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241 live sites using Really Simple CAPTCHA right now

Security · by Takayuki Miyoshi · since 2009 · open source

241 sites Dataset updated · 2026-08-17
Categories WordPress plugins
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About Really Simple CAPTCHA

webatla tracks 241 live websites using Really Simple CAPTCHA, 0.0% of every site we index. Download the full list of websites that use Really Simple CAPTCHA as a daily JSONL export. Every record includes the domain plus DNS, WHOIS, IP address, hosting country and global rank.

Really Simple CAPTCHA is a lightweight PHP CAPTCHA plugin for WordPress, developed by Takayuki Miyoshi. It is most commonly used as an add-on to the Contact Form 7 plugin to add basic bot-prevention to contact forms. The plugin generates simple image-based CAPTCHAs with alphanumeric characters that users must solve before submitting a form.

Being minimal in design and easy to install, Really Simple CAPTCHA became widely adopted in the WordPress ecosystem. However, it has been noted that the CAPTCHAs it generates are relatively easy for bots to bypass, and modern alternatives like reCAPTCHA or hCaptcha offer stronger protection. The plugin is no longer actively developed but remains installed on millions of WordPress sites.

At a glance

VendorTakayuki Miyoshi
LanguagePHP
LicenseGPL v2
First release2009-01-01
All figures as of Aug 17, 2026
241 Sites detected
0.0% Of all websites

Database preview of Really Simple CAPTCHA sites

Really Simple CAPTCHA detection is a value inside the Technologies column. Two datasets carry it, switch between them to compare what's included.

