AS1921 — RCODEZERO-ANYCAST-SEC1-TLD RcodeZero Anycast DNS

Network type: hosting

AS1921 announces 11 IPv4 prefixes covering 2,816 addresses and 11 IPv6 prefixes.

About this network

The RCODEZERO-ANYCAST network, a managed anycast DNS service operated by ipcom GmbH, a subsidiary of nic.at (the registry for Austria's .at top-level domain).

What it's used for

• Running a global anycast DNS platform used to serve authoritative name service for .at and many other TLDs and domains.

Notable

• Infrastructure for authoritative DNS, not general web hosting or transit. The service is anycast across many worldwide nodes for resilience.

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

Announced prefixes

• 91.237.67.0/24
• 176.97.158.0/24
• 185.80.188.0/24
• 185.80.191.0/24
• 185.102.12.0/24
• 192.174.68.0/24
• 193.46.128.0/24
• 193.46.133.0/24
• 193.46.134.0/24
• 193.227.117.0/24
• 194.0.25.0/24
• 2001:678:20::/48
• 2001:67c:1bc::/48
• 2a02:850:ffe0::/48
• 2a02:850:ffe5::/48
• 2a02:850:ffe6::/48
• 2a02:850:ffff::/48
• 2a04:2b00:14cc::/48
• 2a04:2b00:14ee::/48
• 2a05:7f00:188::/48
• 2a05:7f00:191::/48
• 2a0b:8e00::/48

Upstream networks

• AS20473 The Constant Company, LLC
• AS56655 Gigahost AS
• AS13335 Cloudflare, Inc.
• AS44066 firstcolo GmbH
• AS6939 Hurricane Electric LLC
• AS5459 London Internet Exchange Ltd.
• AS42708 Glesys AB
• AS56630 Melbikomas UAB
• AS199524 G-Core Labs S.A.
• AS55803 Hostopia Australia Web Pty Ltd
• AS8849 Melbikomas UAB
• AS49544 i3D.net B.V
• AS36236 NetActuate, Inc
• AS8308 PANSTWOWY INSTYTUT BADAWCZY
• AS48185 team.blue NV
• AS30971 nic.at GmbH
• AS45049 Mohamed El Bouddunti
• AS49432 Dominic Schallert trading as schallert.com e.U.
• AS29222 Infomaniak Network SA
• AS1836 green.ch AG
• AS50300 CustodianDC Limited
• AS42473 Anexia Cloud Solutions GmbH
• AS3741 Dimension Data
• AS34549 meerfarbig GmbH & Co. KG
• AS48362 Stadtwerke Feldkirch

Downstream networks

• AS35052 ACONET
• AS11644 Nucleo de Inf. e Coord. do Ponto BR - NIC.BR
• AS12136 Nucleo de Inf. e Coord. do Ponto BR - NIC.BR

Adjacent networks

• AS20473 The Constant Company, LLC
• AS56655 Gigahost AS
• AS13335 Cloudflare, Inc.
• AS44066 firstcolo GmbH
• AS6939 Hurricane Electric LLC
• AS35052 ACONET
• AS5459 London Internet Exchange Ltd.
• AS42708 Glesys AB
• AS56630 Melbikomas UAB
• AS199524 G-Core Labs S.A.
• AS55803 Hostopia Australia Web Pty Ltd
• AS8849 Melbikomas UAB
• AS49544 i3D.net B.V
• AS36236 NetActuate, Inc
• AS8308 PANSTWOWY INSTYTUT BADAWCZY
• AS48185 team.blue NV
• AS30971 nic.at GmbH
• AS45049 Mohamed El Bouddunti
• AS49432 Dominic Schallert trading as schallert.com e.U.
• AS29222 Infomaniak Network SA
• AS1836 green.ch AG
• AS50300 CustodianDC Limited
• AS11644 Nucleo de Inf. e Coord. do Ponto BR - NIC.BR
• AS42473 Anexia Cloud Solutions GmbH
• AS3741 Dimension Data

Internet exchanges

• LINX LON1 — London, United Kingdom
• NetIX — Sofia, Bulgaria
• SwissIX — Zurich, Switzerland
• Luxembourg Internet Exchange — Luxembourg, Luxembourg
• Belgian National Internet Exchange — Brussels, Belgium
• Gigabit Portuguese Internet Exchange Point — Lisbon, Portugal
• Rheintal Internet Exchange — Eschen, Liechtenstein
• Slovenian Internet Exchange — Ljubljana, Slovenia
• Tampere Region Exchange — Tampere, Finland
• Reykjavik Internet Exchange — Reykjavik, Iceland
• Alpes Adria Internet Exchange — Klagenfurt, Austria