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

TR-ISIMTESCIL-20201202 Isimtescil Bilisim A.S. · registered in Turkey

IPv4 addresses7,68011 prefixes · <0.001% of announced IPv4

Rank in Turkey#70largest network in TR by IPv4 space, of 872 · 0.05% of TR

Rank worldwide#11,183of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryTurkey888 ASNs registered there

Open AS51557 in ASN lookup Look up an IP in this network (84.51.21.1) All networks in Turkey

IPv4 prefixes

All 11 prefixes, in address order.

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

Similar-sized networks in Turkey

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AS211249#68 YILDIZ-EDU-NET Yildiz Teknik Universitesi7,936

AS49467#69 EUROTA-ASN INETMAR INTERNET HIZMETLERI BILISM TEKNOLOJILERI SANAYI VE TICARET LIMITED7,680

AS203963#71 RubikDC SPDNet Telekomunikasyon Hizmetleri Bilgi Teknolojileri Taahhut Sanayi Ve Ticaret A.S.7,680

AS44620#72 NETLEN Netlen Internet Hizmetleri Ltd. Sti.7,424

AS15464#73 IHLASNET Ihlas Net A.S.7,168

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources