Autonomous system
AS207021 RCODEZERO-ANYCAST-SEC2 ipcom GmbH
Unclassified RIPE
Summary
RcodeZero
dns anycast infrastructure business
The AS handle RCODEZERO-ANYCAST-SEC2 is held by ipcom GmbH, the operator of the RcodeZero anycast DNS service.
What it's used for
- The address space carries anycast DNS infrastructure, evidenced by netnames
ANYCAST-CLOUD_2,CentralNic-Anycast-K, andCentralNic-Anycast-J, and the reverse DNS recordb.babieldns.de. - The AS announces 1280 IPv4 addresses and 4 IPv6 prefixes with only 3 observed neighbours, a ratio indicating a specialized service network rather than a transit or access provider.
- Traffic from this AS consists of DNS query and response packets for the RcodeZero service, which provides authoritative and recursive DNS resolution.
Notable
- Registrants include ipcom GmbH, Name ISP NOC, nic.at GmbH, and CentralNic Network Operations (1api GmbH), reflecting the collaborative nature of the anycast deployment with partners like CentralNic and the Austrian registry nic.at.
- ipcom GmbH is a sister company of the Austrian domain registry nic.at, founded in 2005 with a focus on telephony, VoIP, and DNS services.
- The inventory consists of five IPv4 /24 prefixes and four IPv6 /48 prefixes, all located in Austria.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-12, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.28K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AT | Austria | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS207021- Registry name
- RCODEZERO-ANYCAST-SEC2
- Registrant
- NICAT-MNT
- Abuse contact
- reports@cert.at
- Registered
- 2016-09-19
- Last changed
- 2023-08-24
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 89% valid · 16 valid, 2 with no ROA
- ROAs
- 40 authorising AS207021
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 48 naming AS207021
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 453 networks and 1,848 prefixes, as published 2026-11-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere