Threat Level: green Handler on Duty: Didier Stevens

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
Accept-Ranges
Last-Modified
Link
CF-Cache-Status
X-Powered-By
Pragma
ETag
CF-RAY
Expect-CT
X-XSS-Protection
Via
Age
X-Cache
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
P3P
Referrer-Policy
X-Cache-Hits
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Xss-Protection
X-UA-Compatible
X-Served-By
Alt-Svc
X-Request-Id
X-Varnish
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Download-Options
X-AspNet-Version
Access-Control-Allow-Credentials
X-Runtime
X-Check
X-Drupal-Cache
Content-Security-Policy-Report-Only
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
X-Generator
X-Cache-Status
CF-Ray
X-Cacheable
X-Kinja-Server-Push
X-DNS-Prefetch-Control
Timing-Allow-Origin
X-Template
X-Language
X-FRAME-OPTIONS
X-AspNetMvc-Version
X-Ua-Compatible
X-Iinfo
X-Buckets
Status
X-Content-Security-Policy
X-CDN
Content-Encoding
Upgrade
Access-Control-Expose-Headers
X-Envoy-Upstream-Service-Time
Access-Control-Max-Age
Keep-Alive
X-Via
X-Drupal-Dynamic-Cache
X-Ws-Request-Id
X-Backend
X-Turbo-Charged-By
X-AH-Environment
P3p
X-Age
X-Server
X-Cache-Group
X-Robots-Tag
Feature-Policy
X-Proxy-Cache
Xkey
Request-Context
X-Request-ID
X-Amz-Request-Id
X-Amz-Id-2
EagleId
X-Hacker
X-Page-Speed
X-Server-Powered-By
X-UA-Device
X-Nginx-Cache-Status
X-Pingback
Grace
Server-Timing
X-Varnish-Cache
X-Swift-SaveTime
X-Swift-CacheTime
X-LiteSpeed-Cache
Ali-Swift-Global-Savetime
Report-To
X-Amz-Version-Id
X-WebKit-CSP
X-Dns-Prefetch-Control
Cf-Railgun
X-Rq
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Server-Id
X-Origin-Cache
EagleEye-TraceId
X-OneAgent-JS-Injection
X-Host
Surrogate-Control
X-Device
X-Response-Time
X-Vhost
X-Backend-Server
X-Cache-Lookup
X-Ac
X-Readtime
X-Node
NEL
X-Origin-Upstream-Status
X-Dispatcher
X-HW
Fusion-Template-Id
Fusion-Source
Fusion-Content-Source
Fusion-Content-Id
Fusion-Component-Id
Content-Location
X-Mod-Pagespeed
Request-Id
X-DataDome
X-Application-Context
X-ORACLE-DMS-ECID
X-Akam-SW-Version
Fusion-Deployment-Id
X-Country
X-ORACLE-DMS-RID
Allow
X-Ruxit-JS-Agent
X-EdgeConnect-MidMile-RTT
X-Cloud-Trace-Context
X-EdgeConnect-Origin-MEX-Latency
Rating
X-Country-Code
X-Cnection
X-Url
Edge-Control
X-Clacks-Overhead
X-Rack-Cache
X-Px
RTSS
MS-Author-Via
X-FTR-Request-ID
X-Vname
X-PC
X-TtlSet
X-Goog-Hash
Accept-CH
X-Pass-Why
X-Powered-By-Plesk
Verso
Service-Worker-Allowed
