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-Cache-Hits
X-Xss-Protection
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
Content-Encoding
X-Iinfo
X-Permitted-Cross-Domain-Policies
X-Buckets
X-Content-Security-Policy
X-Turbo-Charged-By
X-Kinja-Server-Push
Upgrade
X-CDN
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-SaveTime
X-Swift-CacheTime
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-WebKit-CSP
X-Device
X-Cache-Lookup
X-Amz-Version-Id
Content-Location
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-Px
X-Trace
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
Accept-CH
RTSS
X-MS-InvokeApp
X-Goog-Hash
X-Cached
Charset
SPRequestGuid
X-Mod-Pagespeed
X-TTL
Pinterest-Generated-By
X-TtlSet
X-PC
X-Vname
X-D2id
X-F-Cache
Verso
Public-Key-Pins
X-Exp-Id
X-Kinja-Server
X-Use-Magma
X-Kinja-Revision
X-Kinja-Build
X-GoogleNews-Bot
X-Kinja
X-Cdn-Fetch
X-Exp-Variant
PB-PID
Arc-Version
X-Mobile-Rewrite
PB-RID
X-Dispatcher
X-Version
X-Cdn
X-T
X-SharePointHealthScore
X-Powered-By-Plesk
Accept-CH-Lifetime
X-DIS-Request-ID
X-Abt-Application-Version
X-Powered-CMS
X-Fastly-Request-ID
X-Ser
X-DynaTrace-JS-Agent
X-Origin-Upstream-Status
X-Pinterest-Rid
Pinterest-Version
X-Upstream-Env
X-Navigation-Version
X-B
X-Shield-Request-Id
X-Forwarded-Proto
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-Amz-Rid
MS-Author-Via
X-Recruiting
Realpath
X-Client-IP
DynaTrace
X-HW
SPIisLatency
SPRequestDuration
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-TEC-API-ROOT
X-Upstream
X-Vcap-Request-Id
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Goog-Metageneration
Nginx-Cache
Content-MD5
X-Wix-Server-Artifact-Id
X-Accel-Buffering
X-Amz-Meta-S3cmd-Attrs
AR-CACHE
AR-PoweredBy
AR-ATIME
X-Ttl
Arr-Disable-Session-Affinity
Edge-Cache-Tag
X-Debug
X-Hits
X-Varnish-Age
X-N
X-B3-TraceId-Primal
X-Mrf-Section-Lastmod
Mrf-Cache-Status
MRF-Tech
X-Mrf-Item-Lastmod
X-Goog-Storage-Class
X-Oracle-Dms-Rid
X-Aspnet-Version
X-MSEdge-Ref
X-NF-Request-ID
X-Via-JSL
X-Acc-Meta-Resource-Type
X-Dw-Request-Base-Id
Access-Control-Request-Method
X-Id
TCN
X-NewRelic-App-Data
S
X-XRDS-Location
X-ATG-Version
X-FTR-DC
X-FTR-Realm
X-Country-Code-Real
X-FTR-Backend
X-FTR-Backend-Server
X-FTR-Cache-Status
X-FTR-Balancer
X-FTR-Expires
Service-Worker-Allowed
X-Logged-In
X-Oneagent-Js-Injection
Alternate-Protocol
X-HS-Hub-Id
X-HS-Content-Id
X-Kinsta-Cache
X-Frontend
Rt-Fastcgi-Cache
X-PressLabs-Stats
Tracecode
Surrogate-Key
X-Content-Digest
AMP-Access-Control-Allow-Source-Origin
