Threat Level: green Handler on Duty: Jan Kopriva

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
X-Frame-Options
Expires
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Accept-CH
Last-Modified
CF-Cache-Status
ETag
X-XSS-Protection
Expect-CT
Accept-Ranges
CF-RAY
Pragma
X-Powered-By
X-Cache
Via
Age
Content-Security-Policy
Alt-Svc
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
X-Download-Options
X-Request-Id
X-Timer
Access-Control-Allow-Headers
X-Xss-Protection
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
Access-Control-Allow-Credentials
CF-Ray
Accept-CH-Lifetime
Content-Security-Policy-Report-Only
X-DNS-Prefetch-Control
X-AspNet-Version
X-Runtime
Cf-Request-Id
Permissions-Policy
Server-Timing
X-Drupal-Cache
X-Generator
X-Envoy-Upstream-Service-Time
X-Cache-Status
X-Ua-Compatible
X-Cacheable
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
Timing-Allow-Origin
Feature-Policy
X-CONTENT-TYPE-OPTIONS
X-Content-Security-Policy
Xkey
Upgrade
X-CDN
Access-Control-Expose-Headers
Content-Encoding
X-XSS-PROTECTION
Status
X-AspNetMvc-Version
Accept-Ch
Access-Control-Max-Age
Host-Header
X-Amz-Request-Id
X-Age
Request-Context
X-Amz-Id-2
Cf-Edge-Cache
X-Backend
X-Robots-Tag
X-Hacker
X-Via
Keep-Alive
Cf-Apo-Via
X-Turbo-Charged-By
X-Amz-Version-Id
X-Rq
X-AH-Environment
X-Cache-Group
X-Vhost
X-Server
X-Dispatcher
X-Proxy-Cache
X-Ws-Request-Id
EagleId
CONTENT-SECURITY-POLICY
X-UA-Device
X-Request-ID
X-Varnish-Cache
Pantheon-Trace-Id
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
Grace
X-Server-Powered-By
X-OneAgent-JS-Injection
X-Dns-Prefetch-Control
X-Pingback
Allow
X-Page-Speed
X-Litespeed-Cache
X-WebKit-CSP
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Swift-SaveTime
X-Swift-CacheTime
Ali-Swift-Global-Savetime
X-Node
X-FTR-Request-ID
X-Device
X-Server-Id
EagleEye-TraceId
X-Cache-Lookup
X-Host
X-Backend-Server
X-Country-Code
Surrogate-Control
X-LiteSpeed-Cache
X-Readtime
X-Akam-SW-Version
Cf-Railgun
X-Cloud-Trace-Context
X-HW
X-Response-Time
X-Ruxit-JS-Agent
Cache-Tag
P3p
X-Amz-Server-Side-Encryption
Content-Location
X-Ua-Device
Cross-Origin-Opener-Policy
X-Rack-Cache
X-Nginx-Upstream-Cache-Status
Service-Worker-Allowed
X-Trace
X-Nginx-Cache-Status
Request-Id
X-TraceId
Fastly-Restarts
X-Application-Context
X-Content-Type
X-Clacks-Overhead
X-TtlSet
Rating
X-Times
X-Vname
X-PC
X-Cnection
X-Oneagent-Js-Injection
X-Midtier
X-Mcache
X-Edge
X-ESI
X-Browser-Type
X-Nf-Request-Id
X-Country
X-Country-Code-Real
X-FTR-Cache-Status
X-FTR-Backend-Server
X-FTR-Backend
X-FTR-Balancer
X-Cache-TTL
X-Vcap-Request-Id
Edge-Control
X-FTR-Expires
