Threat Level: green Handler on Duty: Xavier Mertens

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
Content-Length
X-Frame-Options
Strict-Transport-Security
X-Content-Type-Options
Accept-Ranges
Last-Modified
CF-RAY
CF-Cache-Status
Pragma
Link
X-Powered-By
ETag
Expect-CT
X-XSS-Protection
Via
X-Cache
Age
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
P3P
X-UA-Compatible
X-Cache-Hits
X-Amz-Cf-Pop
X-Amz-Cf-Id
Referrer-Policy
X-Served-By
X-Xss-Protection
X-Varnish
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Request-Id
Alt-Svc
X-Download-Options
X-AspNet-Version
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Runtime
X-Drupal-Cache
X-Adblock-Key
X-Check
X-Request-ID
X-Generator
Content-Security-Policy-Report-Only
X-Cache-Status
X-Cacheable
X-Permitted-Cross-Domain-Policies
X-DNS-Prefetch-Control
Timing-Allow-Origin
X-Iinfo
X-Template
X-Language
X-AspNetMvc-Version
Status
X-Content-Security-Policy
X-Buckets
Content-Encoding
Access-Control-Expose-Headers
Upgrade
X-CDN
Xkey
Access-Control-Max-Age
Keep-Alive
X-Kinja-Server-Push
X-Drupal-Dynamic-Cache
X-Turbo-Charged-By
X-Via
X-AH-Environment
X-Ua-Compatible
X-Cache-Group
X-Age
X-Pass-Why
X-Backend
X-Envoy-Upstream-Service-Time
EagleId
X-Server
X-Amz-Request-Id
X-Amz-Id-2
X-Robots-Tag
X-Page-Speed
X-Pingback
X-Server-Powered-By
X-UA-Device
X-Proxy-Cache
X-Swift-SaveTime
X-Swift-CacheTime
X-Hacker
X-Nginx-Cache-Status
Ali-Swift-Global-Savetime
Request-Context
Grace
X-Varnish-Cache
Server-Timing
Feature-Policy
Cf-Railgun
X-Amz-Version-Id
X-LiteSpeed-Cache
X-Device
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-WebKit-CSP
X-Rq
Report-To
X-Server-Id
EagleEye-TraceId
X-Ac
X-Response-Time
X-Host
X-OneAgent-JS-Injection
Request-Id
X-Cnection
X-Backend-Server
X-DataDome
X-Node
Content-Location
X-Origin-Cache
X-Cloud-Trace-Context
X-Dns-Prefetch-Control
X-Readtime
X-Cache-Lookup
X-Cdn
NEL
X-Ws-Request-Id
X-Vhost
X-Application-Context
X-Dispatcher
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-HW
Allow
X-Clacks-Overhead
X-Rack-Cache
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Origin-Upstream-Status
X-DynaTrace
Surrogate-Control
Rating
X-FTR-Request-ID
X-Country
Fusion-Content-Source
Fusion-Source
Fusion-Content-Id
Fusion-Template-Id
Fusion-Component-Id
X-Country-Code
X-Akam-SW-Version
X-Goog-Hash
Pinterest-Generated-By
X-Instart-Request-ID
X-Varnish-TTL
X-Vname
X-Ruxit-JS-Agent
X-PC
X-TtlSet
Edge-Control
X-MS-InvokeApp
X-Mod-Pagespeed
SPRequestGuid
X-B3-TraceId
Verso
X-Powered-By-Plesk
X-Url
X-D2id
X-Trace
X-Middleton-Response
X-SharePointHealthScore
Response
Pagespeed
X-Sol
X-Middleton-Display
Display
X-VARITI-CCR
Service-Worker-Allowed
X-Server-Name
RTSS
X-GoogleNews-Bot
X-Exp-Variant
X-Kinja
X-Exp-Id
X-Kinja-Build