X-Forwarded-For
X-FastCGI-Cache
X-Cache-Key
X-Pad
X-Grace
X-FTR-Cache-Host
MicrosoftSharePointTeamServices
Fastly-Restarts
X-RateLimit-Remaining
Server-Name
X-CF-Powered-By
Fastcgi-Cache
X-Amzn-Trace-Id
X-Edge-Location
Backend-Timing
X-Analytics
X-Content-Options
X-Ruxit-Js-Agent
Ar-Sid
TP-Cache
TP-L2-Cache
Host
FilterID
X-Cache-2
X-Rid
X-User-Agent
X-Magnolia-Registration
X-Whom
ServerID
X-Debug-Info
X-B3-Sampled
X-IPLB-Instance
X-Revision
Eomportal-Instance
X-Mobile
X-Page-Id
X-Hostname
X-Request-Processing-Time
X-Request-Received
X-Srv
AR-Request-ID
X-NWS-LOG-UUID
X-Akam-SW-Version
Paypal-Debug-Id
X-AOL-HN
Front-End-Https
X-VCache
X-Content-Powered-By
Retry-After
Refresh
X-Litespeed-Cache
X-B-Cache
X-Signature
X-Cache-Action
X-Device-Type
X-Framework
X-Handled-By
X-Cluster
X-LB-Cache
X-SS-Set-Cookie
X-Varnish-Hostname
X-App-Environment
Cleartype
Source
X-FB-Debug
X-Cache-Control
X-BCube-Filmed-By
X-Tumblr-User
X-Tumblr-Pixel-0
X-WA-Info
X-Tumblr-Pixel
X-Akamai-Edgescape
X-Instance
X-Correlation-Id
X-Request-Guid
X-Content-Security-Policy-Report-Only
X-Cache-Hit
X-Platform-Server
X-Varnish-Grace
X-Fastcgi-Cache
X-HS-Cache-Config
X-GUploader-UploadID
Webserver
X-Activity-Id
X-AppVersion
X-Az
X-Zen-Fury
X-XRDS-LOCATION
X-Middleton-Display
Display
X-Sol
X-Content-Type
X-Varnish-Backend
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
Healthy
X-Cache-Rule
X-Cache-Server
X-TA-CDN-Provider
X-Drupal-Cache-Tags
X-Varnish-Server
X-Wix-Request-Id
X-Cache-Age
Response
ViewerVersion
X-Middleton-Response
X-Seen-By
X-URL
X-TT
X-Daa-Tunnel
Upgrade-Insecure-Requests
X-Generated-By
X-Drupal-Cache-Contexts
X-App-Server
X-Cached-By
X-Origin-Server
X-Geo-Country
Cache-Status
Accept-Charset
X-CACHE-GROUP
X-DataStream-Cache-Status
Server-Node
S-Cnection
X-Amz-Apigw-Id
X-Amzn-RequestId
X-Amz-Replication-Status
X-Esi
X-Accel-Expires
Payment
X-UA-Device-Type
X-Response-Served-From
Filters
NGB
X-S
X-Edge-Cache-Key
X-Adobe-Loc
X-Adobe-Content
GEO-INFO
Access-Control-Allow-Method
X-Edge-Cache
X-Contextid
X-Jobs
X-Locale
X-Cacheable-TTL
Actual-Object-TTL
ServedBy
Viewport
X-Cache-NE
X-RequestSource
X-Varnish-IP
X-Servedby
X-Status
X-UUID
X-FW-Server
X-TX-ID
X-Varnish-Hits
X-FW-Hash
X-FW-Serve
X-Tumblr-Pixel-2
X-TT-TIMESTAMP
X-FW-Type
X-FW-Static
X-Tumblr-Pixel-1
Server-Info
X-Amz-Server-Side-Encryption
Cache-Tv-Group
AsisCache
X-Storage
X-WebKit-CSP-Report-Only
X-PHP-Backend
X-GeoIP
MS-CV
X-WPE-Loopback-Upstream-Addr
X-Dns-Prefetch-Control
HostName
X-Node-Name