webatla-technologies-really-simple-captcha-2026-08-17.jsonl.zst · 241 rows · 14 columns Daily fresh export
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesPR valueHarmonic valueDomain creation dateDomain expiration date
sikes-elec.comcomcomICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=Hello%2C+I+would+like+to+ask+about+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-05PHP 8.3.31, MySQL, HTTP/2, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat0.000000010226912,318,9332013-08-052027-08-05
sikes-elec.rururuICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%D0%97%D0%B4%D1%80%D0%B0%D0%B2%D1%81%D1%82%D0%B2%D1%83%D0%B9%D1%82%D0%B5%2C+%D1%8F+%D1%85%D0%BE%D1%82%D0%B5%D0%BB%28%D0%B0%29+%D0%B1%D1%8B+%D0%B7%D0%B0%D0%B4%D0%B0%D1%82%D1%8C+%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81+%D0%BE+%C2%ABShenzhen+Sikes+Electric+Co.%2C+Ltd%C2%BB."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, GoDaddy, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat0.0000000082731110,283,3462017-06-122027-06-12
sikes.krkrkrICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%EC%95%88%EB%85%95%ED%95%98%EC%84%B8%EC%9A%94%2C+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22+%EC%A0%9C%ED%92%88%EC%97%90+%EB%8C%80%ED%95%B4+%EB%AC%B8%EC%9D%98%ED%95%98%EA%B3%A0+%EC%8B%B6%EC%8A%B5%EB%8B%88%EB%8B%A4."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, GoDaddy, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification0.0000000078967710,283,3452024-07-292027-07-29
sikes.ptptptICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=Ol%C3%A1%2C+gostaria+de+perguntar+sobre+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, Hostinger, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification0.0000000078967710,283,3452026-04-092027-04-09
sikes.jpjpjpICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF%E3%80%81%E3%80%8CShenzhen+Sikes+Electric+Co.%2C+Ltd%E3%80%8D%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E7%9B%B8%E8%AB%87%E3%81%97%E3%81%9F%E3%81%84%E3%81%AE%E3%81%A7%E3%81%99%E3%81%8C%E3%80%82"],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, Hostinger, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification0.0000000078892810,283,3452026-04-022027-04-30
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesDNS last data checkedDNS StatusDNS recordsPR valueHarmonic valueRDAP/WHOIS last data checkedRDAP/WHOIS methodDomain creation dateDomain expiration dateDomain last changedRegistrarRDAP/WHOIS RecordResponse Status RDAP/WHOIS
sikes-elec.comcomcomICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=Hello%2C+I+would+like+to+ask+about+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-05PHP 8.3.31, MySQL, HTTP/2, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat2026-08-12TRUE{"A":["148.72.53.56"],"MX":[{"host":"qiye163mx01.mxmail.netease.com","priority":5},{"host":"qiye163mx02.mxmail.netease.com","priority":10}],"NS":["ns3.gzidc.com","ns3.ns365.net","ns4.gzidc.com","ns4.ns365.net"],"SOA":{"mname":"main1.ns365.net","retry":14400,"rname":"root.main1.ns365.net","expire":604800,"serial":2014092076,"minimum":86400,"refresh":10800},"TXT":["v=DMARC1","v=spf1 include:spf.163.com -all"]}0.000000010226912,318,9332025-07-08RDAP2013-08-052027-08-052025-07-08Guangdong JinWanBang Technology Investment Co., Ltd.{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/SIKES-ELEC.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/SIKES-ELEC.COM"},{"rel":"related","href":"https://rdap.gzidc.com/server/domain/SIKES-ELEC.COM","type":"application/rdap+json","value":"https://rdap.gzidc.com/server/domain/SIKES-ELEC.COM"}],"events":[{"eventDate":"2013-08-05T01:35:17Z","eventAction":"registration"},{"eventDate":"2027-08-05T01:35:17Z","eventAction":"expiration"},{"eventDate":"2023-03-01T09:28:10Z","eventAction":"last changed"},{"eventDate":"2025-07-08T01:15:00Z","eventAction":"last update of RDAP database"}],"handle":"1819803677_DOMAIN_COM-VRSN","status":["active"],"ldhName":"SIKES-ELEC.COM","notices":[{"links":[{"rel":"terms-of-service","href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/sikes-elec.com"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"help","href":"https://icann.org/wicf","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/sikes-elec.com"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"links":[{"rel":"about","href":"http://www.gzidc.com","type":"text/html","value":"https://rdap.gzidc.com/server/"}],"roles":["registrar"],"handle":"1525","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+86.02066849000-2"],["email",{},"text","abuse@gzidc.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"1525"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Guangdong JinWanBang Technology Investment Co., Ltd."]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"NS3.GZIDC.COM","objectClassName":"nameserver"},{"ldhName":"NS3.NS365.NET","objectClassName":"nameserver"},{"ldhName":"NS4.GZIDC.COM","objectClassName":"nameserver"},{"ldhName":"NS4.NS365.NET","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}Domain is active
sikes-elec.rururuICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%D0%97%D0%B4%D1%80%D0%B0%D0%B2%D1%81%D1%82%D0%B2%D1%83%D0%B9%D1%82%D0%B5%2C+%D1%8F+%D1%85%D0%BE%D1%82%D0%B5%D0%BB%28%D0%B0%29+%D0%B1%D1%8B+%D0%B7%D0%B0%D0%B4%D0%B0%D1%82%D1%8C+%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81+%D0%BE+%C2%ABShenzhen+Sikes+Electric+Co.%2C+Ltd%C2%BB."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, GoDaddy, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat2026-08-09TRUE{"A":["148.72.53.56"],"NS":["ns23.domaincontrol.com","ns24.domaincontrol.com"],"SOA":{"mname":"ns23.domaincontrol.com","retry":7200,"rname":"dns.jomax.net","expire":604800,"serial":2026061400,"minimum":600,"refresh":28800}}0.0000000082731110,283,3462026-06-11WHOIS2017-06-122027-06-122026-06-11RU-CENTER-RU{"raw_response":"% TCI Whois Service. Terms of use:\n% https://tcinet.ru/documents/whois_ru_rf.pdf (in Russian)\n% https://tcinet.ru/documents/whois_su.pdf (in Russian)\n\ndomain: SIKES-ELEC.RU\nnserver: ns23.domaincontrol.com.\nnserver: ns24.domaincontrol.com.\nstate: REGISTERED, DELEGATED, UNVERIFIED\norg: Shenzhen Sikes Electric Co., Ltd\ntaxpayer-id: -\nregistrar: RU-CENTER-RU\nadmin-contact: https://www.nic.ru/whois\ncreated: 2017-06-12T06:38:33Z\npaid-till: 2027-06-12T06:38:33Z\nfree-date: 2027-07-13\nsource: TCI\n\nLast updated on 2026-06-11T00:33:01Z"}Domain is active
