httpd
X-WP-CF-Super-Cache-Cache-Control
CF-IPCountry
X-Device-Type
X-Servername
X-Mode
X-NYM-Debug-Backend
Url
X-Drupal-Cache-Contexts
X-Nginx-Cache
X-Content-Powered-By
X-Zen-Fury
X-Tt-Logid
X-B3-SpanId
X-Content-Age
X-Erf-Web-Scheduler
Fastcgi-Useragent
Azure-SiteName
X-Rewrite-Enabled
X-JoinUs
X-SaId
Azure-SlotName
X-Tb
X-GeoCountry
X-LAGOON
Azure-Version
X-Proto
X-UPSTREAM-Address
Meta-Geo
Filters
X-Cache-Action
Load-Balancing
Onion-Location
X-Sucuri-Cache
Azure-RegionName
X-Director
Azure-InstanceId
X-ServerID
X-Varnish-Cache-Hits
S-Rt
X-GeoCode
X-Sucuri-ID
GEO-INFO
X-Labrador-Cache-Channel
X-SayCDN-TTL
X-Cache-Operation
X-Say-TTL
X-Say-Cacheable
Locale
X-Soup
X-VC-Cache
X-XRDS-LOCATION
X-Urbn-Context-Path
X-Urbn-Site-Id
X-Varnish-Hostname
X-PHP-Host
X-RM-Cache-TTL
X-Container-Uri
X-Git-Commit
X-Sql-Count
X-Cluster-Node
X-Cache-Server
X-Sql-Duration-Ms
X-Storage
Uber-Trace-Id
X-Adobe-Source
X-Detected-As
X-Logging-Id
X-Ms-Request-Id
X-Generation-Time
X-Served-From
X-Forwarded-Host
X-VCT
X-Ms-Version
Web-Mar-Node
TWC-GeoIP-LatLong
TWC-Locale-Group
TWC-Privacy
Webcakes-App-Name
TWC-GeoIP-Country
TWC-Device-Class
Node
Property-Id
TWC-Connection-Speed
Webcakes-App-Version
Webcakes-Region
X-RCS-CacheZone
X-Routing-Service
X-Skip-Cache
X-Zipkin-Id
X-R9-Blue-Green-Version
X-Origin-Hint
X-Debug
X-Extlb
X-FB-TRIP-ID
Mn-Server-Ip
X-Proxied
X-Tumblr-Pixel-2
X-Timing-Wait
Selected-Fe
X-LSADC-Cache
X-Tumblr-Pixel-3
X-Uri
X-Proxy-Build
X-Fetched-On
DB-Nickname
X-Template
X-Format
X-Lambda-Id
X-Tec-Api-Version
X-Tec-Api-Origin
X-Tec-Api-Root
OT-Force-Account-Verify
CDN-RequestId
Source
X-Origin-Date
Fastly-Drupal-HTML
X-Cache-Hit
X-Loop
X-MP-GENERATED-AT
X-Tncms
X-Ratelimit-Reset
X-Cache-Expired-At
X-MCACHE
X-Pass-Why
X-Varnish-Hits
X-Endurance-Cache-Level
X-Srv
X-Ua
X-Redis-Cache
Content-Secure-Policy
X-NGENIX-Cache
X-Via-JSL
X-UA-Device-Type
Upgrade-Insecure-Requests
X-Cache-TTL-Remaining
X-Real-IP
X-Datadome
X-TimeS
Cross-Origin-Window-Policy
X-AIR-PT
X-Origin-TTL
X-CCDN-Origin-Time
X-Hcs-Proxy-Type
X-CCDN-CacheTTL
Section-Io-Id
Section-Origin-Responded
Section-Io-Origin-Time-Seconds
Section-Io-Origin-Status
X-Node-Name
X-Origin-CC
X-Fastly-Request-Id
X-Server-W
X-Pubstack
X-S
NGB
Cache-Hits
X-Rn-Rsrv
X-CSRF-Token
X-Cache-Host
CDN-EdgeStorageId
CDN-CachedAt
CDN-Uid
CDN-RequestPullCode
CDN-RequestCountryCode
CDN-PullZone
CDN-RequestPullSuccess
Ms-Operation-Id
Cache-Name
X-GEO
CDN-Cache
X-PHP-Backend
X-RTag
MS-CV
Cache-Provider
X-Xfnlog-Site
X-Cache-Type
X-Akamai-Transformed
X-Cms-Context
X-Reqid
X-IPLB-Request-ID
X-IPLB-Instance
X-Optimistic-Header
X-Hl-Ver
X-URL
Apigw-Requestid
X-BYPASS-REASON
X-Aspnetmvc-Version
X-No-Session
