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
X-Frame-Options
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
CF-RAY
Expect-CT
Accept-Ranges
X-XSS-Protection
Pragma
X-Powered-By
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Alt-Svc
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-Xss-Protection
X-UA-Compatible
X-Served-By
X-Download-Options
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Request-Id
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
Access-Control-Allow-Credentials
Content-Security-Policy-Report-Only
Accept-CH
X-DNS-Prefetch-Control
X-Runtime
Accept-CH-Lifetime
X-AspNet-Version
X-Drupal-Cache
X-Check
X-Generator
X-Cache-Status
X-Ua-Compatible
Server-Timing
X-Cacheable
X-Request-ID
Timing-Allow-Origin
X-Envoy-Upstream-Service-Time
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
X-Content-Security-Policy
Feature-Policy
Access-Control-Expose-Headers
Content-Encoding
X-CDN
Upgrade
Status
X-AspNetMvc-Version
CF-Ray
Access-Control-Max-Age
X-Amz-Request-Id
Cf-Edge-Cache
X-Amz-Id-2
X-Via
Host-Header
EagleId
Permissions-Policy
Keep-Alive
Request-Context
X-Cache-Group
X-Backend
X-Robots-Tag
X-UA-Device
P3p
X-AH-Environment
X-Hacker
X-Server
X-Proxy-Cache
X-Turbo-Charged-By
X-Rq
X-Age
X-Ws-Request-Id
Xkey
X-Vhost
Cf-Apo-Via
X-Amz-Version-Id
X-Dispatcher
X-Swift-CacheTime
X-Swift-SaveTime
Grace
X-Server-Powered-By
Allow
X-LiteSpeed-Cache
Ali-Swift-Global-Savetime
X-Varnish-Cache
X-OneAgent-JS-Injection
X-Page-Speed
X-Pingback
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Dns-Prefetch-Control
X-Cache-Lookup
X-Device
EagleEye-TraceId
X-WebKit-CSP
X-Host
Cf-Railgun
X-Backend-Server
X-Server-Id
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Response-Time
X-Readtime
X-Ruxit-JS-Agent
Surrogate-Control
X-Akam-SW-Version
X-HW
X-Cloud-Trace-Context
Request-Id
X-Node
Content-Location
X-Country
X-Nginx-Cache-Status
X-Application-Context
X-Nginx-Upstream-Cache-Status
Accept-Ch-Lifetime
X-NWS-LOG-UUID
X-Country-Code
X-Litespeed-Cache
Service-Worker-Allowed
X-ASPNET-VERSION
X-Content-Type
X-Trace
X-Url
Cache-Tag
X-Clacks-Overhead
Rating
X-Amz-Server-Side-Encryption
X-Rack-Cache
X-Times
X-Vname
X-PC
X-TtlSet
Cross-Origin-Opener-Policy
X-Edge
X-Mcache
X-Midtier
X-Daa-Tunnel
X-Browser-Type
X-FTR-Request-ID
X-Server-Name
Nginx-Cache
X-Powered-By-Plesk
X-CST
AR-PoweredBy
AR-Request-ID
AR-SID
AR-ATIME
X-Cnection
X-Cache-TTL
Accept-Ch
X-ESI
X-Ac
X-GitHub-Request-Id
X-Element-Page-Cache
X-D2id
Edge-Control
X-GoogleNews-Bot
X-Kinja
X-Kinja-Revision
X-Exp-Variant
X-Exp-Id
Verso
X-Cdn-Fetch
