Threat Level: green Handler on Duty: Renato Marinho

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