Origin-Trial
Accept-Ch-Lifetime
Surrogate-Key
X-FastCGI-Cache
X-Powered-By-Plesk
X-Ac
X-Element-Page-Cache
X-D2id
X-NWS-LOG-UUID
X-Kinja-Server
X-Exp-Id
X-Kinja-Build
X-Kinja-Revision
X-Kinja
X-GoogleNews-Bot
X-Exp-Variant
X-Cdn-Fetch
X-Abt-Application-Version
Verso
X-Upstream
X-ECACHE
X-Navigation-Version
X-Mod-Pagespeed
X-ORACLE-DMS-RID
X-Amz-Rid
Nginx-Cache
X-B3-TraceId
X-Pinterest-Rid
Pinterest-Generated-By
Pinterest-Version
Pagespeed
X-Sol
X-Middleton-Display
Display
X-GitHub-Request-Id
X-Ruxit-Js-Agent
X-Language
X-Envoy-Decorator-Operation
X-Middleton-Response
Response
X-Kraken-Loop-Name
X-PDP-UNCACHING-HASH
X-Url
X-Erf-Bev-Bev-Is-Generated
X-Instrumentation
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev
S
AR-ATIME
AR-PoweredBy
AR-Request-ID
Edge-Cache-Tag
Akamai-GRN
X-MS-InvokeApp
X-Goog-Hash
X-Ratelimit-Limit
X-Resp-Is-Stale
X-Distributor
X-Ttl
X-ARC
X-Client-IP
X-Edge-Location-Klb
X-Kinsta-Cache
X-Ser
X-SharePointHealthScore
SPRequestGuid
SPIisLatency
SPRequestDuration
X-NGENIX-Cache
Access-Control-Request-Method
X-Shield-Request-Id
X-Ezoic-Cdn
Front-End-Https
X-Content-Digest
X-Dw-Request-Base-Id
X-Recruiting
RTSS
X-Varnish-TTL
X-Amzn-Trace-Id
X-Cache-Key
Cache-Status
X-Powered-CMS
X-Version
X-T
Public-Key-Pins
TP-Cache
Fastcgi-Cache
X-HS-Content-Id
X-HS-Hub-Id
X-HS-Cache-Config
X-Accel-Expires
X-Mg-S
X-MSEdge-Ref
X-Webkit-Csp
X-Daa-Tunnel
Arr-Disable-Session-Affinity
X-Ismobilevalue
Realpath
X-Cluster-Name
AR-CACHE
Cache-Tags
X-Cached
X-Id
X-Correlation-Id
X-Forwarded-For
X-Content-Security-Policy-Report-Only
X-Fastly-Request-ID
X-HS-Combine-CSS
X-Request-Received
Content-MD5
X-Request-Processing-Time
X-Ua-Browser
Payment
X-DIS-Request-ID
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Newrelic-App-Data
X-GUploader-UploadID
X-Cambria-Cache-Control
X-RateLimit-Remaining
X-Jurisdiction
X-HP-Webp
X-HP-Trace-Id
X-HS-Prerendered
X-HS-CF-Cache-Status
X-Azure-Ref
YJS-ID
X-Server-Name
Ar-SID
Content-Disposition
X-Xrds-Location
X-Amz-Replication-Status
Count-Hit
X-Ratelimit-Remaining
X-Request-Device-Id
X-Px
X-Unique-Id
X-CST
Cross-Origin-Embedder-Policy
Cleartype
X-Logged-In
X-Origin-Server
X-Rid
X-FB-Debug
X-VARITI-CCR
X-Activity-Id
X-AppVersion
Cross-Origin-Resource-Policy
X-SERVER-NAME
X-COUNTRY
X-Protected-By
X-Az
Accept-Charset
X-Page-Id
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Amz-Meta-S3cmd-Attrs
X-Git-Hash
X-Proxy
X-Www-Served-By
X-Request-Handler-Origin-Region
X-Ratelimit-Reset
X-Microsite
X-LLID
MicrosoftSharePointTeamServices
X-Goog-Metageneration
X-Load-Cache
X-TTL
X-Template
X-Varnish-Backend
Version
X-ORACLE-DMS-ECID
