AS51557 — TR-ISIMTESCIL-20201202 Isimtescil Bilisim A.S.

AS51557 announces 11 IPv4 prefixes covering 7,680 addresses and 0 IPv6 prefixes.

About this network

The AS handle TR-ISIMTESCIL-20201202 is held by Isimtescil Bilisim A.S.

What it's used for

• The address space carries web hosting and business services, evidenced by netnames like TR-ISIMTESCIL-20100903 and ISIMTESCILBILISIM-NET, and reverse DNS entries such as winbayi4.isimtescil.net.
• The network announces 7680 IPv4 addresses across 11 prefixes with only 1 observed neighbour, indicating a small, self-contained hosting or business network rather than a transit provider.
• Traffic from this AS consists of web hosting endpoints and corporate services for Isimtescil, a Turkish web hosting provider.

Notable

• Registrants for the largest prefixes are Isimtescil Bilisim A.S. and Superonline Iletisim Hizmetleri A.S., with the latter associated with Turkcell corporate support, suggesting historical or leased address space.
• The address inventory is fragmented into multiple /24 and smaller blocks, with a mix of registrants reflecting the company's operational history and potential acquisitions.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 84.51.21.0/24
• 84.51.25.0/24
• 84.51.38.0/24
• 91.93.146.0/24
• 91.93.149.0/24
• 91.93.151.0/24
• 91.93.152.0/24
• 93.89.224.0/20
• 185.33.232.0/22
• 185.111.232.0/23
• 185.111.234.0/24

Upstream networks

• AS34984 Superonline Iletisim Hizmetleri A.S.

Adjacent networks

• AS34984 Superonline Iletisim Hizmetleri A.S.

Routing security

• RPKI: 12 valid, 0 invalid and 0 not-found announcements; 13 ROAs.
• ASPA: none published.
• IRR: 42% of announcements registered; 11 route objects.
• Listed in as-sets: AS-TELETEK, AS34984:AS-TELLCOM.