Threat Level: green Handler on Duty: Xavier Mertens

SANS ISC: HTTP Header Usage Statistics - Internet Security | DShield 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
Last-Modified
Accept-Ranges
Pragma
X-Powered-By
Link
ETag
CF-RAY
Expect-CT
Via
X-Cache
X-XSS-Protection
Age
Content-Security-Policy
Access-Control-Allow-Origin
Content-Language
X-UA-Compatible
X-Xss-Protection
X-Cache-Hits
X-Amz-Cf-Id
X-Served-By
P3P
Referrer-Policy
X-Varnish
X-Request-Id
X-Timer
CF-Cache-Status
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-AspNet-Version
X-Download-Options
X-Runtime
Access-Control-Allow-Credentials
P3p
CF-Ray
X-Drupal-Cache
X-Amz-Cf-Pop
X-Check
X-Adblock-Key
Alt-Svc
X-Cacheable
X-Generator
Content-Security-Policy-Report-Only
X-Cache-Status
X-DNS-Prefetch-Control
X-AspNetMvc-Version
Status
X-Template
X-Language
Timing-Allow-Origin
X-Permitted-Cross-Domain-Policies
Content-Encoding
X-Iinfo
X-Buckets
X-Content-Security-Policy
X-Turbo-Charged-By
X-Kinja-Server-Push
X-CDN
Upgrade
X-Request-ID
X-Type
Xkey
Keep-Alive
Access-Control-Expose-Headers
Access-Control-Max-Age
WPE-Backend
X-Pass-Why
X-AH-Environment
X-Backend
X-Cache-Group
X-Server
X-Age
X-Drupal-Dynamic-Cache
X-Pingback
X-Via
X-Nginx-Cache-Status
Grace
X-Amz-Request-Id
X-Amz-Id-2
X-Server-Powered-By
EagleId
X-Hacker
X-UA-Device
X-Robots-Tag
X-LiteSpeed-Cache
X-Varnish-Cache
X-Page-Speed
X-Proxy-Cache
X-Swift-CacheTime
X-Swift-SaveTime
Request-Context
Cf-Railgun
X-Envoy-Upstream-Service-Time
Ali-Swift-Global-Savetime
X-Ua-Compatible
X-Ac
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Device
X-WebKit-CSP
X-Cache-Lookup
Content-Location
X-Amz-Version-Id
Surrogate-Control
X-Server-Id
X-Cnection
X-Node
X-OneAgent-JS-Injection
X-Host
X-Readtime
EagleEye-TraceId
Report-To
X-Rq
X-Response-Time
Server-Timing
Feature-Policy
X-Application-Context
X-CST
X-Rack-Cache
X-Backend-Server
X-ORACLE-DMS-ECID
X-Iejgwucgyu
X-Cloud-Trace-Context
Request-Id
X-Instart-Request-ID
X-Clacks-Overhead
X-Url
NEL
Edge-Control
X-DynaTrace
Rating
Allow
X-Country
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Varnish-TTL
X-Origin-Cache
X-FTR-Request-ID
X-Country-Code
X-B3-TraceId
X-Trace
X-Px
X-Server-ID
X-DataDome
X-Vhost
X-ESI
X-Server-Name
X-GitHub-Request-Id
X-ORACLE-DMS-RID
X-VARITI-CCR
X-Ruxit-JS-Agent
RTSS
X-Goog-Hash
X-Cached
X-MS-InvokeApp
Accept-CH
Charset
Pinterest-Generated-By
