Threat Level: green Handler on Duty: Rob VandenBrink

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
X-Frame-Options
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
X-XSS-Protection
Accept-Ranges
Expect-CT
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
CF-Ray
X-Download-Options
X-Xss-Protection
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Request-Id
X-Adblock-Key
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Permitted-Cross-Domain-Policies
X-Request-ID
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-DNS-Prefetch-Control
X-Check
X-Generator
X-Cache-Status
X-Cacheable
Timing-Allow-Origin
X-Envoy-Upstream-Service-Time
X-Iinfo
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
Access-Control-Max-Age
X-Via
X-UA-Device
Server-Timing
Request-Context
X-Robots-Tag
X-Turbo-Charged-By
X-Amz-Request-Id
X-Cache-Group
X-Dns-Prefetch-Control
X-Amz-Id-2
EagleId
X-Backend
X-AH-Environment
X-Proxy-Cache
P3p
Keep-Alive
X-Server
X-Ws-Request-Id
X-Age
X-Ua-Compatible
Cf-Edge-Cache
Host-Header
X-Hacker
X-Vhost
X-Server-Powered-By
X-Rq
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
Allow
X-Swift-SaveTime
X-Swift-CacheTime
Ali-Swift-Global-Savetime
X-OneAgent-JS-Injection
X-LiteSpeed-Cache
X-WebKit-CSP
X-Page-Speed
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
Cf-Apo-Via
X-Device
Accept-CH
Cf-Railgun
X-Aws-Lambda-Call-Status
X-Pingback
X-Node
X-Server-Id
X-Host
X-Ruxit-JS-Agent
EagleEye-TraceId
X-Nginx-Cache-Status
Surrogate-Control
X-Akam-SW-Version
X-Readtime
Request-Id
X-Backend-Server
X-Cache-Spec
X-Cache-Lookup
X-Content-Security-Policy-Report-Only
X-HW
X-EdgeConnect-MidMile-RTT
X-EdgeConnect-Origin-MEX-Latency
X-Cloud-Trace-Context
X-Trace
X-Application-Context
X-Response-Time
Accept-Ch-Lifetime
Permissions-Policy
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
X-Edge
X-WebKit-CSP-Report-Only
X-Mod-Pagespeed
Accept-CH-Lifetime
Content-Location
X-Mcache
X-Content-Type
X-MS-InvokeApp
X-Country
X-Url
X-Litespeed-Cache
X-Clacks-Overhead
X-CST
X-PC
X-Vname
X-TtlSet
X-Amz-Server-Side-Encryption
X-Midtier
Rating
RTSS
Cache-Tag
X-ESI
X-Vcap-Request-Id
X-D2id
X-Element-Page-Cache
X-Exp-Id
X-Exp-Variant
X-Kinja-Server
X-Cdn-Fetch
X-GoogleNews-Bot
X-Kinja
X-Kinja-Build
X-Use-Magma
X-Kinja-Revision
X-Rack-Cache
Origin-Trial
Verso
X-VARITI-CCR
X-Server-Name
X-Ttl
X-Ac
X-GitHub-Request-Id
X-Powered-By-Plesk
Service-Worker-Allowed
X-Amz-Rid
X-Cnection
X-SharePointHealthScore
SPRequestGuid
X-Client-IP
X-Navigation-Version
Xkey
X-ECACHE
X-Abt-Application-Version