X-Kinja-Server
X-Kinja-Build
X-Webkit-Csp
X-MS-InvokeApp
X-Ser
AR-CACHE
X-Vcap-Request-Id
X-Abt-Application-Version
X-Upstream
X-FastCGI-Cache
X-Navigation-Version
X-Dw-Request-Base-Id
X-ECACHE
Fastly-Restarts
X-B3-TraceId
SPRequestDuration
SPIisLatency
X-Mod-Pagespeed
X-Amz-Rid
X-Instrumentation
X-Kraken-Loop-Name
X-Erf-Bev-Bev
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev-Is-Generated
X-SharePointHealthScore
SPRequestGuid
X-Client-IP
X-PDP-UNCACHING-HASH
X-Kinsta-Cache
X-Edge-Location-Klb
X-Goog-Hash
X-ARC
X-Ratelimit-Limit
X-Powered-CMS
X-Middleton-Display
X-Sol
X-Mg-S
Pagespeed
Display
X-NF-Request-ID
S
Edge-Cache-Tag
X-Oneagent-Js-Injection
X-Amzn-Trace-Id
Cache-Status
X-Version
Access-Control-Request-Method
X-Middleton-Response
Response
X-VARITI-CCR
RTSS
X-Cache-Key
X-Forwarded-For
Realpath
X-T
X-Content-Digest
Cross-Origin-Resource-Policy
X-TraceId
X-Recruiting
X-Correlation-Id
X-Fastly-Request-ID
X-ORACLE-DMS-RID
X-Varnish-TTL
X-Cached
Fastcgi-Cache
X-Ratelimit-Remaining
X-TTL
X-RateLimit-Remaining
X-MSEdge-Ref
X-Shield-Request-Id
Front-End-Https
MicrosoftSharePointTeamServices
X-Ua-Browser
X-Request-Received
X-Forwarded-Proto
X-Request-Processing-Time
MS-Author-Via
X-Protected-By
X-HS-Cache-Config
X-HS-Hub-Id
X-HS-Content-Id
TP-Cache
X-Frontend
Payment
X-LLID
X-PressLabs-Stats
Server-Node
Arr-Disable-Session-Affinity
Public-Key-Pins
Content-MD5
X-SRCache-Store-Status
X-SRCache-Fetch-Status
Count-Hit
X-TEC-API-ROOT
X-TEC-API-VERSION
X-Ruxit-Js-Agent
X-TEC-API-ORIGIN
X-HS-Combine-CSS
X-Accel-Expires
X-GUploader-UploadID
X-Distributor
X-LB-Cache
X-FTR-Cache-Status
X-FTR-Balancer
X-Country-Code-Real
X-FTR-Backend
X-FTR-Backend-Server
X-Kong-Proxy-Latency
X-Origin-Server
X-Kong-Upstream-Latency
X-Server-ID
X-NODE
X-Ezoic-Cdn
X-FTR-Expires
X-HP-Trace-Id
X-Jurisdiction
X-HP-Webp
X-Microsite
X-Request-Handler-Origin-Region
X-Ttl
X-Newrelic-App-Data
X-Www-Served-By
Accept-Charset
X-Content-Security-Policy-Report-Only
Host
X-Activity-Id
X-AppVersion
X-Az
X-ORACLE-DMS-ECID
X-App-Server
X-Varnish-Server
X-Cluster-Name
MRF-Tech
Cache-Tags
Mrf-Cache-Status
X-B3-TraceId-Primal
X-Amz-Meta-S3cmd-Attrs
Cleartype
X-Varnish-Backend
Retry-After
X-Goog-Metageneration
X-Ua-Device
Filterid
Surrogate-Key
X-Hits
Server-Name
X-Unique-Id
X-Git-Hash
Access-Control-Allow-Method
X-Debug
X-Id
X-Envoy-Decorator-Operation
X-NGENIX-Cache
X-Azure-Ref
X-Geo-Country
X-Logged-In
X-Upgrade-Enabled
X-Load-Cache
X-Hostname
X-FB-Debug
X-CSRF-Token
TCN
TP-L2-Cache
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Proxy
X-TT
X-Seen-By
X-Grace
Section-Io-Cache
