Institution Profiling / Cloud Service

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi

The company delivers domain registration, shared and cloud hosting, dedicated servers, colocation, cabinet rental, and IPv4 subnet leasing. It peers upstream with DGN TEKNOLOJI and serves downstream customers including MEOHOST and Mehmet UGURLU. Its autonomous system AS51791 originates a small set of IPv4 and IPv6 prefixes, and its entire public registry attribution depends on the role handle DA11482-RIPE.

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi

Sources

Public references used for this article.

  • Registry RDAP / WHOIS recordThe RDAP record for AS208394 returned the DA11482-RIPE handle, which was incorrectly used to seed the 'Director' profile; this ASN belongs to Matthew Gall and is not associated with CRESTU. (source risk: low)
  • Operator websiteCRESTU’s website identifies CRESTU TEKNOLOJI DIJITAL HIZMETLER LIMITED SIRKETI and advertises domain, hosting, server, datacenter, colocation, cabinet rental, and IPv4 subnet rental services. (source risk: low)
  • crestu.comCRESTU’s sales contract identifies the seller and states that services can cover data-center, hosting, server, domain, certificate, and similar digital services, with payment, activation, AUP, suspension, and liability terms. (source risk: low)
  • Operator websiteVentures DC’s website markets server rental, server hosting, cabinet rental, VPS, 7/24 technical support, continuity, and data-center infrastructure services. (source risk: low)
  • ventures.com.trVentures DC’s cabinet-rental article describes colocation/rack models where customers own hardware while the data center supplies cabinet space, power, cooling, physical security, network connectivity, and support. (source risk: low)
  • bgp.toolsBGP.tools lists AS51791 as Crestu Teknoloji Dijital Hizmetler Limited Sirketi, registered under RIPE, active, with ventures.com.tr as website, 7 IPv4 and 4 IPv6 originated prefixes, one upstream, and two downstreams. (source risk: low)
  • Registry RDAP / WHOIS recordPublic WHOIS mirrors for AS51791 show DA11482-RIPE as a role named Director and connect it to CRESTU/VENTURES DC registry records, supporting the conclusion that "Director" is a contact role rather than the institution. (source risk: low)
  • ipinfo.ioThe AS208394 public ASN page identifies a separate Matthew Gall/as208394.net context, creating a mismatch with the DA11482-RIPE/CRESTU evidence used to form the current "Director" record. (source risk: low)
CategoryInstitution

The company delivers domain registration, shared and cloud hosting, dedicated servers, colocation, cabinet rental, and IPv4 subnet leasing. It peers upstream with DGN TEKNOLOJI and serves downstream customers including MEOHOST and Mehmet UGURLU. Its autonomous system AS51791 originates a small set of IPv4 and IPv6 prefixes, and its entire public registry attribution depends on the role handle DA11482-RIPE.

RegionTurkey

Network analysts and abuse handlers monitoring Turkish hosting infrastructure depend on the stability of the RIPE record linking AS51791 to CRESTU. A change to that record could instantly obscure the operator’s identity, disrupt abuse handling, and hide the control surface behind colocation and IP leasing customers. The company’s broad service portfolio—from domain registration to cabinet rental—makes it a central dependency for a range of downstream clients.

Signal FocusHosting, colocation, and IP leasing

Network analysts and abuse handlers monitoring Turkish hosting infrastructure depend on the stability of the RIPE record linking AS51791 to CRESTU. A change to that record could instantly obscure the operator’s identity, disrupt abuse handling, and hide the control surface behind colocation and IP leasing customers. The company’s broad service portfolio—from domain registration to cabinet rental—makes it a central dependency for a range of downstream clients.

Content TypeProfile

The company delivers domain registration, shared and cloud hosting, dedicated servers, colocation, cabinet rental, and IPv4 subnet leasing. It peers upstream with DGN TEKNOLOJI and serves downstream customers including MEOHOST and Mehmet UGURLU. Its autonomous system AS51791 originates a small set of IPv4 and IPv6 prefixes, and its entire public registry attribution depends on the role handle DA11482-RIPE.

Primary DomainInfrastructure

If the DA11482-RIPE role is altered, removed, or reassigned, the ability to associate AS51791 with CRESTU degrades immediately. That breakdown would delay abuse response, break chain-of-trust for downstream networks, and make it harder to determine who controls the IP resources used by colocated hardware and hosting customers. No fallback public attribution mechanism exists.

