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