Edge-Control
SPIisLatency
SPRequestDuration
X-B3-TraceId
X-Upstream
X-Cache-TTL
Arr-Disable-Session-Affinity
X-Cached
X-NWS-LOG-UUID
X-Mg-S
X-Instrumentation
X-Kraken-Loop-Name
X-Erf-Bev-Bev-Is-Generated
X-Server-Lifecycle-Phase
X-Browser-Type
X-Erf-Bev-Bev
X-FastCGI-Cache
X-Dw-Request-Base-Id
X-Px
X-Varnish-TTL
X-Sol
X-Middleton-Display
Display
Pagespeed
X-Cache-Key
X-SRCache-Store-Status
X-NF-Request-ID
X-SRCache-Fetch-Status
X-Forwarded-For
Access-Control-Request-Method
Edge-Cache-Tag
X-Correlation-Id
X-Country-Code
X-Goog-Hash
Content-MD5
TCN
X-Powered-CMS
X-Ratelimit-Limit
X-Id
Front-End-Https
X-Ser
AR-PoweredBy
X-Webkit-Csp
AR-SID
Public-Key-Pins
AR-Request-ID
AR-CACHE
AR-ATIME
X-Version
X-Jurisdiction
X-HP-Trace-Id
X-HP-Webp
X-MSEdge-Ref
X-Content-Digest
X-Recruiting
X-T
X-RateLimit-Remaining
X-Amzn-Trace-Id
X-Middleton-Response
Response
Accept-Ch
X-Accel-Expires
TP-L2-Cache
TP-Cache
MicrosoftSharePointTeamServices
X-Shield-Request-Id
S
Nginx-Cache
Cache-Status
X-Daa-Tunnel
X-XRDS-Location
X-Request-Processing-Time
X-Request-Received
Server-Node
X-HS-Content-Id
X-HS-Hub-Id
MRF-Tech
X-B3-TraceId-Primal
X-HS-Cache-Config
Mrf-Cache-Status
X-HS-Combine-CSS
Cache-Tags
X-Distributor
X-Hits
Cross-Origin-Opener-Policy
X-Ratelimit-Remaining
X-Kinsta-Cache
X-LB-Cache
X-Edge-Location-Klb
X-Fastly-Request-ID
X-Origin-Server
X-Ratelimit-Reset
X-PressLabs-Stats
X-Ezoic-Cdn
X-Ua-Browser
Fastcgi-Cache
X-TEC-API-VERSION
X-TEC-API-ROOT
X-TEC-API-ORIGIN
Alternate-Protocol
Filterid
X-Grace
X-ORACLE-DMS-ECID
X-ORACLE-DMS-RID
X-Hostname
X-Frontend
Server-Name
X-Fastcgi-Cache
X-LLID
X-Geo-Country
X-Request-Handler-Origin-Region
X-DIS-Request-ID
X-Microsite
X-ECache
X-Rid
Healthy
X-FB-Debug
X-Varnish-Backend
X-Git-Hash
Cleartype
Payment
X-Debug-Info
X-Logged-In
X-Protected-By
X-Www-Served-By
X-Load-Cache
X-Page-Id
Realpath
X-Cluster-Name
X-Forwarded-Proto
X-NGENIX-Cache
DC
MS-Author-Via
X-DataDome
Content-Disposition
Access-Control-Allow-Method
X-ASPNET-VERSION
X-Origin-Cache
Charset
X-B3-Sampled
X-GUploader-UploadID
X-Goog-Metageneration
X-Upgrade-Enabled
X-Kong-Upstream-Latency
X-Kong-Proxy-Latency
X-Proxy
X-AppVersion
X-Activity-Id
X-Az
X-Seen-By
X-F-Cache
X-Amz-Meta-S3cmd-Attrs
X-Amz-Replication-Status
X-Fb-Rlafr
Count-Hit
Cross-Origin-Resource-Policy
Paypal-Debug-Id
X-Whom
X-Azure-Ref
X-Type
X-Revision
X-Contextid
X-B
X-App-Environment
X-Cache-Age
X-Is-Crawler
Surrogate-Key
Retry-After
X-Route-Name
X-Request-Guid
X-Providence-Cookie
X-Aspnet-Duration-Ms
Viewport
X-Flags
Accept-Charset