X-B3-TraceId
X-Varnish-TTL
Public-Key-Pins
Accept-CH-Lifetime
X-Kinja
X-GoogleNews-Bot
X-Exp-Variant
X-Kinja-Build
X-Kinja-Server
X-Use-Magma
X-Exp-Id
X-Kinja-Revision
X-Cdn-Fetch
X-GitHub-Request-Id
X-MS-InvokeApp
Arr-Disable-Session-Affinity
Display
Pagespeed
X-Middleton-Response
X-Sol
Response
X-Middleton-Display
X-DynaTrace
X-Forwarded-Proto
X-Amz-Server-Side-Encryption
X-Cache-TTL
Accept-Ch
X-D2id
X-Amz-Rid
Pinterest-Generated-By
X-CST
TCN
X-NF-Request-ID
X-Abt-Application-Version
X-Vcap-Request-Id
X-Content-Type
X-Cached
X-VARITI-CCR
X-Ttl
Accept-Ch-Lifetime
AR-ATIME
AR-Request-ID
AR-PoweredBy
X-Navigation-Version
AR-CACHE
Ar-Sid
Cache-Tag
X-ESI
X-Fastly-Request-ID
X-Version
X-Server-Name
X-Instart-Request-ID
X-Upstream
X-Powered-CMS
X-TEC-API-VERSION
X-TEC-API-ROOT
X-TEC-API-ORIGIN
X-Grace
Host-Header
Access-Control-Request-Method
X-Debug
X-MSEdge-Ref
X-Accel-Expires
X-XRDS-Location
Charset
Nginx-Cache
X-Server-ID
SPIisLatency
Content-MD5
SPRequestDuration
MRF-Tech
S
X-Mrf-Section-Lastmod
X-Mrf-Item-Lastmod
Mrf-Cache-Status
X-B3-TraceId-Primal
Realpath
X-Ezoic-Cdn
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Element-Page-Cache
SPRequestGuid
X-SharePointHealthScore
X-DynaTrace-JS-Agent
X-Pinterest-Rid
Pinterest-Version
X-Shield-Request-Id
X-FastCGI-Cache
X-Jurisdiction
X-Hp-Webp
X-Oneagent-Js-Injection
X-Client-IP
X-Dw-Request-Base-Id
X-Amz-Meta-S3cmd-Attrs
X-Id
X-Recruiting
X-Trace
X-TTL
X-Kinsta-Cache
X-T
X-Node-Name
Fastcgi-Cache
X-Content-Digest
X-Logged-In
X-Cache-Key
X-NWS-LOG-UUID
X-Mobile-URL
TP-L2-Cache
TP-Cache
Server-Node
X-Request-Received
X-Request-Processing-Time
X-Cache-Hit
X-Frontend
X-Cache-Age
ServerID
X-Country-Code-Real
X-Amzn-Trace-Id
X-Hostname
X-FTR-Backend
Front-End-Https
X-FTR-Realm
X-FTR-DC
X-FTR-Cache-Status
X-FTR-Balancer
X-FTR-Backend-Server
Edge-Cache-Tag
X-FTR-Expires
X-Goog-Stored-Content-Length
X-Goog-Metageneration
X-Goog-Stored-Content-Encoding
X-GUploader-UploadID
X-Goog-Storage-Class
X-Goog-Generation
X-Forwarded-For
Server-Name
Fastly-Restarts
X-Yandex-Sdch-Disable
PB-PID
Arc-Version
PB-RID
Powered
X-Microsite
X-Request-Handler-Origin-Region
DynaTrace
X-Zen-Fury
Filters
X-Content-Security-Policy-Report-Only
X-DIS-Request-ID
X-User-Agent
X-Revision
X-Page-Id
X-F-Cache
X-Jobs
X-Ruxit-Js-Agent
X-Akamai-Edgescape
X-LB-Cache
X-Hits
X-Mobile-Rewrite
X-ORACLE-APMCS-REQUEST-ID
X-ORACLE-APMCS-TAG
Accept-Charset
X-HS-Hub-Id
X-HS-Combine-CSS