X-Meli-Trace-Platform
X-Meli-Trace-Site
X-Forwarded-Proto
X-Meli-Trace-Bu
X-Amz-Apigw-Id
X-Amzn-RequestId
X-Geo-Country
Server-Node
X-Hits
X-Upgrade-Enabled
Server-Name
X-Hostname
X-PressLabs-Stats
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-B3-Sampled
X-Content-Options
Viewport
X-Frontend
AKAMAI-GRN
X-WebKit-CSP-Report-Only
X-B3-TraceId-Primal
X-Fb-Rlafr
X-Device-Type
X-App-Server
X-Grace
Section-Io-Cache
X-TT
MRF-Tech
Mrf-Cache-Status
Access-Control-Allow-Method
X-Varnish-Grace
X-B
X-Varnish-Server
Fastly-SIE
Alternate-Protocol
X-Status
Healthy
Fastly-SWR
X-Goog-Storage-Class
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
TCN
Upgrade-Insecure-Requests
X-Request-Guid
DC
Host
X-Magnolia-Registration
X-EdgeConnect-Cache-Status
X-CSRF-Token
X-Contextid
X-URL
X-Cache-Age
X-Amzn-Remapped-Content-Length
Retry-After
X-Tt-Trace-Host
X-Tt-Trace-Tag
MS-Author-Via
X-Buckets
Amp-Access-Control-Allow-Source-Origin
X-Oracle-Dms-Ecid
X-Cache-Control
X-Debug
X-App-Version
X-Origin-CC
X-Revision
X-Type
X-Origin-TTL
Frame-Options
X-Tec-Api-Origin
X-Varnish-Ttl
X-Tec-Api-Root
X-Tec-Api-Version
X-Response-Served-From
X-Original-Request-Id
X-Tumblr-Pixel-0
X-Cache-Status-Check
X-Tumblr-Pixel
X-Backend-Name
X-Akamai-Edgescape
X-Tumblr-Pixel-1
X-Tumblr-User
X-Instance
X-Hl-Ver
Cross-Origin-Opener-Policy-Report-Only
Cross-Origin-Embedder-Policy-Report-Only
X-INCAP-ABP
X-RemovedCookies
X-Requestid
X-UUID
X-ProcessESI
X-Adobe-Loc
SD-X-WS
Section-Io-Id
X-N
X-Adobe-Content
X-NYM-Debug-Backend
X-G
X-Vcl-Version
X-Lambda-Id
X-Debug-IsPreview
X-Seen-By
X-Content-Powered-By
X-Debug-IsConnected
X-ServerID
X-Storage
X-WP-CF-Super-Cache-Cache-Control
Charset
X-Trace-Id
X-Yottaa-Metrics
MS-CV
X-Yottaa-Optimizations
Ms-Operation-Id
X-Akamai-Request-ID2
X-Mobile
Access-Control-Request-Headers
X-WP-CF-Super-Cache
X-Is-Bot
X-Mg-Request-UUID
X-Server-W
X-Rendered-As
X-Framework
X-RTag
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
X-AB
NGB
X-Dc
X-RM-Cache-TTL
X-Request-Platform
X-Request-Bu
Webserver
X-Request-Site
Cache
Filterid
X-DataDome
Accept-Language
X-Cache-Time
Refresh
X-Cache-Hit
X-Time
Paypal-Debug-Id
SRV
X-Region
Onion-Location
X-VC-Cache
X-Ms-Request-Id
X-Ms-Version
X-B3-SpanId
X-HITS
X-User-Agent
X-CLOUD-TRACE-CONTEXT
X-Real-IP
X-Node-Name
Priority
X-Yandex-Req-Id
X-CCDN-CacheTTL
CDN-RequestId
X-Cache-Expired-At
X-F-Cache
X-Hcs-Proxy-Type
X-CCDN-Origin-Time
AR-SID
Protected
X-IPS-LoggedIn
Cross-Origin-Window-Policy
Liferay-Portal
X-Pass-Why
X-Wormhole-Sdk
X-Rocket-Nginx-Serving-Static
X-LB-Cache
Xet-Cookie
X-Datadog-Trace-Id
X-Datadog-Sampled
X-Datadog-Sampling-Priority
