Autonomous system
AS50331 CITYNET
Residential RIPE Cable/DSL/ISP
Summary
City-Net
isp residential cable dsl
The AS handle CITYNET is held by City-Net Sp. z o.o.
What it's used for
- The address space carries residential and business broadband traffic, evidenced by reverse DNS entries pointing to
revdns.city-net.pland the netnameCITYNET-NET. - The AS announces 2048 IPv4 addresses across 3 prefixes and maintains 10 observed neighbours, a ratio consistent with a regional access provider rather than a transit carrier.
- As a cable and DSL ISP operating in Poland, the traffic consists primarily of subscriber eyeballs and local internet access services.
Notable
- All registrants for the announced prefixes are listed as
CITYNET Sp. z o.o., matching the AS holder. - The address inventory is compact, consisting of three contiguous IPv4 blocks within the 178.217.192.0/22 range.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| TPIX - Internet Exchange | Warsaw, Poland | 195.149.232.52 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50331- Registry name
- CITYNET
- Registrant
- MNT-INSITE-SPZOO
- Abuse contact
- isp@insite.pl
- Registered
- 2009-12-21
- Last changed
- 2018-09-04
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- CITYNET Sp.z o.o.
- Also known as
- City-Net
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- Present at
- 2 exchanges
- Website
- https://www.city-net.pl
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 9 authorising AS50331
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 10 naming AS50331
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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 1,781 prefixes, as published 2026-10-16. 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