WordPress 5.1.21
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
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WordPress 5.1.21 companies in the United States
Every WordPress 5.1.21 website we detected in the US.
Companies with personnel emails
Only sites where a personal, company-hosted email was found.
Decision makers on LinkedIn
Sites with at least one personnel LinkedIn profile.
Top 100,000 WordPress 5.1.21 sites by traffic
Start with the highest-traffic end of the dataset.
Sites on a .com domain
Limit results to WordPress 5.1.21 websites on .com domains.
Companies with phone numbers
Only sites where an organisation phone number was found.
Complementary Technologies
WordPress 5.1.21 Complementary Technologies
Technologies frequently found with WordPress 5.1.21.
Most Frequent Complementary Tech
MySQL
1,229
PHP
1,229
jQuery
1,170
jQuery Migrate
1,095
Apache HTTP Server
633
Contact Form 7
459
Bootstrap
320
Yoast SEO
311
Nginx
309
Slider Revolution
196
Live Websites
Websites Using WordPress 5.1.21
Live sites we caught running WordPress 5.1.21 in the wild, straight from the latest crawl.
| Domain | Server Location | ASN | Crawl Date |
|---|---|---|---|
| rostovnews.net | 🇷🇺 Russia | SpaceWeb Ltd | July 27, 2026 |
| ddnetwork.co.th | 🇹🇭 Thailand | National Telecom Public Company Limited | July 26, 2026 |
| lepaystchad.com | 🇫🇷 France | OVH SAS | July 24, 2026 |
| orbitel.ru | 🇷🇺 Russia | Orbitel LLC | July 20, 2026 |
| nickalexanderproductions.com | 🇺🇸 United States | Liquid Web, L.L.C | June 18, 2026 |
| josianegoulet.fr | 🇫🇷 France | OVH SAS | June 18, 2026 |
| crkva-kassel.de | 🇩🇪 Germany | EVANZO e-commerce GmbH | June 18, 2026 |
| kellyjimi.com | 🇫🇷 France | OVH SAS | June 18, 2026 |
| bpsz.hu | 🇭🇺 Hungary | Servergarden Kft. | June 18, 2026 |
| kyriakis.gr | Unknown | Cloudflare, Inc. | June 18, 2026 |
Identifiers
Top WordPress 5.1.21 Identifiers
Who is using WordPress 5.1.21 and where: top five by detected sites.
Technology
MySQL
1,229
PHP
1,229
jQuery
1,170
jQuery Migrate
1,095
Apache HTTP Server
633
Language
French
268
English
246
German
173
Russian
60
Spanish
53
ASN
OVH SAS
298
IONOS SE
160
Neue Medien Muennich GmbH
54
Cloudflare, Inc.
46
Hetzner Online GmbH
42
TLD
com
403
de
150
fr
140
pl
49
ru
48
Country
France
303
Germany
245
United States
87
Russia
60
Unknown
50
Deep Dive
Most Frequent WordPress 5.1.21 Identifiers and Complementary Tech
Most frequently encountered identifiers for WordPress 5.1.21 and its complementary technologies.
