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American technology company
Cloudflare, Inc., is an American technology company headquartered in San Francisco, California, that provides a range of internet services, including content
Cloudflare
Free DNS service maintained by Cloudflare in partnership with APNIC
1 is a free Domain Name System (DNS) service by the American company Cloudflare that was started in a partnership with APNIC. The service functions as
1.1.1.1
occurred". Cloudflare. August 6, 2025. "Error 525: SSL handshake failed". Cloudflare. April 29, 2025. "Cloudflare support docs". developers.cloudflare.com.
List_of_HTTP_status_codes
Web forum
services to Kiwi Farms. In September 2022, Kiwi Farms was blocked by Cloudflare due to "an imminent and emergency threat to human life". Following intermittent
Kiwi_Farms
Type of cyber-attack
Services experienced an attack with a peak volume of 2.3 Tb/s. In July 2021, Cloudflare boasted of protecting its client from a DDoS attack from a global Mirai
Denial-of-service_attack
Adult manga website
operation, the site's administration remained entirely anonymous, utilizing Cloudflare services to mask the server's origin and avoiding direct legal confrontation
NHentai
American business executive (born 1974)
executive chairman, and chief executive officer of the technology company Cloudflare. With a net worth of US$5.5 billion as of February 2025,[update] Prince
Matthew_Prince
Content delivery network for web resources
open-source software (FOSS) content delivery network (CDN) hosted by Cloudflare. As of May 2021, it serves 4,013 JavaScript and CSS libraries, which are
Cdnjs
Random number generator
of entropy sourcing. The concept was later revived and popularized by Cloudflare, which uses a wall of lava lamps in its office lobby as one component
Lavarand
Imageboard website
off clearnet on August 5, 2019, when network infrastructure provider Cloudflare stopped providing their content delivery network (CDN) service. Voxility
8chan
Name resolver service for the Domain Name System
Cloudflare. Retrieved 2019-01-04. "The Nitty Gritty - Cloudflare Resolver". 24 January 2023. Cloudflare Inc (2018-03-31). "DNS over TLS - Cloudflare Resolver"
Public_recursive_name_server
Ability to seamlessly add computer resources to a given node
Google, Facebook, Twitter, Amazon, Microsoft, IBM Cloud, Oracle Cloud, or Cloudflare. Companies like Ericsson, AMD, and Intel provide hyperscale infrastructure
Hyperscale_computing
File sharing website focused on East Asian media
download a "free binary client". In April 2018, Cloudflare terminated its services to Nyaa. According to Cloudflare, "The pirate site tried to interfere with
Nyaa_Torrents
American artificial intelligence company
The New York Times. According to separate analyses by Wired and, later, Cloudflare, Perplexity uses undisclosed web crawlers with spoofed user-agent strings
Perplexity_AI
Spanish association football league
access to IP addresses belonging to Cloudflare within Spain in an effort to block piracy sites that were using Cloudflare's services. In February 2025, the
La_Liga
HTTP network protocol introduced in 2022
packages of nginx with HTTP/3 support have been released in February 2023. Cloudflare distributes a patch for nginx that integrates the quiche HTTP/3 library
HTTP/3
Software used to access websites
Retrieved 21 March 2025. "Browser Market Share Report for 2024 Q1". Cloudflare Radar. Cloudflare, Inc. 3 May 2024. Retrieved 22 March 2025. "World Internet Users
Web_browser
Digital archive by the Internet Archive
In September 2020, the Internet Archive announced a partnership with Cloudflare – an American content delivery network service provider – to automatically
Wayback_Machine
Content delivery network
jsDelivr is powered by other content delivery network providers, including Cloudflare, Fastly and BunnyCDN, and switches to another provider if one is experiencing
JSDelivr
Protocol to run DNS queries over HTTPS
DNS, before DoH itself was standardized and widely deployed. Apple and Cloudflare subsequently deployed the technology in the context of DoH, as Oblivious
DNS_over_HTTPS
American information technology company
given the hackers full access to execute any commands on the network, and Cloudflare admitted that a similar hack by the group on that company's network provided
Okta,_Inc.