sikes.krkrkrICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%EC%95%88%EB%85%95%ED%95%98%EC%84%B8%EC%9A%94%2C+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22+%EC%A0%9C%ED%92%88%EC%97%90+%EB%8C%80%ED%95%B4+%EB%AC%B8%EC%9D%98%ED%95%98%EA%B3%A0+%EC%8B%B6%EC%8A%B5%EB%8B%88%EB%8B%A4."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, GoDaddy, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification2026-08-08TRUE{"A":["148.72.53.56"],"NS":["ns53.domaincontrol.com","ns54.domaincontrol.com"],"SOA":{"mname":"ns53.domaincontrol.com","retry":7200,"rname":"dns.jomax.net","expire":604800,"serial":2026061400,"minimum":600,"refresh":28800},"TXT":["google-site-verification=-wohso4x3s5G4kfjfW50A9uubUEtApXzGuq74hCofhM"]}0.0000000078967710,283,3452025-08-07WHOIS2024-07-292027-07-292024-07-29Inames Co., Ltd.(http://www.inames.co.kr){"raw_response":"query : sikes.kr\n\n\n# KOREAN(UTF8)\n\n도메인이름 : sikes.kr\n등록인 : Eric Chen\n등록인 주소 : 경기도 성남시 분당구 성남대로925번길 37 한승베네피아 2층\n등록인 우편번호 : 13496\n책임자 : Eric Chen\n책임자 전자우편 : sikes@sikes-elec.com\n책임자 전화번호 : 1588-5829\n등록일 : 2024. 07. 29.\n최근 정보 변경일 : 2024. 07. 29.\n사용 종료일 : 2027. 07. 29.\n정보공개여부 : Y\n등록대행자 : (주)아이네임즈(http://www.inames.co.kr)\nDNSSEC : 미서명\n등록정보 보호 : clientDeleteProhibited\n등록정보 보호 : clientTransferProhibited\n등록정보 보호 : clientUpdateProhibited\n\n1차 네임서버 정보\n 호스트이름 : ns45.domaincontrol.com\n\n2차 네임서버 정보\n 호스트이름 : ns46.domaincontrol.com\n\n네임서버 이름이 .kr이 아닌 경우는 IP주소가 보이지 않습니다.\n\n\n# ENGLISH\n\nDomain Name : sikes.kr\nRegistrant : Eric Chen\nRegistrant Address : 2F, 37, Seongnam-daero 925beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Seoul, KR\nRegistrant Zip Code : 13496\nAdministrative Contact(AC) : Eric Chen\nAC E-Mail : sikes@sikes-elec.com\nAC Phone Number : 1588-5829\nRegistered Date : 2024. 07. 29.\nLast Updated Date : 2024. 07. 29.\nExpiration Date : 2027. 07. 29.\nPublishes : Y\nAuthorized Agency : Inames Co., Ltd.(http://www.inames.co.kr)\nDNSSEC : unsigned\nDomain Status : clientDeleteProhibited\nDomain Status : clientTransferProhibited\nDomain Status : clientUpdateProhibited\n\nPrimary Name Server\n Host Name : ns45.domaincontrol.com\n\nSecondary Name Server\n Host Name : ns46.domaincontrol.com\n\n\n- KISA/KRNIC WHOIS Service -\n\n"}Domain is active
sikes.ptptptICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=Ol%C3%A1%2C+gostaria+de+perguntar+sobre+%22Shenzhen+Sikes+Electric+Co.%2C+Ltd%22."],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, Hostinger, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification2026-08-11TRUE{"A":["148.72.53.56"],"NS":["artemis.dns-parking.com","hermes.dns-parking.com"],"SOA":{"mname":"hermes.dns-parking.com","retry":2400,"rname":"dns.hostinger.com","expire":604800,"serial":2026080601,"minimum":600,"refresh":10000},"TXT":["google-site-verification=IpwYMTyQd4MruM9QKlxOynO5VjfI8knC9yPQoyrjhbQ"]}0.0000000078967710,283,3452026-05-05WHOIS2026-04-092027-04-09{"raw_response":"Domain: sikes.pt\nDomain Status: Registered\nCreation Date: 09/04/2026 04:37:15\nExpiration Date: 09/04/2027 04:37:15\nOwner Name: \nOwner Address: \nOwner Locality: \nOwner ZipCode: \nOwner Locality ZipCode: \nOwner Country Code: \nOwner Email: \nAdmin Name: Hosting Concepts B.V.\nAdmin Address: Hofplein 20 .\nAdmin Locality: Rotterdam\nAdmin ZipCode: 3032AC\nAdmin Locality ZipCode: Rotterdam\nAdmin Country Code: NL\nAdmin Email: kurt.fernandes@openprovider.nl,domreg@openprovider.nl\nName Server: artemis.dns-parking.com | IPv4: and IPv6: \nName Server: hermes.dns-parking.com | IPv4: and IPv6:"}Domain is active
sikes.jpjpjpICANNHTTP 200148.72.53.56US{"youtube":["https://youtube.com/@sikes-elec"],"facebook":["https://facebook.com/sikeselectric"],"whatsapp":["https://wa.me/8613925228810","https://wa.me/8613925228810?text=%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF%E3%80%81%E3%80%8CShenzhen+Sikes+Electric+Co.%2C+Ltd%E3%80%8D%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E7%9B%B8%E8%AB%87%E3%81%97%E3%81%9F%E3%81%84%E3%81%AE%E3%81%A7%E3%81%99%E3%81%8C%E3%80%82"],"instagram":["https://instagram.com/sikes_elec"]}2026-07-07PHP 8.4.21, MySQL, HTTP/2, Hostinger, WordPress, Google Analytics GA4, Apache HTTP Server, Really Simple CAPTCHA, WhatsApp Business Chat, Google Site Verification2026-08-11TRUE{"A":["148.72.53.56"],"NS":["apollo.dns-parking.com","athena.dns-parking.com"],"SOA":{"mname":"athena.dns-parking.com","retry":2400,"rname":"dns.hostinger.com","expire":604800,"serial":2026080601,"minimum":600,"refresh":10000},"TXT":["google-site-verification=TjjbIF-jAlKlojTRnjuVlrTkeN-lOug1Sl7CWoyVboE"]}0.0000000078892810,283,3452026-05-13WHOIS2026-04-022027-04-302026-04-10{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\n[Domain Name] SIKES.JP\r\n\r\n[Registrant] Guangdong Sikes Electric Co.,Ltd\r\n\r\n[Name Server] apollo.dns-parking.com\r\n[Name Server] athena.dns-parking.com\r\n[Signing Key] \r\n\r\n[Created on] 2026/04/02\r\n[Expires on] 2027/04/30\r\n[Status] Active\r\n[Last Updated] 2026/04/10 00:05:39 (JST)\r\n\r\nContact Information:\r\n[Name] ERIC CHEN\r\n[Email] sales@sikes-elec.com\r\n[Web Page] \r\n[Postal code] \r\n[Postal Address] \r\n[Phone] +86.15012986830\r\n[Fax]"}Domain is active
Showing 5 of 241 rows · Technologies · Full website tech stack per site: CMS, payments, analytics, frameworks.