| Technology | Sites |
|---|---|
MySQL | 1,229 |
PHP | 1,229 |
jQuery | 1,170 |
|
jQuery Migrate | 1,095 |
Apache HTTP Server | 633 |
Contact Form 7 | 459 |
Bootstrap | 320 |
Yoast SEO | 311 |
Nginx | 309 |
Slider Revolution | 196 |
Modernizr | 166 |
| imagesLoaded | 152 |
Lightbox | 138 |
wpBakery | 122 |
Google Analytics | 115 |
FitVids.JS | 114 |
Magnific Popup | 108 |
Google Maps | 100 |
reCAPTCHA | 97 |
OWL Carousel | 94 |
YouTube | 92 |
All in One SEO | 90 |
Cloudflare | 85 |
|
WordPress Block Editor | 82 |
prettyPhoto | 80 |
| Language | Sites |
|---|---|
| French | 268 |
| English | 246 |
| German | 173 |
| Russian | 60 |
| Spanish | 53 |
| Polish | 51 |
| Japanese | 34 |
| Dutch | 34 |
| Italian | 30 |
| Czech | 28 |
| Latin | 27 |
| Hungarian | 15 |
| Portuguese | 12 |
| Tagalog | 12 |
| Catalan | 10 |
| Danish | 10 |
| Slovak | 10 |
| Norwegian Nynorsk | 9 |
| Norwegian Bokmål | 8 |
| Turkish | 8 |
| Thai | 7 |
| Chinese | 7 |
| Esperanto | 6 |
| Lithuanian | 6 |
| Romanian | 6 |
| Swedish | 6 |
| Afrikaans | 5 |
| Estonian | 5 |
| Finnish | 5 |
| Croatian | 5 |
| Indonesian | 5 |
| Korean | 5 |
| Ukrainian | 5 |
| Basque | 4 |
| Greek | 3 |
| Persian | 3 |
| Slovenian | 3 |
| Albanian | 3 |
| Ganda | 2 |
| Tsonga | 2 |
| Vietnamese | 2 |
| Arabic | 1 |
| Azerbaijani | 1 |
| Bosnian | 1 |
| Bulgarian | 1 |
| Welsh | 1 |
| Icelandic | 1 |
| Kazakh | 1 |
| Latvian | 1 |
| Malay | 1 |
| Shona | 1 |
| Southern Sotho | 1 |
| Serbian | 1 |
| Tswana | 1 |
| Yoruba | 1 |
| Zulu | 1 |
| ASN | Sites |
|---|---|
| OVH SAS | 298 |
| IONOS SE | 160 |
| Neue Medien Muennich GmbH | 54 |
| Cloudflare, Inc. | 46 |
| Hetzner Online GmbH | 42 |
| Combell NV | 34 |
| dogado GmbH | 32 |
| DigitalOcean, LLC | 28 |
| Infomaniak Network SA | 23 |
| Beget LLC | 21 |
| SAKURA Internet Inc. | 19 |
| Amazon.com, Inc. | 15 |
| Ntirety, Inc. | 15 |
| Cyber_Folks S.A. | 14 |
| DinaHosting S.L. | 14 |
| Jsc timeweb | 14 |
| webgo GmbH | 12 |
| Scaleway SAS | 10 |
| Webglobe, s.r.o. | 10 |
| EVANZO e-commerce GmbH | 9 |
| Liquid Web, L.L.C | 8 |
| Nazwa.pl Sp.z.o.o. | 8 |
| One.com A/S | 8 |
| WebSupport s.r.o. | 8 |
| Internet Invest, Ltd. | 7 |
| Akamai Connected Cloud | 6 |
| Aruba S.p.A. | 6 |
| Celeste SAS | 6 |
| GANDI SAS | 6 |
| LLC masterhost | 6 |
| New Dream Network, LLC | 6 |
| Zetta Hosting Solutions LLC. | 6 |
| IQ PL Sp. z o.o. | 5 |
| JSC IOT | 5 |
| Host Europe GmbH | 4 |
