Threat Level: green Handler on Duty: Didier Stevens

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
X-Frame-Options
Expires
Strict-Transport-Security
Content-Length
X-Content-Type-Options
Link
Accept-CH
Last-Modified
X-XSS-Protection
CF-Cache-Status
ETag
Expect-CT
Accept-Ranges
CF-RAY
Pragma
X-Powered-By
X-Cache
Via
Age
Content-Security-Policy
Alt-Svc
Report-To
NEL
Referrer-Policy
Access-Control-Allow-Origin
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-Served-By
X-UA-Compatible
X-Download-Options
Cf-Request-Id
X-Timer
X-Request-Id
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
X-Permitted-Cross-Domain-Policies
X-Xss-Protection
Access-Control-Allow-Credentials
Accept-CH-Lifetime
Content-Security-Policy-Report-Only
X-DNS-Prefetch-Control
X-AspNet-Version
X-Runtime
X-Ua-Compatible
Server-Timing
Permissions-Policy
X-Drupal-Cache
CF-Ray
X-Generator
X-Envoy-Upstream-Service-Time
X-Cache-Status
X-Cacheable
X-FRAME-OPTIONS
X-Iinfo
X-Drupal-Dynamic-Cache
Timing-Allow-Origin
Feature-Policy
X-CONTENT-TYPE-OPTIONS
X-Content-Security-Policy
Xkey
Upgrade
Access-Control-Expose-Headers
Content-Encoding
X-CDN
X-XSS-PROTECTION
Status
X-AspNetMvc-Version
Accept-Ch
Access-Control-Max-Age
X-Request-ID
Host-Header
X-Amz-Request-Id
X-Age
X-Amz-Id-2
Request-Context
Cf-Edge-Cache
X-Backend
X-Robots-Tag
X-Hacker
X-Via
Cf-Apo-Via
X-Turbo-Charged-By
X-Rq
X-Amz-Version-Id
X-Cache-Group
X-Vhost
Keep-Alive
X-AH-Environment
X-Dispatcher
X-UA-Device
X-Server
X-Proxy-Cache
EagleId
X-Ws-Request-Id
CONTENT-SECURITY-POLICY
X-OneAgent-JS-Injection
X-Varnish-Cache
Pantheon-Trace-Id
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
Grace
X-Server-Powered-By
X-Dns-Prefetch-Control
X-Pingback
Allow
X-Page-Speed
X-WebKit-CSP
X-Swift-CacheTime
X-Swift-SaveTime
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
Ali-Swift-Global-Savetime
X-LiteSpeed-Cache
X-Litespeed-Cache
X-FTR-Request-ID
X-Node
X-Device
EagleEye-TraceId
X-Host
X-Cache-Lookup
X-Backend-Server
Surrogate-Control
X-Country-Code
X-Server-Id
X-Ruxit-JS-Agent
X-Readtime
X-Cloud-Trace-Context
X-Akam-SW-Version
Cf-Railgun
X-HW
X-Response-Time
Cache-Tag
P3p
Content-Location
X-Amz-Server-Side-Encryption
Cross-Origin-Opener-Policy
X-Rack-Cache
X-Trace
X-Nginx-Upstream-Cache-Status
Service-Worker-Allowed
X-Nginx-Cache-Status
Request-Id
X-TraceId
X-Country
Fastly-Restarts
X-Clacks-Overhead
X-Content-Type
X-Application-Context
X-TtlSet
X-PC
X-Vname
X-Times
Rating
X-Cnection
X-ESI
X-Cache-TTL
X-Browser-Type
X-Edge
X-Midtier
X-Mcache
X-FTR-Backend