X-Akamai-Edgescape
X-Wix-Request-Id
X-B3-Traceid
X-TT
X-TTL
X-Hosted-By
X-Varnish-Server
X-Times
X-B-Cache
X-Aspnetmvc-Version
X-Signature
X-DynaTrace
Amp-Access-Control-Allow-Source-Origin
X-Language
X-Cache-Control
X-Source
X-App-Server
X-Envoy-Decorator-Operation
X-Mobile
X-VCache
X-Magnolia-Registration
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Goog-Storage-Class
X-Oracle-Dms-Rid
X-Oracle-Dms-Ecid
X-Varnish-Grace
X-Goog-Stored-Content-Encoding
X-Varnish-Ttl
Host
Version
Referer-Policy
WPO-Cache-Status
WPO-Cache-Message
X-XRDS-LOCATION
X-Cache-Rule
X-N
X-HTML-Minification-Powered-By
X-Server-ID
Refresh
X-Original-Request-Id
X-Tumblr-Pixel
X-EdgeConnect-Cache-Status
X-Cache-Time
Access-Control-Request-Headers
X-Response-Served-From
X-Tumblr-Pixel-0
X-Tumblr-User
X-Tumblr-Pixel-1
X-Rule
X-Varnish-Age
X-Cache-Status-Check
X-RTag
X-Cache-Grace
SD-X-WS
Protected
Ms-Operation-Id
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
X-G
X-Framework
X-Cacheable-TTL
X-Jobs
MS-CV
X-Amzn-RequestId
X-Tt-Trace-Host
X-Amz-Apigw-Id
X-Tt-Trace-Tag
X-Fastly-Request-Id
X-FW-Hash
X-FW-Serve
From-Origin
X-FW-Dynamic
X-Environment-Context
X-Backend-Name
CDN-RequestId
GEO-INFO
Section-Io-Cache
X-FW-Server
X-RemovedCookies
X-User-Agent
X-UUID
X-Content-Powered-By
X-L-Path
X-ProcessESI
X-FW-Static
X-FW-Type
X-FW-Version
X-Device-Type
X-Instance
X-Trace-Id
X-Status
Akamai-GRN
X-Page-View
X-Http-Reason
X-Drupal-Cache-Contexts
X-Drupal-Cache-Tags
X-Akamai-Request-ID2
X-Is-Bot
X-Cache-Expired-At
X-Rendered-As
X-Adobe-Content
NGB
X-Adobe-Loc
X-NYM-Debug-Backend
X-Region
X-Nginx-Cache
Front
Url
X-Servername
SRV
X-COUNTRY
X-Unique-Id
Accept-Language
X-CDN-Forward
X-Template
X-Debug-IsPreview
X-Debug-IsConnected
X-Pinterest-Rid
Pinterest-Version
Pinterest-Generated-By
X-Content-Options
Liferay-Portal
Fastly-SIE
X-Cache-Hit
Fastly-SWR
X-Yottaa-Optimizations
X-Yottaa-Metrics
Backend
X-Air-Source
X-Zen-Fury
X-Air-Trace-Id
X-Air-Hostname
X-RateLimit-Limit
Country
X-Newrelic-App-Data
X-DynaTrace-JS-Agent
X-Mode
Content-Secure-Policy
X-Time
X-Cache-Operation
X-Rocket-Nginx-Serving-Static
Node
X-Cache-Server
X-Real-IP
X-IPS-LoggedIn
Webserver
X-Tumblr-Pixel-2
Uber-Trace-Id
Filters
S-Rt
X-Generation-Time
X-UPSTREAM-Address
X-RN-RSRV
X-Proxy-Cache-Info
X-Tb
X-Amzn-Remapped-Content-Length
X-Content-Age
Meta-Geo
Onion-Location
X-Rewrite-Enabled
Azure-InstanceId
X-Timing-Wait
Azure-Version
Cache-Hits
X-Web-Node
Azure-SlotName
Azure-SiteName
Azure-RegionName
X-Proxy-Build
Selected-Fe
X-Uri
X-Locale
CF-IPCountry
X-Edge-Location
