Autonomous system
AS39521 TNGNET
Unclassified RIPE
Summary
TNGNET
hosting infrastructure enterprise netherlands
TNGNET is operated by TNGNET B.V., a Dutch provider of enterprise connectivity, cloud, and colocation services.
What it's used for
- The address space carries infrastructure and enterprise traffic, with netnames like
NL-TNGNET-20120504andIPXO-LLCindicating a mix of owned and leased IP blocks. - The AS announces 20,480 IPv4 addresses across 37 prefixes and 3 IPv6 prefixes, while maintaining 110 observed neighbours; this ratio of moderate address space to high peering density indicates a transit or interconnection role rather than a large-scale residential access network.
- Traffic from this AS consists of enterprise-grade connectivity, cloud workloads, and colocation services, supporting diverse fiber connections and access to Tier-1 networks and major Internet Exchange Points.
Notable
- Registrants for the largest prefixes include
TNGNET B.V.andIPXO LLC, with some blocks registered toPrivate Customer, reflecting a combination of direct ownership and third-party IP leasing. - The address inventory is fragmented across multiple /22 and /24 blocks, including ranges from 5.22.204.0/22 to 82.22.143.0/24, which is typical for an infrastructure provider aggregating diverse IP resources.
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 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.214.41 |
| The Frys Internet Exchange | Frysian, Netherlands | 2001:7f8:10f::9a61:57 |
| ERA-IX Amsterdam | Amsterdam, Netherlands | 185.1.240.205 |
Transit providers
21 upstream, 7 downstream and 45 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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 37 prefixes · 20.74K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| NL | Netherlands | 40 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS39521- Registry name
- TNGNET
- Registrant
- TNGNET B.V.
- Abuse contact
- abuse@tngnet.com
- Registered
- 2016-06-24
- Last changed
- 2026-04-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 46 valid, 0 with no ROA
- ROAs
- 47 authorising AS39521
- ASPA
- no ASPA record
- IRR
- 100% registered · 46 of 46 announcements
- Route objects
- 64 naming AS39521
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 1,775 prefixes, as published 2026-10-11. 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