AS201021 — OnurBilisim-AS Ahmet Onur Guney trading as Onur Bilisim Ve Yazilim Hizmetleri

AS201021 announces 35 IPv4 prefixes covering 11,264 addresses and 0 IPv6 prefixes.

About this network

ONURBILISIM-AS is operated by Onur Bilisim Ve Yazilim Hizmetleri, a Turkish IT services and software company.

What it's used for

• The address space carries hosting and business services, evidenced by netnames like TR-ONURBILISIMCOMTR and reverse DNS entries such as rdnsrecord.onurbilisim.com.tr.
• The AS announces 16,128 IPv4 addresses across 52 prefixes while maintaining only 2 observed neighbours, a ratio indicative of a hosting or access network rather than a transit provider.
• Traffic from this AS consists of web endpoints, API services, and hosted applications for the operator's clients, consistent with its business profile as an IT services provider.

Notable

• Registrants for the largest prefixes (185.28.60.0/22, 185.103.196.0/22, 185.106.20.0/22) align with the announcer, listing Ahmet Onur Guney trading as Onur Bilisim Ve Yazilim Hizmetleri.
• The inventory includes prefixes registered to other entities, such as Interlir NOC for 13.143.211.0/24 and Reliable Communications s.r.o. for 212.193.12.0/23, suggesting leased or inherited address space.
• The address inventory is fragmented, mixing /22 and /24 blocks from various historical registrants, including Farhang Azma Communications Company LTD.

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

Announced prefixes

• 13.143.211.0/24
• 13.143.218.0/24
• 13.143.226.0/24
• 13.143.238.0/24
• 13.143.250.0/24
• 31.77.58.0/24
• 78.17.182.0/24
• 78.17.255.0/24
• 89.125.20.0/24
• 89.125.252.0/24
• 104.143.203.0/24
• 104.143.216.0/24
• 132.243.72.0/24
• 132.243.75.0/24
• 162.35.226.0/24
• 162.35.228.0/24
• 163.5.39.0/24
• 163.5.66.0/24
• 163.5.182.0/24
• 163.5.237.0/24
• 163.5.246.0/24
• 185.28.60.0/22
• 185.84.183.0/24
• 185.103.196.0/22
• 185.106.20.0/22
• 185.176.95.0/24
• 192.124.188.0/24
• 194.87.75.0/24
• 194.87.229.0/24
• 195.133.43.0/24
• 195.133.95.0/24
• 201.10.81.0/24
• 201.10.95.0/24
• 212.192.10.0/24
• 212.192.209.0/24

Upstream networks

• AS48678 Pentech Bilisim Teknolojileri Sanayi Ve Ticaret Limited Sirketi
• AS9121 Turk Telekomunikasyon Anonim Sirketi

Adjacent networks

• AS48678 Pentech Bilisim Teknolojileri Sanayi Ve Ticaret Limited Sirketi
• AS9121 Turk Telekomunikasyon Anonim Sirketi

Routing security

• RPKI: 45 valid, 17 invalid and 4 not-found announcements; 45 ROAs.
• ASPA: none published.
• IRR: 67% of announcements registered; 44 route objects.
• Listed in as-sets: AS-BNET, AS-BTELEKOM, AS-DGN, AS-PENTECH, AS-STORMWALL-SET, AS-STORMWALL-SET, AS-TTNET, AS-UDOS, AS211567:AS-BITWISE, AS34984:AS-TELLCOM.