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