Autonomous system
AS38987 OST-ASN Spoldzielnia Telekomuniacyjna OST
Residential RIPE Cable/DSL/ISP
Summary
Spoldzielnia Telekomunikacyjna OST
residential isp cable dsl
The AS handle OST-ASN is held by Spoldzielnia Telekomunikacyjna OST.
What it's used for
- The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries for
dynamicip.ostnet.pl,staticip.ostnet.pl, andcgnat.ostnet.pl. - The network announces 12,288 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with 13 observed neighbours, indicating a regional access provider rather than a transit hub.
- Traffic consists of subscriber eyeballs for cable and DSL services, including CGNAT pools for shared public IP access.
Notable
- All registrants for the announced prefixes are
OST CORE IP NETWORK ADMINISTRATORS; Spoldzielnia Telekomunikacyjna OST, matching the AS holder. - The address inventory is subdivided into four distinct IPv4 blocks, with the largest being a /19 and the others /21 or /22, alongside a single /32 IPv6 prefix.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| TPIX - Internet Exchange | Warsaw, Poland | 195.149.232.138 |
| Equinix Internet Exchange Warsaw | Warsaw, Poland | 195.182.218.140 |
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 · 12.29K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 5 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS38987- Registry name
- OST-ASN
- Registrant
- Spoldzielnia Telekomunikacyjna OST
- Abuse contact
- abuse@ostnet.pl
- Registered
- 2005-11-23
- Last changed
- 2026-06-02
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Spoldzielnia Telekomunikacyjna OST
- Also known as
- OST
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-OST- Present at
- 4 exchanges
- Website
- http://www.ostnet.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 · 5 valid, 0 with no ROA
- ROAs
- 5 authorising AS38987
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 6 naming AS38987
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 1,772 prefixes, as published 2026-10-15. 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