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