Threat Level: green Handler on Duty: Yee Ching Tok

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