Cache-Name
X-Access
X-Skip-Cache
X-Cache-Action
X-Format
X-Cluster-Node
X-SayCDN-TTL
X-Sucuri-Cache
X-Varnish-Beresp-Grace
X-Soup
X-PHP-Backend
X-Ms-Version
X-Origin-Date
X-Server-W
X-Site-Version
X-Say-Cacheable
X-PHP-Host
X-Ms-Request-Id
X-Section
X-Sucuri-ID
X-Say-TTL
X-Proto
X-Labrador-Cache-Channel
X-Tumblr-Pixel-3
Property-Id
X-Routing-Service
ServedBy
TWC-Connection-Speed
ServerID
X-Origin-Hint
X-Zipkin-Id
DB-Nickname
X-VC-Cache
X-Sql-Count
X-Reqid
Cross-Origin-Window-Policy
X-Proxied
X-BYPASS-REASON
X-Sql-Duration-Ms
X-Debug
X-ProxyCache-Key
X-UA-Device-Type
X-ProxyCache-Status
X-Extlb
X-Forwarded-Host
X-Via-Fastly
X-Ua
X-Cache-Host
X-Cms-Context
TWC-Locale-Group
TWC-GeoIP-LatLong
TWC-GeoIP-Country
TWC-Privacy
X-Handled-By
X-R9-Blue-Green-Version
Webcakes-App-Version
Webcakes-App-Name
TWC-Device-Class
Webcakes-Region
X-ARC
Countrycode
WP-Super-Cache
X-IPLB-Request-ID
X-IPLB-Instance
X-SaId
X-LAGOON
X-JoinUs
Web-Mar-Node
Apigw-Requestid
X-Proxy-Cache-Status
X-AWS-Id
X-Adobe-Source
X-VWS-Id
X-FB-TRIP-ID
X-LJ-Flow-ID
X-Cluster
X-Detected-As
X-No-Session
Mn-Server-Ip
X-Optimistic-Header
X-Urbn-Site-Id
X-Urbn-Context-Path
Cache-Tv-Group
X-Node-Name
Locale
X-Cache-TTL-Remaining
X-Tt-Logid
Fastcgi-Useragent
X-GeoCountry
X-GeoCode
X-TIME
X-LSADC-Cache
X-WP-CF-Super-Cache-Cache-Control
X-WP-CF-Super-Cache
X-Ruxit-Js-Agent
X-Xfnlog-Site
X-App-Version
X-Director
Mime-Version
X-Tec-Api-Origin
Upgrade-Insecure-Requests
X-Tec-Api-Root
X-Tec-Api-Version
Source
X-Varnish-Hits
X-GEO
X-Oneagent-Js-Injection
CDN-Uid
CDN-PullZone
Frame-Options
X-Hl-Ver
CDN-RequestCountryCode
CDN-CachedAt
X-Buckets
CDN-EdgeStorageId
X-Generated-By
CDN-Cache
X-Mg-Request-UUID
Fastly-Drupal-HTML
X-Request-Time
X-Api-Version
X-Varnish-Cache-Hits
Xet-Cookie
X-Redis-Cache
X-Loop
CF-Cached-On
X-FireWall-Port
X-Origin-CC
X-RM-Cache-TTL
X-Cache-Debug
X-ServerID
X-Varnish-Hostname
X-Origin-TTL
X-TA-CDN-Provider
Load-Balancing
X-Datadog-Trace-Id
X-Tx-Id
X-URL
X-Datadog-Sampling-Priority
X-Datadog-Sampled
X-Datadog-Parent-Id
X-SRV
X-Akamai-Transformed
X-Alternate-Cache-Key
X-Sorting-Hat-PodId
X-Sorting-Hat-ShopId
X-Storefront-Renderer-Rendered
X-ShopId
X-Shopify-Stage
X-ShardId
X-Pass-Why
X-Served-From
X-Pubstack
X-Storage
X-Service
X-TNCMS
X-Endurance-Cache-Level
X-Air-Pt
Server-Info
X-Restarts
X-Location
Cache-Host
BehaviorPad-Version
X-Vdms-Version
X-Ec-Fail
X-Vdms-Path
X-A-Ccd
X-Destination
X-Developer
X-Ec-GeoHdr
X-A
WWW-Authenticate
X-Request-Host
TDXMobile
T-Server
X-Gdpr
X-Generated-On
Candidate-Md5Url
X-External-Request-Id
