Autonomous system
AS31726 TELEFIBER
Residential RIPE
Summary
Telefiber AS
residential fiber isp norway
TELEFIBER is the autonomous system for Telefiber AS, a regional broadband provider in Telemark, Norway.
What it's used for
- The address space carries residential and business broadband customers, evidenced by reverse DNS entries such as
bb.cust.telefiber.noandbb.cust.hknett.no. - The AS announces 31,744 IPv4 addresses across 15 prefixes and 3 IPv6 prefixes, while maintaining 15 observed neighbours, a ratio indicative of an access network rather than a transit provider.
Notable
- Registrants include Telefiber AS, Snogg Fiber AS, NC-Spectrum AS, Numedal Fiber AS, Notodden Kommune, and Bykle Breiband AS, reflecting a mix of owned and acquired or leased infrastructure.
- The address inventory is finely subdivided into multiple /22 and /21 blocks, consistent with site-by-site segmentation for a regional fiber operator.
- The presence of
hknett.noin reverse DNS andSnogg Fiber ASas a registrant suggests historical consolidation of local fiber networks under the Telefiber brand.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Norwegian Internet Exchange Oslo 1 | Oslo, Norway | 185.1.55.87 |
| Free Internet eXchange Oslo | Oslo, Norway | 91.198.176.44 |
Transit providers
9 upstream, 1 downstream and 17 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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 15 prefixes · 31.74K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| NO | Norway | 18 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS31726- Registry name
- TELEFIBER
- Registrant
- MNT-TELEFIBERAS
- Abuse contact
- postmottak@telefiber.no
- Registered
- 2008-11-24
- Last changed
- 2025-02-18
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 90% valid · 18 valid, 2 with no ROA
- ROAs
- 18 authorising AS31726
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 15 naming AS31726
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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