Autonomous system
AS39889 DT-AS
Hosting RIPE Network Services
Summary
DCS Networks
transit regional nordic
DT-AS is operated by DCS Networks.
What it's used for
- The address space carries a mix of corporate and service-oriented netnames, including
FIBERONE-SE(FiberOne AB),ORG-AIA67-RIPE(Knoppus IT AB),SE-DCSNet-Services-NETWORK(SITAB Infrastruktur), andSE-FPS-NET(Fri programvaru-syndikatet Gbg). - With 3072 IPv4 addresses announced across 4 prefixes and 37 observed neighbours, the high neighbour-to-address ratio indicates a transit or network services role rather than a large-scale access network.
- As a regional network services provider, the traffic consists of inter-AS transit, peering, and connectivity for the various business entities holding the registered prefixes.
Notable
- Registrants vary across the announced prefixes, listing FiberOne AB, Knoppus IT AB, SITAB Infrastruktur, and Fri programvaru-syndikatet Gbg, while the AS holder is Fredrik Holmqvist.
- The inventory includes a single IPv6 prefix, 2a00:1c20::/32, alongside the IPv4 blocks.
- The reverse DNS sample for the SITAB Infrastruktur block points to
ip.dcs.net, aligning with the operator's domain.
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
Recorded at 7 exchanges in 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.213.76 |
| Sweden Open Network Internet eXchange Stockholm | Stockholm, Sweden | 185.1.215.43 |
| STHIX - Stockholm | Stockholm, Sweden | 192.121.80.24 |
| Stockholm Internet Exchange | Stockholm, Sweden | 192.121.80.24 |
| Netnod Stockholm | Stockholm, Sweden | 195.69.119.145 |
| Free Internet eXchange Oslo | Oslo, Norway | 91.198.176.89 |
| Netnod Sundsvall- Gävle | Sundsvall, Sweden | 194.68.128.145 |
Transit providers
19 upstream, 7 downstream and 50 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 2.82K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SE | Sweden | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS39889- Registry name
- DCS-Networks-AS
- Registrant
- MNT-SITAB
- Abuse contact
- abuse@dcs.net
- Registered
- 2006-05-10
- Last changed
- 2026-09-23
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- DCS Networks - Nordic
- Also known as
- DCS
- Network type
- Network Services
- Scope
- Regional
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS-I2B- Present at
- 9 exchanges
- Facilities
- 3 facilities
- Website
- https://dcs.net
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
- 40% valid · 2 valid, 3 with no ROA
- ROAs
- 2 authorising AS39889
- ASPA
- 3 declared providers
- IRR
- 20% registered · 1 of 5 announcements 4 other origin
- Route objects
- 3 naming AS39889
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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