AS39063 — LEITWERT

AS39063 announces 2 IPv4 prefixes covering 512 addresses and 10 IPv6 prefixes.

About this network

The AS handle LEITWERT is held by Leitwert GmbH.

What it's used for

• The address space carries infrastructure for network measurement and research, as indicated by registrants including "Leitwert Research" and "Leitwert Tech" under the netname DE-LEITWERT-20191122.
• The AS announces 512 IPv4 addresses across 2 prefixes and 10 IPv6 prefixes, while maintaining 216 observed neighbours. This ratio of limited address space against a high neighbour count indicates a transit or peering-heavy role rather than an access network.
• Traffic from this AS consists of web and API endpoints supporting large-scale global routing system monitoring and internet intelligence services.

Notable

• Registrants for both announced IPv4 prefixes are consistent with the announcer, listing "Leitwert Admin", "Leitwert Tech", "Leitwert GmbH", and "Leitwert Research".
• The address inventory is finely subdivided, with 10 distinct IPv6 /48 prefixes and a single /30, reflecting internal segmentation for a research and measurement infrastructure.

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

Announced prefixes

• 194.145.116.0/24
• 194.145.125.0/24
• 2a06:2900:1116::/48
• 2a06:2900:1125::/48
• 2a06:2900:1130::/48
• 2a06:2900:1140::/48
• 2a06:2900:1145::/48
• 2a06:2900:1150::/48
• 2a06:2900:1155::/48
• 2a06:2900:1195::/48
• 2a06:2900:1199::/48
• 2a06:2904::/30

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS3303 Swisscom (Schweiz) AG
• AS29632 Netassist International EOOD
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS34549 meerfarbig GmbH & Co. KG
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50628 Leonix Telecom SAS
• AS212024 Marc Schmitt
• AS204092 Association GRIFON
• AS50673 Serverius Holding B.V.
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS48185 team.blue NV
• AS24482 SG.GS
• AS50300 CustodianDC Limited
• AS56662 Marcin Gondek
• AS213241 TECHIT.BE SRL
• AS2914 NTT America, Inc.
• AS3356 Level 3 Parent, LLC
• AS3257 GTT Communications Inc.
• AS174 Cogent Communications, LLC
• AS17639 Converge ICT Solutions Inc.
• AS50304 Blix Solutions AS
• AS37721 Virtual Technologies & Solutions

Downstream networks

• AS29108 Leitwert GmbH

Adjacent networks

• AS29108 Leitwert GmbH
• AS6939 Hurricane Electric LLC
• AS12389 PJSC Rostelecom
• AS1299 Arelion Sweden AB
• AS3303 Swisscom (Schweiz) AG
• AS3320 Deutsche Telekom AG
• AS23764 CTGNet
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS3257 GTT Communications Inc.
• AS174 Cogent Communications, LLC
• AS3491 PCCW Global (HK) Ltd.
• AS58453 China Mobile International Limited
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS29632 Netassist International EOOD
• AS48362 Stadtwerke Feldkirch
• AS50673 Serverius Holding B.V.
• AS48185 team.blue NV
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS1836 green.ch AG
• AS50300 CustodianDC Limited
• AS212024 Marc Schmitt
• AS213241 TECHIT.BE SRL

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• MSK-IX Moscow — Moscow, Russia
• SwissIX — Zurich, Switzerland
• DE-CIX Marseille — Marseille, France