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