Autonomous system
AS15415 OBIS Oberberg-Online Informationssysteme GmbH
Unclassified RIPE
Summary
Oberberg-Online Informationssysteme
isp telecom hosting infrastructure
The reverse zone labels which addresses are network and broadcast, publishing the internal subnetting.
What it's used for
- A regional internet provider. Eleven IPv4 prefixes and two IPv6 prefixes announced from Germany, six thousand addresses, through two observed BGP neighbours.
Notable
- Every sampled address answered, which is rare, and they use at least seven different naming forms.
- Addresses ending in zero are prefixed with a word for network; addresses ending in two hundred and fifty-five are prefixed with an abbreviation for broadcast, in two spellings.
- Two of those network-labelled addresses end in one hundred and twenty-eight rather than zero, which means the space is subnetted in halves and the names say so.
- Other forms add words for temporary in two spellings, or drop the prefix entirely, or pad the octets with zeroes, and three different domains appear across one network.
- One block is registered to an individual and one carries a netname with a date from the early nineties.
Interesting
- Marking network and broadcast addresses is an old and careful habit that makes a traceroute readable. It also hands out the subnet boundaries, so anyone can map how the space is divided without probing.
- Seven conventions in one zone is a network that has been run continuously for a very long time by people who each added their own.
- Full reverse coverage is the mark of an operator that considers unnamed addresses a defect.
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 2026-11-07, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 11 prefixes · 6.66K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 13 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15415- Registry name
- OBIS
- Registrant
- OBIS-MNT
- Abuse contact
- abuse@oberberg.net
- Registered
- 2002-06-28
- Last changed
- 2019-09-30
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 13 with no ROA
- ROAs
- 2 authorising AS15415
- ASPA
- no ASPA record
- IRR
- 100% registered · 13 of 13 announcements
- Route objects
- 14 naming AS15415
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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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