X-Mod-Pagespeed
X-TTL
SPRequestGuid
X-PC
X-F-Cache
X-Vname
Public-Key-Pins
X-TtlSet
X-Kinja-Server
X-Use-Magma
X-Cdn-Fetch
X-Kinja
X-Kinja-Revision
X-GoogleNews-Bot
X-Exp-Id
X-Kinja-Build
Verso
X-Exp-Variant
PB-PID
PB-RID
X-Mobile-Rewrite
Arc-Version
X-Version
X-Dispatcher
X-D2id
X-Cdn
X-SharePointHealthScore
X-T
X-Powered-By-Plesk
X-DIS-Request-ID
X-Abt-Application-Version
X-Powered-CMS
Accept-CH-Lifetime
X-Fastly-Request-ID
X-Ser
X-DynaTrace-JS-Agent
X-Origin-Upstream-Status
X-Upstream-Env
Pinterest-Version
X-Pinterest-Rid
X-Shield-Request-Id
X-B
X-SRCache-Fetch-Status
X-Forwarded-Proto
X-SRCache-Store-Status
X-Amz-Rid
X-Navigation-Version
MS-Author-Via
Realpath
X-Recruiting
X-Client-IP
DynaTrace
X-HW
SPIisLatency
SPRequestDuration
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-Upstream
X-Vcap-Request-Id
X-Goog-Stored-Content-Encoding
X-Goog-Generation
X-Goog-Metageneration
X-Goog-Stored-Content-Length
Nginx-Cache
Content-MD5
X-Accel-Buffering
X-Wix-Server-Artifact-Id
X-Amz-Meta-S3cmd-Attrs
AR-PoweredBy
AR-CACHE
AR-ATIME
X-Ttl
Arr-Disable-Session-Affinity
Edge-Cache-Tag
X-Hits
X-Debug
X-Varnish-Age
X-N
X-Goog-Storage-Class
X-Oracle-Dms-Rid
X-B3-TraceId-Primal
X-Aspnet-Version
Mrf-Cache-Status
X-Mrf-Section-Lastmod
X-Mrf-Item-Lastmod
MRF-Tech
X-NF-Request-ID
X-Via-JSL
X-MSEdge-Ref
X-Dw-Request-Base-Id
X-Acc-Meta-Resource-Type
Access-Control-Request-Method
TCN
X-XRDS-Location
S
X-ATG-Version
X-FTR-Realm
X-FTR-DC
X-FTR-Balancer
X-Country-Code-Real
X-FTR-Backend-Server
X-FTR-Cache-Status
X-FTR-Backend
X-Id
Service-Worker-Allowed
X-FTR-Expires
X-NewRelic-App-Data
X-Logged-In
X-Oneagent-Js-Injection
Alternate-Protocol
X-Forwarded-For
X-Frontend
X-Kinsta-Cache
Surrogate-Key
X-HS-Hub-Id
X-HS-Content-Id
X-PressLabs-Stats
Rt-Fastcgi-Cache
AMP-Access-Control-Allow-Source-Origin
Tracecode
X-FastCGI-Cache
X-Content-Digest
X-Cache-Key
X-Pad
X-FTR-Cache-Host
X-Grace
Fastly-Restarts
MicrosoftSharePointTeamServices
X-RateLimit-Remaining
X-CF-Powered-By
Server-Name
Fastcgi-Cache
X-Edge-Location
X-Amzn-Trace-Id
Backend-Timing
X-Content-Options
X-Analytics
X-Ruxit-Js-Agent
Host
FilterID
TP-Cache
TP-L2-Cache
X-Cache-2
X-User-Agent
Ar-Sid
X-Rid
X-Magnolia-Registration
X-Whom
X-Debug-Info
X-B3-Sampled
X-Revision
X-IPLB-Instance
Eomportal-Instance
X-Page-Id
ServerID
X-Hostname
X-Mobile
X-NWS-LOG-UUID
AR-Request-ID
X-Request-Received
X-Request-Processing-Time