X-FTR-Backend-Server
X-FTR-Cache-Status
X-FTR-Balancer
X-Country-Code-Real
X-Vcap-Request-Id
Surrogate-Key
X-FTR-Expires
Accept-Ch-Lifetime
X-Ac
Origin-Trial
Edge-Control
X-Powered-By-Plesk
X-D2id
X-Kinja
X-Exp-Variant
X-Exp-Id
X-Element-Page-Cache
X-Abt-Application-Version
X-Cdn-Fetch
X-Kinja-Build
X-GoogleNews-Bot
X-Kinja-Revision
X-Kinja-Server
X-NWS-LOG-UUID
Verso
X-Upstream
X-FastCGI-Cache
X-Nf-Request-Id
X-B3-TraceId
X-ORACLE-DMS-RID
X-Navigation-Version
X-ECACHE
X-Mod-Pagespeed
X-Amz-Rid
Nginx-Cache
Display
X-Sol
X-Middleton-Display
Pagespeed
X-Pinterest-Rid
X-GitHub-Request-Id
Pinterest-Generated-By
X-Client-IP
Pinterest-Version
Akamai-GRN
X-Language
X-Instrumentation
Response
X-Middleton-Response
X-Server-Lifecycle-Phase
X-Erf-Bev-Bev-Is-Generated
X-PDP-UNCACHING-HASH
X-Kraken-Loop-Name
X-Erf-Bev-Bev
X-Envoy-Decorator-Operation
X-Ua-Device
S
Edge-Cache-Tag
AR-Request-ID
AR-PoweredBy
AR-ATIME
X-Goog-Hash
X-Resp-Is-Stale
X-MS-InvokeApp
X-ARC
X-Url
X-Ratelimit-Limit
X-Kinsta-Cache
X-Edge-Location-Klb
X-Ser
X-Distributor
X-Content-Digest
SPRequestDuration
SPIisLatency
SPRequestGuid
X-SharePointHealthScore
Access-Control-Request-Method
X-Cache-Key
X-Dw-Request-Base-Id
X-Ezoic-Cdn
Front-End-Https
X-NGENIX-Cache
X-Recruiting
X-Shield-Request-Id
RTSS
X-Amzn-Trace-Id
Cache-Status
X-Version
X-Powered-CMS
X-Varnish-TTL
X-Forwarded-For
Public-Key-Pins
X-T
Fastcgi-Cache
TP-Cache
X-MSEdge-Ref
X-Mg-S
Arr-Disable-Session-Affinity
X-Accel-Expires
X-Daa-Tunnel
X-HS-Content-Id
X-HS-Hub-Id
X-HS-Cache-Config
X-Ttl
X-Correlation-Id
X-Ismobilevalue
Realpath
X-Server-Name
X-Cluster-Name
Cache-Tags
X-Id
X-Cached
AR-CACHE
X-TTL
X-Fastly-Request-ID
X-Newrelic-App-Data
X-CST
X-HS-Combine-CSS
X-Request-Received
X-Request-Processing-Time
Payment
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Ua-Browser
X-Content-Security-Policy-Report-Only
X-DIS-Request-ID
X-RateLimit-Remaining
Content-MD5
X-Xrds-Location
X-GUploader-UploadID
X-ORACLE-DMS-ECID
X-Oneagent-Js-Injection
X-HP-Trace-Id
X-HP-Webp
X-Jurisdiction
X-HS-CF-Cache-Status
X-Cambria-Cache-Control
X-HS-Prerendered
X-Webkit-Csp
Content-Disposition
Count-Hit
X-Azure-Ref
X-Amz-Replication-Status
X-Ratelimit-Remaining
X-Ruxit-Js-Agent
X-SRCache-Fetch-Status
X-SRCache-Store-Status
X-Px
X-PressLabs-Stats
X-Page-Id
Cleartype
X-Unique-Id
X-Ratelimit-Reset
Accept-Charset
Cross-Origin-Resource-Policy
X-Logged-In
X-Proxy
X-Activity-Id
X-Request-Handler-Origin-Region
X-Origin-Server
X-FB-Debug
X-Protected-By
X-AppVersion
X-Az
X-Git-Hash
X-Microsite
X-Rid