Cryptographic protocols for securing data in transit
character in code used to parse HTML created a buffer overflow error on Cloudflare servers. Similar in its effects to the Heartbleed bug discovered in 2014
Transport_Layer_Security
Consortium on random number generators
League currently include Arbitrand, Automata Network, ChainSafe, cLabs, Cloudflare, DIA Association, Emerald Onion, École Polytechnique Fédérale de Lausanne
League_of_Entropy
TLS extension to serve multiple HTTPS sites
submitted to the IESG evaluation by January 2024. In September 2023, Cloudflare started to support ECH for hosted domains. In September 2023, Chromium
Server_Name_Indication
Cyberattack using mass login requests
Workers)". The Cloudflare Blog. Retrieved 12 May 2020. Ali, Junade (21 February 2018). "Validating Leaked Passwords with k-Anonymity". The Cloudflare Blog. Retrieved
Credential_stuffing
Internet ecosystem layer that addresses bottlenecks
optimization. Content delivery service providers include Akamai Technologies, Cloudflare, Amazon CloudFront, Qwilt (Cisco), Fastly, CDN77, BunnyCDN, EdgeNext,
Content_delivery_network
Catalog of Internet domain names
used in many other tools such as cURL. Services like Let's Encrypt and Cloudflare are known to use it for per-site rate limiting. According to Mozilla,
Public_Suffix_List
British software engineer and writer
Directors at Cloudflare, where he previously served as the company's Chief Technology Officer until March 2025. Prior to joining Cloudflare, he co-founded
John_Graham-Cumming
Static site generator written in Go
migrated from WordPress to a Jamstack solution with Hugo in 2017, and Cloudflare, which switched its Developer Docs from Gatsby to Hugo in 2022. Hugo takes
Hugo_(software)
Security bug affecting Cloudflare
Cloudbleed was a Cloudflare buffer overflow disclosed by Project Zero on February 17, 2017. Cloudflare's code disclosed the contents of memory that contained
Cloudbleed
Canadian businesswoman (born 1979)
of American content delivery network provider and cybersecurity firm Cloudflare. Michelle Zatlyn was born in July 1979 in Prince Albert, Saskatchewan
Michelle_Zatlyn
Content-addressable, peer-to-peer hypermedia distribution protocol
distributed through Cloudflare's IPFS gateway since July 2018. The phishing scam HTML is stored on IPFS, and displayed via Cloudflare's gateway. The connection
InterPlanetary_File_System
Shadow library search engine
site initially used Cloudflare's free tier as an additional caching and DDoS protection layer, taking advantage of Cloudflare's legal position that it
Anna's_Archive
Protocol for communicating between LLMs and applications
Microsoft Semantic Kernel, and Azure OpenAI. MCP servers can be deployed to Cloudflare. In April 2026, the AAIF held the MCP Dev Summit North America in New
Model_Context_Protocol
Open source web server and a reverse proxy server
web sites ranked nginx first with 33.8%. Apache was second at 26.4% and Cloudflare Server third at 23.4%. As of March 2020[update], Netcraft estimated that
Nginx
Option in Extension Mechanisms for DNS
self-serve web archiving tool Archive.today has expressed concern over Cloudflare 1.1.1.1 not passing the contents of this field on to the authoritative
EDNS_Client_Subnet
Cybersecurity company acquired by Cloudflare
cybersecurity company based in Redwood City, California which was acquired by Cloudflare in April 2022. Area 1 was incorporated in 2013 by Oren Falkowitz, Blake
Area_1_Security
2021 software security vulnerability
Security Team. Affected commercial services include Amazon Web Services, Cloudflare, iCloud, Minecraft: Java Edition, Steam, Tencent QQ and many others. According
Log4Shell
American artificial intelligence company
"Anthropic has acquired the dev tools startup used by OpenAI, Google, and Cloudflare". TechCrunch. Retrieved June 4, 2026. Metz, Rachel (May 8, 2026). "Anthropic
Anthropic
Spanish computer-security researcher and executive (born 1975)
Digital Officer between 2016 and 2025. In August 2025, Alonso joined Cloudflare as vice president and head of international development. Alonso is a frequent
Chema_Alonso
Application layer protocol
versions of the protocol. In 2019, support for HTTP/3 was first added to Cloudflare and Chrome and also enabled in Firefox. HTTP/3 has lower latency for real-world
HTTP
Overview of resource records permissible in zone files of the Domain Name System
2535." RFC 2845, abstract "What happened next: the deprecation of ANY". Cloudflare. 16 March 2019. Retrieved 19 September 2021. P. Mockapetris (November
List_of_DNS_record_types
Open-source fast-loading HTML framework/api
help webpages load faster. AMP content may be cached by a CDN, such as Cloudflare's AMP caches, which allows pages to be served more quickly. AMP was first
Accelerated_Mobile_Pages
Web server based on nginx and LuaJIT
originally sponsored by Taobao before 2011 and was mainly supported by Cloudflare from 2012 to 2016. Since 2017, it has been mainly supported by OpenResty
OpenResty
Topics referred to by the same term
Tenet, a device that inverts entropy Turnstile, a CAPTCHA product by Cloudflare Turn Style, retail store Turnstyle (band), a band from Perth, Western
Turnstile_(disambiguation)
Connection between computers or programs
But What's In It For Partner Apps?". AdExchanger. "Cloudflare API v4 Documentation". cloudflare. 25 February 2020. Retrieved 27 February 2020. Liew,
API
Indonesian police officer
hosted by Cloudflare, such as ChatGPT, for their daily lives. On 25 November 2025, the directorate general met with Cloudflare to discuss Cloudflare's compliance
Alexander_Sabar
Former online illegal movie streaming site network
numerous steps to hide the identity of the operator, including using Cloudflare, but there is strong reason to believe the operator is still in Vietnam;
123Movies
Russian messaging and e-commerce app
April 2026, Cloudflare labeled the domain Max.ru which is associated with the Max app as spyware. Max's press office stated that Cloudflare's classification
Max_(app)
System of public logs of digital certificates
Monitoring". Cloudflare Developers. 2024. Retrieved 2025-05-07. "Sectigo's monitor". crt.sh. Retrieved 28 April 2025. "Cloudflare's Monitor". Cloudflare. 2024
Certificate_Transparency
Agency of the United States Department of Homeland Security
2021, CISA removed the fee for registering domains. In January 2023, Cloudflare received a $7.2M contract to provide DNS registry and hosting services
Cybersecurity and Infrastructure Security Agency
Cybersecurity_and_Infrastructure_Security_Agency
Denial-of-service attack
Force. "Hyper-volumetric DDoS attacks skyrocket: Cloudflare's 2025 Q2 DDoS threat report". The Cloudflare Blog. 2025-07-15. Retrieved 2026-02-21. Kurose
SYN_flood
U.S. large-cap stock market index
Cleveland-Cliffs CLF Materials Steel Clorox CLX Consumer Staples Household Products Cloudflare NET Information Technology CME Group CME Financials Financial Exchanges
Russell_1000_Index
Open-source web browser
standalone project. The initiative is funded entirely through donations, with Cloudflare, FUTO, Shopify, and 37signals among its sponsors. Ladybird uses a new
Ladybird_(web_browser)
Raster graphics file format
Greg (15 September 2021). "Optimizing images on the web". The Cloudflare Blog. Cloudflare. Retrieved 3 December 2025. "Netflix AV1 Encodes Readme". Archived
AVIF
Open-source web server software
17.83% of the million busiest websites, with the other top four being Cloudflare at 22.99%, Nginx at 20.11%, and Microsoft Internet Information Services
Apache_HTTP_Server
Content provided by a website
based on the results of a search or some other request. "Why use HTTPS?". Cloudflare. Retrieved 22 October 2025. "Content Security Policy (CSP) - HTTP". MDN
Web_page
Web browser made by Mozilla
This is the English Translation of Previous Citation. "Cloudflare Resolver for Firefox". cloudflare.com. Archived from the original on July 22, 2018. Retrieved
Firefox
Archived from the original on 2013-04-25. Retrieved 2013-08-06. "Cloudflare Network". "Cloudflare DNSSEC Protection". "DigitalOcean API reference". "Dyn API
List_of_managed_DNS_providers
Web browser developed by Google
Google Chrome had 71% worldwide global usage share, and, according to Cloudflare, it was 68%, making it the most widely used web browser.[citation needed]
Google_Chrome
Security analysis team employed by Google
hardware community. On 19 February 2017, Google discovered a flaw within Cloudflare's reverse proxies, which caused their edge servers to run past the end
Project_Zero
Content delivery network
basis. CloudFront competes with larger CDNs, such as Akamai, Azion, and Cloudflare. Upon launch, Larry Dignan of ZDNet News stated that CloudFront could
Amazon_CloudFront
Mail sent using electronic means