| Hostopia Australia Web Pty Ltd | 4 |
| Hurricane Electric LLC | 4 |
| Korea Telecom | 4 |
| MasterDC s.r.o. | 4 |
| Rackforest Zrt. | 4 |
| Rackhost Zrt. | 4 |
| The Constant Company, LLC | 4 |
| netcup GmbH | 4 |
| ARTERIA Networks Corporation | 3 |
| CS LOXINFO Public Company Limited. | 3 |
| Contabo GmbH | 3 |
| LH.pl Sp. z o.o. | 3 |
| Loopia AB | 3 |
| P.a.g.m. Ou | 3 |
| SH.cz s.r.o. | 3 |
| SURF B.V. | 3 |
| Sentia Denmark A/S | 3 |
| Signet B.V. | 3 |
| Totaalnet Internet Works B.V. | 3 |
| VNET a.s. | 3 |
| Xserver Inc. | 3 |
| genesys informatica srl | 3 |
| united-domains GmbH | 3 |
| AKA Bilisim Yazilim Arge Ins. Taah. San. Tic. A.S. | 2 |
| ATW Internet Kft. | 2 |
| Beyond.pl sp. z o.o. | 2 |
| CASABLANCA INT a.s. | 2 |
| GMO Internet Group, Inc. | 2 |
| Groupe LWS SARL | 2 |
| Hangzhou Alibaba Advertising Co.,Ltd. | 2 |
| Hosting.de GmbH | 2 |
| ICDSoft Ltd. | 2 |
| JSC Selectel | 2 |
| Keyweb AG | 2 |
| LeaseWeb Netherlands B.V. | 2 |
| Leaseweb Canada Inc. | 2 |
| Level 27 BVBA | 2 |
| MSTN CJSC | 2 |
| Mittwald CM Service GmbH & Co. KG | 2 |
| NSS S.A. | 2 |
| Nessus GmbH | 2 |
| Octopuce s.a.r.l. | 2 |
| Seonet Multimedia s.r.o. | 2 |
| Tecnocratica Centro de Datos, S.L. | 2 |
| Tele2 SWIPnet | 2 |
| Telia Eesti AS | 2 |
| Thg Hosting Limited | 2 |
| Web Site Source | 2 |
| Web4U s.r.o. | 2 |
| Wojciech Lorek Endor Computers | 2 |
| Your Hosting B.V. | 2 |
| 1&1 Versatel GmbH | 1 |
| 23M GmbH | 1 |
| 3W Infra B.V. | 1 |
| 5G NETWORK OPERATIONS PTY LTD | 1 |
| A1 Bulgaria EAD | 1 |
| ACTIVE 24, s.r.o. | 1 |
| APX Integration SASU | 1 |
| AZNET s.a.r.l. | 1 |
| Alibaba US Technology Co., Ltd. | 1 |
| Alsatis Services SAS | 1 |
| Aria Shatel PJSC | 1 |
| Artfiles New Media GmbH | 1 |
| Artnet Sp. z o.o. | 1 |
| BSE Software GmbH | 1 |
| Blacknight Internet Solutions Limited | 1 |
| CDLAN SpA | 1 |
| CL9 Tecnologias Ltda. | 1 |
| CRATIS d.o.o. | 1 |
| Cloudi Nextgen Sl | 1 |
| Cogent Communications, LLC | 1 |
| CommuniLink Internet Limited. | 1 |
| DEFT.COM | 1 |
| DIAMATRIX | 1 |
| DIGI Tavkozlesi es Szolgaltato Kft. | 1 |
| DXTL Tseung Kwan O Service | 1 |
| DataHata Ltd | 1 |
| Datacamp Limited | 1 |
| Deutsche Telekom AG | 1 |
| Dgn Teknoloji A.s. | 1 |
| ELSERVER S.R.L | 1 |
| Elkdata OU | 1 |
| Elsynet S.r.l. | 1 |
| Epcan GmbH | 1 |
| Equinix (EMEA) Acquisition Enterprises B.V. | 1 |
| Etheron Hosting | 1 |
| F-Solutions Oy | 1 |