X-NF-Request-ID
X-Environment-Context
X-Mode
X-HTML-Minification-Powered-By
X-Whom
X-L-Path
X-Datadog-Parent-Id
GEO-INFO
X-Fastcgi-Cache
YJS-CacheStatus
X-Drupal-Cache-Tags
Backend
X-Service
X-Tb
X-Rule
Country
X-Handled-By
OT-Force-Account-Verify
X-Tcp-Rtt
Webcakes-App-Name
TWC-GeoIP-Country
TWC-Connection-Speed
X-IPLB-Request-ID
X-IPLB-Instance
ServedBy
Property-Id
Filters
Meta-Geo
X-SaId
TWC-Device-Class
X-Routing-Service
TWC-Locale-Group
TWC-GeoIP-Region
TWC-GeoIP-LatLong
TWC-GeoIP-City
TWC-GeoIP-DMA
TWC-Privacy
X-XRDS-Location
X-Is-Supported-Browser
X-UPSTREAM-Address
X-Is-Mobile
X-Is-Tablet
X-JoinUs
X-Proxy-Cache-Info
X-MP-GENERATED-AT
X-Is-Desktop
Webcakes-Region
X-Cloudmap
X-Browser-Name
X-Extlb
X-FB-TRIP-ID
X-Geo-Region
X-App-Environment
X-Origin-Hint
X-Is-Modern-Browser
Webcakes-App-Version
X-Rewrite-Enabled
X-Proxied
X-Varnish-Beresp-Grace
X-Zipkin-Id
X-Rn-Rsrv
X-Cache-Host
X-Shopify-Stage
X-Servername
X-BYPASS-REASON
X-Restarts
Mn-Server-Ip
X-Connection-Hash
DB-Nickname
X-Cdn-Origin
X-Alternate-Cache-Key
Web-Mar-Node
X-Cluster
X-Cluster-Node
X-Fetched-On
X-Skip-Cache
X-Tumblr-Pixel-3
X-Loop
X-Locale
X-ProxyCache-Status
X-ProxyCache-Key
Uber-Trace-Id
X-Storefront-Renderer-Rendered
X-Origin-Date
X-Tncms
X-Tumblr-Pixel-2
Url
X-Generation-Time
X-Forwarded-Host
X-Adobe-Source
X-Hit
X-Vcache
X-Httpd
X-Format
Expiry
X-Cacheable-TTL
X-WP-CF-Super-Cache-Active
ServerID
X-Cms-Context
X-Director
X-Web-Node
X-Cache-Action
X-RCS-CacheZone
X-Edge-Location
X-Logging-Id
X-FW-Dynamic
X-FW-Version
X-ECache
X-Soup
X-FW-Type
X-FW-Static
X-FW-Serve
X-FW-Server
X-FW-Hash
X-Scope-Id
X-RateLimit-Limit-Second
Apigw-Requestid
Atl-Traceid
Environment
X-RateLimit-Remaining-Second
X-Redis-Cache
X-S
X-Debug-Info
Cache-Hits
Selected-Fe
X-Detected-As
X-Auth-Group-Type
X-Wix-Request-Id
X-Endurance-Cache-Level
X-Urbn-Site-Id
X-Drupal-Cache-Contexts
X-Proxy-Build
X-Timing-Wait
X-Urbn-Context-Path
X-Served-From
Locale
X-Hosted-By
X-PHP-Host
X-Labrador-Cache-Channel
X-Origin-Cache
X-B3-Traceid
LB
X-VCT
X-VC
X-Origin
X-SayCDN-TTL
X-Provided-By
X-Say-Cacheable
X-Say-TTL
X-R9-Blue-Green-Version
X-Server-ID
X-Is-Mobile-Only
X-Cache-Debug
Fastcgi-Useragent
X-Mly-Id
X-ShopId
X-No-Session
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-ShardId
X-Presslabs-Stats
X-NewRelic-App-Data
Front
X-Platform
X-Api-Version
Node
X-GEO
Xserver
X-CDN-Forward
X-Varnish-Cache-Hits
X-Varnish-Age
X-Varnish-Beresp-Ttl
Cache-Tv-Group
X-Lagoon
X-CDN-Cache-Status
X-UA
Countrycode
WPO-Cache-Status
X-WP-CF-Super-Cache-Cookies-Bypass
X-Generated-By
X-Tt-Logid
X-Site-Version
X-Ua
X-NWS-UUID-VERIFY