X-B
X-Request-Guid
DC
X-Cache-Control
X-Revision
X-Fb-Rlafr
X-F-Cache
Viewport
X-Contextid
X-B3-Sampled
X-CCDN-CacheTTL
X-CCDN-Origin-Time
Healthy
X-Hcs-Proxy-Type
X-Trace-Id
X-Type
X-Pinterest-Rid
Pinterest-Generated-By
Pinterest-Version
X-Time
Referer-Policy
X-Goog-Stored-Content-Length
X-Goog-Generation
X-Mobile
X-Goog-Stored-Content-Encoding
X-Goog-Storage-Class
X-N
Fastly-SWR
Fastly-SIE
X-XRDS-LOCATION
Paypal-Debug-Id
X-DIS-Request-ID
Content-Disposition
X-WP-CF-Super-Cache-Cache-Control
X-WP-CF-Super-Cache
X-Page-Id
X-Debug-Info
X-Varnish-Grace
X-Varnish-Ttl
X-Magnolia-Registration
X-Via-JSL
X-Px
X-Origin-Cache
X-Webkit-CSP
X-Amz-Replication-Status
Version
X-Ratelimit-Reset
X-Whom
X-Aws-Lambda-Call-Status
X-Datadog-Parent-Id
X-Datadog-Trace-Id
X-Datadog-Sampling-Priority
X-Content-Options
X-RemovedCookies
X-ProcessESI
X-G
X-UUID
X-Adobe-Content
X-Node-Name
X-Template
X-Tumblr-User
X-Oracle-Dms-Ecid
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Tumblr-Pixel-1
X-Debug-IsConnected
X-Rule
X-Debug-IsPreview
X-Adobe-Loc
X-App-Environment
NGB
X-Source
X-Wix-Request-Id
MS-CV
X-Wormhole-Sdk
Ms-Operation-Id
X-RTag
VIX-Pulpo-Upstream-Status
VIX-Pulpo-Node
X-Hl-Ver
X-Storage
X-Yottaa-Optimizations
SD-X-WS
X-Datadog-Sampled
X-Yottaa-Metrics
Charset
X-Backend-Name
X-Signature
X-Region
X-B-Cache
X-Rendered-As
X-Proxy-Cache-Info
X-Device-Type
X-User-Agent
X-Is-Bot
X-NYM-Debug-Backend
X-Instance
X-Cacheable-TTL
GEO-INFO
Country
Amp-Access-Control-Allow-Source-Origin
X-Status
Cross-Origin-Window-Policy
X-FW-Server
X-FW-Type
X-FW-Version
X-FW-Serve
X-FW-Static
X-FW-Hash
X-FW-Dynamic
X-ServerID
X-L-Path
X-Cache-Age
X-Environment-Context
ServerID
X-IPS-LoggedIn
Countrycode
X-Cache-Grace
X-EdgeConnect-Cache-Status
X-Real-IP
X-NWS-UUID-VERIFY
Akamai-GRN
X-RM-Cache-TTL
Front
X-Cache-Hit
X-Amzn-Remapped-Content-Length
X-Rid
SRV
X-WP-CF-Super-Cache-Active
Liferay-Portal
X-Framework
X-Language
X-Ismobilevalue
X-AB
X-Air-Pt
X-ECache
X-Xrds-Location
X-WebKit-CSP-Report-Only
OT-Force-Account-Verify
X-Sucuri-Cache
X-Sucuri-ID
X-B3-SpanId
X-Akamai-Request-ID2
X-Content-Powered-By
X-Nf-Request-Id
X-Oracle-Dms-Rid
X-Servername
X-UA
X-Air-Trace-Id
X-VC-Cache
X-Fastly-Request-Id
X-Air-Hostname
X-VC
X-Air-Source
From-Origin
Backend
X-RID
Xet-Cookie
X-Mode
X-DataDome
X-SRV
Accept-Language
Upgrade-Insecure-Requests
X-Api-Version
Refresh
X-Cache-Time
X-URL
X-Handled-By
Webserver
Access-Control-Request-Headers
X-Cache-Status-Check
LB
X-HTML-Minification-Powered-By
X-Tt-Logid
X-JoinUs
Filters
X-RCS-CacheZone
Meta-Geo
X-Rn-Rsrv
Cache
X-SaId
X-UPSTREAM-Address
