asn.dev

Autonomous system

AS8273 DK-STOFANET-AS Norlys Telco A/S

Residential RIPE

IPv4 addresses 21.50K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly DK
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Norlys Digital (formerly Stofa)

Denmark · AI-generated

isp residential legacy

DK-STOFANET-AS is held today by Norlys Digital A/S. Stofa was Denmark's long-running cable-television and broadband operator; it ended up inside the Norlys energy-and-telecoms group, and the AS handle preserves the older name.

What it's used for

  • Residential broadband. Nearly every sampled address across 91.144.192.0/18, 31.193.232.0/21 and 185.10.212.0/22 resolves to the Norlys subscriber template: 91-144-200-20.norlyscustomer.net, 185-10-214-99.norlyscustomer.net and so on. The norlyscustomer label is unambiguous.

Notable

  • Eyeball space. Traffic from this AS is Danish home internet users. The dotted-quad-in-hostname naming is the standard cable-modem pattern and the addresses rotate among subscribers, so per-address attribution is unstable even though the country is reliable.
  • The handle is a fossil worth knowing about: searching for "Stofanet" leads to a brand that no longer sells service, while the rDNS names the current owner. Norlys holds several Danish ASNs inherited from the operators it absorbed.
  • It also announces 128.0.8.0/21, part of the low-numbered space RIPE began issuing much later than the AS number itself was allocated.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS39642Sinal A/S236

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 21.50K addresses IPv6 0 prefixes

CountryNamePrefixes
DKDenmark4

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS8273
Registry name
DK-STOFANET-AS
Registrant
Norlys Telco A/S
Abuse contact
abuse@norlys.dk
Registered
2006-11-15
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
4 authorising AS8273
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS8273

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: 447 networks and 1,843 prefixes, as published 2026-11-02. 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

Cross-check