X-CSRF-Token
Thinkindot-CacheControl-Type
X-Epic-Correlation-Id
Thinkindot-CacheControl
Thinkindot-Control
X-D
X-Bc-Bl
X-Thanos
X-BCube-Filmed-By
X-TIM-N
X-Bip
X-B-Cookie
X-A-Wwc
X-Thinkindot-L3
X-Aed
X-Akamai-Device-Characteristics
X-Application
A
X-Cache-Date
X-Test
X-Conf
X-Core-Mission
X-CUA
X-SRCache-Key
X-A-Dcw
X-CMSURLCustom
X-A-Dgt
X-Cache-Info
X-Cache-NE
X-Cdn-Origin
X-A-Dam
Surrogated-Key
X-S-Maxage
Meta-Geo-Continent
X-Nyt-Route
Memcached
X-S-Cookie
Ngx.Var.Host
X-ScT
Edge-Cache
X-Newrelic-Synthetics
Odigeo-Trace-Id
NM-Fastcgi-Cache
X-Origin
Gannett-Cam-Experience-Id
X-Platform-Processor
X-Platform-Cluster
Lang
X-Platform-Router
X-Processor
X-Origin-Time
Xc-Version
X-S
X-Rojux
X-Rocket-Build-Number
MD5-Digest
X-We-Are-Hiring
Host-ID
DCR-Decision-By
DCR-Processing-Time-Ms
X-Mobile-URL
Redirect-Candidate
X-Sigma-Backend
Release
X-Sn-Servicetimems
Sslversion
Server-Host
Rendered-Blocks
X-Httpd
X-Hash
X-Mid
X-Loc
X-Men
X-Level-Front-Cache
DSUID
X-Sigma
X-INCAP-ABP
Origin
Xserver
X-WP-CF-Super-Cache-Active
Is-Eu
Magicmarker
Vix-Hermes-Req-Id
We-Hiring
Mail-Subject
Platform
Req-Svc-Chain
X-Variation
X-Human
X-Is-Gdpr
X-JWT-State
X-SD-PageType
X-HS-Content-Campaign-Id
X-Has-Esi
X-GeoIP
X-GeoIP-City
X-Slack-Backend
X-Gzip
X-Mvc-Supplant-Cachable
X-Node-Id
X-Platform
X-Request-Start
X-Worker
X-Pool
X-Origin-Response-Time
X-Origin-Expires
X-Scale
X-NodeID
X-Org
X-VServer
X-Slack-Shared-Secret-Outcome
X-Date
X-Region-Sid
X-Varnish-Beresp-Status
X-Varnishpool
X-Var-Ttl
X-Cache-Id
X-Ad-Defer-Variation
X-Auto-Login
X-Cache-Bucket
X-SVT-ORM-VERSION
X-Dispatcher-Number
X-Fastly-Cache
X-Fetched-On
X-Gamma-Serve
X-Geo-Header
X-Esi-Check
X-SVT-ORM-RULES
X-Dispatcher-Server
X-Ec-Custom-Error
X-Vmg-Version
X-Accel-Expires-Debug
X-BBC-Edge-Cache-Status
X-CACHE-AGE
Fastly-Backend-Name
Section-Io-Id
CloudFront-Viewer-Country
Section-Io-Origin-Status
Section-Io-Origin-Time-Seconds
X-Correlation-ID
CacheControlHeader
Section-Origin-Responded
X-Provided-By
Fastly-GeoIP-CountryCode
Cache-Key
C-Via
Gh-Request-Id
AKAMAI
Adler-Geo
Environment
X-Parent-Response-Time
X-VG-TLSProxy
X-App
X-Server-IP
X-Cache-FS-Status
X-WA-Info
X-Azure-Ref-OriginShield
X-V-Cache
Cmsid
Apple-News-Services-Handled
Apple-News-Services-Host
Apple-News-Services-Parsed-Url
X-Accel-Buffering
Click-Count-Error
X-GeoIP-Region-Code
Click-Count-Action-Start
X-WADP-Cache
X-Clara-WADP
X-Fmm-Version
X-Forwarded-Site
X-FC-Vary-Parameters
X-Fastly-Backend
X-Nginx-Cache-Key
X-Frame-Option
X-Mly-Id
X-GeoIP-Country-Code
X-Varnish-Beresp-Ttl
