$ query “AS51791” --type=asn → 1 result(s)
AS51791 · VENTURES-DC
Crestu Teknoloji Dijital Hizmetler Limited Sirketi
AS51791 is operated by Crestu Teknoloji Dijital Hizmetler Limited Sirketi and serves as a residential access provider, established in Türkiye in 2023. The system announces 768 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Türkiye.
Basic Information
- Country
- 🇹🇷 Türkiye
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- October 02, 2023
- Last Changed
- March 13, 2026
- Last Seen
- October 21, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 3 / 2
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 768
- Largest IPv4 Prefix
- /23 (512 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇹🇷 Türkiye (768 IPs)
- Prefix Changed
- September 28, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Downstream Customers
- 1 downstream buying transit
- Unclassified
- 3 unclassified BGP neighbors
- Degree
- 5 unique BGP neighbors
- Reach
- 1 network in customer cone
Upstream Providers (1)
- AS43260 — AS43260
Prefix Lists
IPv4 Prefixes (3 total)
- 153.56.128.0/23 (512 addresses (/23 prefix))
- 153.56.130.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (2 total)
- 2a11:1fc0::/32
- 2a11:1fc2::/32