Threat Level: green Handler on Duty: Jan Kopriva

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