X-SRV
Referer-Policy
X-Optimistic-Header
X-CACHE-AGE
X-Fastly-Request-Id
From-Origin
X-B-Cache
X-Signature
X-Webstats-RespID
X-Azure-Ref-OriginShield
AMP-Access-Control-Allow-Source-Origin
X-Accel-Version
Cache-Provider
X-VC-TTL
Request-ID
X-Cache-Operation
X-Cache-Rule
Location
X-PHP-Backend
X-Source
X-IsAdmin
X-Worker
X-Xfnlog-Site
X-TA-CDN-Provider
X-Tb-Optimization-Total-Bytes-Saved
X-Auto-Login
X-Tx-Id
X-LJ-Flow-ID
X-VWS-Id
X-Reqid
X-AWS-Id
Gh-Request-Id
Expect-Staple
DCR-Decision-By
X-GeoCode
DCR-Processing-Time-Ms
X-From
Fl-Custom-Application
X-External-Request-Id
X-Eu-Site
Meta-Geo-Continent
N-Cache
X-Ee-Request-Id
MD5-Digest
Log-Origin
Host-ID
L5d-Success-Class
Lang
Ha-Gx-Prefs
Cluster
Apple-News-Services-Host
Apple-News-Services-Parsed-Url
Apple-News-Services-Request-Url
Candidate-Md5Url
Apple-News-Services-Handled
S-Rt
Source
X-Ig-Push-State
X-Ig-Origin-Region
CDN-Cache
CDN-CachedAt
CDN-RequestPullSuccess
CDN-Uid
Ngx.Var.Host
X-GeoIP-City
CDN-RequestPullCode
X-Sigma-Backend
CDN-EdgeStorageId
X-Hash
CDN-PullZone
X-GeoCountry
X-Ee-Origin
X-ApacheServer
X-Application
X-B-Cookie
X-D
X-Aed
X-Action
X-A-Dcw
X-A-Dgt
X-A-Wwc
X-Access
X-Csrf-Jwt
X-Core-Value
X-Conf
X-Cache-NE
X-Cms-Device
X-Clientip
X-Contensis-Viewer-Groups
X-Content-Age
X-BCube-Filmed-By
X-Bl-Debug
X-Cache-Aspx
X-A-Dam
X-A-Ccd
Redirect-Candidate
Rendered-Blocks
X-Ec-Fail
RNT-Machine
X-Ec-GeoHdr
Pragrma
Odigeo-Trace-Id
CF-IPCountry
Origin
X-Ee-Generated-By
RNT-Time
Sslversion
Wxu-Next-Commit
Wxu-Next-Hostname
Wxu-Next-Region
X-A
X-Depends
X-Destination
Store-Cloud-Cache
Time-Cloud-Cache
X-Developer
X-Ee-Request-Date
CDN-RequestCountryCode
X-Viewer-Country
X-PERF
X-Pubstack
X-Vdms-Version
X-Vary-Devices
X-PAYTM-SRV-ID
X-Vtex-Remote-Cache
X-CGP
X-Node-Id
WPO-Cache-Message
X-Org
X-Req
X-Rocket-Build-Number
X-Sucuri-Cache
X-Save-Cache
X-ScT
X-Section
X-Sigma
X-S-Cookie
X-V-Cache
X-Varnish-Hostname
X-Varnish-Beresp-Status
X-Varnish-Authentication
X-Rojux
Xc-Version
X-VG-TLSProxy
X-Micro-Cache
X-Loc
Origin-Agent-Cluster
X-Litespeed-Cache-Control
Server-Host
RewriteTestHook
RewriteTeamHook
X-Bc-Bl
X-Varnish-Director
Thinkindot-CacheControl-Type
X-Varnish-CookieHashed-On
Thinkindot-CacheControl
TDXMobile
X-Request-URI
X-Varnish-CookieINHashed-On
ServerName
Req-Svc-Chain
Origin-Site
PFcat
Origin-EX
Origin-CC
X-Men
X-LSADC-Cache
X-Region-Sid
X-Render-Time
Release
X-Varnish-Remaining-TTL
X-VarnishDD-TTL
X-Ion-Healthy
X-HN
X-Dispatcher-Server
X-Level-Front-Cache
X-Thinkindot-L3
X-Aicache-OS
X-SD-PageType
X-Acquia-Purge-Cdn-Unconfigured
X-Accel-Expires-Debug
X-SRCache-Key
X-AK-Request-ID
