Threat Level: green Handler on Duty: Johannes Ullrich

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