Cross-Origin-Embedder-Policy
X-VARITI-CCR
X-Www-Served-By
X-Load-Cache
X-LLID
X-Template
X-Hits
X-Goog-Metageneration
YJS-ID
X-Varnish-Backend
MicrosoftSharePointTeamServices
X-Forwarded-Proto
X-Amz-Meta-S3cmd-Attrs
Version
Server-Node
Server-Name
X-Geo-Country
Ar-SID
X-Upgrade-Enabled
X-Amz-Apigw-Id
X-Amzn-RequestId
X-SERVER-NAME
X-Hostname
X-TEC-API-ROOT
X-Content-Options
X-TEC-API-VERSION
X-TEC-API-ORIGIN
X-Frontend
X-URL
X-Varnish-Server
X-B3-Sampled
Section-Io-Cache
X-App-Server
Viewport
X-TT
X-Status
X-Varnish-Grace
X-B3-TraceId-Primal
Mrf-Cache-Status
X-Device-Type
MRF-Tech
X-Request-Device-Id
Fastly-SIE
X-Grace
Alternate-Protocol
X-B
X-Fb-Rlafr
Fastly-SWR
Access-Control-Allow-Method
X-Server-ID
X-Goog-Stored-Content-Encoding
X-Goog-Generation
X-NF-Request-ID
X-Goog-Stored-Content-Length
X-Goog-Storage-Class
Upgrade-Insecure-Requests
Healthy
TCN
X-Request-Guid
X-Cache-Age
Host
X-Tt-Trace-Host
X-Tt-Trace-Tag
X-Magnolia-Registration
X-CSRF-Token
X-Buckets
X-WebKit-CSP-Report-Only
X-Varnish-Ttl
DC
X-EdgeConnect-Cache-Status
AKAMAI-GRN
Retry-After
X-Wormhole-Sdk
X-Debug
Amp-Access-Control-Allow-Source-Origin
X-Amzn-Remapped-Content-Length
X-Meli-Trace-Site
X-Meli-Trace-Bu
X-Contextid
X-Meli-Trace-Platform
X-Fastcgi-Cache
X-Cache-Control
AR-SID
MS-Author-Via
X-Revision
X-Tec-Api-Version
X-Tec-Api-Origin
X-Tec-Api-Root
X-WP-CF-Super-Cache
X-Instance
X-Response-Served-From
X-WP-CF-Super-Cache-Cache-Control
X-Original-Request-Id
X-Seen-By
X-NYM-Debug-Backend
X-Rendered-As
Cross-Origin-Embedder-Policy-Report-Only
X-Yottaa-Metrics
Cross-Origin-Opener-Policy-Report-Only
X-Origin-TTL
X-Is-Bot
X-UUID
X-Vcl-Version
X-Type
X-Yottaa-Optimizations
X-Adobe-Content
X-Adobe-Loc
X-Origin-CC
X-Hl-Ver
SD-X-WS
Access-Control-Request-Headers
X-G
X-COUNTRY
X-Akamai-Edgescape
X-Lambda-Id
X-Backend-Name
Section-Io-Id
X-Tumblr-User
X-Debug-IsPreview
X-Tumblr-Pixel-0
X-Tumblr-Pixel-1
X-Tumblr-Pixel
X-Debug-IsConnected
X-Framework
Charset
X-Content-Powered-By
X-Mobile
X-Mg-Request-UUID
X-ServerID
X-Trace-Id
NGB
X-INCAP-ABP
X-Cache-Hit
Ms-Operation-Id
X-Storage
X-Server-W
X-RTag
X-RM-Cache-TTL
MS-CV
X-App-Version
X-AB
X-Dc
X-N
X-ProcessESI
X-Akamai-Request-ID2
X-RemovedCookies
X-Request-Platform
X-Request-Bu
X-Request-Site
X-Cache-Status-Check
X-Cache-Time
Filterid
Frame-Options
Refresh
X-Time
X-DataDome
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
Cache
Protected
Accept-Language
SRV
X-Real-IP
X-Region
X-B3-SpanId
X-Node-Name
Webserver
CDN-RequestId
Paypal-Debug-Id
Onion-Location
X-User-Agent
X-Ms-Request-Id