X-Srv
X-Akam-SW-Version
Paypal-Debug-Id
Front-End-Https
X-VCache
X-AOL-HN
Refresh
X-GUploader-UploadID
X-Litespeed-Cache
X-Content-Powered-By
Retry-After
X-Signature
X-B-Cache
X-LB-Cache
X-Request-Guid
Source
X-Framework
X-Handled-By
X-Cluster
X-Device-Type
Cleartype
X-App-Environment
X-Cache-Action
X-SS-Set-Cookie
X-WA-Info
X-Varnish-Hostname
X-Instance
X-FB-Debug
X-Cache-Control
X-BCube-Filmed-By
X-Cache-Hit
X-Varnish-Grace
X-Tumblr-Pixel
X-Tumblr-User
X-Tumblr-Pixel-0
X-Akamai-Edgescape
X-Correlation-Id
X-Platform-Server
X-Content-Security-Policy-Report-Only
X-HS-Cache-Config
X-Fastcgi-Cache
Webserver
X-Zen-Fury
X-XRDS-LOCATION
X-Activity-Id
X-Az
X-AppVersion
Display
X-Varnish-Backend
X-Middleton-Display
X-Sol
VIX-Pulpo-Node
X-Content-Type
VIX-Pulpo-Upstream-Status
Healthy
X-Cache-Rule
X-TA-CDN-Provider
X-Cache-Server
X-Middleton-Response
X-Seen-By
ViewerVersion
X-Wix-Request-Id
Response
X-Drupal-Cache-Tags
X-Daa-Tunnel
X-Varnish-Server
X-URL
X-TT
X-Cache-Age
Upgrade-Insecure-Requests
X-Drupal-Cache-Contexts
X-Generated-By
X-App-Server
X-Geo-Country
X-Origin-Server
X-Cached-By
Cache-Status
Accept-Charset
Server-Node
S-Cnection
X-CACHE-GROUP
X-DataStream-Cache-Status
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Amz-Replication-Status
X-Esi
X-Accel-Expires
Payment
X-UA-Device-Type
X-S
X-Response-Served-From
X-Cacheable-TTL
X-Locale
X-Contextid
X-Servedby
Access-Control-Allow-Method
X-Adobe-Content
X-Adobe-Loc
GEO-INFO
X-Edge-Cache-Key
Filters
X-Edge-Cache
NGB
X-Cache-NE
ServedBy
Viewport
X-Jobs
X-RequestSource
X-UUID
X-Varnish-IP
X-Status
X-TT-TIMESTAMP
Actual-Object-TTL
X-TX-ID
X-FW-Type
X-FW-Static
AsisCache
X-FW-Server
X-FW-Hash
X-Tumblr-Pixel-1
X-Amz-Server-Side-Encryption
X-Varnish-Hits
X-Tumblr-Pixel-2
Server-Info
X-FW-Serve
X-Storage
X-WebKit-CSP-Report-Only
X-GeoIP
X-PHP-Backend
X-Dns-Prefetch-Control
Cache-Tv-Group
X-WPE-Loopback-Upstream-Addr
X-Node-Name
MS-CV
X-Cache-Remote
HostName
X-Rendered-As
X-Cache-TTL-Remaining
X-Croise-Owner
X-App-Version
Cache
Host-Header
From-Origin
X-Region
SRV
X-Cache-Operation
X-Vg-Webcache
X-Webkit-CSP
X-Redis-Cache
X-Hyper-Cache
X-APP-VERSION
Served-By
X-Dynatrace-Js-Agent
Cache-Tag
Liferay-Portal
Public-Key-Pins-Report-Only
DC
X-HS-Combine-CSS
X-Mode
X-Cache-Var-Map
X-Cache-Var
X-Agile-Id
X-Agile
Selected-FE
X-Path-Route
X-Agile-Age
X-TNCMS
Meta-Geo
X-Timing-Wait
X-Site-Version