X-ProxyCache-Key
X-ProxyCache-Status
X-Restarts
X-Parent-Response-Time
X-Newrelic-Synthetics
X-Var-Ttl
Web-Mar-Region
X-A
W
VNS-Cache
Surrogated-Key
T-Server
VNS-Age
X-Rojux
DCR-Decision-By
X-JWT-State
CPC-Age
Canary
BehaviorPad-Version
We-Hiring
X-Mvc-Supplant-Cachable
CPC-Cache
Candidate-Md5Url
Rendered-Blocks
Meta-Geo-Continent
N-Cache
X-A-Dam
X-S-Cookie
MD5-Digest
L
X-ScT
Mail-Subject
Lang
Ngx.Var.Host
Odigeo-Trace-Id
Gannett-Cam-Experience-Id
Fastly-Backend-Name
Server-Host
Sslversion
X-We-Are-Hiring
Gh-Request-Id
X-Vtex-Remote-Cache
X-Slack-Backend
Redirect-Candidate
DCR-Processing-Time-Ms
X-Bc-Bl
X-Wix-Viewer-Type
X-Developer
X-Dispatcher-Number
X-Vdms-Path
X-Ec-Custom-Error
X-SRCache-Key
X-Destination
X-Debug-Cache-Store
Xc-Version
X-Orig-Expires
X-Worker
X-Debug-Cache-Fetch
X-Handled-By
X-Ec-Fail
X-Ec-GeoHdr
X-Tenant
X-SD-PageType
X-Wikidot-Static-Cache
X-Wikidot-Backend
X-Has-Esi
X-GeoIP-Region-Code
X-GeoIP-Country-Code
X-Fastly-Backend
X-External-Request-Id
X-FC-Vary-Parameters
X-Forwarded-Path
X-Gdpr
X-Slack-Shared-Secret-Outcome
X-Date
X-B-Cookie
X-Application
X-RateLimit-Remaining-Second
X-RateLimit-Limit-Second
X-Shop-Environment
X-BCube-Filmed-By
X-Request-Host
X-Is-Gdpr
X-A-Wwc
X-A-Dgt
X-Accel-Buffering
X-Accel-Expires-Debug
X-Aed
X-Nyt-Route
X-Policy
X-CF-Lambda-Version
X-CF-Lambda-Fn
X-Conf
X-Irp-Debug
X-D
X-Vdms-Version
X-Cdn-Diag
X-Bl-Debug
X-Origin-Time
X-Cache-Bucket
X-Cache-NE
X-CacheTTL
X-A-Dcw
X-A-Ccd
X-Cluster
X-CACHE-AGE
X-VWS-Id
X-LJ-Flow-ID
X-AWS-Id
X-Via-Fastly
X-DPWN-IS-SECURE
X-DefHash
X-Core-Value
X-Csrf-Jwt
X-Proxy-Cache-Status
X-DefElseHash
X-Epic-Correlation-Id
X-Eu-Site
X-Gzip
X-Hash
X-Human
X-Geo-Header
X-Generated-On
X-Core-Mission
X-Fmm-Version
X-Forwarded-Site
X-Esi-Check
X-Clientip
Vix-Hermes-Req-Id
X-Alternate-Cache-Key
X-ApacheServer
X-App-Name
True-Client-Country-4JS
Thinkindot-Control
TDXMobile
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
X-Auto-Login
X-Bip
X-CGP
X-Clara-WADP
X-Level-Front-Cache
X-Cdn-Origin
X-TA-CDN-Provider
X-Cache-Debug
X-Cache-Id
X-Cache-Info
X-CMSURLCustom
X-Mid
X-Thanos
X-Thinkindot-L3
X-Up
X-Variation
X-Test
X-SVT-ORM-VERSION
X-Sorting-Hat-ShopId
X-Storefront-Renderer-Rendered
X-SVT-ORM-RULES
X-Varnish-CookieHashed-On
X-Varnish-CookieINHashed-On
X-VServer
X-WADP-Cache
X-App
X-Vmg-Version
X-Viewer-Country
X-Varnish-Remaining-TTL
X-Varnishpool
X-VG-WebCache
X-Sorting-Hat-PodId
X-Sn-Servicetimems
X-Org
X-Origin-Response-Time
X-Owner
X-PAYTM-SRV-ID
X-Old-Content-Length
X-Node-Id
Release
X-Mly-Id
X-Nitro-Cache
X-PERF
X-Platform
X-ShardId
X-ShopId
X-Shopify-Stage
X-Server-IP
X-S-Maxage
X-Pool
X-Qloud-Router
X-Request-Time
X-Loc
X-INCAP-ABP
Datacenter
