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