Machine
X-Detected-As
X-Hosted-By
X-Webstats-RespID
X-Human
X-IP
X-Is-Bot
X-RN-RSRV
X-Generated
X-Loop
X-Proxy-Build
X-L-Path
X-Original-Request
X-NGENIX-Cache
X-JoinUs
X-Web-Node
Xserver
X-Forwarded-Host
Origin-Cache-Control
X-ProxyCache-Key
X-Akamai-Transformed
X-Labrador-Cache-Channel
X-Upgrade-Enabled
X-Request-Time
X-Environment-Context
X-Cache-Category-Id
X-Endurance-Cache-Level
Origin-Edge-Control
X-Pc-Hit
X-Pc-Key
X-BYPASS-REASON
X-ProxyCache-Status
X-Via-Fastly
Powered-By-ChinaCache
Now
X-Pc-Appver
X-Grey
Pagespeed
Cache-Name
X-Pubstack
X-Proxy
X-ServerID
X-Birta-Served
X-FC-Vary-Parameters
X-Origin-Response-Time
X-Internal-Host
X-CDN-Cache
X-Upstream-CT
X-UA
X-Akamai-Request-ID
X-Origin
X-Birta-Cache-Post
X-Viewer-Country
S-Rt
X-Upstream-HT
X-VG-TLSProxy
X-NCache
X-Vgn-Hpd-Reason
X-Origin-Host
X-CACHE-KEY
X-PCL
X-OCL
X-ProcessESI
Fastcgi-X-Cache-Version
X-Cache-Config
X-Backend-Name
X-Origin-CC
X-CCM
Fastcgi-X-Cache
DB-Nickname
Fastcgi-Useragent
Cache-Tags
X-Tumblr-Pixel-3
Azure-SlotName
X-RemovedCookies
Azure-InstanceId
X-Time-Microsecs
Mn-Server-Ip
X-Guploader-Uploadid
Azure-RegionName
Azure-SiteName
X-Format
X-Via-CDN
X-Tb
Azure-Version
X-Www-Served-By
X-Xfnlog-Site
X-BACKEND-TTL
X-Rule
TWC-Locale-Group
Property-Id
X-App-Name
Webcakes-App-Version
TWC-Device-Class
X-Routing-Service
X-Parent-Response-Time
X-Proxied
Webcakes-App-Name
X-Yottaa-Metrics
X-Origin-Hint
X-Zipkin-Id
TWC-Privacy
X-Yottaa-Optimizations
Webcakes-Region
TWC-Connection-Speed
TWC-GeoIP-LatLong
TWC-GeoIP-Country
HitType
X-B3-Spanid
X-Access
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Section
Cache-Key
X-Protected-By
Datacenter
X-Newrelic-App-Data
X-Ocache
User-Cache-Control
Content-Style-Type
Content-Script-Type
X-TIME
Vix-Hermes-Req-Id
X-Edge-IP
X-Nginx-Cache
X-Cache-TTL
OT-Force-Account-Verify
X-Alternate-Cache-Key
X-ShopId
X-ShardId
X-Sorting-Hat-PodId
X-Shopify-Stage
X-Sorting-Hat-ShopId
X-RTag
Ms-Operation-Id
X-Ezoic-Cdn
X-Akamai-Request-ID2
Time
X-PERF
X-ApacheServer
X-Cdn-Forward
X-Real-IP
X-Cache-Backend
X-FB-TRIP-ID
X-Pc-Host
X-RateLimit-Limit
X-Pc-Date
X-OVcl
X-OVcl-Cache
L5d-Success-Class
NtCoent-Length
Accept-Language
X-Webkit-Csp
X-Mrs-Cache
AR-SID
X-Mshield-Cache-Status
X-Mrs-Age
X-Front
X-Content-Age
X-Mrs-Cache-Hits
X-Unique-Id-Primal
X-Correlation-ID
X-Real-Ip
LB
Country
Load-Balancing
X-Proto
X-Amz-Meta-Surrogate-Control
