AS15924 — BORUSANTELEKOM-AS

AS15924 announces 288 IPv4 prefixes covering 323,584 addresses and 42 IPv6 prefixes.

About this network

Five hundred and five IPv4 announcements for three hundred and twenty-five thousand addresses, an average of a few hundred each.

What it's used for

• A carrier's network. Five hundred and five IPv4 prefixes and fifty-three IPv6 prefixes announced from Turkey, three hundred and twenty-five thousand eight hundred and eighty-eight addresses, across one hundred and fifty-six observed BGP neighbours.

Notable

• Every netname follows one template: a country code, a five-letter contraction of the current brand, and a date. The dates span more than a decade of separate allocations.
• The first registrant on nearly every block is a backbone group named after a different company, with the current holder second. One block puts a job title first instead.
• The AS handle names that earlier company too, so the routing record and the registry agree with each other and disagree with the holder.
• The IPv6 prefixes are nested pieces of one range, running from a /41 down to a /48.
• One of eighteen queried addresses answered, and its name is a bare domain with no host label at all.

Interesting

• Five hundred routes for three hundred thousand addresses is aggressive splitting. Each announcement is a lever for steering traffic between upstreams, and a carrier with a hundred and fifty-six neighbours has that many decisions to make.
• The cost is borne by everyone else: each of those routes occupies memory in every router on the internet that carries a full table.

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

Announced prefixes

• 31.145.0.0/21
• 31.145.12.0/22
• 31.145.16.0/22
• 31.145.20.0/24
• 31.145.22.0/23
• 31.145.24.0/21
• 31.145.32.0/22
• 31.145.36.0/23
• 31.145.38.0/24
• 31.145.40.0/21
• 31.145.48.0/21
• 31.145.56.0/23
• 31.145.58.0/24
• 31.145.60.0/22
• 31.145.64.0/21
• 31.145.73.0/24
• 31.145.74.0/23
• 31.145.76.0/22
• 31.145.80.0/21
• 31.145.89.0/24
• 31.145.90.0/23
• 31.145.92.0/22
• 31.145.96.0/20
• 31.145.112.0/21
• 31.145.120.0/23
• 31.145.123.0/24
• 31.145.124.0/22
• 31.145.128.0/21
• 31.145.136.0/22
• 31.145.141.0/24
• 31.145.142.0/23
• 31.145.144.0/20
• 31.145.160.0/21
• 31.145.168.0/23
• 31.145.170.0/24
• 31.145.172.0/22
• 31.145.176.0/20
• 31.145.192.0/22
• 31.145.210.0/23
• 31.145.220.0/24
• 31.145.244.0/22
• 31.145.252.0/23
• 31.145.255.0/24
• 31.155.0.0/22
• 31.155.4.0/23
• 31.155.6.0/24
• 31.155.8.0/22
• 31.155.32.0/20
• 31.155.51.0/24
• 31.155.52.0/24
• 31.155.90.0/24
• 31.169.89.0/24
• 31.177.191.0/24
• 31.206.32.0/21
• 31.206.41.0/24
• 31.206.42.0/23
• 31.206.44.0/22
• 31.206.48.0/20
• 31.206.166.0/23
• 31.206.240.0/22
• 31.206.248.0/22
• 45.156.12.0/22
• 46.221.0.0/22
• 46.221.4.0/23
• 46.221.7.0/24
• 46.221.8.0/21
• 46.221.16.0/23
• 46.221.19.0/24
• 46.221.20.0/22
• 46.221.24.0/21
• 46.221.32.0/19
• 46.234.0.0/21
• 46.234.8.0/23
• 46.234.10.0/24
• 46.234.15.0/24
• 46.234.17.0/24
• 46.234.18.0/23
• 46.234.20.0/22
• 46.234.24.0/21
• 62.244.192.0/20
• 62.244.208.0/21
• 62.244.216.0/22
• 62.244.220.0/24
• 62.244.222.0/24
• 62.244.225.0/24
• 62.244.226.0/23
• 62.244.228.0/22
• 62.244.232.0/24
• 62.244.234.0/23
• 62.244.236.0/24
• 62.244.238.0/23
• 62.244.240.0/23
• 62.244.242.0/24
• 62.244.245.0/24
• 62.244.246.0/23
• 62.244.248.0/21
• 78.135.88.0/24
• 81.8.0.0/21
• 81.8.8.0/22
• 81.8.12.0/23

and 230 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS1273 IDDQD-AS
• AS3257 GTT Communications Inc.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS9121 Turk Telekomunikasyon Anonim Sirketi
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI

Downstream networks

• AS8386 Vodafone Net Iletisim Hizmetler AS
• AS15897 Vodafone Telekomunikasyon A.S.
• AS47524 Turksat Uydu Haberlesme Kablo TV ve Isletme A.S.
• AS8685 Doruk Iletisim ve Otomasyon Sanayi ve Ticaret A.S.
• AS49126 IHS Kurumsal Teknoloji Hizmetleri A.S
• AS197720 TURKTICARET.NET YAZILIM HIZMETLERI SAN. ve TIC. A.S.
• AS12840 ATP YAZILIM VE TEKNOLOJI A.S.
• AS136907 HUAWEI CLOUDS
• AS44565 VITAL TEKNOLOJI TELEKOMUNIKASYON BILGISAYAR HIZMETLERI VE SANAYI TICARET LTD SIRKETI
• AS213145 FIBIM FIBERNET GSM SANAYI VE TICARET ANONIM SIRKETI
• AS44217 IQ Networks for Data and Internet Services Ltd
• AS44547 NETUNDWEB TELEKOMUNIKASYON TICARET LIMITED SIRKETI
• AS47952 ICT BULUT BILISIM A.S.
• AS198417 DSM Grup Danismanlik Iletisim ve Satis Ticaret Anonim Sirketi
• AS34684 Allianz Sigorta A.S.
• AS47134 Eczacibasi Bilisim San.ve Tic. A.S.
• AS43417 Borusan Holding A.S.
• AS13138 Turk Ekonomi Bankasi Anonim Sirketi
• AS64639
• AS212249 EG Veri Merkezi Teknoloji Ltd. Sti.
• AS205953 NAZNET Bilisim ve Telekomunikasyon Elektronik Haberlesme Hiz. ith. ihr. San. ve Tic. Ltd. sti.
• AS209275 NETMAX TELEKOMUNIKASYON ILETISIM HIZMETLERI TICARET LIMITED SIRKETI
• AS47123 TI Sparkle Turkey Telekomunukasyon A.S
• AS20940 Akamai International B.V.
• AS209441 Tekfen Holding Anonim Sirketi

Adjacent networks

• AS1273 IDDQD-AS
• AS8386 Vodafone Net Iletisim Hizmetler AS
• AS15897 Vodafone Telekomunikasyon A.S.
• AS3257 GTT Communications Inc.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3356 Level 3 Parent, LLC
• AS47524 Turksat Uydu Haberlesme Kablo TV ve Isletme A.S.
• AS8685 Doruk Iletisim ve Otomasyon Sanayi ve Ticaret A.S.
• AS44327 DELTA COMM LLC
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS64639
• AS212249 EG Veri Merkezi Teknoloji Ltd. Sti.
• AS49126 IHS Kurumsal Teknoloji Hizmetleri A.S
• AS9121 Turk Telekomunikasyon Anonim Sirketi
• AS44217 IQ Networks for Data and Internet Services Ltd
• AS197720 TURKTICARET.NET YAZILIM HIZMETLERI SAN. ve TIC. A.S.
• AS44547 NETUNDWEB TELEKOMUNIKASYON TICARET LIMITED SIRKETI
• AS12840 ATP YAZILIM VE TEKNOLOJI A.S.
• AS136907 HUAWEI CLOUDS
• AS20940 Akamai International B.V.
• AS44565 VITAL TEKNOLOJI TELEKOMUNIKASYON BILGISAYAR HIZMETLERI VE SANAYI TICARET LTD SIRKETI
• AS213145 FIBIM FIBERNET GSM SANAYI VE TICARET ANONIM SIRKETI
• AS209275 NETMAX TELEKOMUNIKASYON ILETISIM HIZMETLERI TICARET LIMITED SIRKETI
• AS47952 ICT BULUT BILISIM A.S.
• AS198417 DSM Grup Danismanlik Iletisim ve Satis Ticaret Anonim Sirketi

Internet exchanges

• DE-CIX Istanbul — Istanbul, Turkey