Retrieved May 27, 2024. "When are email attachments safe to open?". Cloudflare. Retrieved May 27, 2024. Griffiths, James (May 2, 2020). "How a badly-coded
American cybersecurity professional (born 1968)
States Department of Justice, he worked as a CSO at Facebook, Uber and Cloudflare. Sullivan became known as the first corporate security executive criminally
Joe_Sullivan_(cybersecurity)
Open-source, automated tool for measuring the quality of web pages
Retrieved 2023-08-29. "INP. Get ready for the new Core Web Vital". The Cloudflare Blog. 2023-06-20. Retrieved 2023-08-29. Google. "Interaction to Next Paint
Lighthouse_(software)
The address is only for whistleblowing via Securedrop. 1.1.1.1 – DNS by Cloudflare Mullvad – VPN provider based in Sweden Cryptostorm – VPN provider based
List_of_Tor_onion_services
Internet outages in Bangladesh during 2024
protests". Al Jazeera. 28 July 2024. Retrieved 20 October 2024. Cloudflare Radar [@CloudflareRadar] (19 July 2024). "Bangladesh is experiencing a near complete
2024 Bangladesh internet blackouts
2024_Bangladesh_internet_blackouts
Linux software project developed by Google
Notable adopters include DigitalOcean for its App Platform, Cloudflare for Cloudflare Pages builds, and AI companies like OpenAI and Anthropic to safely
GVisor
Software for defining and provisioning datacenter infrastructure
number of cloud infrastructure providers such as Amazon Web Services, Cloudflare, Microsoft Azure, IBM Cloud, Serverspace, Selectel Google Cloud Platform
Terraform_(software)
Open-source software library developed by Yandex
the open-source community. JetBrains uses CatBoost for code completion Cloudflare uses CatBoost for bot detection Careem uses CatBoost to predict future
CatBoost
Data format and compression library
improvements to this library: Intel has a high-performance fork of zlib. Cloudflare maintains a high-performance fork with "massive" improvements. zlib-ng
Zlib
IETF network protocol
RFC 9458, published in January 2024 by authors affiliated with Mozilla and Cloudflare. The RFC says "Oblivious HTTP is simpler and less costly than more robust
Oblivious_HTTP
Documentation generator
GitLab. Retrieved 2023-12-10. "Deploy an MkDocs site · Cloudflare Pages docs". developers.cloudflare.com. 2023-08-07. Retrieved 2023-12-10. "Atlassian DC
MkDocs
CAPTCHA implementation owned by Google
it allows Google to track users on non-Google websites. In April 2020, Cloudflare switched from reCAPTCHA to hCaptcha, citing privacy concerns over Google's
ReCAPTCHA
ending with .online are blocked. On 19 February, Iranians began blocking Cloudflare with a massive share of 70% Iranian traffic cut off from the Internet
Internet_censorship_in_Iran
Browser extension
emulation. Its primary task is to block connections to major CDNs such as Cloudflare and Google (for privacy and anti-tracking purposes) and serve popular
Decentraleyes
Spanish national association football organization
ranges belonging to Cloudflare for illegally broadcasting soccer matches. Legal IP blocks affected numerous customers using Cloudflare's security and content
Liga Nacional de Fútbol Profesional
Liga_Nacional_de_Fútbol_Profesional
Technique for Internet censorship circumvention
stored in the same cloud. It has much the same effect. As of August 2020, Cloudflare started refusing requests sent with both plaintext and encrypted destinations
Domain_fronting
Hacker group
Darkode hacking forums and shared hosting with them. On April 30, 2016, Cloudflare published a blog post detailing how cyber criminals using this group's
Lizard_Squad
Minecraft minigame server
be shut down on June 30, 2020. Around April 2018, Hypixel began to use Cloudflare Spectrum for DDoS mitigation after being the victim of multiple attacks
Hypixel
System to identify resources on a network
unencrypted DNS, before DoH was standardized and widely deployed. Apple and Cloudflare subsequently deployed the technology in the context of DoH, as Oblivious
Domain_Name_System
American venture capital firm
Zynga, Tumblr, Stack Overflow, Meetup, Kickstarter, MongoDB, Flurry, Cloudflare, Duolingo, and Carta. Union Square Ventures (USV) was founded in 2003
Union_Square_Ventures
Information technology slogan
1980s. In 2019, the content delivery network and DDoS mitigation company Cloudflare took the rights of the slogan by registering it. "The Network is the Computer"
The_Network_is_the_Computer
Website providing torrent files and magnet links
