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