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