AS9002 — RETN-AS

AS9002 announces 23 IPv4 prefixes covering 24,064 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

• 23.56.98.0/24
• 45.39.107.0/24
• 45.39.108.0/24
• 81.19.134.0/24
• 87.245.208.0/21
• 87.245.224.0/19
• 89.19.36.0/22
• 94.158.240.0/22
• 104.121.64.0/22
• 104.121.68.0/23
• 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.
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS3257 GTT Communications Inc.
• AS213241 TECHIT.BE SRL
• AS15935 ha-vel internet s.r.o.
• AS48362 Stadtwerke Feldkirch
• AS38001 NewMedia Express Pte Ltd
• AS50673 Serverius Holding B.V.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS1836 green.ch AG
• AS3320 Deutsche Telekom AG
• AS29075 IELO-LIAZO SERVICES SAS
• AS59919 Brainbox S.r.l.
• AS4637 Telstra Global
• AS3303 Swisscom (Schweiz) AG
• AS12552 GlobalConnect AB
• AS57866 Fusix Networks B.V.
• AS1273 IDDQD-AS
• AS37100 SEACOM Limited
• AS20485 Joint Stock Company TransTeleCom

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
• AS7155 ViaSat,Inc.
• AS216071 SERVERS TECH FZCO
• AS12735 TurkNet Iletisim Hizmetleri A.S.
• AS13188 CONTENT DELIVERY NETWORK LTD
• AS9498 BHARTI Airtel Ltd.
• AS41798 JSC Transtelecom
• AS49505 JSC Selectel
• AS54113 Fastly, Inc.
• AS8866 Vivacom Bulgaria EAD
• AS50340 JSC Selectel
• AS3257 GTT Communications Inc.
• AS2856 British Telecommunications Limited
• AS9198 JSC Kazakhtelecom
• AS201178 Euronet Telekomunikasyon A.S.
• AS48282 Hosting technology LTD
• AS133847 Anpple Tech Enterprise
• AS64445 NetJoin srl

Adjacent networks

• AS213241 TECHIT.BE SRL
• AS59919 Brainbox S.r.l.
• AS3356 Level 3 Parent, LLC
• AS3257 GTT Communications Inc.
• AS48362 Stadtwerke Feldkirch
• AS58453 China Mobile International Limited
• AS2914 NTT America, Inc.
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS29632 Netassist International EOOD
• AS15935 ha-vel internet s.r.o.
• AS38001 NewMedia Express Pte Ltd
• AS6939 Hurricane Electric LLC
• AS5511 Orange S.A.
• AS17639 Converge ICT Solutions Inc.
• AS1299 Arelion Sweden AB
• AS4780 Digital United Inc.
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS6461 Zayo Bandwidth
• AS3491 PCCW Global (HK) Ltd.
• AS4637 Telstra Global
• AS4134 No.31,Jin-rong Street
• AS50300 CustodianDC Limited
• AS37100 SEACOM Limited
• AS16509 Amazon.com, Inc.

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
• Berlin Commercial Internet Exchange — Berlin, Germany
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• 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