X-HS-Cache-Config
X-HS-Content-Id
X-Content-Powered-By
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Geo-Country
X-Origin-Server
X-Cdn
X-Varnish-Age
X-ATS-Timestamp
Backend-Timing
AMP-Access-Control-Allow-Source-Origin
X-N
X-Correlation-Id
Alternate-Protocol
X-B
X-FTR-Cache-Host
X-Erf-Bev-Bev
X-Erf-Bev-Bev-Is-Generated
X-Via-JSL
X-Daa-Tunnel
MicrosoftSharePointTeamServices
X-Varnish-Backend
Cache-Tags
X-Rid
X-Fastcgi-Cache
X-Az
X-AppVersion
X-Activity-Id
X-WebKit-CSP-Report-Only
DC
X-Type
X-Esi
X-RateLimit-Remaining
Surrogate-Key
X-Amz-Replication-Status
X-FB-Debug
Paypal-Debug-Id
X-Whom
X-Git-Hash
X-B-Cache
X-Signature
Retry-After
X-TT
Section-Io-Cache
X-Debug-Info
X-Varnish-Grace
X-ATG-Version
X-Status
Host
X-Edge
X-App-Environment
X-Ser
X-Content-Options
Frame-Options
Actual-Object-TTL
X-App-Server
X-Request-Guid
Fastcgi-Useragent
X-Amzn-RequestId
X-Contextid
X-IPLB-Instance
Nel
X-AOL-HN
Healthy
X-Endurance-Cache-Level
X-HTML-Minification-Powered-By
X-Cache-Action
Srv
X-Seen-By
X-ECACHE
X-B3-Sampled
X-Pinterest-Direct
X-Host-Name
Refresh
From-Origin
X-Upgrade-Enabled
X-Amz-Apigw-Id
Access-Control-Allow-Method
X-Drupal-Cache-Tags
X-Tumblr-User
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Cache-Rule
Source
X-ProcessESI
X-Accel-Buffering
X-Response-Served-From
X-Instance
X-RemovedCookies
X-Cache-Operation
X-PressLabs-Stats
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
Odigeo-Trace-Id
X-Mid
X-MCACHE
X-Protected-By
X-Region
X-Cacheable-TTL
X-Rule
Payment
X-Environment-Context
X-L-Path
Eomportal-Instance
MS-CV
X-UUID
X-Time
X-FW-Static
X-FW-Type
X-FW-Server
X-FW-Serve
X-FW-Dynamic
X-Varnish-Server
X-FW-Hash
X-Rendered-As
X-Is-Bot
X-WA-Info
Datacenter
X-Cache-Time
X-Adobe-Loc
Countrycode
Content-Disposition
X-Adobe-Content
Cache-Status
X-Litespeed-Cache
Xserver
X-Cache-Control
X-Cache-Server
X-VCache
X-GeoIP
X-Akamai-Transformed
X-Akamai-Request-ID2
X-Cached-By
X-UnsetCookies
X-Proxy
Uber-Trace-Id
X-Load-Cache
X-EdgeConnect-Cache-Status
X-Correlation-ID
X-Mobile
X-SERVER-NAME
X-Release
X-Yottaa-Optimizations
X-Wix-Request-Id
X-Yottaa-Metrics
X-Tt-Trace-Tag
X-Origin-Response-Time
X-Tt-Trace-Host
Access-Control-Request-Headers
X-Mode
Version
X-PHP-Backend
X-NewRelic-App-Data
X-Azure-Ref
X-Handled-By
NGB
X-Cluster
X-NWS-UUID-VERIFY
X-IPS-LoggedIn
X-NGENIX-Cache
Accept-Language
X-URL
Liferay-Portal
Filterid
X-Ua
X-Backend-Name
X-Cache-NGX
X-Air-Hostname
X-Cache-Remote