X-Instance-Name
X-Irp-Debug
X-Device-Os
X-Developers
X-Cdn-Srv
X-Qloud-Router
X-Release
X-CacheTTL
Cmstype
X-Planisys-CDN-TTL
X-Owner
X-Planisys-CDN-Cache
X-Planisys-CDN-Rules
X-Core-Value
X-Cache-Tags
X-Wix-Viewer-Type
X-Varnish-CookieHashed-On
X-Varnish-CookieINHashed-On
Datacenter
Country-Code
X-DefElseHash
X-DefHash
X-Varnish-Remaining-TTL
Origin-EX
Machine
Kp-EeAlive
X-Response-By
On-Server
Origin-CC
Ssr
X-Req
Apple-News-Services-Request-Url
Web-Mar-Region
Tube-Got-Results
Tube-Got-Eval
Tube-Get-Contents
Tube-Return
Canary
User-Cache-Control
X-Platform-Server
Producers
HostName
PFcat
X-Op-Id-All
X-Ckpd-Fst-Backend
Cache-Provider
X-NCache
X-Gen-Mode
X-Hnp-Log
Wxu-Next-Hostname
X-HN
L
Wxu-Next-Commit
Wxu-Next-Region
NGX
Fastly-SSL
X-Zone
X-Old-Content-Length
Expect-Staple
X-SB
X-DPWN-IS-SECURE
Sever-Int
X-Block-Status
Server-Ext
X-VarnishDD-TTL
State
X-Aicache-OS
Server-Hostname
X-B3-Spanid
X-Vcl-Version
X-Mvc-Supplant-OutputCached
HA-Ipaddr
L5d-Success-Class
Ha-Gx-Prefs
X-Microcachable
X-LB-NoCache
X-Eu-Site
CDCHOST
X-Nananana
X-Minions-Version
X-Cache-Remote
X-CGP
X-Csrf-Jwt
X-Webkit-CSP-Report-Only
X-Via-CDN
X-NWS-UUID-VERIFY
X-FL-QIT-DEBUG
X-FL-EDGE
Env
X-From
Locid
Srvid
X-Tb-Optimization-Total-Bytes-Saved
X-Cache-Backend
X-Via-SSL
X-Via-Edge
Edge-Copy-Time
X-DC
X-Cache-Enabled
X-Up
X-Dc
X-VC
X-Refresh
Cluster
Pics-Label
GeoIP-Latitude
Decoy-Debug-TTL
Decoy-Debug-Key
Decoy-Debug-Status
X-Tid
X-Debug-Cache-Store
X-Cached-By
X-Generated-In
X-RCS-CacheZone
X-ND-Cache
X-Debug-Cache-Fetch
NtCoent-Length
X-Presslabs-Stats
Sid
Cache
X-Trace-ID
X-Edge-Pop
X-Lambda-Id
X-VCT
X-HS-Status
X-Srv
SID
X-Via-Poph
X-Vtex-Remote-Cache
X-Cs
X-Servedbyhost
X-Via-Popn
Fastly-Drupal-Html
X-DataCenter
X-Via-Popv
X-Render-Time
Memory
Time
X-Webkit-CSP
X-B3-SpanId
X-Upstream-Ht
CPC-Age
X-NewRelic-App-Data
X-Hcs-Proxy-Type
X-Vgn-Hpd-Variations-Key
X-Vgn-Hpd-Ssi
X-Vgn-Hpd-Cached
X-CCDN-Origin-Time
X-CCDN-CacheTTL
Svr
CPC-Cache
VNS-Age
X-Upstream-Ct
VNS-Cache
X-LB-ID
GeoIp-Country-Code
X-HA-Backend
X-TH-Server
X-Nc
X-Wa
X-Cache-Type
X-Esi
AMP-Access-Control-Allow-Source-Origin
X-Vc
Cdn
X-Client-Ip
X-CLOUD-TRACE-CONTEXT
X-Via-JSL
Server-ID
X-AIR-PT
X-Contensis-Viewer-Groups
X-ATG-Version
X-Cache-ASPX
X-Varnish-Authentication
Uri
True-Client-IP
X-ZONE
Srv
XServer
Hostname
X-Fpc
X-Amz-Meta-Cb-Modifiedtime
XkeyRZ
X-NGINX-Cache
X-Proxy-CacheRZ
X-Check-Cacheable
X-Varnish-Beresp-TTL
X-RateLimit-Limit-Second
X-RateLimit-Remaining-Second
X-PAYTM-SRV-ID
X-CF-Lambda-Fn
Esi-Enabled
X-AK-Request-ID
Cdncip
X-CF-Lambda-Version