The Really Simple CAPTCHA dataset

Every site we've detected as running Really Simple CAPTCHA, with version, hosting, country, TLD and traffic rank.

Really Simple CAPTCHA lives inside 2 datasets

Really Simple CAPTCHA detection is part of Technologies (€159/mo) and All data (€599/mo). Buy either to filter the full 241-site list, or grab a free preview first.

Your Really Simple CAPTCHA downloads

The datasets you own, sliced to Really Simple CAPTCHA. Every button streams the latest daily export directly.

Format: JSONL (zstd) Dataset updated: 2026-08-17

API, columns & recipes → /account/api

Which websites are using Really Simple CAPTCHA?

webatla detects every site using Really Simple CAPTCHA and exports them as one downloadable list, so you can see who relies on this technology and what else runs alongside it.

Open the Really Simple CAPTCHA technology dataset to break adoption down by country and TLD, compare it with a competing technology, and track new domains over time.

Frequently asked questions

How many websites use Really Simple CAPTCHA?

webatla detects Really Simple CAPTCHA on 241 websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using Really Simple CAPTCHA?

Yes, as structured JSONL. Grab a free sample first.

What's included for each site, and how fresh is it?

Domain, DNS, RDAP/WHOIS, the full technology stack, IP & country, PageRank and Harmonic, re-detected and re-exported daily.

How do I find the websites using Really Simple CAPTCHA?

Buy the technology dataset, then download the complete list of domains we detect using Really Simple CAPTCHA, re-exported every day.

What else is in the Really Simple CAPTCHA technology data?

Each row places Really Simple CAPTCHA next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking.

Can I download just the sites using Really Simple CAPTCHA, or the whole database?

Both. Every site running Really Simple CAPTCHA comes in the Technologies dataset, one downloadable file. Or buy All data for the entire database: technologies plus identity, ranking, DNS and RDAP/WHOIS for every domain, combined in one file. Daily fresh export.

How do I download the list of websites using Really Simple CAPTCHA?

Three steps: (1) grab the free 10,000-row sample to inspect the schema, (2) buy the Technologies dataset, (3) download the full list of every domain we detect running Really Simple CAPTCHA as a JSON Lines file. It is re-exported daily, so you can re-download the freshest list any time inside your access window. Each row carries the domain plus DNS, WHOIS, IP, hosting country and rank.

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