X-Varnish-Cacheable
X-Ratelimit-Limit
X-Debug-Cache
X-Varnish-Beresp-Grace
Section-Io-Cache
X-Varnish-Beresp-Status
X-Varnish-Beresp-Ttl
Ohc-File-Size
X-Nc
X-CDN-Forward
Fusion-Source
Fusion-Template-Id
Fusion-Content-Source
Fusion-Content-Id
Fusion-Component-Id
X-Unique-ID
X-Sucuri-ID
X-Hit
WZWS-RAY
X-Hl-Ver
Mail-Subject
X-GRACE
We-Hiring
X-Trace-Id
Warning
Version
X-EdgeConnect-Cache-Status
User-Agent
X-MP-GENERATED-AT
X-CLOUD-TRACE-CONTEXT
X-Geo
X-Time
X-Cache-Host
X-Cache-Expires
X-Cache-Bucket
X-Cache-Debug
X-Cache-Enabled
X-Developer
X-Cache-FS-Status
X-Date
X-CF-Lambda-Fn
X-CF-Lambda-Version
X-Microcachable
X-Cache-URL
X-Cache-Id
X-D
X-CUA
X-Crawler
X-Destination
X-A-Dgt
Request-Time
Rendered-Blocks
Release
Resin-Trace
RNT-Machine
SD-X-WS
Rt-Proxy-Cache
RNT-Time
Powered-By
Platform
Memcached
MD5-Digest
Is-Eu
Meta-Geo-Continent
Mobile-Detection-Method
PFcat
Node
Server-ID
SS
X-Actual-URL
X-Accel-Expires-Debug
X-A-Wwc
X-Aed
X-Application
X-BB-ID
X-B-Cookie
X-Auto-Login
X-Device-Os
X-A-Dcw
VivaBuild
Viewtype
V-Age
Www
X-A
X-A-Dam
X-A-Ccd
X-Bip
X-P-T
X-Server-By
X-Served-From
X-Server-Time
X-SRCache-Key
X-Swa-Ws
X-Store
X-ScT
X-S-Maxage
X-Returned-From-DLL
X-Returned-From-BeforeDispatch
X-Returned-From-PostProcessResponse
X-Rewrite-Enabled
X-S-Cookie
X-Rojux
X-Thanos
X-Transaction
X-Via-Edge
X-VG-WebServer
X-Via-SSL
X-We-Are-Hiring
Xc-Version
X-WebServer
X-Varnish-Action
X-Variation
X-TT-LOGID
X-Trv-Group
X-Twitter-Response-Tags
X-UE-Client-Country
X-Var-Ttl
X-User
X-Returned-From
X-Response-By
X-Li-Pop
X-Li-Fabric
X-LI-Proto
X-LI-UUID
X-Node-Id
X-Logtrace-Id
X-Layer
X-Goog-Meta-Goog-Reserved-File-Mtime
X-DPWN-IS-SECURE
X-Dispatcher-Server
X-External-Request-Id
X-From
X-Generated-In
X-G
X-NU-AKA-ACS-Version
X-Org
X-Rebelmouse-Cache-Control
X-RCS-CacheZone
X-Rebelmouse-Surrogate-Control
X-Region-Sid
X-Request-UUID
X-Release
X-Qloud-Router
X-PHP-Host
X-Passed-To
IBM-Web2-Location
X-Passed-To-BeforeDispatch
X-Passed-To-DLL
X-PAYTM-SRV-ID
X-Passed-To-PostProcessResponse
X-Died
X-Connection-Hash
Fly-Request-Id
Fly-Cache
Frame-Options
Adler-Geo
Ec-Rule-Version
Access-Control-Request-Headers
X-Ua
Ajk
Fastly-SIE
Fastly-Backend-Name
Fastly-SWR
Cache-Prefix
BehaviorPad-Version
Arc-Country
X-Rocket-Nginx-Bypass
X-C
Pagetype
X-Cache-CFC
X-Phone
X-Block-Status
X-Matched-Rule
X-Key
X-IN-SSL-APIGATEWAY
X-IN-WAF
X-Info
X-Backend-State
Cache-Cookie-Set-From