X-Use-Magma
X-Kinja-Server
X-Kinja-Revision
X-Cdn-Fetch
X-GitHub-Request-Id
X-ESI
Content-MD5
X-TTL
Accept-Ch
SPRequestDuration
SPIisLatency
X-Navigation-Version
X-Powered-CMS
X-Vcache
X-Abt-Application-Version
X-Debug
X-Amz-Server-Side-Encryption
X-Vcap-Request-Id
Charset
X-CST
X-Server-ID
MS-Author-Via
Public-Key-Pins
X-Forwarded-Proto
X-Cached
X-Upstream
DynaTrace
X-NF-Request-ID
X-Amz-Rid
Realpath
X-Version
Edge-Cache-Tag
X-Px
Accept-Ch-Lifetime
MicrosoftSharePointTeamServices
X-Shard
TCN
Arr-Disable-Session-Affinity
X-Ezoic-Cdn
Pinterest-Version
X-Pinterest-Rid
Fastly-Restarts
X-MSEdge-Ref
X-Shield-Request-Id
Access-Control-Request-Method
X-DynaTrace-JS-Agent
X-Ser
X-XRDS-Location
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Trafficlayer-App-Name
X-Trafficlayer-App-Scope
X-Fastly-Request-ID
S
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-Accel-Expires
X-Recruiting
X-DIS-Request-ID
Front-End-Https
X-Goog-Metageneration
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Client-IP
X-Amz-Meta-S3cmd-Attrs
Nginx-Cache
X-T
X-Id
X-Varnish-Age
X-Goog-Storage-Class
X-Element-Page-Cache
MRF-Tech
Mrf-Cache-Status
X-Mrf-Item-Lastmod
X-B3-TraceId-Primal
X-Mrf-Section-Lastmod
X-FTR-Backend-Server
X-Country-Code-Real
X-FTR-Balancer
X-FTR-Backend
X-FTR-Cache-Status
X-FTR-DC
X-FTR-Realm
X-Amzn-Trace-Id
X-FTR-Expires
Cache-Tag
X-Dw-Request-Base-Id
X-Webapp-Samesite-None-Activated-N
Fastcgi-Cache
X-HS-Hub-Id
X-HS-Cache-Config
X-HS-Content-Id
X-Content-Digest
X-Frontend
NR-ENABLED
X-Hits
Powered
X-Ttl
X-Correlation-Id
X-Fastcgi-Cache
X-Kinsta-Cache
Accept-CH
X-RateLimit-Remaining
X-FTR-Cache-Host
Alternate-Protocol
Accept-CH-Lifetime
X-Hp-Webp
X-Aspnetmvc-Version
X-Webkit-Csp
ServerID
X-Request-Processing-Time
X-Request-Received
X-N
X-Cache-Hit
X-Grace
X-Microsite
X-Node-Name
Server-Name
X-Request-Handler-Origin-Region
PB-PID
PB-RID
X-HS-Combine-CSS
Arc-Version
TP-L2-Cache
X-Mobile-Rewrite
TP-Cache
AMP-Access-Control-Allow-Source-Origin
X-Content-Type
X-User-Agent
X-Rid
X-Zen-Fury
Healthy
X-Analytics
Backend-Timing
X-Revision
X-Akamai-Edgescape
Server-Node
X-Content-Security-Policy-Report-Only
X-Logged-In
X-LB-Cache
X-Pad
X-Activity-Id
X-Forwarded-For
X-AppVersion
X-Az
X-Amz-Apigw-Id
Cache-Status
X-Amzn-RequestId
X-FastCGI-Cache
X-Oneagent-Js-Injection
X-Mobile-URL
X-Cached-By
X-NWS-LOG-UUID
X-Varnish-Grace
AR-PoweredBy
AR-ATIME
X-IPLB-Instance
AR-CACHE
X-GUploader-UploadID
Retry-After
X-Type
X-B3-Sampled
Refresh
X-Content-Options
X-Ruxit-Js-Agent
X-Litespeed-Cache
X-F-Cache
X-Geo-Country
Upgrade-Insecure-Requests
Paypal-Debug-Id
Ar-Sid
X-App-Environment
FilterID
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Srv
X-Tumblr-User
X-Instance
X-Varnish-Backend
X-Debug-Info
DC
Source
X-PHP-Backend
