AS203329 — ESHELTER NTT Global Data Centers EMEA GmbH

AS203329 announces 10 IPv4 prefixes covering 81,664 addresses and 3 IPv6 prefixes.

About this network

ESHELTER is operated by NTT Global Data Centers EMEA GmbH.

What it's used for

• The address space carries data center infrastructure, evidenced by netnames such as DE-E-SHELTER-19930505 and NTTDATA, and reverse DNS entries like mailm2.ccc-concat.de.
• The AS announces 81,664 IPv4 addresses across 17 prefixes and 8 IPv6 prefixes, while maintaining 118 observed neighbours. This high neighbour count relative to the address inventory indicates a transit or peering-heavy role typical of a large data center operator connecting to multiple upstreams and peers.
• Traffic from this AS consists of enterprise and cloud workloads hosted in NTT's high-availability data centers, including web services, API endpoints, and corporate IT infrastructure for clients in the EMEA region.

Notable

• Registrants largely align with the announcer, with NTT Global Data Centers EMEA GmbH listed for the majority of prefixes, though some blocks show historical or third-party registrants like RWE Renewables Europe & Australia GmbH and Toshiba Europe GmbH.
• The operator was formerly known as e-shelter, a name that persists in the AS handle and several netnames, reflecting its rebranding under the NTT DATA group.
• The inventory includes a mix of large /16 and /20 blocks alongside smaller /22 and /24 allocations, with some prefixes registered to unrelated entities, suggesting a history of address space consolidation or leasing.

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

Announced prefixes

• 16.41.252.0/24
• 46.252.80.0/20
• 141.77.0.0/16
• 149.233.0.0/19
• 185.33.149.0/24
• 185.138.140.0/22
• 185.152.236.0/22
• 193.193.166.0/23
• 194.99.84.0/24
• 195.182.196.0/23
• 2001:67c:7e4::/48
• 2a00:b404:e000::/36
• 2a07:e80::/29

Upstream networks

• AS2914 NTT America, Inc.
• AS5405 Inter.link GmbH
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS3320 Deutsche Telekom AG
• AS8220 COLT Technology Services Group Limited
• AS34549 meerfarbig GmbH & Co. KG
• AS33891 Core-Backbone GmbH
• AS24482 SG.GS
• AS6797 GlobalConnect AB
• AS37721 Virtual Technologies & Solutions
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS37100 SEACOM Limited
• AS20485 Joint Stock Company TransTeleCom
• AS8551 Bezeq International Ltd.
• AS13237 euNetworks GmbH
• AS48362 Stadtwerke Feldkirch
• AS9002 RETN Limited
• AS8218 Zayo Infrastructure France SA
• AS213241 TECHIT.BE SRL
• AS29632 Netassist International EOOD
• AS17639 Converge ICT Solutions Inc.
• AS12859 BIT BV
• AS1836 green.ch AG

Downstream networks

• AS62075 Julian Lannert
• AS50246 360 Treasury Systems AG
• AS208025 RSG Group GmbH
• AS47219 NTT Global Data Centers EMEA UK Ltd.
• AS213314 WallCloud GmbH
• AS715 WoodyNet, Inc.
• AS209419 Julian Lannert
• AS29205 VERCOM S.A.

Adjacent networks

• AS5405 Inter.link GmbH
• AS2914 NTT America, Inc.
• AS1299 Arelion Sweden AB
• AS62075 Julian Lannert
• AS6939 Hurricane Electric LLC
• AS3320 Deutsche Telekom AG
• AS50246 360 Treasury Systems AG
• AS34549 meerfarbig GmbH & Co. KG
• AS8220 COLT Technology Services Group Limited
• AS208025 RSG Group GmbH
• AS47219 NTT Global Data Centers EMEA UK Ltd.
• AS213314 WallCloud GmbH
• AS715 WoodyNet, Inc.
• AS212024 Marc Schmitt
• AS24482 SG.GS
• AS34019 Hivane Association
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS209419 Julian Lannert
• AS17639 Converge ICT Solutions Inc.
• AS6797 GlobalConnect AB
• AS8551 Bezeq International Ltd.
• AS213241 TECHIT.BE SRL
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited

Routing security

• RPKI: 12 valid, 0 invalid and 8 not-found announcements; 8 ROAs.
• ASPA: none published.
• IRR: 95% of announcements registered; 28 route objects.
• Listed in as-sets: AS-ESH, AS-EUNDE, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS8220:AS-COLTDE.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Berlin Commercial Internet Exchange — Berlin, Germany