Autonomous system
AS20539 TCRS-AS Sumy, Ukraine
Hosting RIPE
Summary
Technical Centre Radio Systems
isp residential ukraine telecom
TCRS-AS is operated by Technical Centre Radio Systems Ltd., a telecommunications provider based in Sumy, Ukraine.
What it's used for
- The address space carries residential and dynamic user traffic, evidenced by reverse DNS entries pointing to
dynamic-pool.rs.net.uaand netnames likeTCRS-NET. - The AS announces 12,800 IPv4 addresses across 8 prefixes and maintains 15 observed neighbours, a ratio consistent with an access network serving end-users rather than a transit provider.
Notable
- Registrants for the majority of prefixes align with the announcer, listing "Technical Centre Radio Systems Ltd." and "TC Radio Systems Coordination Center," though one prefix (
94.199.160.0/21) is registered to "MIK Telecom Ltd." - The inventory consists of a mix of /20, /21, /22, and /23 blocks, primarily within the 31.135.0.0/16 range, alongside smaller allocations in 94.199.0.0/16 and other ranges.
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 |
|---|---|---|
| Giganet Internet Exchange | Kyiv, Ukraine | 185.1.63.23 |
Transit providers
5 upstream, 1 downstream and 9 adjacent networks observed; most-used upstreams first.
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 8 prefixes · 12.80K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| UA | Ukraine | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS20539- Registry name
- TCRS-AS
- Registrant
- Technical Centre Radio Systems Ltd.
- Abuse contact
- abuse@rs.net.ua
- Registered
- 2002-04-09
- Last changed
- 2024-06-19
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 22 valid, 0 with no ROA
- ROAs
- 23 authorising AS20539
- ASPA
- no ASPA record
- IRR
- 100% registered · 22 of 22 announcements
- Route objects
- 28 naming AS20539
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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