asn.dev

Autonomous system

AS57998 ANFA-

Unclassified APNIC

IPv4 addresses 1.54K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

ANFA FAJER Sp.J.

Poland · AI-generated

business poland small

The AS handle ANFA- is held by ANFA FAJER Sp.J.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netname ANFA-PL and reverse DNS entries pointing to anfa.net.pl.
  • The AS announces 1536 IPv4 addresses across 2 prefixes with only 1 observed neighbour, a ratio that implies a small, self-contained business network rather than a transit or large access provider.
  • Traffic from this AS consists of internal corporate endpoints for the Anfa Fajer company, a Polish general partnership (Spółka Jawna) based in Skoczów.

Notable

  • The registrants for both announced prefixes, 91.237.156.0/22 and 91.237.154.0/23, are listed as ANFA FAJER Sp.J., matching the AS holder.
  • The address inventory is compact, consisting of two contiguous IPv4 blocks with no IPv6 prefixes in the inventory.

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
AS56449INTERA SP.zoo130

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 2 prefixes · 1.54K addresses IPv6 0 prefixes

CountryNamePrefixes
PLPoland2

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS57998
Registry name
ANFA-PL
Registrant
ANFA FAJER Sp.J.
Abuse contact
ip-ripe@atriw.com
Registered
2012-03-28
Last changed
2020-03-10
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
8 authorising AS57998
ASPA
2 declared providers
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS57998

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 1,784 prefixes, as published 2026-10-19. 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