X-Rewrite-Enabled
ServedBy
X-Webstats-RespID
X-Git-Commit
Property-Id
TWC-Locale-Group
TWC-GeoIP-Country
TWC-Device-Class
TWC-Connection-Speed
TWC-GeoIP-LatLong
Webcakes-Region
TWC-Privacy
X-Hosted-By
Webcakes-App-Name
X-Provided-By
X-Origin-Hint
X-Labrador-Cache-Channel
X-Origin-Date
X-Xfnlog-Site
Webcakes-App-Version
X-PHP-Host
X-Cache-Operation
X-Cache-Rule
X-Adobe-Source
X-R9-Blue-Green-Version
X-Varnish-Age
X-Generated-By
X-S
X-Tumblr-Pixel-2
X-Cms-Context
X-Container-Uri
X-Fetched-On
X-Tcp-Rtt
X-ProxyCache-Key
X-ProxyCache-Status
X-Is-Desktop
X-Ms-Request-Id
X-Is-Supported-Browser
X-Is-Mobile
X-Accel-Version
X-Tncms
X-Loop
X-Cluster
X-Logging-Id
X-Locale
X-Httpd
X-Forwarded-Host
X-Lambda-Id
X-Is-Tablet
X-Cache-Debug
X-Geo-Region
Section-Io-Id
X-Web-Node
Url
X-Browser-Name
X-Skip-Cache
X-Served-From
X-BYPASS-REASON
X-Tb
Web-Mar-Node
X-Reqid
X-Site-Version
X-Ms-Version
X-Akamai-Edgescape
X-Endurance-Cache-Level
X-No-Session
X-Scope-Id
X-Redis-Cache
Atl-Traceid
Apigw-Requestid
X-Optimistic-Header
X-IPLB-Request-ID
Selected-Fe
X-Soup
X-Director
X-Storefront-Renderer-Rendered
X-Shopify-Stage
X-Detected-As
X-IPLB-Instance
Mn-Server-Ip
X-Timing-Wait
X-Frame-Option
X-Edge-Location
X-Varnish-Cache-Hits
X-Format
X-Proxy-Build
X-VCT
X-Say-TTL
X-SayCDN-TTL
X-Varnish-Beresp-Grace
X-Request-URI
X-Alternate-Cache-Key
X-Cache-Host
X-Say-Cacheable
X-Restarts
X-Origin
X-Upstream-Ct
X-INCAP-ABP
X-Upstream-Ht
X-Proxied
X-Mg-Request-UUID
Xserver
X-VWS-Id
X-Extlb
X-RateLimit-Limit
X-LJ-Flow-ID
X-AWS-Id
X-Routing-Service
X-Cloudmap
X-Zipkin-Id
X-Sorting-Hat-PodId
X-ShardId
X-Sorting-Hat-ShopId
X-ShopId
Frame-Options
X-GeoCountry
Onion-Location
X-GeoCode
X-Vcl-Version
X-Nginx-Cache
X-Azure-Ref-OriginShield
Expiry
X-Lagoon
X-Connection-Hash
WPO-Cache-Status
X-CDN-Forward
WPO-Cache-Message
Source
X-Vcache
Thinkindot-Control
X-CMSURLCustom
X-Generation-Time
X-Thinkindot-L3
X-WP-CF-Super-Cache-Cookies-Bypass
TDXMobile
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
X-Shield-Cache-Expires
Protected
X-Cache-Expired-At
X-Drupal-Cache-Contexts
X-Drupal-Cache-Tags
Cdn-Requestid
X-Cdn-Origin
X-Origin-CC
X-Origin-TTL
Fastcgi-Useragent
Environment
X-Proxy-Cache-Status
Priority
X-PHP-Backend
X-B3-Traceid
X-Pass-Why
X-Cache-Action
X-Vercel-Id
X-Worker
X-Vercel-Cache
Sid
Cache-Hits
Uber-Trace-Id
X-GEO
X-Rocket-Nginx-Serving-Static
Azure-Version
Azure-SiteName
Azure-SlotName
Azure-RegionName
Azure-InstanceId
X-TA-CDN-Provider
Node
X-App-Version
X-ID
X-Urbn-Context-Path
X-Urbn-Site-Id
X-Buckets
X-Cluster-Node
Locale
CF-IPCountry
CDN-CachedAt
CDN-Cache
CDN-EdgeStorageId
CDN-RequestPullCode
CDN-PullZone
X-Aspnetmvc-Version
Cross-Origin-Embedder-Policy
CDN-Uid
CDN-RequestCountryCode
CDN-RequestPullSuccess
X-FB-TRIP-ID
Cache-Tv-Group
X-XRDS-Location
X-Tumblr-Pixel-3
X-RateLimit-Reset
X-Auth-Group-Type
X-Cache-Server
X-Fastcgi-Cache
Alternate-Protocol
DB-Nickname
AMP-Access-Control-Allow-Source-Origin
X-NGINX-Cache
X-Dc
X-Pad
X-Server-W
X-Tx-Id
X-A
A
X-Ec-Fail
X-Ec-GeoHdr
X-Level-Front-Cache
X-DefHash
X-Origin-Expires
X-Gzip
X-Conf
X-Edge-Server
Meta-Geo-Continent
Surrogated-Key
T-Server
X-Cache-NE
X-GeoIP-City
X-Ig-Push-State
X-Origin-Cache-Key
X-Cache-TTL-Remaining
Sslversion
X-Org
X-Op-Id-All
X-D
X-Custom-Header
X-Service
Origin-Agent-Cluster
X-DefElseHash
Magicmarker
Odigeo-Trace-Id
User-Cache-Control
X-Dispatcher-Server
Lang
X-Content-Age
Ngx.Var.Host
Rendered-Blocks
X-Core-Value
X-Req
MD5-Digest
X-ND-Cache
X-Developer
X-Viewer-Country
X-TIM-N
X-V-Cache
X-BCube-Filmed-By
X-Varnish-CookieHashed-On
X-A-Wwc
X-A-Dgt
X-A-Ccd
X-Ig-Origin-Region
X-A-Dcw
X-Varnish-CookieINHashed-On
X-Aed
X-Vdms-Version
Content-Secure-Policy
X-Via-Fastly
DCR-Decision-By
X-Bc-Bl
X-Fastly-Backend
X-Varnish-Remaining-TTL
DCR-Processing-Time-Ms
Wxu-Next-Region
X-A-Dam
X-Esi-Check
X-Vtex-Remote-Cache
Gannett-Cam-Experience-Id
X-SRCache-Key
Candidate-Md5Url
X-ScT
X-Rojux
X-Cache-Id
Cdn-Host
Wxu-Next-Commit
Wxu-Next-Hostname
X-Epic-Correlation-Id
X-Bl-Debug
X-Generated-On
Cdn-Request-Time
X-Client-Ip
Mime-Version
Country-Code
X-Fastly-Cache
Edge-Cache
Is-Eu
X-DPWN-IS-SECURE
Fastly-Backend-Name
Esi-Enabled
Host-ID
Fastly-SSL
RNT-Machine
V-Age
Vix-Hermes-Req-Id
X-Block-Status
X-Cache-Bucket
Tube-Return
Tube-Got-Eval
Tube-Got-Results
X-Bip
X-Acquia-Purge-Cdn-Unconfigured
X-Backend-Instance
X-App-Name
X-B3-Trace-ID
X-Amz-Storage-Class
X-AK-Request-ID
X-Ad-Load-Variation
X-Aicache-OS
Tube-Get-Contents
X-Cache-Info
Platform
Powered-By
Producers
PFcat
Origin
X-Debug-Cache-Store
X-Debug-Cache-Fetch
Req-ID
Content-Style-Type
X-CacheTTL
Ssr
X-Cdn-Srv
Server-Host
RNT-Time
X-Clientip
NM-Fastcgi-Cache
X-GeoIP
X-Origin-Time
X-Origin-Response-Time
X-Nyt-Route
X-PAYTM-SRV-ID
X-Platform
X-Thanos
X-Policy
Content-Script-Type
X-NodeID
X-Mvc-Supplant-Cachable
X-Wikidot-Static-Cache
X-Mly-Id
X-UA-Device-Type
X-LiteSpeed-Cache-Control
X-Node-Id
X-NMSegId
X-Powered-By-VTEX-Cache
X-Proto
X-Scheme
X-SB
X-Request-Time
X-WA-Info
X-SD-PageType
X-Server-IP
X-Sn-Servicetimems
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
X-Pubstack
X-Test
X-Wikidot-Backend
X-RateLimit-Limit-Second
X-RateLimit-Remaining-Second
X-Tb-Optimization-Total-Bytes-Saved