X-Akamai-Device-Characteristics
X-Debug-Cache-Fetch
X-Date
X-Thinkindot-L1
X-Amz-Storage-Class
X-Debug-Cache-Store
X-AB-Test
X-SB
V-Age
We-Hiring
X-DefElseHash
X-DefHash
X-Jungle-Id
Powered-By
Web-Mar-Region
X-BBC-Edge-Cache-Status
X-Internal-TTL
X-Sn-Servicetimems
X-UA-Device-Type
X-Up
X-Uri
X-Content-Length
X-Bug-Bounty
Cmstype
X-Old-Content-Length
Cmsid
X-Nyt-Route
X-GeoIP-Region-Code
X-GeoIP-Country-Code
Azure-Version
X-SIPLIST1
X-Gdpr
X-Op-Id-All
Country-Code
X-Shield-Cache-Expires
X-Generated-On
Cdnsip
Cdncip
X-Moov-Xdn-Version
X-Ion-Hop
CDCHOST
X-Moov-Xdn-Caching-Status
Canary
X-NMSegId
X-CacheTTL
Cache-Contol
X-HS-Content-Campaign-Id
X-Upstream-Ct
X-GoCache-CacheStatus
X-Upstream-Ht
Azure-SlotName
X-Gamma-Serve
X-Policy
X-Moov-T
Azure-InstanceId
L
X-Epic-Correlation-Id
IsBot
Mail-Subject
X-Via-Fastly
NM-Fastcgi-Cache
Nord-Request-ID
X-Slack-Shared-Secret-Outcome
X-VG-WebCache
X-Proto
X-Vmg-Version
Azure-RegionName
X-Slack-Backend
X-Forwarded-Site
Fastly-SSL
X-FC-Vary-Parameters
X-Fmm-Version
Gannett-Cam-Experience-Id
X-Origin-Expires
Azure-SiteName
X-We-Are-Hiring
X-Cache-Date
DSUID
X-Origin-Time
X-Frame-Option
X-Client-Ip
X-NGINX-Cache
X-SVT-ORM-RULES
X-Edge-Server
X-Path
X-Fastly-Backend
X-Wikidot-Backend
X-Gen-Mode
X-Wikidot-Static-Cache
X-Mvc-Supplant-Cachable
XM
X-Hnp-Log
Vix-Hermes-Req-Id
X-Vercel-Id
X-Server-IP
X-CUA
X-Bip
X-Thanos
X-Ec-Custom-Error
X-Vercel-Cache
X-Location
X-Human
X-SVT-ORM-VERSION
Tube-Return
Click-Count-Action-Start
Click-Count-Error
Tube-Get-Contents
Tube-Got-Eval
Cdn-Request-Time
X-Air-Pt
Sid
X-Cs
Fastly-Backend-Name
Content-Style-Type
Content-Script-Type
User-Cache-Control
Tube-Got-Results
X-Cache-FS-Status
X-Block-Status
CacheControlHeader
C-Via
X-Sucuri-ID
X-B3-Trace-ID
X-Backend-Instance
Cdn-Host
X-FORWARDED-FOR
X-App-Name
X-Parent-Response-Time
X-Mvc-Supplant-OutputCached
Machine
Fastly-GeoIP-CountryCode
X-Esi-Check
Pics-Label
X-ND-Cache
X-Gzip
X-ElasticPress-Query
X-Proxied-Request
X-DPWN-IS-SECURE
X-Cache-Id
Platform
Producers
X-Pad
NGX
CloudFront-Viewer-Country
X-Origin-Response-Time
Fastly-Drupal-HTML
X-TT-LOGID
X-Nananana
Mime-Version
X-Via-Popv
X-Varnish-Hits
X-Via-Poph
X-Via-Popn
Debug
X-Refresh
X-Cached-By
X-Datadome
X-ZONE
X-AIR-PT
X-Servedbyhost
Cookie
X-TH-Server
X-Srv
X-HA-Backend
X-APP
Product
HA-Ipaddr
X-DynaTrace-JS-Agent
GeoIP-Latitude
Server-ID
X-Amz-Meta-Cb-Modifiedtime
GeoIp-Country-Code
X-Litespeed-Tag
X-Zone
X-Cache-VC
X-Nginx-Cache-Key
X-Webkit-CSP
X-Cdn-Forward
Load-Balancing
X-GeoIP
X-User
X-Debug-Service
X-Fpc
Edge-Cache
Server-Ext
Cdn
X-Wa
Server-Hostname
Sever-Int
WZWS-RAY
HostName
MIME-Version