X-Cache-Remote
X-Cache-TTL-Remaining
Cache
X-Croise-Owner
X-App-Version
From-Origin
Host-Header
X-Region
X-Rendered-As
SRV
X-Vg-Webcache
X-Cache-Operation
X-Webkit-CSP
X-Hyper-Cache
X-Redis-Cache
X-APP-VERSION
Served-By
X-Guploader-Uploadid
Liferay-Portal
X-Dynatrace-Js-Agent
Cache-Tag
Public-Key-Pins-Report-Only
DC
X-CACHE-KEY
X-Mode
X-HS-Combine-CSS
X-BACKEND-TTL
X-Site-Version
X-Timing-Wait
X-Generated
X-RN-RSRV
X-Hosted-By
Meta-Geo
X-Path-Route
X-Human
Selected-FE
X-Akamai-Transformed
X-Upgrade-Enabled
X-Detected-As
X-Proxy-Build
Machine
X-Forwarded-Host
X-Webstats-RespID
X-Is-Bot
X-NGENIX-Cache
X-Cache-Var-Map
X-Cache-Var
Pagespeed
X-Endurance-Cache-Level
X-Vgn-Hpd-Reason
X-Original-Request
X-Cache-Category-Id
Xserver
X-BYPASS-REASON
X-Internal-Host
X-TNCMS
X-Agile-Age
Origin-Cache-Control
Now
X-NCache
X-Loop
X-Upstream-HT
X-Upstream-CT
Origin-Edge-Control
Powered-By-ChinaCache
X-Grey
X-Web-Node
X-ProxyCache-Status
X-ProxyCache-Key
X-JoinUs
Cache-Name
X-IP
X-Agile-Id
X-Environment-Context
X-L-Path
X-Request-Time
X-Agile
X-Labrador-Cache-Channel
X-Via-Fastly
X-Akamai-Request-ID
X-ServerID
DB-Nickname
X-Proxy
X-Pc-Hit
X-Pubstack
X-Pc-Key
X-RemovedCookies
X-Birta-Served
X-CDN-Cache
X-Origin
X-Pc-Appver
X-Origin-Host
X-ProcessESI
X-FC-Vary-Parameters
X-B3-Spanid
X-UA
X-Tumblr-Pixel-3
X-Viewer-Country
X-Time-Microsecs
X-Origin-Response-Time
X-Birta-Cache-Post
X-VG-TLSProxy
X-Backend-Name
X-CCM
Fastcgi-Useragent
X-PCL
S-Rt
X-Ocache
Fastcgi-X-Cache-Version
X-OCL
Cache-Tags
X-Cache-Config
Fastcgi-X-Cache
X-Origin-CC
Azure-InstanceId
Azure-SiteName
Azure-RegionName
X-Xfnlog-Site
Azure-SlotName
Azure-Version
X-Format
Mn-Server-Ip
X-Tb
X-Www-Served-By
X-Rule
Content-Style-Type
TWC-Privacy
Webcakes-App-Name
HitType
X-Kong-Proxy-Latency
X-Proxied
X-Zipkin-Id
Property-Id
TWC-GeoIP-LatLong
TWC-Locale-Group
X-Parent-Response-Time
TWC-GeoIP-Country
TWC-Connection-Speed
TWC-Device-Class
Webcakes-App-Version
X-App-Name
X-Section
Webcakes-Region
X-Access
X-Origin-Hint
X-Routing-Service
X-Yottaa-Optimizations
X-Via-CDN
X-Yottaa-Metrics
X-Kong-Upstream-Latency
Content-Script-Type
Datacenter
X-Protected-By
Cache-Key
X-TIME
X-Edge-IP
User-Cache-Control
Vix-Hermes-Req-Id
X-Cache-TTL
X-Nginx-Cache
OT-Force-Account-Verify
Ms-Operation-Id
X-ShopId
X-Alternate-Cache-Key
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-Shopify-Stage
X-RTag
X-ShardId
X-Akamai-Request-ID2
X-Ezoic-Cdn
X-FB-TRIP-ID
X-PERF
X-OVcl
X-OVcl-Cache
X-ApacheServer
Time
X-Cdn-Forward
X-RateLimit-Limit
X-Real-Ip
