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