X-LB-ID
DataCenter
X-B3-Parentspanid
X-Nc
True-Client-Country-4JS
Fastly-Drupal-Html
X-Unity-Cache
Show-Do-Not-Sell-Link
Traceparent
X-Newrelic-Synthetics
SID
X-Cache-Backend
Akamai-Mon-Iucid-Del
Resin-Trace
X-LB-NoCache
X-B3-Spanid
X-Vc
X-Nginx-Cache
Lb
Tcn
X-Request-Start
X-Ez-Minify-Html
X-Scheme
X-VCL-Version
X-Lsadc-Cache
X-RateLimit-Limit
Surrogated-Key
Wsr-Cache
X-Pool
X-TX-ID
Sm-Log-Id
X-Service-Response-Time
Yjs-Id
X-CS
X-CDN-Provider
X-NodeID
NtCoent-Length
X-Datacenter
Serverhost
X-HOST
X-Request-Host
CountryCode
X-RequestId
A
XkeyR9
X-LiteSpeed-Tag
X-Vgn-Hpd-Reason
X-HubSpot-Correlation-Id
X-LiteSpeed-Cache-Control
Hostname
Xkeylog
X-Proxy-Cache-La3
X-Cache-Grace
Xkey-La3
X-Proxy-CacheR9
N1-Cache
Datacenter
X-WA
Yak-Timeinfo
X-API-Version
X-Lb-Id
X-Akamai-Pragma-Client-IP
X-DataCenter
X-DynaTrace
Cs
Cdn-Requestid
X-Udemy-Cache-App-Namespace
CDN
X-Air-Trace-Id
X-Air-Hostname
X-Air-Source
Esi-Enabled
X-Dynatrace-Js-Agent
X-ID
X-Fastly-Backend-Reqs
Edge-Copy-Time
X-NC
X-FPC
Uri
X-Via-SSL
X-Via-CDN
X-Via-Edge
X-CACHE-KEY
X-Via-JSL
X-Geolocation
X-Html-Minification-Powered-By
X-Jobs
Server-Id
X-Stale
X-Zen-Fury
X-VC-Age
X-Styx-Info
RATING
X-Srcache-Fetch-Status
X-Styx-Origin-Id
Geoip-Latitude
X-AC
T-Server
X-Ez-Minify-Js
True-Client-IP
GeoIP-Country-Code
X-HA-Device-Type
X-Srcache-Store-Status
X-HA-Bot-Classification
Req-ID
Cr
X-HA-Application-Name
Proxy-Firewall
X-TimeS
X-TIM-N
ServerHost
WP-Super-Cache
Srv
Content-Secure-Policy
Pramga
X-Swift-Error
On-Server
X-Cdn-Srv
X-Varnish-Beresp-TTL
X-Var-Ttl
X-Lb-Nocache
From-Cache
X-ServedByHost
X-Oracle-DMS-ECID
Cloudfront-Viewer-Country
X-MSEdge-Flight
X-MSEdge-Features
X-App
X-Ha-Backend
X-Powered-By-VTEX-Cache
X-CSRF-TOKEN
X-VTEX-Cache-Time
W
X-VTEX-Cache-Server
X-Wp-Cf-Super-Cache
X-Wp-Cf-Super-Cache-Cache-Control
X-LAGOON
X-Ssense-Gql
X-Ssense-Shipping-Surcharge-Enabled
X-Ramcache
X-Via-PopN
X-Geo
X-Via-PopH
X-Via-PopV
X-Cdn-Cache-Status
FSS-Cache
X-Correlation-ID
X-Fastly-Cache
X-Wp-Cf-Super-Cache-Active
X-Wp-Cf-Super-Cache-Cookies-Bypass
X-Proxy-Cache-LA2
CF-Cached-On
X-WA-Info
X-Shopid
X-Webkit-Csp-Report-Only
Cl-Cache
X-Shardid
Ngx
X-Sorting-Hat-Podid
X-Sorting-Hat-Shopid
X-Elasticpress-Query
X-Web-Server
X-Check-Cacheable
Coldstone-Viewer-Country-Region-Name
Coldstone-Viewer-Currency
Coldstone-Viewer-Country
X-Th-Server
Akamai-X-True-TTL
X-Sucuri-Id
Ohc-File-Size
X-VServer
X-Key
Ohc-Cache-HIT
X-Serial
X-DC
X-ATG-Version
WebServer
Cf-Ipcountry
X-Mg-Cache
X-Fastly-Cache-Status
BehaviorPad-Version
URI
Warning
Cneonction
X-Fastly-Cache-Hits
User-Agent
FSS-Proxy
Host-Name
X-Request-Url
X-Env
Xkey-G-Jp