X-Tumblr-Pixel-2
X-Tumblr-Pixel-1
X-Zipkin-Id
X-LJ-Flow-ID
X-Via-Fastly
X-No-Session
X-UPSTREAM-Address
X-Path-Route
X-UA-Device-Type
X-VWS-Id
X-CSRF-Token
X-CCM
X-FireWall-Port
Load-Balancing
X-ES-SERVER
X-Adobe-Source
X-Proxied
X-Routing-Service
Cross-Origin-Window-Policy
X-Framework
X-RN-RSRV
X-ApacheServer
X-Cache-Status-Check
X-Cache-Var
Meta-Geo
X-Cache-Var-Map
X-AWS-Id
X-PERF
X-PCL
Cache-Hits
DSUID
X-R9-Blue-Green-Version
X-Qloud-Router
Mn-Server-Ip
X-MP-GENERATED-AT
ServedBy
X-OCL
X-Storage
X-RequestSource
X-Locale
X-TX-ID
X-Viewer-Country
X-Www-Served-By
Now
X-Pubstack
X-RTag
Akamai-GRN
Cache-Name
Cleartype
Section-Io-Id
Section-Origin-Responded
X-Cache-Config
X-Site-Version
X-Format
X-Bc-Bl
X-Access
Section-Io-Origin-Time-Seconds
X-Section
X-Real-IP
Section-Io-Origin-Status
Ms-Operation-Id
Decoy-Debug-TTL
Decoy-Debug-Status
Decoy-Debug-Key
TWC-GeoIP-Country
TWC-Device-Class
TWC-GeoIP-LatLong
TWC-Locale-Group
Webcakes-App-Name
TWC-Privacy
TWC-Connection-Speed
Fastly-SSL
Property-Id
X-ProxyCache-Status
X-Sorting-Hat-PodId
X-ShopId
Webcakes-App-Version
X-Shopify-Stage
Webcakes-Region
X-CS
X-Web-Node
X-Varnish-Cache-Hits
X-Device-Type
X-EIG-Tracking-Id
X-Origin-Hint
X-FW-Version
X-SayCDN-TTL
X-BYPASS-REASON
X-ProxyCache-Key
Webserver
X-Redis-Cache
X-Alternate-Cache-Key
X-Say-TTL
X-Say-Cacheable
X-NCache
X-Sorting-Hat-ShopId
X-ServerID
X-ShardId
X-Human
Cache
X-Info
X-Detected-As
X-Cache-Enabled
X-BCube-Filmed-By
X-FC-Vary-Parameters
X-Origin
X-Timing-Wait
X-Time-Microsecs
X-Content-Age
X-SaId
X-APP-VERSION
X-NYM-Debug-Backend
X-JoinUs
X-Hl-Ver
S-Rt
X-FB-TRIP-ID
X-From
Cache-Tv-Group
X-Proxy-Build
Selected-Fe
X-PHP-Host
X-Labrador-Cache-Channel
X-TNCMS
DB-Nickname
X-Loop
X-IP
X-Generated
X-Amzn-Remapped-Content-Length
X-RateLimit-Limit
X-Cache-Host
X-Geo
X-Hyper-Cache
X-Hosted-By
X-XRDS-LOCATION
Azure-SlotName
X-Xfnlog-Site
Azure-Version
Azure-RegionName
Azure-SiteName
Azure-InstanceId
Origin-Cache-Control
Origin-Edge-Control
X-Goog-Meta-Goog-Reserved-File-Mtime
Country
Server-Info
Geo-Info
Ec-Rule-Version
X-Drupal-Cache-Contexts
X-Unique-Id
X-Cache-2
X-Pad
User-Agent
SD-X-WS
X-Urbn-Context-Path
X-Cache-TTL-Remaining
Time
Locale
X-Urbn-Site-Id
X-Source
X-Old-Content-Length
X-Cache-NE
X-Varnish-Hostname
X-Cluster-Node
X-EC-Lua
Apigw-Requestid
Upgrade-Insecure-Requests
FilterID
X-Parent-Response-Time
NR-ENABLED
WPE-Backend
X-RCS-CacheZone
X-Akamai-Request-ID
X-Debug-Cache
X-Webkit-CSP
