asn.dev

Autonomous system

AS51430 ALTUS

Unclassified RIPE

IPv4 addresses 20.48K 22 prefixes
IPv6 prefixes 14 counted as prefixes, not addresses
Countries 1 mostly NL
Exchanges 3 recorded by PCH
Upstreams 12 4 downstream
Flagged prefixes 0 none

Summary

AltusHost

Netherlands · AI-generated

hosting business europe

ALTUS is operated by AltusHost B.V.

What it's used for

  • The address space carries web hosting, VPS, and dedicated server infrastructure, evidenced by netnames like NL-ALTUS-20120113 and reverse DNS entries such as rs.as51430.net and ns271.dnspure.com.
  • With 20,480 IPv4 addresses announced across 22 prefixes and 47 observed neighbours, the ratio indicates a hosting provider with significant peering relationships rather than a pure transit or residential access network.
  • Traffic from this AS consists of web hosting endpoints, VPS instances, and dedicated servers serving European businesses, consistent with AltusHost's service portfolio.

Notable

  • Registrants for the largest prefixes consistently identify AltusHost B.V. and AltusHost ART, aligning with the AS holder.
  • The inventory includes a mix of larger blocks (e.g., 37.46.112.0/20) and numerous /24s registered to Private Customer, suggesting a combination of core infrastructure and individual customer allocations.

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

Recorded at 3 exchanges in 2 countries, largest first.

ExchangeLocationTheir address
Speed Internet ExchangeDronten, Netherlands185.1.222.4
STHIX - StockholmStockholm, Sweden192.121.80.42
Stockholm Internet ExchangeStockholm, Sweden192.121.80.42

Transit providers

12 upstream, 4 downstream and 26 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS201789NETOPS B.V.2,357
AS42708Glesys AB504
AS9002RETN Limited425
AS50673Serverius Holding B.V.350
AS174Cogent Communications, LLC218
AS6939Hurricane Electric LLC134
AS24482SG.GS18
AS34019Hivane Association18

All 12 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 22 prefixes · 20.48K addresses IPv6 14 prefixes

CountryNamePrefixes
NLNetherlands36

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51430
Registry name
ALTUS
Registrant
ALTUSHOST-MNT
Abuse contact
abuse@altushost.com
Registered
2010-08-20
Last changed
2019-05-29
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 76 valid, 0 with no ROA
ROAs
84 authorising AS51430
ASPA
no ASPA record
IRR
100% registered · 76 of 76 announcements
Route objects
98 naming AS51430

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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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