Autonomous system
AS207727 A5N
Unclassified RIPE
Summary
a5n
business denmark small
A5N is operated by Asbjorn Sloth Tonnesen trading as a5n.
What it's used for
- The address space is registered under the netname
DK-A5N-20191122with registrants identified as "a5n.dk network operators". - The AS announces 768 IPv4 addresses across 3 prefixes and 5 IPv6 prefixes, with only 2 observed routing neighbours.
- The low neighbour count relative to the address inventory indicates a small, self-contained network rather than a transit provider.
Notable
- All three IPv4 prefixes share the same netname and registrant, confirming a single, consistent ownership structure.
- The inventory consists of three /24 blocks in the 194.165.0.0/16 range and five IPv6 prefixes under 2a10:2a80::/48.
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 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 768 addresses IPv6 5 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DK | Denmark | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS207727- Registry name
- A5N
- Registrant
- AFN1-MNT
- Abuse contact
- abuse@a5n.dk
- Registered
- 2019-12-06
- Last changed
- 2024-12-05
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- a5n
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
RIPE::AS-A5N- Facilities
- 2 facilities
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 5 authorising AS207727
- ASPA
- 2 declared providers
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 11 naming AS207727
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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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