X-App-Version
X-Cache-Backend
X-Soup
X-Presslabs-Stats
Proxy-Connection
X-Vcache
X-Srv
X-CDN-Forward
X-Backend-TTL
X-Cache-Grace
X-Proxy-Cache-Status
X-Tb
X-Forwarded-Host
X-DC
X-Proto
X-FORWARDED-FOR
X-Cache-PHP
X-Nc
S-Cnection
X-Tumblr-Pixel-3
X-Newrelic-Synthetics
X-Accel-Expires-Debug
X-A-Wwc
VivaBuild
X-Aed
Who
X-A
X-A-Dam
X-A-Dcw
Viewtype
X-A-Ccd
X-A-Dgt
Pagetype
FNAC-ModuleRouting
GEO-REGION-INFO
IsBot
M-TraceId
Fastcgi-X-Cache-Version
Content-Style-Type
Arc-Country
AsisCache
BehaviorPad-Version
Content-Script-Type
Machine
MD5-Digest
T-Server
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
Thinkindot-Control
ServerName
Server-Host
Meta-Geo-Continent
Mobile-Detection-Method
X-Application
Rendered-Blocks
UCS
X-DevSite-Last-Modified
X-Session-Fingerprint
X-SIPLIST1
X-SRCache-Key
X-Swa-Ws
X-ServiceProvider
X-ScT
X-Rojux
X-S
X-S-Cookie
X-Scheme
X-Thinkindot-L3
X-Trace-Id
X-VG-WebServer
X-Vtex-Processado-Em
X-Vtex-Remote-Cache
Xc-Version
X-VG-WebCache
X-Vdms-Version
X-Transaction
X-Trv-Group
X-Twitter-Response-Tags
X-Vdms-Path
X-Rewrite-Enabled
X-Reqid
X-Destination
X-Developer
X-Dispatch
X-External-Request-Id
X-Date
X-D
X-B-Cookie
X-CF-Lambda-Fn
X-CF-Lambda-Version
X-Connection-Hash
X-G
X-Generated-On
X-NodeID
X-PAYTM-SRV-ID
X-Processor
X-Region-Sid
X-Nginx-Cache-Key
X-Method
X-Geo-Header
X-Level-Front-Cache
X-Matched-Rule
X-ARC
True-Client-Country-4JS
X-Uri
NGX
X-AIR-PT
X-Ah-Environment
Cache-Key
OT-Force-Account-Verify
X-Cluster-Name
X-Agile-Id
X-Bip
X-Agile-Age
Kp-EeAlive
X-SRV
X-Branch-Name
X-Agile
X-Cms-Context
X-Device-Os
X-Dispatcher-Server
X-Developers
X-Core-Value
Wxu-Next-Region
X-Compress-Hint
X-Cache-FS-Status
Wxu-Next-Commit
NM-Fastcgi-Cache
RNT-Machine
Sever-Int
On-Server
Server-Hostname
RNT-Time
V-Age
Viewport
We-Hiring
Server-Ext
X-Generated-In
Magicmarker
Vix-Hermes-Req-Id
Mail-Subject
Wxu-Next-Hostname
X-Hash
X-App
X-Req
X-Skip-Cache
X-RateLimit-Remaining-Second
AKAMAI
Apple-News-Services-Host
Apple-News-Services-Handled
X-SN
X-Thanos
N-Cache
X-Response-By
X-SD-PageType
X-Worker
X-VC-Cache
X-User
X-Varnish-Cacheable
Apple-News-Services-Parsed-Url
Apple-News-Services-Request-Url
CDCHOST
CacheControlHeader
X-Logging-Id
X-Location
Release
X-LAGOON
X-Node-Id
Cache-Cookie-Set-Lfrom
X-Policy
X-RateLimit-Limit-Second
X-Generation-Time
X-Owner
Cache-Cookie-Set-Idcheck
Cache-Cookie-Set-From
Sid
Cf-Ipcountry
X-Envoy-Decorator-Operation
X-Storefront-Renderer-Rendered