X-Request-Guid
Host
X-Framework
X-B
X-Page-Id
X-Jobs
Actual-Object-TTL
X-AOL-HN
Access-Control-Allow-Method
X-FB-Debug
Accept-Charset
X-Via-JSL
X-Cluster
X-Cache-Age
X-WebKit-CSP-Report-Only
X-ATG-Version
X-Cache-Key
X-Seen-By
X-Erf-Bev-Bev-Is-Generated
X-Erf-Bev-Bev
X-Cache-2
Fastcgi-Useragent
X-TT
X-Git-Hash
MS-CV
Cache
X-Content-Powered-By
X-Cache-TTL
X-Whom
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
AR-Request-ID
X-PressLabs-Stats
X-UA
X-Amz-Replication-Status
X-Cache-Control
X-Esi
X-TA-CDN-Provider
X-B-Cache
X-Signature
Host-Header
X-Wix-Request-Id
X-Host-Name
Surrogate-Key
X-Response-Served-From
NGB
X-Daa-Tunnel
X-Cache-Enabled
Frame-Options
X-Origin-Server
X-RequestSource
X-FW-Type
X-Mobile
Cache-Tv-Group
X-FW-Static
X-FW-Server
WPE-Backend
X-FW-Hash
X-FW-Serve
Filters
X-Tumblr-Pixel-2
X-GeoIP
X-Handled-By
X-Drupal-Cache-Tags
X-Tumblr-Pixel-1
X-TX-ID
X-Cache-Operation
X-Cache-Rule
X-Cacheable-TTL
X-Cache-Action
Eomportal-Instance
Payment
X-Hyper-Cache
X-Kong-Upstream-Latency
X-Region
X-Kong-Proxy-Latency
X-SERVER
X-Adobe-Loc
X-EdgeConnect-Cache-Status
Cleartype
X-Cache-NE
X-Adobe-Content
Webserver
From-Origin
X-RemovedCookies
Xserver
X-UA-Device-Type
X-ProcessESI
X-Forwarded-Host
X-Akamai-Transformed
X-Hostname
X-Load-Cache
Datacenter
Ms-Operation-Id
X-RTag
X-NewRelic-App-Data
X-Cache-TTL-Remaining
X-Edge-Location
X-Time
X-Cache-Server
X-ATS-Timestamp
Liferay-Portal
X-App-Server
X-Contextid
X-Status
X-Yottaa-Metrics
X-Yottaa-Optimizations
X-Varnish-Hostname
Tracecode
X-Varnish-Server
X-URL
X-Rule
Odigeo-Trace-Id
X-TT-TIMESTAMP
X-BCube-Filmed-By
Country
X-Path-Route
X-RN-RSRV
Meta-Geo
Load-Balancing
X-Cache-Var-Map
X-ES-SERVER
X-Cache-Var
X-Viewer-Country
X-Upgrade-Enabled
X-Xfnlog-Site
X-Oss-Request-Id
X-Oss-Object-Type
X-Oss-Hash-Crc64ecma
X-Debug-Cache
X-Oss-Storage-Class
X-Oss-Server-Time
X-CCM
Webcakes-Region
Cache-Tags
Property-Id
Webcakes-App-Name
Release
X-Origin-Hint
TWC-Privacy
X-OCL
Server-Info
Webcakes-App-Version
Mn-Server-Ip
DB-Nickname
X-R9-Blue-Green-Version
X-UUID
TWC-GeoIP-Country
TWC-Device-Class
TWC-Connection-Speed
X-Pubstack
TWC-GeoIP-LatLong
X-FW-Dynamic
X-PCL
TWC-Locale-Group
DSUID
X-Via-Fastly
X-VCT
X-Varnish-Cache-Hits
X-Origin-Response-Time
Azure-RegionName
Azure-SiteName
X-Human
Fastly-SSL
Azure-Version
Azure-InstanceId
X-ORACLE-APMCS-REQUEST-ID
X-Cache-Host
Azure-SlotName
Cache-Name
X-Cache-Time
X-Cache-Config
X-From
X-ORACLE-APMCS-TAG
X-Rocket-Nginx-Bypass
X-Soup
S-Rt
X-Akamai-Request-ID2
X-Labrador-Cache-Channel
X-EIG-Tracking-Id
NGX
X-Redis-Cache
X-Drupal-Cache-Contexts
X-Akamai-Request-ID
X-Web-Node
X-IP
X-Origin
X-Access
X-Format
Origin-Cache-Control
Decoy-Debug-TTL
Ec-Rule-Version
Decoy-Debug-Status
Decoy-Debug-Key
Origin-Edge-Control