NtCoent-Length
X-Cache-Backend
X-Newrelic-App-Data
X-Pc-Host
X-Pc-Date
X-Unique-Id-Primal
X-Mrs-Cache-Hits
Accept-Language
X-Mrs-Cache
X-Mshield-Cache-Status
X-Mrs-Age
L5d-Success-Class
X-Front
AR-SID
X-Content-Age
X-Webkit-Csp
X-Real-IP
Country
X-Correlation-ID
Load-Balancing
LB
X-Varnish-Cacheable
X-Debug-Cache
X-Amz-Meta-Surrogate-Control
X-Ratelimit-Limit
X-Proto
X-Nc
Section-Io-Cache
X-Varnish-Beresp-Status
X-Varnish-Beresp-Grace
X-Varnish-Beresp-Ttl
Ohc-File-Size
X-CDN-Forward
Fusion-Template-Id
Fusion-Source
Fusion-Component-Id
Fusion-Content-Id
Fusion-Content-Source
X-Hit
X-Unique-ID
X-Sucuri-ID
X-MP-GENERATED-AT
X-Hl-Ver
X-Trace-Id
WZWS-RAY
Mail-Subject
We-Hiring
X-GRACE
Warning
Version
X-Time
X-CLOUD-TRACE-CONTEXT
X-EdgeConnect-Cache-Status
X-Microcachable
User-Agent
X-Geo
X-C
X-Cache-Debug
X-Date
X-Cache-Bucket
X-CF-Lambda-Version
X-Bip
X-Cache-Enabled
X-Connection-Hash
X-Cache-Expires
X-Cache-Host
X-Cache-FS-Status
X-Cache-Id
X-Cache-URL
X-D
X-CF-Lambda-Fn
X-Crawler
X-A-Dam
RNT-Machine
Resin-Trace
Request-Time
RNT-Time
Rt-Proxy-Cache
SS
Server-ID
Server-Host
Rendered-Blocks
Release
Mobile-Detection-Method
Meta-Geo-Continent
Is-Eu
Node
PFcat
Powered-By
Platform
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
X-Actual-URL
X-Accel-Expires-Debug
X-A-Wwc
X-Aed
X-Application
X-B-Cookie
X-Auto-Login
X-A-Dgt
X-A-Dcw
Viewtype
V-Age
Thinkindot-Control
VivaBuild
Www
X-A-Ccd
X-A
X-BB-ID
X-Org
X-Served-From
X-ScT
X-Server-By
X-Server-Time
X-Store
X-SRCache-Key
X-S-Maxage
X-S-Cookie
X-Returned-From-BeforeDispatch
X-Returned-From
X-Returned-From-DLL
X-Returned-From-PostProcessResponse
X-Rojux
X-Rewrite-Enabled
X-Swa-Ws
X-Thanos
X-Varnish-Action
X-Variation
X-VG-WebServer
X-We-Are-Hiring
Xc-Version
X-WebServer
X-Var-Ttl
X-User
X-Transaction
X-Thinkindot-L3
X-Trv-Group
X-TT-LOGID
X-UE-Client-Country
X-Twitter-Response-Tags
X-Request-UUID
X-Release
X-G
X-FW-Version
X-Generated-In
X-Goog-Meta-Goog-Reserved-File-Mtime
X-Logtrace-Id
X-Layer
X-From
X-Fetched-On
X-Device-Os
X-Developer
X-Died
X-Dispatcher-Server
X-External-Request-Id
X-DPWN-IS-SECURE
X-Matched-Rule
X-Node-Id
X-Qloud-Router
X-PHP-Host
X-RCS-CacheZone
X-Rebelmouse-Cache-Control
X-Region-Sid
X-Rebelmouse-Surrogate-Control
X-PAYTM-SRV-ID
X-Passed-To-PostProcessResponse
IBM-Web2-Location
X-NU-AKA-ACS-Version
X-P-T
X-Passed-To
X-Passed-To-DLL
X-Passed-To-BeforeDispatch
X-Destination
X-CUA
Fly-Cache
Fastly-SWR
Fly-Request-Id
Frame-Options
X-Dc
X-Ua
Fastly-SIE
Fastly-Backend-Name
Adler-Geo
