asn.dev

Autonomous system

AS44229 DTST_AS_01 nfon AG

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 18 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

nfon AG

Germany · AI-generated

voip business telecom

DTST_AS_01 is operated by nfon AG.

What it's used for

  • The IPv4 space is registered under the netname DE-NFON-20071205 with registrant nfon AG; NFON Abuse Handling.
  • The AS announces 1024 IPv4 addresses and 18 IPv6 prefixes, with only 1 observed neighbour, indicating a direct peering or transit relationship rather than a large-scale transit provider.
  • nfon AG is a VoIP service provider, so traffic from this AS consists primarily of voice over IP media and signalling for business customers.

Notable

  • The RDAP registrant nfon AG matches the AS holder, confirming consistent ownership.
  • The address inventory consists of a single IPv4 /22 block and a set of IPv6 prefixes under the 2a00:a780::/46 range, which is finely subdivided.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8878nfon AG94

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, 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 1 prefixes · 1.02K addresses IPv6 18 prefixes

CountryNamePrefixes
DEGermany19

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS44229
Registry name
DTST_AS_01
Registrant
NFON-MNT
Abuse contact
abuse@nfon.com
Registered
2007-12-06
Last changed
2024-07-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS44229
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
14 naming AS44229

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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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