| FPT Telecom Company | 1 |
| Fontventa Sl | 1 |
| Fornex Hosting S.L. | 1 |
| GMO GlobalSign Holdings K.K. | 1 |
| GMO-Z com NetDesign Holdings Co., Ltd. | 1 |
| GRUPO PANAGLOBAL 15 S.A | 1 |
| Glesys AB | 1 |
| Google LLC | 1 |
| Gransy s.r.o. | 1 |
| Host Universal Pty Ltd | 1 |
| HostPapa | 1 |
| Hoster kg, Ltd. | 1 |
| Hosting Ukraine LTD | 1 |
| Hostinger International Limited | 1 |
| Hostnet B.V. | 1 |
| IDC Frontier Inc. | 1 |
| INTEGRITY Informatics Ltd. | 1 |
| Institute of Mathematics and Computer Science of University of Latvia | 1 |
| InterNetX GmbH | 1 |
| Internet Initiative Japan Inc. | 1 |
| Interstroom Informatietechnologie BV | 1 |
| Ip Server LLC | 1 |
| JSC ER-Telecom Holding | 1 |
| JSC RTComm.RU | 1 |
| KAGOYA JAPAN Inc. | 1 |
| KDDI Web Communications Inc. | 1 |
| Kylos sp. z o.o. | 1 |
| LG DACOM Corporation | 1 |
| Locaweb Servicos de Internet SA | 1 |
| MTF Solutions AG | 1 |
| Magyar Telekom Plc. | 1 |
| Microsoft Corporation | 1 |
| Miedzynarodowe Targi Poznanskie Sp. z o.o. | 1 |
| Minh Tu Telecom Limited Company | 1 |
| NTS workspace AG | 1 |
| NTT PC Communications, Inc. | 1 |
| National Telecom Public Company Limited | 1 |
| NetCom BW GmbH | 1 |
| NetFox Ltd. | 1 |
| Netia SA | 1 |
| Network Solutions, LLC | 1 |
| Netzware Handels- und IT-Dienstleistungs GmbH | 1 |
| Next Level Business Srl | 1 |
| Nexthop AS | 1 |
| Noyan Abr Arvan Co. ( Private Joint Stock) | 1 |
| O2 Czech Republic, a.s. | 1 |
| Online Solutions Oy | 1 |
| Orange | 1 |
| Orbitel LLC | 1 |
| Otsuka Corp. | 1 |
| PE Konstantin Vladimirovich Kravchenko | 1 |
| POPIDC powered by CSLoxinfo | 1 |
| PRO-ZETA a.s. | 1 |
| Play | 1 |
| RIMU HOSTING LIMITED | 1 |
| Rackspace Hosting | 1 |
| Relink LTD | 1 |
| RendszerNET Kft. | 1 |
| RouteLabel V.O.F. | 1 |
| SC Lithuanian Radio and TV Center | 1 |
| Servergarden Kft. | 1 |
| Serverius Holding B.V. | 1 |
| Smart Weblications GmbH | 1 |
| Soluciones Corporativas IP, SL | 1 |
| SpaceWeb Ltd | 1 |
| Sprintel s.r.o. | 1 |
| Strato GmbH | 1 |
| Sucuri | 1 |
| T-Mobile Austria GmbH | 1 |
| Team Blue Carrier Limited | 1 |
| Tech Futures Interactive Inc. | 1 |
| Televideocom Srl | 1 |
| Telium Telecomunicacoes Ltda | 1 |
| Templus Barcelona S.l. | 1 |
| Tiger Technologies LLC | 1 |
| Tilaa B.V. | 1 |
| Today Concepts B.V. | 1 |
| UAB Interneto vizija | 1 |
| UAB Kauno interneto sistemos | 1 |
| Unix Storm - Michal Gottlieb | 1 |
| UpCloud Ltd | 1 |