Access-Control-Request-Headers
Ajk
Arc-Country
Cache-Prefix
BehaviorPad-Version
X-Via-NSCOPI
Ec-Rule-Version
X-Rocket-Nginx-Bypass
Pagetype
Cache-Cookie-Set-Lfrom
X-Nginx-Cache-Key
X-Amz-Meta-Cache-Control
Cache-Cookie-Set-Idcheck
X-LI-UUID
Cache-Cookie-Set-From
Kp-EeAlive
X-MI-In-Market
X-No-Session
Decoy-Debug-Status
Decoy-Debug-TTL
Web-Mar-Node
Decoy-Debug-Key
Countrycode
X-Origin-Date
X-Origin-Expires
Country-Code
Backend
X-LI-Proto
X-Hnp-Log
X-IN-APIGATEWAY
X-IN-SSL-APIGATEWAY
X-Hash
X-GeoIP-Country-Code
X-F5-Cache
X-Fstrz
X-Gen-Mode
X-Clientip
X-IN-WAF
X-Cache-CFC
AKAMAI
X-Block-Status
X-Li-Pop
X-Li-Fabric
X-Info
X-Key
X-Distributor
Content-Disposition
Esi-Enabled
X-Server-Group
X-Server-IP
X-Response-By
MI-API
GMS-Ver
GW-Server
X-ServiceProvider
Proxy-Connection
Origin
On-Server
X-UnsetCookies
MI-Cache-Age
X-Stale
X-Sf
Pramga
X-Request-Start
MI-Cache
X-Proxy-Upstream
MD5-Digest
Memcached
SD-X-WS
True-Client-Country-4JS
X-Phone
Heartbleed
X-Proxy-Cache-Status
X-Reboot
Magicmarker
X-Via-Edge
Server-Int
X-Via-SSL
X-Be
X-ElasticPress-Search
X-NODE
X-Epic-Correlation-Id
Backend-Name
Who
X-Gannett-Site-Version
X-Page-Type
X-Fastly-Cache
X-Request-URI
X-Eu-Site
X-Up
X-Location
X-Distil-CS
X-Svr
X-MSEdge-Flight
X-MSEdge-Features
X-Micro-Cache
X-Irp-Debug
X-SVT-ORM-RULES
X-Secret
X-SIPLIST1
X-V
X-SVT-ORM-VERSION
X-Policy
HA-Geolon
HA-Urlpath
HA-Cloudapp
IsBot
X-CGP
HA-Geolat
HA-Servedtime
X-Core-Mission
X-Core-Value
HA-Geocity
HA-Geocountry
X-Backend-Url
HA-Georegion
X-Backend-State
HA-Ipaddr
Fastly-SSL
REQUESTUUID
HA-Host
Ha-Gx-Prefs
X-Backend-Host
X-Refresh
X-Wikidot-Backend
X-Debug-Cache-Store
X-Wikidot-Static-Cache
X-Developers
X-Cdn-Origin
Apple-News-Services-Handled
X-Level-Front-Cache
X-NX-Host
CDCHOST
Fastly-Soc-X-Request-Id
X-Generated-On
Apple-News-Services-Request-Url
Apple-News-Services-Host
Apple-News-Services-Parsed-Url
X-Origin-TTL
X-Debug-Log
Pragrma
X-Platform
X-Debug-Cookies
X-Debug-Cache-Fetch
X-Debug-Cache-Expiry
X-Sn-Servicetimems
X-Planisys-CDN-TTL
UCS
Lfy
X-Planisys-CDN-Cache
Request-Country
Locale
X-Urbn-Context-Path
X-Urbn-Site-Id
X-Servername
X-DC
RequestId
Request-EU
Uber-Trace-Id
X-Planisys-CDN-Rules
ServerName
X-Instart-Info
X-COUNTRY
X-Instance-Name
Host-ID
X-Server-Cache
X-PARISIEN-Cache-Rendered
X-NWS-UUID-VERIFY
X-Pjax-Url
X-VarnCache
X-Cache-Info
X-VarnPar1
X-Cdn-Srv
Ohc-Response-Time
PageSpeed
Group
V-Cache
X-VCT
X-CACHE-AGE
X-Req
X-GeoIP-City
X-NC
X-ARC
X-Newrelic-Synthetics
Cteonnt-Length
MIME-Version
HitInfo
X-Datadome
