Autonomous system
AS62429 CSTNET
Residential RIPE
Summary
CSTNET
isp residential regional russia
CSTNET is operated by CSTNET "C.S.T". Ltd.
What it's used for
- The address space carries residential and business internet access, evidenced by reverse DNS entries like
host-80-87-148-0.cstnet.ruand netnames such asRU-CSTNET-20050519andCSTNET. - The AS announces 7,424 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, with 12 observed routing neighbours, indicating a regional access provider rather than a transit hub.
- Traffic from this AS consists of subscriber eyeballs and local business endpoints served by a regional cable/DSL ISP in the Russian Federation.
Notable
- Registrants for most prefixes align with the announcer, listing
CSTNET NOC; "C.S.T". Ltd., while two prefixes (31.24.87.0/24and185.124.64.0/24) are registered toNavant LLC. - The address inventory is fragmented across multiple /22, /23, and /24 blocks, with a mix of
cstnet.ruandnwnet.rureverse DNS domains.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
7 upstream, 2 downstream and 11 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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 7.42K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RU | Russian Federation | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS62429- Registry name
- CSTNET
- Registrant
- CSTNET-MNT
- Abuse contact
- abuse@cstnet.ru
- Registered
- 2013-09-24
- Last changed
- 2025-05-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 8 authorising AS62429
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 8 naming AS62429
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: 443 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