asn.dev

Autonomous system

AS21478 PLEX Plex ASN

Unclassified RIPE Cable/DSL/ISP

IPv4 addresses 8.19K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly NL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Plex BV

Netherlands · AI-generated

cable dsl isp netherlands

PLEX Plex ASN is operated by Plex BV, a Dutch cable and DSL internet service provider.

What it's used for

  • The address space carries residential and business connectivity, evidenced by the netname NL-PLEX-20000501 and the registrant Plex BV.
  • The AS announces 8192 IPv4 addresses within a single prefix (213.129.192.0/19) and maintains 2 observed neighbours, a ratio consistent with an access network rather than a transit provider.

Notable

  • The registrant Plex BV matches the AS holder, confirming direct ownership of the announced space.
  • The address inventory consists of a single contiguous /19 block, indicating a consolidated internal estate for the operator's infrastructure.

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
AS213753InterEdge B.V.64

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

Shape and geography

IPv4 1 prefixes · 8.19K addresses IPv6 0 prefixes

CountryNamePrefixes
NLNetherlands1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS21478
Registry name
PLEX
Registrant
Plex BV
Abuse contact
abuse@plex.nl
Registered
2002-04-03
Last changed
2018-09-04
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Plex BV
Network type
Cable/DSL/ISP
Scope
Regional
Traffic ratio
Mostly Inbound
Peering policy
Open
Website
http://www.plex.nl

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

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
2 authorising AS21478
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS21478

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: 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

Cross-check