User-Cache-Control
X-Hit
Fastly-SWR
X-Wikidot-Backend
X-Core-Mission
X-Wikidot-Static-Cache
X-Distil-CS
X-Epic-Correlation-Id
X-Distributor
Gh-Request-Id
Fastly-SIE
X-TA-CDN-Provider
HA-Ipaddr
X-Backend-State
X-Auto-Login
X-Block-Status
Ha-Gx-Prefs
X-Cache-Debug
X-Eu-Site
Web-Mar-Node
X-Cache-Tags
X-CGP
Fastly-Drupal-HTML
X-Origin-Expires
X-Origin-Date
X-Server-W
C-Via
Adler-Geo
X-Request-UUID
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-Servername
X-NC
X-Var-Ttl
X-Variation
X-Cache-Bucket
X-Has-Esi
X-TH-Server
X-Magnolia-Registration
X-JWT-State
X-Is-Gdpr
X-VG-TLSProxy
X-Clientip
X-Clara-WADP
W
X-Micro-Cache
X-Cache-Info
X-Be
L5d-Success-Class
X-Fmm-Version
Rt-Fastcgi-Cache
X-Gen-Mode
X-Loc
X-Cache-URL
Is-Eu
X-WADP-Cache
X-Microcachable
Platform
X-Hnp-Log
X-Origin-TTL
X-Origin-CC
X-Esi-Check
X-Mvc-Supplant-Cachable
LB
X-Irp-Debug
X-Reboot
X-Slack-Backend
X-Request-Host
X-Fastly-Cache
X-Cache-Id
X-Instart-Info
X-Webstats-RespID
X-Gzip
X-VServer
X-We-Are-Hiring
X-BBXSRF
X-TrackingId
X-Cache-ASPX
X-Backend-Host
X-Varnish-Authentication
X-Contensis-Viewer-Groups
Node
X-Varnish-Beresp-Status
X-Varnish-Beresp-Grace
X-Varnish-Beresp-Ttl
X-LI-Proto
X-Configured-By
X-Li-Pop
X-Li-Fabric
X-Dc
X-LI-UUID
X-Via-PopV
X-Wa
X-GoCache-CacheStatus
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
X-Platform-Server
Memcached
X-NU-AKA-ACS-Version
X-Via-PopH
X-Cdn-Forward
X-SERVER
X-Edge-Location
X-Key
X-Ms-Version
X-Envoy-Upstream-Healthchecked-Cluster
X-TT-TIMESTAMP
HostName
X-Ms-Request-Id
Referer-Policy
X-Varnish-URL
Pragrma
X-BC
X-ZONE
NtCoent-Length
X-Vgn-Hpd-Reason
Esi-Enabled
MIME-Version
X-Servedbyhost
Tracecode
X-Refresh
X-Ua-Device
L
CACHE
Fastly-Backend-Name
Server-ID
X-Via-CDN
X-App-Name
X-B3-Traceid
GEO-INFO
X-UA
Ohc-File-Size
X-Mvc-Supplant-OutputCached
X-Server-IP
X-MSEdge-Flight
X-MSEdge-Features
X-Nginx-Cache
Cache-Host
X-Up
X-BACKEND-TTL
X-Zone
X-Bc
X-Minions-Version
Memory
X-Batcache
X-Unique-ID
X-TIME
Server-Cache-Control
X-Svr
X-Pjax-Url
X-ElasticPress-Query
X-Debug-Panamera-Host
X-ND-Cache
X-VCL-Version
X-Cdn-Srv
X-Debug-Panamera-Sitecode
Server-Surrogate-Control
X-S-Maxage
X-Aicache-OS
X-COUNTRY
X-Generated-By
Ohc-Response-Time
X-VCT
X-Sucuri-ID
X-CF-Powered-By
X-Oss-Storage-Class
X-Oss-Server-Time
X-Oss-Request-Id
X-Oss-Object-Type
X-Oss-Hash-Crc64ecma
FSS-Cache
X-FPC
GeoIP-Country-Code
Resin-Trace
X-GEO
DCR-Processing-Time-Ms
DCR-Decision-By
X-Rocket-Nginx-Bypass
GeoIP-Latitude
