Autonomous system
AS51815 TEKNIKBYRAN
Unclassified APNIC Cable/DSL/ISP
Summary
Teknikbyran
isp cable dsl sweden
TEKNIKBYRAN is operated by Teknikbyran i Sverige AB, a regional cable and DSL provider in Sweden.
What it's used for
- The address space carries residential and business customer traffic, evidenced by the reverse DNS record
tb78-108-53-254.cust.teknikbyran.comand netnames such asSE-KUSTBANDET-20070612andSE-KUSTBANDET-20110531. - The AS announces 14,336 IPv4 addresses across 17 prefixes and 7 IPv6 prefixes, while maintaining only 7 observed routing neighbours. This high address-to-neighbour ratio indicates an access network rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs for cable and DSL services, consistent with the operator's classification as a regional ISP.
Notable
- Registrants for the majority of prefixes are listed as
Kustbandet AB, which aligns with the historical identity of the operator before the rebrand to Teknikbyran. - The address inventory includes a mix of legacy and newer blocks, with some prefixes registered to third parties such as
WEBBFABRIKEN LTDandOCTN Networks AB, suggesting leased space or post-acquisition holdings. - The AS was first seen in routing tables in 2011, indicating a relatively recent establishment in the global routing table.
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.
Transit providers
1 upstream, 6 downstream and 9 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3399 | Obenet AB | 1,217 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 17 prefixes · 14.34K addresses IPv6 7 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SE | Sweden | 24 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS51815- Registry name
- TEKNIKBYRAN
- Registrant
- KUSTBANDET-MNT
- Abuse contact
- registry@kustbandet.com
- Registered
- 2011-01-12
- Last changed
- 2026-07-08
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Teknikbyran i Sverige AB
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Outbound
- Peering policy
- Open
- IRR as-set
AS-TEKNIKBYRAN- Facilities
- 2 facilities
- Website
- http://www.teknikbyran.se
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
- 71% valid · 17 valid, 7 with no ROA
- ROAs
- 19 authorising AS51815
- ASPA
- no ASPA record
- IRR
- 100% registered · 24 of 24 announcements
- Route objects
- 25 naming AS51815
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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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