X-Hcs-Proxy-Type
X-Ms-Version
Cross-Origin-Window-Policy
X-CCDN-CacheTTL
X-CCDN-Origin-Time
X-LB-Cache
Liferay-Portal
X-Whom
X-Datadog-Parent-Id
X-Datadog-Trace-Id
X-Cache-Expired-At
X-Datadog-Sampling-Priority
X-Datadog-Sampled
X-F-Cache
X-VC-Cache
X-IPS-LoggedIn
X-Requestid
X-WP-CF-Super-Cache-Active
X-Mode
X-HTML-Minification-Powered-By
X-Rocket-Nginx-Serving-Static
Priority
Backend
OT-Force-Account-Verify
X-Pass-Why
Xet-Cookie
X-Oracle-Dms-Ecid
X-HITS
X-L-Path
X-Environment-Context
X-Tb
X-Proxy-Cache-Info
X-VC
GEO-INFO
X-Service
X-App-Environment
X-Cacheable-TTL
Web-Mar-Node
X-Is-Desktop
X-Rn-Rsrv
X-Rewrite-Enabled
X-Browser-Name
X-Adobe-Source
X-Proxied
X-SaId
X-Routing-Service
Url
X-Tcp-Rtt
X-FW-Type
X-JoinUs
Filters
X-UPSTREAM-Address
Meta-Geo
X-Cloudmap
X-Loop
X-Is-Mobile
X-Debug-Info
X-Detected-As
X-Extlb
X-Is-Supported-Browser
X-Drupal-Cache-Tags
X-Endurance-Cache-Level
Fastcgi-Useragent
X-Is-Tablet
X-Tncms
ServerID
X-MP-GENERATED-AT
X-Servername
X-FW-Static
X-Vcache
X-Zipkin-Id
X-Handled-By
X-FW-Server
X-FW-Version
X-FW-Serve
X-Geo-Region
X-FW-Dynamic
X-FW-Hash
X-IPLB-Instance
TWC-GeoIP-LatLong
Webcakes-App-Name
Webcakes-Region
X-IPLB-Request-ID
TWC-Privacy
TWC-GeoIP-Region
TWC-Locale-Group
Webcakes-App-Version
Property-Id
X-Varnish-Beresp-Grace
X-Cdn-Origin
X-Shopify-Stage
X-Origin-Date
X-Wix-Request-Id
X-Web-Node
X-Logging-Id
Atl-Traceid
X-Format
X-Generation-Time
X-Director
X-Storefront-Renderer-Rendered
X-Locale
X-Alternate-Cache-Key
TWC-GeoIP-DMA
TWC-GeoIP-City
X-Rule
X-Origin-Hint
TWC-GeoIP-Country
X-Restarts
TWC-Device-Class
Country
X-Hit
ServedBy
X-Hosted-By
X-Cache-Host
TWC-Connection-Speed
X-Forwarded-Host
Mn-Server-Ip
X-Say-TTL
Uber-Trace-Id
X-Cms-Context
X-Scope-Id
X-Soup
X-Cluster
X-Edge-Location
X-Cluster-Node
X-Redis-Cache
X-SayCDN-TTL
X-Httpd
X-ProxyCache-Key
X-BYPASS-REASON
X-Cache-Action
X-Skip-Cache
X-Say-Cacheable
X-ProxyCache-Status
Apigw-Requestid
Environment
X-ECache
X-Labrador-Cache-Channel
X-S
X-Served-From
X-PHP-Host
X-Drupal-Cache-Contexts
X-RateLimit-Remaining-Second
X-RateLimit-Limit-Second
X-Mly-Id
X-FB-TRIP-ID
X-Auth-Group-Type
Selected-Fe
X-Proxy-Build
X-Origin
X-Origin-Cache
X-Fetched-On
X-R9-Blue-Green-Version
X-Urbn-Site-Id
Cache-Hits
Expiry
X-Tumblr-Pixel-3
DB-Nickname
X-Connection-Hash
X-Urbn-Context-Path
X-Timing-Wait
Locale
X-Tumblr-Pixel-2
LB
Countrycode
X-VCT
X-GEO
X-ShardId
X-Sorting-Hat-ShopId
X-No-Session
X-ShopId
X-Sorting-Hat-PodId
X-RCS-CacheZone
X-Source
X-Varnish-Cache-Hits
X-Yandex-Req-Id
YJS-CacheStatus
X-Cache-Debug
Front