Hostname
Heartbleed
X-Fastly-Cache-Status
Locid
Request-Country
X-PF-Uncompressing
Pramga
Powered-By-ChinaCache
Location
X-BE
Request-EU
X-Varnish-Hits
X-Azure-Ref-OriginShield
X-Check-Cacheable
X-Varnish-Ttl
X-Request-URI
HitType
Cteonnt-Length
Amp-Access-Control-Allow-Source-Origin
Lfy
X-LB-ID
Cdn-Request-Time
X-Varnishpool
X-Gamma-Serve
X-Edge-Server
Cdn-Host
X-Fpc
X-Ratelimit-Reset
X-Shopify-Generated-Cart-Token
X-VHOST
X-OVcl-Cache
X-PJAX-URL
PFcat
X-Vgn-Hpd-Variations-Key
X-Fastly-Country-Code
X-OVcl
X-Vgn-Hpd-Ssi
X-VarnishDD-TTL
X-Newrelic-App-Data
X-Vgn-Hpd-Cached
X-Sucuri-Cache
WZWS-RAY
CF-Cached-On
X-CSRF-TOKEN
X-Fastly-Backend-Reqs
GeoIp-Country-Code
X-HS-Status
X-Instart-Isnd
Geoip-Latitude
X-WebServer
X-Platform
SRV
X-Render-Time
X-Pf-Uncompressing
X-Vcl-Version
X-Cache-Expired-At
Mime-Version
X-Proxy-Upstream
Product
X-Ratelimit-Remaining
X-Client-Ip
X-Fetched-On
X-Cdn-Origin
X-Ftr-Cache-Host
X-Oracle-Dms-Rid
SN
X-CACHE-AGE
X-Original-Request-Id
My-App
X-CLOUD-TRACE-CONTEXT
X-Sn-Servicetimems
Ohc-Cache-HIT
X-Amzn-Remapped-Connection
X-Amzn-Remapped-Date
X-NGINX-Cache
X-CACHE-KEY
X-CUA
X-ECache
WWW-Authenticate
X-GeoIP-Country-Code
X-Ratelimit-Limit
URI
Dt-Cache-Category
XServer
X-ServedByHost
X-Varnish-Url
Pics-Label
Epwk-X-Cache
A
X-B3-SpanId
X-Request-Start
X-StackifyID
X-Tec-Api-Version
X-Tec-Api-Root
X-Tec-Api-Origin
CloudFront-Viewer-Country
X-Oss-Cdn-Auth
X-Swift-Error
X-Cache-Tag
Cdn
Backend
X-RunCloud-Cache
X-Debug-Cache-Fetch
X-B3-Spanid
Backend-Name
X-Served-From
Group
X-Debug-Cache-Store
X-WR-MODIFICATION
Lb
Cloudfront-Viewer-Country
X-Via-Poph
X-Via-Popv
X-Csrf-Jwt
PICS-Label
Server-Ttl
Cf-Alt-Svc
SID
X-LiteSpeed-Cache-Control
X-Apw-Access-Action
X-Nananana
X-Debug-Ysi-Auth
X-Debug-Xas-Auth
X-Debug-Cache-Status
X-Debug-Cache-String
X-Debug-Do-Not-Cache-Uri
X-Debug-Cache-Bypass
X-Apw-Access-Object
X-Apw-Hits
X-Tb-Optimization-Total-Bytes-Saved
X-Apw-Access-Token
X-Cache-Version
X-Via-Ucdn
X-Cache-Hfrom
X-Varnish-Beresp-TTL
Origin
Proxy-Firewall
X-WA
X-Request-Time
X-Acquia-Purge-Tags
X-Acquia-Site
Cneonction
X-Cache-Hm
X-Acquia-Application-Trace
X-Acquia-Application-UUID
X-Sigma-Backend
Inserted-Into-Cache-At
X-SB
Req-ID
Warning
X-Sigma
X-Dw-Trace-Id
CF-IPCountry
X-Rocket-Build-Number
X-Snapshot-Date
X-IN-APIGATEWAY
X-Html-Edge-Cache
X-ElasticPress-Search
X-VC
X-Request-URL
Country-Code
X-B3-Parentspanid
X-Varnish-ID
X-IN-APIGATEWAYSSL
NnCoection
X-Via-NSCOPI