Autonomous system
AS61251 HOST4BIZ-AS
Unclassified RIPE
Summary
Host4Biz
hosting business poland
HOST4BIZ-AS is operated by Host4Biz sp. z o.o.
What it's used for
- The address space carries hosting infrastructure, evidenced by the reverse DNS record
185.151.246.254.hosted-by-host4.bizand netnames such asPL-HOST4BIZ-3-20180618. - The AS announces 2816 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with only 3 observed neighbours, indicating a hosting or business network rather than a transit provider.
- Traffic from this AS consists of web hosting, server, and cloud services for customers in Poland, France, Germany, and the USA.
Notable
- All registrants for the announced prefixes are consistent with the announcer, listing
Host4Biz NOCandHost4Biz sp. z o.o.. - The address inventory is composed of four distinct IPv4 blocks and one IPv6 block, all registered to the same entity.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
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
IPv4 4 prefixes · 2.82K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 5 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS61251- Registry name
- HOST4BIZ-AS
- Registrant
- HOST4BIZ-MNT
- Abuse contact
- abuse@host4.biz
- Registered
- 2016-05-13
- Last changed
- 2026-03-06
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 5 with no ROA
- ROAs
- 0 authorising AS61251
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 8 naming AS61251
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