X-Is-Modern-Browser
X-Varnish-Age
X-SRV
X-CLOUD-TRACE-CONTEXT
X-WP-CF-Super-Cache-Cookies-Bypass
X-Lagoon
WPO-Cache-Status
X-Api-Version
Xserver
X-XRDS-Location
Node
X-Provided-By
X-Webstats-RespID
X-Site-Version
X-Is-Mobile-Only
X-Platform
Cache-Tv-Group
X-UA
X-Varnish-Beresp-Ttl
X-Generated-By
X-Cdn
From-Origin
Cache-Provider
X-TA-CDN-Provider
X-Azure-Ref-OriginShield
X-Accel-Version
X-Fastly-Request-Id
X-Ua
X-B3-Traceid
Referer-Policy
X-NewRelic-App-Data
X-TT-LOGID
X-CDN-Forward
AMP-Access-Control-Allow-Source-Origin
X-Xfnlog-Site
X-CDN-Cache-Status
X-VC-TTL
X-Signature
X-B-Cache
Request-ID
X-NWS-UUID-VERIFY
X-Sucuri-Cache
X-PHP-Backend
CF-IPCountry
WPO-Cache-Message
Location
CDN-CachedAt
CDN-RequestCountryCode
CDN-Cache
CDN-PullZone
CDN-RequestPullCode
X-CACHE-AGE
X-Reqid
CDN-RequestPullSuccess
CDN-Uid
CDN-EdgeStorageId
X-Tb-Optimization-Total-Bytes-Saved
X-Optimistic-Header
X-Cache-Rule
X-Cache-Operation
X-Sucuri-ID
X-IsAdmin
Apple-News-Services-Handled
X-A-Dcw
Apple-News-Services-Request-Url
Rendered-Blocks
Fl-Custom-Application
X-A-Dgt
RNT-Machine
RNT-Time
Fastly-SSL
Lang
Redirect-Candidate
Meta-Geo-Continent
Log-Origin
Ngx.Var.Host
Odigeo-Trace-Id
Origin
Sslversion
Expect-Staple
X-A
Web-Mar-Region
MD5-Digest
Apple-News-Services-Parsed-Url
Apple-News-Services-Host
X-A-Ccd
Candidate-Md5Url
Cdncip
DCR-Processing-Time-Ms
Store-Cloud-Cache
Time-Cloud-Cache
DCR-Decision-By
Cdnsip
X-A-Dam
X-Clientip
X-Rojux
X-Rocket-Build-Number
X-S-Cookie
X-Save-Cache
X-Section
X-ScT
X-Request-URI
X-Origin-Expires
X-Ig-Origin-Region
X-HS-Content-Campaign-Id
X-Ig-Push-State
X-Loc
X-Old-Content-Length
X-Micro-Cache
X-Sigma
X-Sigma-Backend
X-VG-WebCache
X-VG-TLSProxy
X-Viewer-Country
X-Vtex-Remote-Cache
XM
Xc-Version
X-Vdms-Version
X-Vary-Devices
X-Slack-Shared-Secret-Outcome
X-Slack-Backend
X-SRCache-Key
X-Varnish-Authentication
X-Varnish-Director
X-GeoCountry
X-GeoCode
X-Cache-Aspx
X-Bl-Debug
X-Cache-NE
X-Cms-Device
X-Contensis-Viewer-Groups
X-Conf
X-BCube-Filmed-By
X-B-Cookie
X-Aed
X-Access
X-AK-Request-ID
X-Application
X-Auto-Login
X-Content-Age
X-Core-Value
X-Ee-Request-Date
X-Ee-Origin
X-Ee-Request-Id
X-External-Request-Id
X-Forwarded-Site
X-Fmm-Version
X-Ee-Generated-By
X-Ec-GeoHdr
X-Depends
X-D
X-Destination
X-Developer
X-Ec-Fail
X-A-Wwc
X-Action
X-Air-Pt
X-Tx-Id
X-Frame-Option
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
TDXMobile
X-Internal-TTL
ServerName
X-Ion-Healthy
X-Human
X-Hnp-Log
X-GoCache-CacheStatus
X-GeoIP-Region-Code
User-Cache-Control
X-Hash
V-Age
X-GeoIP-Country-Code
X-Ion-Hop