| VISTEC Internet Service GmbH | 1 |
| Videotron Ltee | 1 |
| Virgin Media | 1 |
| Virtua Systems SAS | 1 |
| Vodafone Czech Republic a.s. | 1 |
| Webteam Telekomunikacja Sp. Z O. O. Spolka Komandytowa | 1 |
| comtrance service GmbH | 1 |
| i3D.net B.V | 1 |
| ispOne business GmbH | 1 |
| oja.at GmbH | 1 |
| senseLAN GmbH | 1 |
| sprint S.A. | 1 |
| tal.de GmbH | 1 |
| web-crossing GmbH | 1 |
| TLD | Sites |
|---|---|
| com | 403 |
| de | 150 |
| fr | 140 |
| pl | 49 |
| ru | 48 |
| org | 37 |
| net | 33 |
| nl | 27 |
| be | 26 |
| es | 26 |
| cz | 25 |
| it | 24 |
| uk | 21 |
| ch | 19 |
| eu | 18 |
| jp | 18 |
| hu | 17 |
| at | 13 |
| no | 9 |
| ua | 9 |
| ca | 8 |
| info | 8 |
| sk | 7 |
| fi | 6 |
| xn--p1ai | 5 |
| au | 4 |
| br | 4 |
| ee | 4 |
| se | 4 |
| co | 3 |
| dk | 3 |
| gr | 3 |
| lt | 3 |
| ro | 3 |
| th | 3 |
| uz | 3 |
| za | 3 |
| bz | 2 |
| cn | 2 |
| hr | 2 |
| io | 2 |
| kg | 2 |
| kr | 2 |
| me | 2 |
| pt | 2 |
| tr | 2 |
| vn | 2 |
| ar | 1 |
| biz | 1 |
| by | 1 |
| cat | 1 |
| cc | 1 |
| do | 1 |
| expert | 1 |
| holdings | 1 |
| ie | 1 |
| in | 1 |
| ir | 1 |
| is | 1 |
| li | 1 |
| live | 1 |
| lu | 1 |
| lv | 1 |
| nz | 1 |
| rs | 1 |
| sg | 1 |
| su | 1 |
| sv | 1 |
| top | 1 |
| tv | 1 |
| Country | Sites |
|---|---|
| 🇫🇷 France | 303 |
| 🇩🇪 Germany | 245 |
| 🇺🇸 United States | 87 |
| 🇷🇺 Russia | 60 |
| Unknown | 50 |
| 🇪🇸 Spain | 44 |
| 🇵🇱 Poland | 44 |
| 🇯🇵 Japan | 36 |
| 🇳🇱 Netherlands | 36 |
| 🇧🇪 Belgium | 31 |
| 🇮🇹 Italy | 30 |
| 🇨🇭 Switzerland | 28 |
| 🇨🇿 Czech Republic | 27 |
| 🇬🇧 United Kingdom | 24 |
| 🇭🇺 Hungary | 17 |
| 🇦🇹 Austria | 15 |
| 🇨🇦 Canada | 15 |
| 🇺🇦 Ukraine | 13 |
| 🇫🇮 Finland | 9 |
| 🇳🇴 Norway | 9 |
| 🇸🇰 Slovakia | 9 |
| 🇦🇺 Australia | 7 |
| 🇧🇬 Bulgaria | 7 |
| 🇹🇭 Thailand | 7 |
| 🇧🇷 Brazil | 5 |
| 🇩🇰 Denmark | 5 |
| 🇰🇷 South Korea | 5 |
| 🇸🇪 Sweden | 5 |
| 🇸🇬 Singapore | 5 |
| 🇪🇪 Estonia | 4 |
| 🇮🇪 Ireland | 4 |
| 🇹🇷 Turkey | 4 |
| 🇨🇴 Colombia | 3 |
| 🇱🇹 Lithuania | 3 |
| 🇻🇳 Vietnam | 3 |
| 🇦🇷 Argentina | 2 |
| 🇨🇳 China | 2 |
| 🇭🇰 Hong Kong | 2 |
| 🇭🇷 Croatia | 2 |
| 🇮🇳 India | 2 |
| 🇮🇴 British Indian Ocean Territory | 2 |
| 🇮🇷 Iran | 2 |
| 🇲🇪 Montenegro | 2 |
| 🇵🇹 Portugal | 2 |
| 🇿🇦 South Africa | 2 |
| 🇧🇾 Belarus | 1 |
| 🇮🇩 Indonesia | 1 |
| 🇰🇬 Kyrgyzstan | 1 |
| 🇱🇻 Latvia | 1 |
| 🇳🇿 New Zealand | 1 |
| 🇵🇦 Panama | 1 |
| 🇷🇴 Romania | 1 |
| 🇸🇻 El Salvador | 1 |
| 🇹🇻 Tuvalu | 1 |
| 🇺🇿 Uzbekistan | 1 |