TopicHosting, colocation, and IP leasing

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi provides hosting, colocation, servers, and IP leasing under the CRESTU and Ventures DC brands. Its AS51791 network has upstream DGN TEKNOLOJI and downstreams MEOHOST and Mehmet UGURLU. Public attribution relies on the RIPE role DA11482-RIPE, which lacks a named individual. Evidence is limited to operator websites, BGP.tools, and WHOIS mirrors; facility certifications, legal brand linkage, and a PeeringDB entry are missing. Watchpoints include registry record changes, BGP prefix volatility, and brand consistency. The company’s impact is moderate, but its registry fragility is a critical operational watchpoint.

ImpactMedium

If the DA11482-RIPE role is altered, removed, or reassigned, the ability to associate AS51791 with CRESTU degrades immediately. That breakdown would delay abuse response, break chain-of-trust for downstream networks, and make it harder to determine who controls the IP resources used by colocated hardware and hosting customers. No fallback public attribution mechanism exists.

Confidence?Confidence Grade
0.90–1.00AHigh — direct sources
0.75–0.89A/BStrong
0.55–0.74B/CMedium
0.35–0.54C/DWeak–medium
0.10–0.34DWeak signal
0.00–0.09DInternal monitoring
High confidence (95%)

Several public sources

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi provides hosting, colocation, servers, and IP leasing under the CRESTU and Ventures DC brands. Its AS51791 network has upstream DGN TEKNOLOJI and downstreams MEOHOST and Mehmet UGURLU. Public attribution relies on the RIPE role DA11482-RIPE, which lacks a named individual. Evidence is limited to operator websites, BGP.tools, and WHOIS mirrors; facility certifications, legal brand linkage, and a PeeringDB entry are missing. Watchpoints include registry record changes, BGP prefix volatility, and brand consistency. The company’s impact is moderate, but its registry fragility is a critical operational watchpoint.

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi, que opera bajo las marcas CRESTU y Ventures DC, es un proveedor turco de alojamiento y colocación. Su sistema autónomo, AS51791, conecta su infraestructura a Internet, pero su atribución pública depende de un único contacto de rol RIPE. Este perfil examina los servicios de la empresa, su presencia de red y la fragilidad de su registro.

Por qué es importante

Si el rol DA11482-RIPE se modifica, elimina o reasigna, la capacidad de asociar AS51791 con CRESTU se degrada de inmediato. Esa ruptura retrasaría la respuesta a abusos, rompería la cadena de confianza de las redes descendentes y dificultaría determinar quién controla los recursos IP utilizados por hardware alojado y clientes de hosting. No existe ningún mecanismo público de atribución alternativo. Ver también: Autoridad Portuaria de Hamburgo AöR.

Lo que muestran las fuentes públicas

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi opera dos marcas—CRESTU y Ventures DC—que ofrecen registro de dominios, hosting compartido y en la nube, servidores dedicados, colocación, alquiler de armarios y arrendamiento de subredes IPv4 desde Turquía. Su sistema autónomo, AS51791, conecta su infraestructura a Internet y da servicio a clientes descendentes. La atribución pública de esa red depende por completo de un único rol de registro de Internet, lo que hace que la identidad de la empresa sea inusualmente frágil para un proveedor de hosting operativo. Ver también: Saudi Information Technology Company CJSC.

Los sitios web del operador en crestu.com y ventures.com.tr anuncian una amplia cartera: registro de dominios, VPS, servidores en la nube, colocación, alquiler de armarios y soporte 24/7. Un contrato de venta a distancia en crestu.com describe los términos de pago electrónico, uso aceptable y suspensión. BGP.tools muestra que AS51791 origina siete prefijos IPv4 y cuatro IPv6, con el proveedor de tránsito DGN TEKNOLOJI y las redes descendentes MEOHOST y Mehmet UGURLU. No se ha encontrado ninguna entrada en PeeringDB ni certificación independiente del centro de datos. Ver también: EDEKA DIGITAL GmbH.

El frágil vínculo entre la empresa y su red es el rol RIPE DA11482‑RIPE, etiquetado como “Director”. Las réplicas públicas de WHOIS lo muestran como el único contacto administrativo y técnico de AS51791. En ese registro no aparece ninguna persona física identificada. Si el rol se modifica, elimina o reasigna a otra entidad, la capacidad de atribuir el sistema autónomo a CRESTU se degrada instantáneamente. Ver también: EVRAZ.

No existe un contacto secundario ni un mecanismo de respaldo en el registro público. Ver también: CTM-PGZ OSRODEK BADAWCZO-ROZWOJOWY CENTRUM TECHNIKI MORSKIEJ SA.