X-Nginx-Cache-Key
Country-Code
Countrycode
X-Origin-Date
X-Origin-Expires
Cache-Cookie-Set-Idcheck
Cache-Cookie-Set-Lfrom
X-Amz-Meta-Cache-Control
X-IN-APIGATEWAY
X-Hnp-Log
X-Fstrz
X-Fetched-On
X-Server-IP
X-F5-Cache
X-FW-Version
X-Proxy-Upstream
X-GeoIP-Country-Code
X-Request-Start
X-Gen-Mode
X-Sf
X-Distributor
X-Via-NSCOPI
X-Clientip
X-Proxy-Cache-Status
X-Thinkindot-L3
X-SVT-ORM-VERSION
X-Hash
X-Stale
X-SVT-ORM-RULES
X-Reboot
Backend
Proxy-Connection
Fastly-SSL
Kp-EeAlive
Thinkindot-CacheControl
Magicmarker
True-Client-Country-4JS
Thinkindot-CacheControl-Type
Server-Int
Server-Host
GMS-Ver
Pramga
Web-Mar-Node
Esi-Enabled
Origin
Thinkindot-Control
On-Server
X-Dc
X-NODE
X-Secret
HA-Urlpath
X-Page-Type
X-Svr
X-MI-In-Market
HA-Geolat
HA-Geocountry
X-Server-Group
X-ServiceProvider
X-No-Session
X-Epic-Correlation-Id
X-Eu-Site
X-Fastly-Cache
HA-Geocity
X-Gannett-Site-Version
X-Request-URI
X-Irp-Debug
Heartbleed
MI-API
X-Policy
HA-Ipaddr
Ha-Gx-Prefs
MI-Cache
X-Location
HA-Geolon
HA-Servedtime
HA-Georegion
IsBot
MI-Cache-Age
HA-Host
X-SIPLIST1
X-Up
X-Distil-CS
X-UnsetCookies
X-ElasticPress-Search
X-MSEdge-Features
X-CGP
X-V
Who
Decoy-Debug-Status
Decoy-Debug-TTL
Decoy-Debug-Key
Content-Disposition
Backend-Name
X-Core-Mission
AKAMAI
GW-Server
X-Core-Value
HA-Cloudapp
X-MSEdge-Flight
X-DC
X-Be
X-Debug-Cookies
Apple-News-Services-Host
X-Platform
Apple-News-Services-Parsed-Url
X-Debug-Log
X-Origin-TTL
X-NX-Host
X-Micro-Cache
X-Wikidot-Static-Cache
Apple-News-Services-Handled
CDCHOST
Apple-News-Services-Request-Url
X-Debug-Cache-Expiry
X-Debug-Cache-Store
REQUESTUUID
X-Refresh
X-Debug-Cache-Fetch
X-Backend-Url
Pragrma
X-Wikidot-Backend
X-Backend-Host
Fastly-Soc-X-Request-Id
X-Servername
ServerName
X-COUNTRY
X-Level-Front-Cache
X-Sn-Servicetimems
Lfy
X-Instart-Info
X-Generated-On
X-Planisys-CDN-Rules
X-Planisys-CDN-Cache
X-Urbn-Site-Id
X-Developers
X-Urbn-Context-Path
X-Planisys-CDN-TTL
Uber-Trace-Id
UCS
X-Cdn-Origin
Request-EU
Locale
X-Instance-Name
Request-Country
X-Cache-Info
X-NWS-UUID-VERIFY
X-Pjax-Url
Host-ID
Ohc-Response-Time
X-VarnPar1
X-VarnCache
X-Server-Cache
RequestId
X-PARISIEN-Cache-Rendered
PageSpeed
V-Cache
Group
MIME-Version
X-GeoIP-City
X-CACHE-AGE
X-VCT
X-Cdn-Srv
X-Req
X-ARC
X-NC
X-Newrelic-Synthetics
HitInfo
X-Datadome
Cteonnt-Length
Cache-Provider
Memory
X-BBXSRF
Cdn
Mime-Version
X-Powered-By-ANYU
PICS-Label