Cdn
Mime-Version
Cache-Provider
X-BBXSRF
Memory
X-CMS-Context
X-Powered-By-ANYU
PICS-Label
X-Servedbyhost
X-Ratelimit-Remaining
X-Gdpr
X-EIG-Tracking-Id
Nel
X-TWH-CORRELATION-ID
X-LAGOON
X-WR-MODIFICATION
NGX
X-Wa
X-Aicache-OS
CF-IPCountry
X-StackifyID
X-HTML-Minification-Powered-By
GeoIP-Country-Code
GeoIP-Latitude
X-Load-Cache
X-B3-Traceid
CDN
X-Fastly-Country-Code
Cf-Ipcountry
XServer
X-Fastly-Backend-Reqs
X-FireWall-Port
X-UPSTREAM-Address
X-CSRF-TOKEN
X-Cluster-Node
X-Varnish-Cache-Hits
X-WA
X-Generation-Time
FSS-Cache
X-RateLimit-Remaining-Second
X-RateLimit-Limit-Second
X-NodeID
FSS-Proxy
X-Sentry-ID
X-Hello
Amp-Access-Control-Allow-Source-Origin
X-ABtesting
X-VServer
X-Check-Cacheable
X-Flog
X-Sedo-Request-Id
Processtime
Geoip-Latitude
X-Cache-Miss-From
GeoIp-Country-Code
X-FORWARDED-FOR
X-Csrf-Token
X-HOST
X-Cache-Grace
X-Unique-Id
SN
X-Source
X-Varnish-Beresp-TTL
CACHE
Server-Cache-Control
X-CDN-Pop
X-CDN-Pop-IP
X-ServedByHost
X-Oss-Request-Id
X-Oss-Server-Time
WP-Super-Cache
X-Oss-Object-Type
X-Oss-Hash-Crc64ecma
X-GZip
X-APP
X-Varnish-Authentication
X-Oss-Storage-Class
X-Cache-ASPX
Server-Surrogate-Control
X-DataStream-Origin-MEX-Latency
URI
X-Nananana
X-DataStream-MidMile-RTT
X-GDPR
X-Dynatrace
Pics-Label
X-CSRF-Token
X-IPS-LoggedIn
X-RCS-Backend
TSSecure
X-SRV
Cdn-Request-Time
X-VC-Cache
X-Edge-Server
X-MServer
X-Worker
Cdn-Host
X-Varnish-Url
X-Skip-Cache
X-ID
DataCenter
X-ND-Cache
X-HS-Status
X-Instart-Isnd
X-VG-WebCache
X-Fastly-Cache-Hits
A
Is-Session-Tracking
Get-Access-Time
PageType
X-From-Cache
X-B3-SpanId
X-Sucuri-Cache
X-Swift-Error
X-BE
X-GoCache-CacheStatus
X-PJAX-URL
X-Port
HTTPS
Hostname
Dynatrace
Proxy-Firewall
X-SplitTest
X-LJ-Flow-ID
X-VWS-Id
X-AWS-Id
X-Gen-Id
Powered
X-Pf-Uncompressing
X-Bug-Bounty
X-Server-W
Odigeo-Trace-Id
X-Amzn-Remapped-Connection
X-GZIP
X-Amzn-Remapped-Date
X-Backend-TTL
X-NGINX-Cache
X-Cache-Ttl
X-Fe
Requestid
X-ORIG-AKA-EDGE
X-SN
X-VarnPar2
X-Owner
Serverid
X-Amz-Meta-S3b-Last-Modified
Cache-Hits
X-Varnish-URL
X-PAGE-TYPE
WebServer
X-LiteSpeed-Cache-Control
X-ORIG-AKA-COUNTRY-CODE
X-VC
X-Alicdn-Da-Ups-Status
X-RequestId
X-PF-Uncompressing
X-Pc-Subdomain
RequestUuid
X-HostName
X-SB
X-GEO
X-ServerName
X-Serial
X-RAMCache
T-Server
Location
Xet-Cookie
Correlation-Id
X-Akamai-ERRuleID
X-R9-Blue-Green-Version
X-FW-Dynamic
NnCoection
X-Akamai-SSL-Client-Sid
X-Ms-Request-Id
X-HTML-Edge-Cache
X-Akamai-ERPolicy
X-CS
SID
X-Dw-Trace-Id
X-Developed-By
X-Ms-Lease-Status
X-LiteSpeed-Tag
X-Ms-Version
X-Ms-Blob-Type