X-Nyt-Route
X-Moov-Xdn-Version
X-Moov-Xdn-Caching-Status
X-Origin-Time
X-Path
Origin-Agent-Cluster
Origin-CC
X-Moov-T
X-Men
X-Jungle-Id
Server-Host
X-Level-Front-Cache
RewriteTestHook
Req-Svc-Chain
RewriteTeamHook
X-GeoIP-City
Wxu-Next-Hostname
X-Backend-Instance
X-BBC-Edge-Cache-Status
X-Debug-Cache-Fetch
X-Debug-Cache-Store
X-DefHash
X-DefElseHash
X-Bc-Bl
X-Date
X-Content-Length
X-CGP
X-Bug-Bounty
X-Block-Status
X-CUA
X-Csrf-Jwt
X-App-Name
X-Ec-Custom-Error
X-Gdpr
X-From
X-Gen-Mode
Wxu-Next-Region
Wxu-Next-Commit
X-Policy
X-Accel-Expires-Debug
X-FC-Vary-Parameters
X-Epic-Correlation-Id
X-Akamai-Device-Characteristics
X-Aicache-OS
X-Eu-Site
X-Acquia-Purge-Cdn-Unconfigured
X-Fastly-Backend
X-Generated-On
Origin-EX
Cmstype
Host-ID
Cmsid
X-ApacheServer
X-Node-Id
Cluster
Country-Code
X-Varnish-CookieHashed-On
X-Varnish-Beresp-Status
X-Varnish-CookieINHashed-On
X-Varnish-Remaining-TTL
DSUID
CDCHOST
X-PAYTM-SRV-ID
Azure-InstanceId
Azure-RegionName
X-SD-PageType
X-Varnish-Hostname
X-Worker
Azure-SiteName
Azure-SlotName
X-PERF
Cache-Contol
X-Req
Azure-Version
X-V-Cache
X-We-Are-Hiring
X-Region-Sid
Nord-Request-ID
X-Shield-Cache-Expires
X-Thinkindot-L1
L
L5d-Success-Class
X-SIPLIST1
X-Sn-Servicetimems
X-Uri
X-Render-Time
X-Thinkindot-L3
IsBot
Gh-Request-Id
X-Up
Gannett-Cam-Experience-Id
Ha-Gx-Prefs
X-UA-Device-Type
X-Pubstack
X-Tt-Logid
X-Presslabs-Stats
X-SB
X-Mvc-Supplant-Cachable
X-DPWN-IS-SECURE
X-VarnishDD-TTL
X-NMSegId
X-Server-IP
N-Cache
X-Cache-Id
X-Via-Fastly
X-Org
X-CacheTTL
X-HN
X-Proto
X-Wikidot-Backend
X-Wikidot-Static-Cache
X-Vmg-Version
X-Vercel-Id
X-Gzip
X-Vercel-Cache
X-Gamma-Serve
PFcat
X-SVT-ORM-VERSION
X-SVT-ORM-RULES
X-Op-Id-All
X-Dispatcher-Server
X-Thanos
X-AB-Test
X-Amz-Storage-Class
X-Edge-Server
X-Esi-Check
Release
Mail-Subject
Machine
Fastly-Backend-Name
Click-Count-Action-Start
Cdn-Host
Cdn-Request-Time
Content-Script-Type
Content-Style-Type
Tube-Return
Fastly-GeoIP-CountryCode
We-Hiring
Tube-Got-Results
Tube-Got-Eval
Sid
Tube-Get-Contents
CacheControlHeader
Click-Count-Error
X-Cache-Date
Producers
Pragrma
X-B3-Trace-ID
Platform
X-Bip
NM-Fastcgi-Cache
C-Via
Origin-Site
X-Cache-FS-Status
X-Parent-Response-Time
X-AWS-Id
X-VWS-Id
X-LJ-Flow-ID
Source
X-Origin-Response-Time
X-ElasticPress-Query
X-Mvc-Supplant-OutputCached
X-Proxied-Request
Canary
X-TH-Server
X-LSADC-Cache
X-Litespeed-Cache-Control
X-Location
X-Pad
X-ZONE
X-Litespeed-Tag
S-Rt
X-Cs
Product
NGX
Debug
Powered-By
X-NGINX-Cache
Mime-Version
Fastly-Drupal-HTML
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