X-ApacheServer
S-Cnection
X-Hosted-By
X-Rendered-As
X-Proxy
X-Www-Served-By
X-XRDS-LOCATION
X-Site-Version
X-PERF
X-Real-IP
X-NWS-UUID-VERIFY
L5d-Success-Class
X-Section
X-Locale
X-Loop
X-Proto
X-TNCMS
X-FC-Vary-Parameters
X-ServerID
Viewport
X-FireWall-Port
Version
X-Content-Age
X-VCache
X-Is-Bot
X-Time-Microsecs
Selected-Fe
X-Vgn-Hpd-Reason
X-Timing-Wait
X-Proxy-Build
X-Info
X-Varnish-Hits
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Cluster-Name
X-Storage
X-Backend-Name
X-B3-Traceid
Uber-Trace-Id
X-Generated
X-BYPASS-REASON
X-JoinUs
X-ProxyCache-Key
X-ProxyCache-Status
X-RateLimit-Limit
X-Generated-By
X-Origin-CC
X-Origin-TTL
X-Cache-Backend
X-PHP-Host
Rt-Fastcgi-Cache
X-Accel-Buffering
X-Amzn-Remapped-Content-Length
Akamai-GRN
Cteonnt-Length
Cache-Key
X-Presslabs-Stats
Time
GEO-INFO
X-App-Version
X-WA-Info
X-Guploader-Uploadid
X-Tec-Api-Origin
X-Nginx-Cache-Key
X-Tec-Api-Version
X-Tec-Api-Root
Origin
X-GoCache-CacheStatus
Cache-Hits
X-No-Session
X-SS-Set-Cookie
X-CF-Powered-By
Vix-Hermes-Req-Id
X-NCache
X-MServer
X-Backend-TTL
X-Trace-Id
X-Environment-Context
X-APP-VERSION
X-SaId
X-Geo
X-FB-TRIP-ID
X-L-Path
X-Cache-Remote
Accept-Language
X-Hit
X-Unique-Id
X-Tb
Access-Control-Request-Headers
Srv
X-CDN-Forward
X-Device-Type
X-Tumblr-Pixel-3
X-Say-Cacheable
X-Say-TTL
X-SayCDN-TTL
X-CS
X-Cache-Grace
X-B3-SpanId
X-OVcl
X-OVcl-Cache
X-CSRF-TOKEN
X-S
User-Cache-Control
X-Cluster-Node
X-CACHE-KEY
ServedBy
MD5-Digest
Machine
Meta-Geo-Continent
Mobile-Detection-Method
Node
X-A-Ccd
Rendered-Blocks
T-Server
Viewtype
VivaBuild
Server-Host
IsBot
Request-Country
Request-EU
Rt-Proxy-Cache
X-A
AsisCache
X-Shopify-Stage
X-Sorting-Hat-PodId
X-Sorting-Hat-ShopId
X-Shopify-Generated-Cart-Token
X-ShopId
X-Ah-Environment
X-Alternate-Cache-Key
X-ShardId
Apple-News-Services-Handled
Apple-News-Services-Host
Content-Script-Type
Content-Style-Type
Cross-Origin-Window-Policy
BehaviorPad-Version
X-A-Dam
Apple-News-Services-Parsed-Url
Apple-News-Services-Request-Url
Arc-Country
Fastcgi-X-Cache-Version
X-Application
X-Server-Time
X-Service
X-Session-Fingerprint
X-SIPLIST1
X-ScT
X-S-Cookie
X-Request-UUID
X-Rewrite-Enabled
X-Rojux
X-SRCache-Key
X-Svr
X-Vtex-Processado-Em
X-Vtex-Remote-Cache
Xc-Version
X-VG-WebServer
X-VG-WebCache
X-Transaction
X-Trv-Group
X-Twitter-Response-Tags
X-Region-Sid
X-Processor
X-ARC
X-B-Cookie
X-CF-Lambda-Fn
X-AIR-PT
X-Aed
X-A-Dgt
X-A-Wwc
X-Accel-Expires-Debug
X-CF-Lambda-Version
X-Connection-Hash
X-G
X-Hl-Ver
X-PAYTM-SRV-ID
X-External-Request-Id
X-Detected-As
X-D
X-Date
X-Destination
X-A-Dcw
X-DPWN-IS-SECURE
X-EC-Lua
X-Via-CDN
X-Uri
X-Dc
NtCoent-Length
ServerName
X-Block-Status
CDCHOST
Thinkindot-Control
X-Cache-Bucket
Thinkindot-CacheControl-Type
X-Webstats-RespID
We-Hiring
X-Ms-Request-Id
