AS15958 — CETIN_doo_AS CETIN Ltd. Belgrade

AS15958 announces 26 IPv4 prefixes covering 69,632 addresses and 1 IPv6 prefixes.

About this network

One thousand seven hundred and nineteen observed neighbours, the highest count in this range by a wide margin.

What it's used for

• A network infrastructure company carrying a mobile operator's traffic. Thirty IPv4 prefixes and one IPv6 /32 announced from Serbia, sixty-nine thousand six hundred and thirty-two addresses.

Notable

• The neighbour count is one thousand seven hundred and nineteen, against sixty-nine thousand addresses. Nothing else in this stretch comes close.
• The netnames split in two: a country code with the brand and a date, listing the company, a named individual and an abuse role; or the brand with a contraction for an access point name, listing only an abuse role.
• Nine of eighteen queried addresses answered, all on a third company's domain, with a mobile broadband label and the four octets reversed and hyphenated after the word for a network.
• Six of those nine carry an extra label marking the addresses as changeable; three do not.
• The AS handle uses underscores and repeats the brand twice, once with the legal form and once with the word for a network.

Interesting

• A neighbour count in the thousands does not mean thousands of contracts. It means this number is visible from an enormous number of vantage points, which is what happens when a wholesale carrier's routes are relayed onward by everyone who buys from its customers.
• An access point name in a netname is a mobile network's marker for which service a block belongs to, and it is the clearest sign in this record of what the addresses actually do.

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

Announced prefixes

• 109.106.224.0/23
• 109.106.227.0/24
• 109.106.228.0/24
• 109.106.231.0/24
• 109.106.232.0/24
• 109.106.238.0/23
• 109.245.0.0/20
• 109.245.16.0/21
• 109.245.24.0/22
• 109.245.28.0/23
• 109.245.30.0/24
• 109.245.32.0/20
• 109.245.48.0/22
• 109.245.52.0/23
• 109.245.54.0/24
• 109.245.58.0/23
• 109.245.60.0/24
• 109.245.64.0/18
• 109.245.128.0/18
• 109.245.192.0/20
• 109.245.208.0/21
• 109.245.217.0/24
• 109.245.218.0/23
• 109.245.220.0/22
• 109.245.224.0/19
• 217.65.192.0/20
• 2a01:ac80::/32

Upstream networks

• AS44306 OMONIA d.o.o.
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS34549 meerfarbig GmbH & Co. KG
• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS50304 Blix Solutions AS
• AS174 Cogent Communications, LLC
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS50673 Serverius Holding B.V.
• AS3303 Swisscom (Schweiz) AG
• AS49673 Truenetwork LLC
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS9002 RETN Limited
• AS3741 Dimension Data
• AS37100 SEACOM Limited
• AS17639 Converge ICT Solutions Inc.
• AS13004 Serbian Open Exchange DOO
• AS12779 IT.Gate S.p.A.
• AS1680 Cellcom Fixed Line Communication L.P
• AS6797 GlobalConnect AB
• AS29075 IELO-LIAZO SERVICES SAS

Downstream networks

• AS197423 Jotel d.o.o.
• AS31042 Yettel d.o.o.
• AS203877 ASTRA TELEKOM DOO BEOGRAD
• AS14544 Oracle Corporation
• AS201236 NETCAST OBLAK d.o.o. Beograd
• AS34724 BAU NETWORKS DOO TORNJOS
• AS213306 Comtrade System Integration doo Belgrade Serbia
• AS51859 Mainstream doo Beograd
• AS15397 One Crna Gora DOO
• AS42860 Energy Financing Team (Switzerland) AG
• AS57486 Optel Telekom Tim d.o.o.
• AS56569 NLB Banka AD Beograd
• AS198171 Webglobe, s.r.o.
• AS47267 Serbian National Internet Domain Registry Foundation
• AS205201 Public Service Media Radio Television of Serbia
• AS28964 Orion Telekom Tim d.o.o.Beograd
• AS44287 JP Elektromreza Srbije Beograd
• AS35779 mCloud doo
• AS206580 HBIS GROUP Serbia Iron & Steel d.o.o. Smederevo
• AS43608 IT011 d.o.o
• AS43547 Enterprise Services d.o.o.
• AS198691 SPACE Admins d.o.o.
• AS43191 Providus d.o.o.
• AS394977 TAKE-TWO INTERACTIVE SOFTWARE, INC.
• AS44306 OMONIA d.o.o.

Adjacent networks

• AS31042 Yettel d.o.o.
• AS1299 Arelion Sweden AB
• AS3356 Level 3 Parent, LLC
• AS197423 Jotel d.o.o.
• AS44306 OMONIA d.o.o.
• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS203877 ASTRA TELEKOM DOO BEOGRAD
• AS9002 RETN Limited
• AS14544 Oracle Corporation
• AS15397 One Crna Gora DOO
• AS174 Cogent Communications, LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS213306 Comtrade System Integration doo Belgrade Serbia
• AS201236 NETCAST OBLAK d.o.o. Beograd
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS50673 Serverius Holding B.V.
• AS56655 Gigahost AS
• AS34724 BAU NETWORKS DOO TORNJOS
• AS37721 Virtual Technologies & Solutions
• AS3303 Swisscom (Schweiz) AG
• AS51859 Mainstream doo Beograd
• AS213241 TECHIT.BE SRL
• AS50304 Blix Solutions AS
• AS17639 Converge ICT Solutions Inc.

Routing security

• RPKI: 10 valid, 0 invalid and 0 not-found announcements; 22 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 93 route objects.
• Listed in as-sets: AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-OMONIA, AS-ORIONTELEKOM, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-TELENORDOO, AS-UDOS, AS-VIX-MEMBERS, AS16347:AS-AMSIX-RS-EXCEPT, AS29075:AS-PEERS:AS-AMS-IX, AS3303:AS-SWCMPEERS, AS37271:AS-PEERS, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS6777:AS-AMS-IX-RS, AS6777:AS-AMS-IX-RS-SETS, AS6777:AS-AMS-IX-RS-SETS-V6, AS6777:AS-AMS-IX-RS-V6, AS680:AS-AMSIX-RS-PEERS, AS8218:AS-AMSIX-RS.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Vienna Internet Exchange — Vienna, Austria
• InterLAN-IX — Bucharest, Romania
• Budapest Internet Exchange — Budapest, Hungary
• Serbian Open Exchange — Belgrade, Serbia
• T-CIX — Sofia, Bulgaria