X-Region-Sid
XM
HostName
Adler-Geo
AKAMAI
X-GeoIP-Region-Code
X-GoCache-CacheStatus
X-VG-TLSProxy
X-HN
Click-Count-Action-Start
X-GeoIP-Country-Code
X-Geo-Header
Cdncip
Cdnsip
X-VG-WebCache
X-Gdpr
Cache-Provider
X-Gen-Mode
X-Hnp-Log
X-HS-Content-Campaign-Id
X-Men
X-LSADC-Cache
X-Fmm-Version
X-Micro-Cache
X-FC-Vary-Parameters
X-Varnish-Director
X-Forwarded-Site
X-Varnish-Hostname
X-Jobs
X-VTEX-Cache-Server
X-VarnishDD-TTL
X-VTEX-Cache-Time
X-Loc
Click-Count-Error
X-Slack-Shared-Secret-Outcome
X-Varnishpool
X-Varnish-Beresp-Status
X-Varnish-Authentication
X-Var-Ttl
X-BBC-Edge-Cache-Status
X-Slack-Backend
X-Contensis-Viewer-Groups
X-Depends
X-Location
X-Cache-FS-Status
Yak-Timeinfo
X-Human
X-Auto-Login
X-Eu-Site
X-Ec-Custom-Error
X-Hash
X-Date
X-CUA
X-We-Are-Hiring
X-Request-Host
X-Request-Start
X-Section
X-Proxied-Request
X-Pool
X-Mvc-Supplant-OutputCached
X-Nginx-Cache-Key
X-Csrf-Jwt
X-Cache-Aspx
X-CGP
Pramga
Canary
Origin-EX
Origin-CC
Proxy-Firewall
Cache-Key
Server-Ext
Req-Svc-Chain
Release
CDCHOST
On-Server
Ha-Gx-Prefs
Machine
L5d-Success-Class
HA-Ipaddr
Mail-Subject
Gh-Request-Id
Cluster
DSUID
Fastly-GeoIP-CountryCode
L
C-Via
Web-Mar-Region
We-Hiring
Server-Hostname
X-Accel-Expires-Debug
X-Access
Fusion-Component-Id
Fusion-Content-Id
Fusion-Content-Source
W
Fusion-Deployment-Id
Fusion-Source
True-Client-Country-4JS
Apple-News-Services-Parsed-Url
Sever-Int
Apple-News-Services-Host
Fusion-Template-Id
Apple-News-Services-Request-Url
Apple-News-Services-Handled
X-HITS
X-DC
NGX
X-Device-Os
X-AIR-PT
X-Varnish-Beresp-Ttl
X-Varnish-Hits
Server-Info
X-Akamai-Transformed
X-Cs
X-Zone
Redirect-Candidate
X-NCache
X-From
BehaviorPad-Version
Debug
X-Up
CDN-RequestId
X-Jungle-Id
X-LB-ID
X-APP
X-Refresh
X-MP-GENERATED-AT
X-Tec-Api-Root
X-Tec-Api-Version
X-Tec-Api-Origin
Pics-Label
CloudFront-Viewer-Country
X-Vdms-Path
X-Cache-Backend
WP-Super-Cache
X-Parent-Response-Time
X-VHOST
X-B3-Parentspanid
GeoIP-Latitude
X-Servedbyhost
X-Via-Poph
X-HA-Backend
Fastly-Drupal-Html
X-Via-Popv
X-Via-Popn
X-CACHE-AGE
Fastly-Drupal-HTML
SID
X-Datadome
X-Uri
X-CDN-Cache-Status
X-Content-Length
X-Litespeed-Tag
X-PERF
X-Nananana
X-Newrelic-Synthetics
X-ApacheServer
X-LB-NoCache
X-VC-TTL
X-Nc
X-Render-Time
X-M-Log
X-M-Reqid
X-NewRelic-App-Data
X-CACHE-KEY
X-LiteSpeed-Tag
Datacenter
X-B3-Spanid
X-Cached-By
X-CS
Vc-Max-Age
X-DynaTrace-JS-Agent
X-RequestId
GeoIp-Country-Code
X-Dispatcher-Number
X-Wa
Resin-Trace
NtCoent-Length
X-Varnish-Beresp-TTL
X-ZONE
Locid
X-Amz-Meta-Cb-Modifiedtime
Server-ID
Product
Cdn
X-Original-Request-Id
X-VCache
X-Response-Served-From