Mail-Subject
Cache-Host
Web-Mar-Node
Proxy-Connection
Wxu-Next-Hostname
Wxu-Next-Region
X-WADP-Cache
X-Request-URI
X-Reboot
X-RateLimit-Remaining-Second
OT-Force-Account-Verify
X-Cache-Info
Wxu-Next-Commit
X-RateLimit-Limit-Second
X-Ms-Version
Thinkindot-CacheControl
X-Matched-Rule
RNT-Time
X-Vdms-Version
Server-Int
X-Dispatch
X-Dispatcher-Server
RNT-Machine
X-Endurance-Cache-Level
X-Hnp-Log
X-Instart-Isnd
X-Thinkindot-L3
Served-By
X-Location
X-Gen-Mode
X-Generated-On
X-Clara-WADP
X-Cms-Context
X-Level-Front-Cache
X-Parent-Response-Time
X-CUA
X-Core-Value
Mime-Version
X-SRV
X-FW-Version
X-B3-Parentspanid
X-Skip-Cache
X-S-Maxage
True-Client-Country-4JS
X-Server-IP
X-Scheme
W
X-Azure-Ref
X-Cdn-Srv
X-Compress-Hint
X-Logging-Id
X-Cache-URL
X-Method
X-Cache-Id
X-JWT-State
X-Developers
X-Fastly-Cache
X-Generation-Time
X-Geo-Header
X-Has-Esi
X-Is-Gdpr
X-C
X-BBXSRF
X-Agile
X-Agile-Age
X-Reqid
X-Varnish-Beresp-Grace
X-Varnish-Beresp-Status
X-Agile-Id
X-Release
X-Azure-Ref-OriginShield
X-Backend-State
Section-Io-Cache
X-App-Name
X-Qloud-Router
X-Varnish-Beresp-Ttl
X-Sucuri-Cache
X-Hash
X-IN-APIGATEWAYSSL
Now
Fastly-Soc-X-Request-Id
AKAMAI
X-Wikidot-Static-Cache
Is-Eu
Heartbleed
X-Wikidot-Backend
X-Proxy-Upstream
X-Proxy-Cache-Status
X-SVT-ORM-RULES
X-Debug-Cookies
Content-Disposition
X-Debug-Log
X-NX-Host
Esi-Enabled
X-Cache-Debug
X-RCS-CacheZone
Kp-EeAlive
IBM-Web2-Location
X-User
X-IN-APIGATEWAY
L
X-Up
Platform
X-SVT-ORM-VERSION
X-Swa-Ws
Pramga
X-VC-Cache
X-Variation
X-VServer
X-We-Are-Hiring
Magicmarker
Memcached
X-VG-TLSProxy
Adler-Geo
X-UnsetCookies
X-Source
Hostname
Cache-Provider
X-Magnolia-Registration
X-Nc
X-NC
X-Li-Pop
X-Key
X-Irp-Debug
X-Origin-Date
X-Li-Fabric
X-Sigma
X-Thanos
X-Sigma-Backend
X-TrackingId
X-WebServer
X-Via-NSCOPI
X-Rocket-Build-Number
X-Internal-Host
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
X-Planisys-CDN-TTL
X-Policy
X-Origin-Expires
X-MSEdge-Flight
PFcat
HA-Ipaddr
X-Auto-Login
X-Bip
X-Platform-Server
Ha-Gx-Prefs
Gh-Request-Id
X-Urbn-Site-Id
X-Urbn-Context-Path
X-ServiceProvider
X-SD-PageType
Countrycode
X-Owner
X-NodeID
X-Distil-CS
X-Debug-Cache-Store
X-Eu-Site
X-Generated-In
X-GeoIP-City
X-Debug-Cache-Fetch
X-Debug-Cache-Expiry
X-CGP
X-Clientip
X-MSEdge-Features
X-Core-Mission
X-LI-UUID
X-Old-Content-Length
X-Upstream-Ht
X-Epic-Correlation-Id
X-Distributor
Cdncip
X-Cache-FS-Status
Cdnsip
X-Amz-Meta-Cache-Control
Locale
SD-X-WS
X-AK-Request-ID
X-Upstream-Ct
Powered-By-ChinaCache
X-LI-Proto
X-7Graus-Varnish-XKeys
X-ND-Cache
X-Request-Start
X-7Graus-Varnish-Cache-Control
V-Age
X-B3-Spanid
X-TIME
Server-ID
X-Servername
X-COUNTRY
CF-IPCountry
X-Cdn-Forward
X-GRACE
X-Be
X-Developer
A
X-Trafficlayer-App-Version
GEO-REGION-INFO
Environment
X-Req
X-Sn-Servicetimems
X-Sucuri-Id