Cdnsip
X-Gateway-Cache-Key
X-Gateway-Cache-Status
X-Gateway-Request-Id
X-Gateway-Skip-Cache
X-MP-GENERATED-AT
X-CS
X-Via-NSCOPI
M-TraceId
X-CSRF-TOKEN
X-Nf-Request-Id
X-EC-Lua
X-API-Version
X-CDN-Cache-Status
X-FPC
N-Cache
Resin-Trace
OT-Force-Account-Verify
X-Udemy-Cache-App-Namespace
YJS-ID
RNT-Machine
X-MSEdge-Features
RNT-Time
X-APP-VERSION
Eomportal-Instance
X-Orig-Expires
X-Shop-Environment
X-Tenant
X-Forwarded-Path
X-Bl-Debug
Lb
X-MSEdge-Flight
X-Wikidot-Backend
True-Client-Ip
X-Wikidot-Static-Cache
X-Datadome
X-Fastly-Country-Code
CDN
X-TX-ID
Request-ID
Sm-Log-Id
X-Policy
Ngx-Var-Key
X-Micro-Cache
X-Service-Response-Time
Path
Server-Id
X-B3-Trace-ID
X-App-Name
X-Cache-Ttl
X-WA
GeoIP-Country-Code
X-SIPLIST1
X-CACHE-KEY
IsBot
LB
X-Accel-Version
X-Vcache
X-Lb-Id
X-Cache-NGX
X-Request-URI
X-Ha-Backend
X-Logging-Id
X-VCL-Version
X-NC
X-Info
X-MCACHE
Hit
X-Git-Commit
X-Container-Uri
Pramga
X-Cdn-Diag
Cross-Origin-Opener-Policy-Report-Only
X-Edge-POP
X-Datacenter
X-RateLimit-Reset
X-Pod-Name
X-SERVER-NAME
X-ServedByHost
HIT
X-Cdn-Cache-Status
Ohc-File-Size
Location
X-Akamai-Pragma-Client-IP
X-Geo
X-Snapshot-Date
X-VG-WebCache
X-Via-PopV
X-Via-PopN
X-Srcache-Fetch-Status
X-Cdn-Forward
X-Srcache-Store-Status
FSS-Cache
X-Via-PopH
X-Tncms
Timeexpire
True-Client-Country-4JS
X-Cdn-Request-ID
X-Oss-Object-Type
V-Age
Epwk-X-Cache
X-Oss-Hash-Crc64ecma
Servername
X-Ctl-Mach
Proxy-Connection
Yjs-Id
ENV
Req-ID
Geoip-Latitude
X-Oss-Server-Time
X-Oss-Request-Id
XM
X-Oss-Storage-Class
X-Acquia-Purge-Cdn-Unconfigured
X-Cache-Expires
X-Wp-Cf-Super-Cache
X-Wp-Cf-Super-Cache-Cache-Control
X-Iauth-Set-Uid
X-UP
WZWS-RAY
X-Hyper-Cache
X-Amz-Meta-Opti
X-Clientip
X-Fastly-Backend-Reqs
CDN-RequestPullSuccess
X-Serial
X-Dw-Trace-Id
X-LiteSpeed-Cache-Control
CDN-RequestPullCode
X-Lb-Nocache
X-TT-LOGID
X-M-Log
X-MiniProfiler-Ids
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
Warning
X-M-Reqid
X-RAMCache
X-Akamai-ERRuleID
X-Acquia-Site
X-Acquia-Application-Trace
X-Qnm-Cache
X-Akamai-ERPolicy
X-Acquia-Application-UUID
X-Acquia-Purge-Tags
Cneonction
X-Moov-T
X-Moov-Xdn-Version
Content-Style-Type
Ec-Rule-Version
X-Swift-Error
X-B3-Parentspanid
X-Scheme
Content-Script-Type
X-Lsadc-Cache
CountryCode
X-F-Status
Ohc-Cache-HIT
PICS-Label
Traceparent
Inserted-Into-Cache-At
X-TraceId
X-WP-CF-Super-Cache-Cookies-Bypass
X-Cache-Ngx
X-Cached-Since
X-Mg-Cache
X-LiteSpeed-Tag
X-Fastly-Cache-Hits
Ngx
X-Th-Server
My-App
X-Webstats-RespID
X-IPS-Cached-Response
X-Litespeed-Cache-Control
MIME-Version
X-B3-ParentSpanId