Environment
Expect-Staple
L5d-Success-Class
Cmsid
Adler-Geo
AKAMAI
Origin
Fastly-GeoIP-CountryCode
Fastly-SSL
Machine
Host-ID
Is-Eu
Magicmarker
HA-Ipaddr
Memcached
Ha-Gx-Prefs
Platform
Cmstype
Producers
ServedBy
X-Section
X-Access
User-Cache-Control
AMP-Access-Control-Allow-Source-Origin
X-BBC-Edge-Cache-Status
X-Nananana
X-Mvc-Supplant-OutputCached
X-Block-Status
X-Nginx-Cache-Key
X-Akamai-Device-Characteristics
X-VG-TLSProxy
Country-Code
X-Origin
X-Device-Os
Esi-Enabled
NM-Fastcgi-Cache
Server-Hostname
X-From
X-WA-Info
Server-Ext
Req-Svc-Chain
X-Gen-Mode
X-Cdn-Srv
X-Dispatcher-Server
X-Hnp-Log
CloudFront-Viewer-Country
X-GeoIP
Sever-Int
DSUID
CDCHOST
X-Scale
X-TIM-N
X-Tx-Id
X-Vcl-Version
X-Cs
Apple-News-Services-Handled
X-Cache-Enabled
Wxu-Next-Commit
Apple-News-Services-Host
X-Instance-Name
Server-Info
Origin-EX
C-Via
X-Presslabs-Stats
Wxu-Next-Hostname
Apple-News-Services-Request-Url
Apple-News-Services-Parsed-Url
WP-Super-Cache
X-Refresh
Origin-CC
X-NodeID
X-Op-Id-All
Wxu-Next-Region
Ssr
X-NCache
X-Correlation-ID
X-LB-NoCache
X-Amz-Meta-Cb-Modifiedtime
Memory
Pics-Label
X-Web-Node
Time
X-Cache-Status-Check
X-Air-Trace-Id
X-Air-Hostname
X-Air-Source
X-TIME
Server-ID
X-ZONE
X-Azure-Ref-OriginShield
X-HA-Backend
Hostname
X-API-Version
Origin-Agent-Cluster
Cf-Device-Type
NGX
X-Dc
X-Tb-Optimization-Total-Bytes-Saved
X-Origin-Expires
X-Platform-Processor
X-Platform-Cluster
Cache-Host
GeoIP-Latitude
X-Microcachable
X-Platform-Router
X-VHOST
X-CACHE-GROUP
XM
X-Site-Version
X-Locale
X-Varnish-Beresp-Grace
X-HN
PFcat
X-VarnishDD-TTL
X-Varnish-Beresp-Ttl
X-Wp-Cf-Super-Cache-Active
X-Fpc
X-Ad-Defer-Variation
X-Vgn-Hpd-Reason
X-DC
X-Micro-Cache
Resin-Trace
Cdn-Requestid
Edge-Copy-Time
X-Internal-Host
YJS-ID
X-Webkit-Csp-Report-Only
X-Via-SSL
Srvid
Locid
X-Via-CDN
X-Via-Edge
A
X-FL-QIT-DEBUG
X-FL-EDGE
X-B3-Spanid
X-TraceId
Sid
X-WP-CF-Super-Cache-Active
X-AB
X-Zone
X-Cache-ASPX
X-Pod-Name
X-Upstream-Ht
X-Github-Request-Id
X-Upstream-Ct
X-ATG-Version
X-Cached-By
X-Contensis-Viewer-Groups
X-FireWall-Port
X-Buckets
Location
X-LiteSpeed-Cache-Control
User-Agent
Cache-Key
X-Moov-T
X-Moov-Xdn-Version
X-B3-Parentspanid
Uri
True-Client-Ip
X-Geo-Region
X-DataCenter
X-Varnish-Authentication
X-NGINX-Cache
X-FTR-Request-ID
IsBot
X-Backend-Instance
GeoIP-Country-Code
X-SIPLIST1
X-Info
X-Accel-Version
X-VCache
X-LiteSpeed-Tag
X-Planisys-CDN-TTL
X-Planisys-CDN-Rules
X-Planisys-CDN-Cache
State
X-Datacenter
X-Platform-Server
CF-Ctrl
X-Nitro-Cache-From
X-Nitro-Rev
GeoIp-Country-Code
X-HS-Content-Campaign-Id
X-Is-Tablet
X-Is-Desktop
Lb
X-Is-Supported-Browser
X-Browser-Name
X-Tcp-Rtt
X-Is-Mobile
X-Provided-By
X-MSEdge-Features
X-Release
X-VC
