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