Ese punto único de fallo retrasaría la gestión de abusos, rompería la cadena de confianza de las redes descendentes y ocultaría quién controla los recursos IP utilizados por clientes de colocación y hosting. Las instalaciones físicas permanecen sin verificar: no hay auditoría independiente, certificación ni ubicación exacta del centro de datos disponible públicamente. La relación jurídica entre las marcas CRESTU y Ventures DC también se infiere de la superposición operativa más que de la documentación en registros mercantiles. Ver también: ELYON-CLOUD ELYON CLOUD LLC.

Los analistas deben vigilar los cambios en el rol DA11482‑RIPE, el objeto de organización ORG‑CTDH1‑RIPE o los campos del mantenedor en la base de datos RIPE. Los anuncios o retiros inesperados de prefijos BGP de AS51791 pueden indicar cambios en la infraestructura. La fusión o divergencia de los dos sitios web del operador podría señalar una reestructuración corporativa. La aparición de una persona física identificada, un registro en PeeringDB o una auditoría de las instalaciones reduciría materialmente la incertidumbre y reforzaría la cadena de atribución pública. Ver también: KANTONAR Kanton Appenzell Ausserrhoden.

La evidencia de este perfil procede de los propios sitios web de la empresa, un contrato de venta, BGP.tools y réplicas de WHOIS. Se conoce una discrepancia con AS208394, que está asociado a una entidad separada y no se utiliza aquí. Entre los datos faltantes se incluyen certificaciones de las instalaciones, ingresos exactos y la identidad de la persona o equipo detrás del identificador DA11482‑RIPE.

Mientras no se cubran estas lagunas, la atribución pública de la red de la empresa seguirá estando a una sola actualización del registro de la opacidad.

Superficie operativa

La empresa ofrece registro de dominios, hosting compartido y en la nube, servidores dedicados, colocación, alquiler de armarios y arrendamiento de subredes IPv4. Se conecta en tránsito con DGN TEKNOLOJI y da servicio a clientes descendentes como MEOHOST y Mehmet UGURLU. Su sistema autónomo AS51791 origina un pequeño conjunto de prefijos IPv4 e IPv6, y toda su atribución en el registro público depende del identificador de rol DA11482-RIPE.

Los analistas de redes y los gestores de abusos que supervisan la infraestructura de hosting turca dependen de la estabilidad del registro RIPE que vincula AS51791 con CRESTU. Un cambio en ese registro podría ocultar instantáneamente la identidad del operador, interrumpir la gestión de abusos y esconder la superficie de control detrás de los clientes de colocación y arrendamiento de IP. La amplia cartera de servicios de la empresa —desde el registro de dominios hasta el alquiler de armarios— la convierte en una dependencia central para una serie de clientes descendentes.

Puntos de vigilancia

La empresa opera un negocio de hosting y colocación pequeño pero real, con dependencia internacional de la estabilidad del registro RIPE. La falta de documentación hace que la superficie de control real sea más reducida de lo que parece.

Cambios en RDAP/WHOIS de DA11482-RIPE, nuevos anuncios BGP, cambios en las páginas de las marcas, cualquier entrada en PeeringDB.

Certificaciones de las instalaciones, ubicación exacta, registro legal que vincule CRESTU y Ventures DC, persona física identificada para el rol, cifras de ingresos.

Fuentes

  • Registro RDAP / WHOIS - El registro RDAP de AS208394 devolvió el identificador DA11482-RIPE, que se utilizó incorrectamente para alimentar el perfil de 'Director'; este ASN pertenece a Matthew Gall y no está asociado con CRESTU.
  • Sitio web del operador - El sitio web de CRESTU identifica a CRESTU TEKNOLOJI DIJITAL HIZMETLER LIMITED SIRKETI y anuncia servicios de dominio, hosting, servidores, centro de datos, colocación, alquiler de armarios y alquiler de subredes IPv4.
  • crestu.com - El contrato de venta de CRESTU identifica al vendedor y establece que los servicios pueden cubrir centro de datos, hosting, servidores, dominio, certificado y servicios digitales similares, con condiciones de pago, activación, AUP, suspensión y responsabilidad.
  • Sitio web del operador - El sitio web de Ventures DC comercializa alquiler de servidores, hosting de servidores, alquiler de armarios, VPS, soporte técnico 24/7, continuidad y servicios de infraestructura de centro de datos.
  • ventures.com.tr - El artículo de alquiler de armarios de Ventures DC describe modelos de colocación/rack en los que los clientes poseen el hardware mientras que el centro de datos proporciona espacio en armario, energía, refrigeración, seguridad física, conectividad de red y soporte.
  • bgp.tools - BGP.tools enumera AS51791 como Crestu Teknoloji Dijital Hizmetler Limited Sirketi, registrado en RIPE, activo, con ventures.com.tr como sitio web, 7 prefijos IPv4 y 4 IPv6 originados, un tránsito ascendente y dos descendentes.
  • Registro RDAP / WHOIS - Las réplicas públicas de WHOIS para AS51791 muestran DA11482-RIPE como un rol denominado Director y lo conectan a los registros de CRESTU/VENTURES DC, lo que respalda la conclusión de que "Director" es un rol de contacto en lugar de la institución.
  • ipinfo.io - La página pública de AS208394 en ipinfo.io identifica un contexto separado de Matthew Gall/as208394.net, creando una discrepancia con la evidencia DA11482-RIPE/CRESTU utilizada para formar el registro actual de "Director".

