Threat Level: green Handler on Duty: Daniel Wesemann

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