X-IAuth-Set-Uid
FSS-Cache
X-Ckpd-Fst-Backend
True-Client-IP
X-TT-LOGID
X-TIME
X-Old-Content-Length
Srv
X-Esi
X-Bug-Bounty
X-Fpc
X-HostName
X-TX-ID
S-Rt
X-SERVER-NAME
Cf-Ipcountry
Uri
Serverhost
Ngx-Var-Key
X-Nf-Ats-Version
True-Client-Ip
X-Nf-Language
CDN
X-FPC
X-Nf-Country
ServerName
X-HubSpot-Correlation-Id
Tcn
X-Vgn-Hpd-Reason
X-Dynatrace-Js-Agent
X-Oracle-DMS-ECID
X-Cdn-Forward
X-Srv
X-Platform-Processor
X-Moov-T
X-Platform-Router
X-TH-Server
GeoIP-Country-Code
X-WA
X-Moov-Xdn-Version
Server-Id
X-Platform-Cluster
Request-ID
X-Dispatch
ServerHost
X-APP-VERSION
X-Vmg-Version
User-Agent
X-Vc
CacheControlHeader
X-Akamai-Device-Characteristics
X-Cdn-Cache-Status
Hostname
X-NC
X-Gamma-Serve
X-Info
Cf-Device-Type
X-COUNTRY
Srvid
Geoip-Latitude
Xc-Version
X-FL-QIT-DEBUG
X-Lb-Nocache
X-User
X-External-Request-Id
Cross-Origin-Embedder-Policy-Report-Only
X-B-Cookie
X-Webkit-Csp-Report-Only
X-S-Cookie
X-Destination
X-Application
X-Hit
X-Presslabs-Stats
X-Geo
X-Via-PopH
X-Ha-Backend
X-Zen-Fury
X-Via-PopN
X-Via-PopV
Expect-Staple
Cneonction
X-Cache-Date
X-Amz-Meta-Opti
Ohc-File-Size
Cloudfront-Viewer-Country
Origin-Trial
X-Rocket-Build-Number
X-Sigma-Backend
X-Sigma
X-ServedByHost
PICS-Label
X-Instance-Name
X-VCL-Version
X-VServer
X-Segment-20210421
X-API-Version
Epwk-X-Cache
X-V
Permission-Policy
X-Rollout
WZWS-RAY
N-Cache
X-App
X-CSRF-TOKEN
X-Limited
X-Ua
X-New
X-Branch-Name
X-Platform-Server
X-Lb-Id
X-Akamai-Pragma-Client-IP
X-Eligible
X-Correlation-ID
Rtss
X-Srcache-Store-Status
X-Srcache-Fetch-Status
X-Serial
XkeyRZ
X-Proxy-CacheRZ
X-Erf-Stays-Pdp-Viaduct-Migration-Web-V2
X-Sqd-Stime
X-Check-Cacheable
X-Sqd-Ctime
X-MiniProfiler-Ids
X-Wp-Cf-Super-Cache
Lb
X-Wp-Cf-Super-Cache-Cache-Control
Cmsid
X-Acquia-Site
Timeexpire
X-Acquia-Purge-Tags
X-Fastly-Backend-Reqs
Cmstype
Sm-Log-Id
X-Acquia-Application-UUID
X-Ftr-Request-Id
Ohc-Cache-HIT
X-DataCenter
X-MSEdge-Flight
X-Datacenter
X-MSEdge-Features
Ngx
X-Internal-TTL
Fl-Custom-Application
X-Web-Server
X-Service-Response-Time
X-ElasticPress-Query
X-Acquia-Application-Trace
X-LAGOON
X-Litespeed-Cache-Control
Load-Balancing
Servername
CountryCode
DataCenter
X-VTEX-Cache-Backend-Connect-Time
X-Via-Edge
X-Via-SSL
X-Via-CDN
Wpo-Cache-Status
Edge-Copy-Time
X-VTEX-Cache-Backend-Header-Time
X-Requestid
X-Snapshot-Date
Warning
X-Amz-Meta-S3b-Last-Modified
X-Ramcache
X-Th-Server
X-DynaTrace
Type
X-RAMCache
X-Amz-Meta-Sha256
X-Udemy-Cache-App-Namespace
X-Shopid
X-Sorting-Hat-Podid
X-Sorting-Hat-Shopid
X-Shardid
X-Origin-Upstream-Status
X-Dw-Trace-Id
X-IN-APIGATEWAY
X-IN-APIGATEWAYSSL
Wpo-Cache-Message