Locid
X-FPC
X-Device-Os
X-Lb-Id
X-Cdn-Origin
X-Nginx-Cache
FNAC-ModuleRouting
X-VHOST
X-Newrelic-Synthetics
X-Servedbyhost
X-Node-Id
X-Served-From
X-Gamma-Serve
X-FORWARDED-FOR
Geo-Info
X-Microcachable
Tcn
X-Refresh
X-Zone
X-Sucuri-ID
X-Webkit-CSP
X-HTML-Minification-Powered-By
ProcessTime
Memory
Request-Time
X-Tb-Optimization-Total-Bytes-Saved
X-Render-Time
XServer
X-IPS-LoggedIn
X-Pf-Uncompressing
X-VCL-Version
X-VWS-Id
X-LJ-Flow-ID
Resin-Trace
X-AWS-Id
X-Pjax-Url
X-NU-AKA-ACS-Version
X-GeoIP-Country-Code
Gannett-Cam-Experience-Id
CF-Cached-On
X-Correlation-ID
X-Edge-O15-RID
MIME-Version
Amp-Access-Control-Allow-Source-Origin
Geoip-Latitude
Group
GeoIp-Country-Code
X-Ratelimit-Remaining
X-DC
X-ElasticPress-Search
X-MP-GENERATED-AT
X-Instart-Info
X-ECACHE
Geoip-City
X-Mode
TTL
X-Backend-Host
Pics-Label
X-Pod
Cf-Ipcountry
X-Backend-Url
PICS-Label
X-Var-Ttl
X-NGENIX-Cache
X-Via-SSL
Ttl
GeoIP-Latitude
GeoIP-Country-Code
X-Bc
Backend-Name
GeoIP-City
X-Via-Edge
X-CSRF-Token
X-ZONE
X-Unique-ID
X-APP
Cdn
Host-ID
M-TraceId
X-Routing-Service
Pagetype
X-Zipkin-Id
Lfy
REQUESTUUID
N-Cache
X-Proxied
X-CLOUD-TRACE-CONTEXT
Cache-Prefix
X-Check-Cacheable
X-Vcl-Version
Cache-Cookie-Set-Lfrom
Cache-Cookie-Set-Idcheck
X-Fstrz
HostName
Fly-Cache
Fly-Request-Id
Cache-Cookie-Set-From
Ohc-File-Size
Ohc-Cache-HIT
X-Via-Ucdn
X-PJAX-URL
X-Worker
X-PF-Uncompressing
X-BC
X-GEO
HitType
X-Ratelimit-Limit
X-Fastly-Country-Code
X-Cdn-Request-ID
X-Sedo-Request-Id
X-Cache-Miss-From
X-Dynatrace-Js-Agent
X-NGINX-Cache
X-Swift-Error
X-Server-W
X-Request-Time
X-Fetched-On
User-Agent
Pragrma
On-Server
X-TH-Server
X-HS-Status
URI
X-Upstream-HT
X-LiteSpeed-Cache-Control
X-HostName
X-Upstream-CT
X-ServedByHost
CDN
Fastly-SIE
X-Tt-Trace-Tag
X-UPSTREAM-Address
X-Wa
X-WR-MODIFICATION
X-Aicache-OS
X-Cache-Tag
X-Rebelmouse-Cache-Control
X-Rebelmouse-Surrogate-Control
Fastly-SWR
SRV
Powered-By
X-WA
Who
AR-SID
X-TT-LOGID
Media-Length
X-BE
X-Fpc
X-GDPR
X-Varnish-Cacheable
X-LB-ID
X-LAGOON
X-Fastly-Backend-Reqs
X-Varnish-URL
X-Cf-Powered-By
DataCenter
FSS-Cache
X-Edge-Server
CACHE
X-ServerName
Cdn-Request-Time
Debug
Server-Id
FSS-Proxy
Cdn-Host
X-Tt-Trace-Host
X-Ftr-Cache-Host
X-Ua
X-RateLimit-Reset
X-Hello
X-Gen-Id
X-ABtesting
X-Flog
X-Protected-By
X-SN
X-Akamai-ERPolicy
Is-Session-Tracking
UCS
X-Akamai-ERRuleID
Get-Access-Time
SS
X-Varnish-Beresp-TTL
LB
Processtime
X-Hp-Ccpa-Warning
WP-Super-Cache
X-Store
Xet-Cookie
X-Cache-Tags
NnCoection
Cneonction
X-RPS
X-Nananana
XxX-Cache-Status
X-SB
X-VC
Application
X-Dw-Trace-Id
X-DSS
X-DW
Thinkindot-Cache-Type
X-DI
Requestid
X-Action
Warning
X-Amzn-Remapped-Connection
X-Amzn-Remapped-Date
SN
X-Li-Proto
X-DB
X-RSL
Product
X-Org
X-LiteSpeed-Tag
X-Fastly-Cache-Hits
SID
X-RPM
X-Response-By
X-Request-Url