asn.dev

Autonomous system

AS58350 CLASSCOM-AS

Unclassified RIPE

IPv4 addresses 12.80K 3 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 0 recorded by PCH
Upstreams 3 1 downstream
Flagged prefixes 0 none

Summary

Classcom

Poland · AI-generated

residential isp fiber dsl

CLASSCOM-AS is operated by PHU Classcom Sp. z o.o.

What it's used for

  • The address space carries residential broadband traffic, evidenced by reverse DNS entries such as 0.8.ftth.classcom.pl and 254.23.ftth.classcom.pl indicating fiber-to-the-home infrastructure, alongside c255.15.comtelnet.pl and 254.59.jarosz.pl suggesting DSL or legacy access services.
  • The AS announces 12,800 IPv4 addresses across 3 prefixes and 2 IPv6 prefixes, while maintaining only 6 observed routing neighbours. This high address-to-neighbour ratio is characteristic of an access or eyeball network rather than a transit provider.
  • As a regional ISP in Kraków, the traffic consists primarily of subscriber internet access, including fiber and DSL connections for residential and small business customers in the Lesser Poland Voivodeship.

Notable

  • Registrants for the largest prefixes align with the announcer, with 176.115.0.0/19 and 195.150.76.0/23 registered to Classcom contacts, while 195.150.48.0/20 is registered to Academic Computer Centre CYFRONET AGH under the netname PL-CYFRONET-960829.
  • The inventory includes a mix of Classcom-owned space and a block historically associated with CYFRONET, indicating either leased capacity or acquired address space.

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

3 upstream, 1 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8323Academic Computer Centre CYFRONET AGH89
AS24482SG.GS5
AS20473The Constant Company, LLC2

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 3 prefixes · 12.80K addresses IPv6 2 prefixes

CountryNamePrefixes
PLPoland5

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS58350
Registry name
CLASSCOM-AS
Registrant
AS8323-MNT
Abuse contact
abuse@classcom.pl
Registered
2012-07-03
Last changed
2023-06-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 5 valid, 0 with no ROA
ROAs
5 authorising AS58350
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
5 naming AS58350

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