AS9002 — RETN-AS RETN Limited

AS9002 announces 21 IPv4 prefixes covering 22,528 addresses and 1 IPv6 prefixes.

About this network

RETN-AS is RETN Limited, a large independent international transit carrier operating a backbone across Europe, the CIS, the Caucasus, Central Asia and onward to Asia and North America.

What it's used for

Wholesale IP transit, wavelength and Ethernet services. The role is unmistakable in the routing data: only ~41k addresses of directly announced IPv4 space but ~3,168 observed BGP neighbours, the signature of a carrier whose value is interconnection rather than address holdings. Under the neighbour-count-beats-address-count rule this is a transit backbone, not an eyeball or hosting network.

Notable

The announced prefixes are a scatter of small blocks (many /24s and a few /22–/19s) drawn from ranges RETN carries for customers. Sampled reverse DNS on several of them resolves to rt01.beget.ru-style router names, i.e. downstream customer infrastructure (Beget, a Russian host), riding RETN transit rather than RETN's own eyeball space.

Interesting

RETN is one of the more prominent independent (non-incumbent) carriers bridging Western Europe and the former-Soviet region, widely present at European internet exchanges.

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

Announced prefixes

• 45.39.107.0/24
• 45.39.108.0/24
• 81.19.134.0/24
• 85.136.179.0/24
• 87.245.208.0/21
• 87.245.224.0/19
• 89.19.36.0/22
• 94.158.240.0/22
• 104.233.6.0/24
• 139.45.192.0/22
• 139.45.196.0/23
• 139.45.200.0/21
• 139.45.208.0/23
• 139.45.210.0/24
• 139.45.218.0/23
• 139.45.220.0/22
• 185.13.152.0/22
• 185.82.8.0/23
• 185.82.10.0/24
• 193.109.100.0/22
• 213.108.245.0/24
• 2a02:2d8::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS38001 NewMedia Express Pte Ltd
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS213241 TECHIT.BE SRL
• AS3257 GTT Communications Inc.
• AS3320 Deutsche Telekom AG
• AS57866 Fusix Networks B.V.
• AS3303 Swisscom (Schweiz) AG
• AS12552 GlobalConnect AB
• AS8551 Bezeq International Ltd.
• AS50673 Serverius Holding B.V.
• AS29075 IELO-LIAZO SERVICES SAS
• AS59919 Brainbox S.r.l.
• AS4637 Telstra Global
• AS3216 PJSC "Vimpelcom"
• AS4657 StarHub Ltd
• AS37100 SEACOM Limited

Downstream networks

• AS16509 Amazon.com, Inc.
• AS4780 Digital United Inc.
• AS48031 Ivanov Vitaliy Sergeevich
• AS6079 RCN
• AS6327 Shaw Communications
• AS202656 Ivanov Vitaliy Sergeevich
• AS9123 JSC "TIMEWEB"
• AS4761 INDOSAT Internet Network Provider
• AS41798 JSC Transtelecom
• AS216071 SERVERS TECH FZCO
• AS13188 CONTENT DELIVERY NETWORK LTD
• AS3257 GTT Communications Inc.
• AS12735 TurkNet Iletisim Hizmetleri A.S.
• AS54113 Fastly, Inc.
• AS2856 British Telecommunications Limited
• AS11492 CABLE ONE, INC.
• AS714 Apple Inc.
• AS2914 NTT America, Inc.
• AS44702 JORDANIAN EUROPEAN INTERNET SERVICES CO LLC
• AS39184 UltraNET Ltd
• AS4764 Aussie Broadband
• AS8866 Vivacom Bulgaria EAD
• AS56971 CGI GLOBAL LIMITED
• AS57043 HOSTKEY B.V.
• AS133847 Anpple Tech Enterprise

Adjacent networks

• AS213241 TECHIT.BE SRL
• AS59919 Brainbox S.r.l.
• AS3356 Level 3 Parent, LLC
• AS3257 GTT Communications Inc.
• AS48362 Stadtwerke Feldkirch
• AS2914 NTT America, Inc.
• AS4657 StarHub Ltd
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS58453 China Mobile International Limited
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS38001 NewMedia Express Pte Ltd
• AS5511 Orange S.A.
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS4780 Digital United Inc.
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS6461 Zayo Bandwidth
• AS17639 Converge ICT Solutions Inc.
• AS57304 JSC "RetnNet"
• AS3491 PCCW Global (HK) Ltd.
• AS4134 No.31,Jin-rong Street
• AS50300 CustodianDC Limited
• AS16509 Amazon.com, Inc.
• AS8551 Bezeq International Ltd.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)

Routing security

• RPKI: 18 valid, 1 invalid and 1 not-found announcements; 25 ROAs.
• ASPA: none published.
• IRR: 80% of announcements registered; 91 route objects.
• Listed in as-sets: AS-10099, AS-38082-AMSIX, AS-43413_NT-NIX, AS-8764-EXCLUDE-AMS-IX-RS, AS-ACT-GLOBAL, AS-ALEXHOST:AS-TRANSITS, AS-ANTALEX-V6, AS-ATRATO:AS-PEERS, AS-BEER, AS-BNIX, AS-DIGICOMMPS, AS-DOCLERWEB:AS-PEERS, AS-FRANCEIX-PAR-LIST, AS-GAIJIN, AS-GREEN-IPV6-PEERS, AS-GREEN-PEERS, AS-LIECOMTEL-PEERS, AS-LIQUID-LINXPEERS, AS-M1NET-TRANSIT, AS-MTNET, AS-MTNICS-PEERING-PANAP-V6, AS-NAO-PEERS, AS-NFSCLOUD, AS-OPENTRANSIT, AS-ORIONTELEKOM.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Equinix Internet Exchange Singapore — Singapore, Singapore
• Milan Internet Exchange — Milan, Italy
• Equinix Internet Exchange Ashburn — Ashburn, United States
• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• Seattle Internet Exchange — Seattle, United States
• SwissIX — Zurich, Switzerland
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• Roma Internet Exchange Point — Rome, Italy
• New York International Internet Exchange — New York, United States
• Vienna Internet Exchange — Vienna, Austria
• Equinix Internet Exchange Miami — Miami, United States
• ESpanix Madrid Lower LAN — Madrid, Spain
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• Berlin Commercial Internet Exchange — Berlin, Germany
• Budapest Internet Exchange — Budapest, Hungary
• Internet Neutral Exchange Association CLG - LAN1 — Dublin, Ireland
• Belgian National Internet Exchange — Brussels, Belgium
• Internet Neutral Exchange Association CLG - LAN2 — Dublin, Ireland
• Netnod Sundsvall- Gävle — Sundsvall, Sweden