Threat Level: green Handler on Duty: Johannes Ullrich

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