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Categories: Development

Tags: Open SourceCyber Securitycatboostmatrixnetboostinggradient boostinggradient boosting on decision treesdecision treesclassificationregression
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LightGBMXGBoost

CatBoost is an open-source gradient boosting on decision trees library with categorical features support out of the box, successor of the MatrixNet algorithm developed by Yandex.

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Updated: 2026-09-03 15:38 Language: English (default) Access: Normal

Profile views 13 Outbound visits 6
CatBoost Full homepage screenshot

Website Overview

Limited stack disclosure and few obvious backend markers suggest a more restrained public footprint. That reduces easy fingerprinting clues but is not proof of overall security. An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality.

Domain and Registration

Registered in 2018, this domain has about 8 years of history. That suggests continuity, although ownership and purpose may have changed. The registrar, SafeNames Ltd., specializes in corporate domain and brand management, suggesting attention to domain asset protection. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. Registration contact information is publicly available through RDAP. The domain uses the common .ai extension, which is not an independent safety signal.

DNS and Email

The observed email authentication setup is incomplete: DMARC is missing. Nameservers are provided by yandex.ru, indicating managed DNS hosting. MX records point to the Yandex Mail email service. No CNAME was found; the observed records resolve directly to addresses. DNSSEC signatures were not detected, so this additional DNS authenticity protection is not confirmed.

TLS and Certificates

The certificate includes the organization field YANDEX LLC. The certificate issuer is GlobalSign nv-sa, a commercial certificate authority. The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. The certificate is valid for about 181 days in total, with 71 days remaining.

HTTP and Browser Security

The response lacks these common security headers: HSTS, Referrer-Policy, Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. Cookie security attributes are unknown. No explicit CDN or WAF marker was found in the response headers.

Technology Stack Analysis

No obvious technology stack is exposed. This may reflect restrained information disclosure, although the underlying technologies remain unknown.

Search and Social Sharing

The meta description has 178 characters and may be shortened in search results. No homepage canonical URL was detected. If duplicate URLs exist, consolidation may be less explicit. Twitter Card metadata is configured. The title has 48 characters, within a common display range. The observed directives allow indexing and link following.

Hosting and Email

DNSyandex.ru
HostingYANDEX LLC
EmailYandex Mail
Location Russia flagRussia 87.250.251.101

Pages, Search and Sharing

Meta descriptionCatBoost is an open-source gradient boosting on decision trees library with categorical features support out of the box, successor of the MatrixNet algorithm developed by Yandex.
Canonical URLNot detected
LanguageEnglish (default)
Twitter Cardsummary_large_image

Social Sharing Preview

9 fields

robots.txt (opens in a new tab)

0 rules

No rules found

Sitemaps

0

No sitemaps found

Registration details RDAP / WHOIS

RegistrarSafeNames Ltd.
Registered2018-07-18
Expires2028-07-18
Domain statusclient delete prohibited、client transfer prohibited、client update prohibited
Nameserversns3.yandex.ru、ns4.yandex.ru
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Acatboost.ai87.250.251.101526—
AAAAcatboost.ai2a02:6b8::1b526—
MXcatboost.aimx.yandex.net60010
NScatboost.ains3.yandex.ru172800—
NScatboost.ains4.yandex.ru172800—
TXTcatboost.ai45e3b7565dc5130458f2bead528f8f6000d78f2b5fd904b06355c19f0cd3e4f1200—
TXTcatboost.ai74b1361e01ce3f00a64764e427982ccfa9a6095cf6dddbe134c1f7c6e31464d1200—
TXTcatboost.ai96ecd6928cf6313019cf2d11dc11d6fa945e5d808fcd391ce076bcd6968aa391200—
TXTcatboost.ai_globalsign-domain-verification=z7UiS0mcFFMxyBprD2uPtYBsgUMtbiM63DrtymV1uC1200—
TXTcatboost.aieced46c4f76105e697e704baf7dae80f0c6827e1c7e26996a0c5cc2d5411c8b1200—
TXTcatboost.aihttps://issues.sonatype.org/browse/OSSRH-429411200—
TXTcatboost.aimailru-verification: 6b9c0cbe958893021200—
TXTcatboost.aiv=spf1 redirect=_spf.yandex.ru1200—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2
Negotiated protocolTLSv1.2
Certificate subjectcatboost.ai
IssuerGlobalSign nv-sa
Valid until2026-11-13T20:59 · Remaining when checked: 71 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
content-security-policydefault-src 'none'; script-src 'unsafe-eval' 'unsafe-inline' 'nonce-AkmOS2O+DaWg/pD6m660yg==' mc.yandex.ru social.yandex.ru yastatic.net; style-src 'unsafe-inline' mc.yandex.ru yastatic.net; img-src 'self' data: avatars.yandex.net avatars.mds.yandex.net avatars.mdst.yandex.net mc.yandex.ru ext.captcha.yandex.net yastatic.net; connect-src 'self' mc.yandex.ru; frame-src www.youtube.com video.yandex.ru player.video.yandex.net; media-src ext.captcha.yandex.net; font-src yastatic.net; report-uri https://csp.yandex.net/csp?from=promo-catboost-2017&yandex_login=undefined&yandexuid=undefined;
x-frame-optionsDENY
x-content-type-optionsnosniff
set-cookieRedacted

Identified technologies

Technology stack: Unknown

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