(Moldo-German company) servers. The Pirate Bay then began using the services of CloudFlare, a company which offers reverse proxy services. On 1 January 2015, the
The_Pirate_Bay
Chess tournament
team members experienced connectivity issues due to a global outage of Cloudflare servers; Russia and India were subsequently declared joint winners. The
FIDE Online Chess Olympiad 2020
FIDE_Online_Chess_Olympiad_2020
American computer programmer and neuroscientist
Quest Venture Partners. In Mar 2017, the team announced they had joined Cloudflare. Wang joined as Head of Developer Relations. Finley, Klint (28 July 2014)
Jade_Wang
Anonymous imageboard website
JavaScript worms. By November 2011, 4chan made the transition to utilizing Cloudflare following a series of DDoS attacks. The 4chan imageboards were rewritten
4chan
Network protocol used by the Web
quite yet". CloudFlare. Retrieved December 5, 2015. Krasnov, Vlad (April 28, 2016). "Announcing Support for HTTP/2 Server Push". CloudFlare. Retrieved
HTTP/2
Runtime system for operating systems
Security Module". blog.cloudflare.com. June 2022. Retrieved 16 August 2022. "Unimog - Cloudflare's edge load balancer". blog.cloudflare.com. September 2020
EBPF
Type of proxy server
back-end services themselves remain healthy. For example, a 2020 outage at Cloudflare briefly took down major sites and services that relied on its reverse-proxy
Reverse_proxy
January 2015. Retrieved 15 June 2014. "Limits". Cloudflare. Retrieved 29 September 2025.. "Pricing". Cloudflare. Retrieved 29 September 2025.. "Data migration"
Comparison of file hosting services
Comparison_of_file_hosting_services
filmmaker obtained a DMCA subpoena at a California federal court targeting Cloudflare in an attempt to uncover the identities of people connected to several
BroadcasTheNet
Network protocol
to saturate links, causing the denial of services. The network company Cloudflare has described this attack as the "Stupidly Simple DDoS Protocol". Firefox
Simple Service Discovery Protocol
Simple_Service_Discovery_Protocol
American educational website
Headquarters New York City, United States Board of directors Stephanie Cohen (Cloudflare), Heejae Lim (TalkingPoints), Peter Norvig (Stanford), Matthew Rodriguez
Quill.org
Network level ad- and tracker-blocking app
over HTTPS for devices using it as a DNS server with the cloudflared binary provided by Cloudflare. Pi-hole can handle all DNS requests for the local network
Pi-hole
Type of cryptographic certificate
handshake. It is currently an IETF Internet Draft, and has been in use by Cloudflare and Facebook, with browser support by Firefox. Modern websites and other
Delegated_credential
High performance packet data path in the OS kernel
Community Resources L4Drop: XDP DDoS Mitigations, Cloudflare Unimog: Cloudflare's edge load balancer, Cloudflare Open-sourcing Katran, a scalable network load
Express_Data_Path
Russian Internet infrastructure company
denial-of-service attack protection to online forum Kiwi Farms after Cloudflare cancelled services to the site on 3 September 2022. On 5 September 2022
DDoS-Guard
Defunct social networking site for sex workers
server. After 3 weeks of operation, it was publicly unavailable following Cloudflare withdrawing their services to Switter on 18 April 2018, after the passage
Switter
Conventions for capitalizing the word
Internet Engineering Task Force, Ars Technica, the Internet Society, and Cloudflare. Organizations and style guides that use lowercase internet include Apple
Capitalization_of_Internet
CLOUDFLARE
CLOUDFLARE
CLOUDFLARE
CLOUDFLARE
Boy/Male
Anglo, British, English
Place Name; Brook of the Deer; From the Deer Brook
Male
Portuguese
Short form of Catalan/Portuguese Joaquim, QUIM means "Jehovah raises up."
Boy/Male
Indian, Punjabi, Sikh
God's Saint; In the Memories of All Gurus
Boy/Male
Buddhist, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Punjabi, Sanskrit, Sikh, Sindhi, Telugu
Blue Lotus
Girl/Female
Australian, Celtic
Fair
Biblical
glorious; honorable
Female
Irish
Variant spelling of Irish Gaelic ÉibhlÃn, EILÃN means "beauty, radiance."
Girl/Female
Tamil
Ananda | ஆநஂதா, ஆநஂதÂ
Joy, Happiness
Girl/Female
Tamil
Sampreethi | ஸமà¯à®ªà¯à®°à¯€à®¤à¯€
Real Love and attachment, Attachment, Joyful
Male
English
 Variant spelling of English Perry, PARRY means "wanderer." Welsh surname transferred to forename use, from an Anglicized form of ap Harry, meaning "son of Harry."
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