Domain of operation

CRESTU Teknoloji Dijital Hizmetler Limited Sirketi, operating under the CRESTU and Ventures DC brands, is a Turkish hosting and colocation provider. Its autonomous system, AS51791, links its infrastructure to the global internet, but its public attribution hinges on a single RIPE role contact. This profile examines the company’s services, network footprint, and registry fragility.

  • Registry RDAP / WHOIS record: The RDAP record for AS208394 returned the DA11482-RIPE handle, which was incorrectly used to seed the 'Director' profile; this ASN belongs to Matthew Gall and is not associated with CRESTU. Evidence basis: source-8d64d93d68ea

Timeline

  1. CRESTU Teknoloji Dijital Hizmetler Limited Sirketi public evidence observed

    Network analysts and abuse handlers monitoring Turkish hosting infrastructure depend on the stability of the RIPE record linking AS51791 to CRESTU. A change to that record could instantly obscure the operator’s identity, disrupt abuse handling, and hide the control surface behind colocation and IP leasing customers. The company’s broad service portfolio—from domain registration to cabinet rental—makes it a central dependency for a range of downstream clients.

At A Glance

  • Name: CRESTU Teknoloji Dijital Hizmetler Limited Sirketi
  • Type: Digital infrastructure institution
  • Base: Turkey
  • Profile focus: Institution

What It Does

  • public operating records
  • official service pages
  • documented relationships updates

Why It Matters

  • If the DA11482-RIPE role is altered, removed, or reassigned, the ability to associate AS51791 with CRESTU degrades immediately. That breakdown would delay abuse response, break chain-of-trust for downstream networks, and make it harder to determine who controls the IP resources used by colocated hardware and hosting customers. No fallback public attribution mechanism exists.
  • Operational criticality: Medium
  • Time horizon: Next quarter

What To Watch

  • official company sources
  • public registries
  • operator-published records
NowMedium priority

Track verified source updates, role changes, and current public evidence.

QuarterMedium policy sensitivity

If the DA11482-RIPE role is altered, removed, or reassigned, the ability to associate AS51791 with CRESTU degrades immediately. That breakdown would delay abuse response, break chain-of-trust for downstream networks, and make it harder to determine who controls the IP resources used by colocated hardware and hosting customers. No fallback public attribution mechanism exists.

YearNext quarter outlook

Longer-term relevance depends on verified operating, policy, and relationship changes.

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Public View

If the DA11482-RIPE role is altered, removed, or reassigned, the ability to associate AS51791 with CRESTU degrades immediately. That breakdown would delay abuse response, break chain-of-trust for downstream networks, and make it harder to determine who controls the IP resources used by colocated hardware and hosting customers. No fallback public attribution mechanism exists.

Watchpoints

  • The company operates a small but real hosting and colocation business with international dependency on RIPE registry stability.
  • Missing documentation makes the real control surface thinner than it appears.
  • RDAP/WHOIS changes for DA11482-RIPE, new BGP announcements, brand page changes, any PeeringDB entry.

Caveats

  • Public evidence is used only for source-backed claims.
  • Private control or contract claims require separate public support.

FAQ

Why does BTW track CRESTU Teknoloji Dijital Hizmetler Limited Sirketi?

Network analysts and abuse handlers monitoring Turkish hosting infrastructure depend on the stability of the RIPE record linking AS51791 to CRESTU. A change to that record could instantly obscure the operator’s identity, disrupt abuse handling, and hide the control surface behind colocation and IP leasing customers. The company’s broad service portfolio—from domain registration to cabinet rental—makes it a central dependency for a range of downstream clients.

What evidence supports the profile?

The RDAP record for AS208394 returned the DA11482-RIPE handle, which was incorrectly used to seed the 'Director' profile; this ASN belongs to Matthew Gall and is not associated with CRESTU.

What should readers watch next?

The company operates a small but real hosting and colocation business with international dependency on RIPE registry stability.

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