X-CMS-Context
X-Ratelimit-Remaining
X-Gdpr
X-Servedbyhost
X-EIG-Tracking-Id
Nel
X-LAGOON
X-TWH-CORRELATION-ID
CF-IPCountry
X-WR-MODIFICATION
NGX
X-Aicache-OS
X-StackifyID
X-Wa
GeoIP-Latitude
GeoIP-Country-Code
X-HTML-Minification-Powered-By
X-Load-Cache
X-B3-Traceid
CDN
X-Fastly-Country-Code
X-CSRF-TOKEN
X-Cluster-Node
XServer
X-FireWall-Port
X-Fastly-Backend-Reqs
X-Varnish-Cache-Hits
Cf-Ipcountry
X-RateLimit-Remaining-Second
FSS-Proxy
X-UPSTREAM-Address
X-Sentry-ID
FSS-Cache
X-NodeID
X-WA
X-RateLimit-Limit-Second
X-Generation-Time
Amp-Access-Control-Allow-Source-Origin
Processtime
X-VServer
X-ABtesting
X-Check-Cacheable
X-Hello
GeoIp-Country-Code
X-Flog
Geoip-Latitude
X-ID
X-Csrf-Token
SN
X-Source
X-SRV
X-Sedo-Request-Id
X-Cache-Grace
X-Cache-Miss-From
X-Unique-Id
X-HOST
CACHE
X-Varnish-Beresp-TTL
X-Oss-Request-Id
X-CDN-Pop-IP
X-Oss-Storage-Class
WP-Super-Cache
X-Oss-Object-Type
X-GZip
X-ServedByHost
X-Varnish-Authentication
X-Oss-Hash-Crc64ecma
X-CDN-Pop
X-Oss-Server-Time
X-APP
Server-Cache-Control
Server-Surrogate-Control
X-Cache-ASPX
X-IPS-LoggedIn
X-Dynatrace
X-RCS-Backend
X-Nananana
X-DataStream-MidMile-RTT
X-CSRF-Token
TSSecure
URI
X-DataStream-Origin-MEX-Latency
X-Skip-Cache
Pics-Label
X-VC-Cache
X-Varnish-Url
Cdn-Request-Time
X-GDPR
Cdn-Host
X-FORWARDED-FOR
X-Worker
X-Edge-Server
X-MServer
DataCenter
X-HS-Status
A
X-ND-Cache
X-B3-SpanId
X-VG-WebCache
X-Instart-Isnd
X-Sucuri-Cache
X-Fastly-Cache-Hits
X-From-Cache
X-GoCache-CacheStatus
Get-Access-Time
Is-Session-Tracking
PageType
X-BE
X-Swift-Error
X-Backend-TTL
Dynatrace
Hostname
X-Port
Proxy-Firewall
X-PJAX-URL
HTTPS
Serverid
X-LJ-Flow-ID
X-VWS-Id
X-SplitTest
X-AWS-Id
X-Gen-Id
Powered
X-Amzn-Remapped-Connection
X-Bug-Bounty
X-Server-W
X-GZIP
X-Pf-Uncompressing
X-Amzn-Remapped-Date
Odigeo-Trace-Id
X-Owner
X-ORIG-AKA-EDGE
X-Cache-Ttl
X-NGINX-Cache
X-VarnPar2
Requestid
X-Fe
X-SN
X-Amz-Meta-S3b-Last-Modified
Cache-Hits
X-Pc-Subdomain
X-LiteSpeed-Cache-Control
X-HostName
X-RAMCache
X-Serial
X-GEO
X-Alicdn-Da-Ups-Status
X-PAGE-TYPE
X-Varnish-URL
X-ServerName
T-Server
RequestUuid
X-ORIG-AKA-COUNTRY-CODE
X-PF-Uncompressing
X-RequestId
WebServer
X-VC
X-SB
X-Dw-Trace-Id
X-LiteSpeed-Tag
Xet-Cookie
X-Akamai-SSL-Client-Sid
Correlation-Id
SID
X-Akamai-ERRuleID
X-Ms-Blob-Type
X-Developed-By
Location
X-HTML-Edge-Cache
X-Ms-Lease-Status
X-CS
X-Akamai-ERPolicy
X-Ms-Version
X-Ms-Request-Id
NnCoection