X-Fastly-Cache
NtCoent-Length
X-MSEdge-Flight
SID
True-Client-IP
X-Cache-Remote
X-Rocket-Build-Number
X-Sigma-Backend
X-CS
X-Geo
XServer
X-RN-RSRV
X-Sigma
Cdn
X-NewRelic-App-Data
X-HostName
X-CSRF-TOKEN
X-Vgn-Hpd-Variations-Key
X-Vgn-Hpd-Cached
Cache
X-Vgn-Hpd-Ssi
X-Hyper-Cache
Path
Epwk-X-Cache
X-Api-Version
Fastly-Drupal-Html
X-Gamma-Serve
X-TRACE-ID
X-GeoIP-City
X-SRV
X-FPC
X-Generated-In
X-Scheme
X-HS-Status
Cf-Ipcountry
X-Webstats-RespID
X-Service
X-CACHE-KEY
X-Frame-Option
Tcn
X-GoCache-CacheStatus
Ohc-File-Size
Cache-Tv-Group
CountryCode
X-UA
X-Wp-Cf-Super-Cache
X-Rebelmouse-Surrogate-Control
Serverid
X-APP-VERSION
X-Wp-Cf-Super-Cache-Cache-Control
X-Rebelmouse-Cache-Control
Srv
X-Esi
Cdnsip
X-Pad
X-Air-Pt
X-Amz-Meta-Opti
Cdncip
X-EC-Lua
X-AK-Request-ID
Kp-EeAlive
X-Guploader-Uploadid
X-Edge-Server
X-Vercel-Cache
X-Vercel-Id
X-Cache-Ttl
X-Mobile-URL
Cdn-Host
X-Location
X-Traceid
Cdn-Request-Time
X-Branch-Name
WebServer
HostName
X-Wp-Cf-Super-Cache-Cookies-Bypass
X-Cdn-Forward
X-Origin-Cache-Key
X-FTR-Backend
X-Men
X-Cdn-Cache-Status
X-FTR-Backend-Server
WZWS-RAY
X-FTR-Balancer
X-Country-Code-Real
Req-ID
XkeyRZ
X-Cache-Tags
X-FTR-Cache-Status
Proxy-Connection
X-Proxy-CacheRZ
Yak-Timeinfo
Geoip-Latitude
M-TraceId
X-Vc
Env
On-Server
Ohc-Cache-HIT
X-Aicache-OS
X-Developers
CacheControlHeader
X-NMSegId
X-Region-Sid
X-FTR-Expires
X-VCL-Version
CDN
X-TX-ID
X-Cdn-Request-ID
RNT-Time
X-Servedbyhost
X-NWS-UUID-VERIFY
Mime-Version
X-SB
RNT-Machine
X-Via-Popn
X-Via-Poph
V-Age
Tube-Return
X-V-Cache
Server-Id
X-Minions-Version
X-Akamai-Pragma-Client-IP
Tube-Get-Contents
Tube-Got-Results
Tube-Got-Eval
X-CDN-Cache-Status
X-Via-Popv
X-Ad-Load-Variation
Click-Count-Action-Start
X-Cache-FS-Status
Click-Count-Error
X-B3-Trace-ID
X-Acquia-Purge-Cdn-Unconfigured
X-Nc
Ngx
X-TT-LOGID
X-Edge-Pop
LB
X-Req
Cluster
X-LB-ID
X-Wa
X-Lb-Cache
X-Scope-Id
Pramga
X-Request-Start
X-M-Reqid
X-M-Log
X-Fastly-Country-Code
CF-Cached-On
Content-Script-Type
ENV
X-WP-CF-Super-Cache-Cookies-Bypass
X-Ha-Backend
Content-Style-Type
WWW-Authenticate
X-Shield-Cache-Expires
X-Snapshot-Date
X-Tim-N
X-MiniProfiler-Ids
X-Edge-POP
X-Check-Cacheable
X-Dw-Trace-Id
X-Qnm-Cache
X-IN-APIGATEWAYSSL
X-IN-APIGATEWAY
X-User
X-Acquia-Purge-Tags
X-Lb-Nocache
X-Acquia-Site
PICS-Label
X-Acquia-Application-UUID
X-Via-Ucdn
X-Acquia-Application-Trace
Yjs-Id
X-APP
X-Processor
X-TH-Server
X-Varnish-Beresp-TTL
X-Varnish-Beresp-Status
X-Request-URI
X-Litespeed-Cache-Control
X-Fastly-Backend-Reqs
X-Ckpd-Fst-Backend
Log-Origin
X-Miniprofiler-Ids
CACHE-MISS-TO-ORIGIN
Inserted-Into-Cache-At
X-RAMCache
Cneonction
X-Fastly-Cache-Hits
X-Cached-Since
Vha6-Origin
X-Iauth-Set-Uid
X-ElasticPress-Query